Saturday, December 26, 2015

How cats conquered the earth

Thanks to a unique feline blueprint they're the planet's most successful survivors, reveals a new documentary 

  • Biologist Patrick Aryee gets up close to lions and tigers  
  • The two-part show also charts their 11-million-year history 
  • Big Cats: An Amazing Animal Family starts on Monday, 8pm, Sky1 
They’re the superheroes of the animal kingdom, the most powerful predators on the planet whose extraordinary skills have given them valuable advantages over other animals. 

Humans aside, they’re the most successful survivors on Earth, having adapted to almost every conceivable environment from the harsh Siberian wilds to Africa’s scorched savannah.

They are, of course, cats. And while big cats have long been a wildlife TV subject, you’ll never have seen a show quite like biologist Patrick Aryee’s before. Yes, he gets up close and personal with lions and tigers and talks about their hunting prowess. 

Cheetah's in Kenya's Masai Mara Nature Reserve 
Cheetah's in Kenya's Masai Mara Nature Reserve 


But his stunningly filmed two-part show Big Cats: An Amazing Animal Family also charts their 11 million-year history and explores how the ‘blueprint’ common to them all has made them such survivors.

‘From tooth to tail, cats are formidable predators with sensory superpowers,’ says Londoner Patrick, who was inspired to become a scientist after watching David Attenborough talking about big cats on TV. 

‘There are 37 different species but there are certain traits that link them all. They have excellent vision: in low light it is six times better than a human’s. They have whiskers that can detect tiny movements in the air, letting them home in on their prey. 

'They’re nimble; their spines are so flexible they can twist 180°. But what sets them apart are their weapons; dogs’ claws can become blunt but cats’ are always razor sharp as they retract them when they don’t need them. And they have a precise way of killing with a deadly bite to the back of the neck.’
A clouded leopard, the first cat
A clouded leopard, the first cat

The story starts in the rainforests of south-east Asia 11 million years ago. Scientists believe the clouded leopard was the first cat – and it still exists today. ‘It’s an ancient predator, almost as much monkey as cat,’ says Patrick, who sees them in Thailand. 
‘But it has those same attributes that made cats so powerful.’ From here cats moved to the frozen wastes of Russia where today’s huge Siberian tiger – twice as heavy as tigers in the tropics – can survive in -40°C. ‘Bigger bodies are better at retaining heat while their thick winter coat and added layer of fat has adapted for life in the snow,’ says Patrick.

Eight million years ago as land bridges opened up they moved from Asia to Africa, where the majestic lion emerged. ‘They introduced the idea of a pride, when cats had been solitary creatures,’ says Patrick. He meets Kevin Richardson, a South African who’s part of a pride – he hunts with them and even cleans their teeth. 

Kevin puts Patrick in a safety cage on the savannah to let him join the pride too. ‘I felt like dinner. The dominant male came so close I could smell his breath. I was shaking and it was terrifying,’ says Patrick.

During the Ice Age cats travelled from Asia to America. Patrick meets the Canada lynx, which has the thickest fur of any cat and huge paws that act like snow shoes. As the lynx moved on it adapted to each landscape. In tropical Belize in Central America it became the margay, a treetop hunter that leaps up to 13ft between branches. 

The puma, also called the cougar or mountain lion, emerged and spread across California before crossing back into Africa where it evolved into the cheetah, Earth’s fastest mammal. ‘So the cat renowned for its lightning speed is an American immigrant,’ laughs Patrick. The cheetah’s one disadvantage is that it’s small, making it vulnerable to lions and leopards which target its cubs and steal its prey.

Cats began to co-habit with humans 10,000 years ago when man started living in settlements. It was a mutually beneficial relationship; cats kept rodents away and in return they got warmth, security and a place to nurture kittens. 

‘Humans have been disastrous for almost every other animal except cats,’ says Patrick. ‘There are about 600 million domestic cats in the world. That’s why I’d say, of all the great feline species, the domestic cat is the majestic culmination of the cat story. It’s the ultimate cat.’

Big Cats: An Amazing Animal Family starts on Monday, 8pm, Sky1.



Friday, December 25, 2015

Secrets of the World’s 38 Species of Wild Cats

Posted by David Maxwell Braun of National Geographic in Cat Watch

Perhaps the most popular pet on Earth, the family cat is a beloved member of countless households. Millions of others abandoned or strayed are flourishing independently outdoors, where they may pose serious threats to birds and other small animals. But as familiar as the house cat is, not many people know it has 38 truly wild relatives, distinct species that include not only the iconic “King of the Jungle,” the lion, and  the world’s largest predator, the tiger, but also obscure felids like the flat-headed cat, fishing cat, and oncilla. Wild cats mostly live in exotic places most of us will never visit, but several species survive, often covertly, within or around villages and cities in many parts of the world (Famous Cougar That Was Holed Up Under L.A House Returns to the Wild).
"Wild Cats of the World, by Luke Hunter. Published by Bloomsbury Natural History, 2015. Click the cover for more information.
“Wild Cats of the World,” by Luke Hunter; illustrations by Priscilla Barrett. Published by Bloomsbury Natural History, 2015. Click the cover for more information.
Cat enthusiasts — and anyone who appreciates wildlife and the wonders of evolution — will be enchanted by a comprehensive new book that shares the secrets of the felids. Written by President and Chief Conservation Officer of Panthera, Luke Hunter, Wild Cats of the World profiles all 38 known species, illustrated with 400 photographs of the astonishing variety and beauty of this ancient and widespread family of carnivores.

Hunter, a committee member of the National Geographic Big Cats Initiative, published the book to illuminate and teach everyone of all ages about the diversity of the cats and explain the importance of their conservation, and how saving them can be beneficial to us.
Felids live in virtually any habitat, from desert to the subarctic, Hunter said in an email interview with Cat Watch. They have been around for about 30 million years and have out-lived many other branches in carnivore evolution which died out in their wake.

So what makes cats such successful species?

“The cat is the ultimate solo hunter.”

LH: Their success is due, in part, to their extremely efficient body design. The cat is the ultimate solo hunter, with acute senses, hair-trigger reflexes, explosive muscular strength and a supple skeleton. Protractile claws and elastic wrists give tremendous control for grasping and handling large prey, while truncated, powerful jaws deliver a precise killing bite. Social carnivores like canids and hyaenas have more robust, less flexible bodies built for stamina to tire prey over long distances but which lack the cat’s solitary killing prowess. All of which means, for example, that a lone puma is able to take down an adult elk but it takes a few wolves to do likewise.”
Cheetahs are poorly built for arboreality but they easily scale large sloping trunks, sometimes as high as five to six metres. Cheetahs value trees as communal signposts for scent-marking, and for scanning the horizon for prey. ©Nick Garbutt, courtesy of Bloomsbury Publishing.
Cheetahs are poorly built for arboreality but they easily scale large sloping trunks, sometimes as high as five to six metres. Cheetahs value trees as communal signposts for scent-marking, and for scanning the horizon for prey. © Nick Garbutt, courtesy of Bloomsbury Publishing.
Yet the future of wild cats is in doubt almost everywhere. What are some of the greatest threats and where might cats have the best chance of survival?

LH: Sadly, all the reasons that cats are declining arise from people, especially the conversion of wild habitats into farmland, pasture and cities, and the loss of their prey species. Aside from these ‘indirect threats’, cats are specifically targeted by people for a variety of reasons. Many species are killed by herders and farmers around the world, fearing for their livestock; the recent poisoning of lions in Kenya’s famous Maasai Mara Reserve by Masai herders is, unfortunately repeated every day somewhere in the world.

“All the reasons that cats are declining arise from people.”

Finally, cats are illegally killed–poached–for their fur and body parts. The demand driven by traditional Asian medicinal beliefs for tiger body parts (which have as much medicinal value as consuming a cow) is now so intense that tigers are hunted inside protected reserves across their range. Increasingly, other large cat species–lions, leopards and even jaguars–are being killed for the same trade.
North America’s most widespread felid, the bobcat can be richly spotted with large blotches as in this female and her four-month old kittens in California. Contrary to popular myth, this is not the result of hybridisation with the ocelot. © Barry Rowan, courtesy of Bloomsbury Publishing.
North America’s most widespread felid, the bobcat can be richly spotted with large blotches as in this female and her four-month old kittens in California. Contrary to popular myth, this is not the result of hybridisation with the ocelot. © Barry Rowan, courtesy of Bloomsbury Publishing.
Of all the cats, which ones are the most obscure, the least known, and therefore most surprising?
LH: Many smaller cat species have never been the focus of an in-depth field study, and a number are yet to have even a single individual fitted with a radio-collar–one of the standard, most useful tools of wildlife research–among them the bay cat, Chinese mountain cat and flat-headed Cat.

Fortunately, I am starting to see more interest in the small cats. The Mohammed bin Zayed Species Conservation Fund does a marvelous job of supporting work on small felids, and a board trustee of Panthera, Bob Quartermain, helped establish the Small Cat Action Fund. As a result of these efforts, we have been able to begin the first comprehensive studies on some very little-known species including two long-term studies on the African golden cat, as well as help local conservationists launch new projects to reduce threats to endangered species such as the fishing cat and the Sunda clouded leopard.
The South American Pampas cat occurs in a wide variety of open habitats where it is vulnerable to predators- especially domestic dogs- on open ground so it rarely ventures far from shelter such as dense grass, scrub or rocky areas. La Pampa province, central Argentina. © Sebastian Kennerknect, courtesy of Bloomsbury Publishing.
The South American Pampas cat occurs in a wide variety of open habitats where it is vulnerable to predators- especially domestic dogs- on open ground so it rarely ventures far from shelter such as dense grass, scrub or rocky areas. La Pampa province, central Argentina. © Sebastian Kennerknect, courtesy of Bloomsbury Publishing.
Do you have a favorite species of wild cat?

“If I had to pick a favorite, it would probably be the lion.”

LH: If I had to pick a favorite, it would probably be the Lion. It is such a formidable animal, there is nothing quite comparable to watching a pride of lionesses walking across an African plain as they set out on the hunt; except for healthy adult male elephants, virtually anything is fair game to a large pride. And their sociality is unique. The fact that lions are the only cats to live in large extended family groups makes them a terrific subject for understanding the evolutionary forces that shape cat behaviour and ecology.

And of course, despite its high visibility in some African parks and reserves, the lion is increasingly endangered. A blue-ribbon team of many lion specialists led by Hans Bauer at Oxford University’s WildCru recently analyzed population data from 47 lion populations in Africa and found that the species is now declining in most regions of Africa except a handful of countries in southern Africa.
An Asiatic Lioness and cubs in the Gir Forest, India. Persecution and trophy hunting had reduced this population to around 25 individuals by the start of the 20th Century. Strict protection imposed in the early 1900s has resulted in a spectacular population rebound where now the challenge is a lack of habitat for further expansion. © Patrick Meier, courtesy of Bloomsbury Publishing.
An Asiatic Lioness and cubs in the Gir Forest, India. Persecution and trophy hunting had reduced this population to around 25 individuals by the start of the 20th Century. Strict protection imposed in the early 1900s has resulted in a spectacular population rebound where now the challenge is a lack of habitat for further expansion. © Patrick Meier, courtesy of Bloomsbury Publishing.
What are the major research questions we need to resolve to understand/conserve wild cats?

LH: Most species of cats are very poorly studied and we urgently need to know the basics; where they live, whether numbers are declining and what threats they are facing.
The world’s smallest cat (by weight), the rusty-spotted cat, Ranthambore National Park, India. © Santosh Saligram, courtesy of Bloomsbury Publishing.
The world’s smallest cat (by weight), the rusty-spotted cat, Ranthambore National Park, India. © Santosh Saligram, courtesy of Bloomsbury Publishing.
Even for a relatively familiar species such as the snow leopard, we are certain they occur in only 40 percent of their estimated range. In other words, 60 percent of the species’ range map entails areas where we have no recent survey data confirming their presence. It is very difficult to effectively conserve a species if we are not certain whether or not they even occur in a site!

Another great mystery in cat ecology is what happens during dispersal, when sub-adult cats (typically) leave their mother’s home range to seek their own range. It’s a critical period in the life of a cat when many individuals do not make it, especially as dispersal increasingly takes cats into human-dominated landscapes.

We need a much greater understanding of how cats can move through such anthropogenic habitats and how to foster safe passage, for example, by maintaining wooded corridors or building underpasses for cats to safely navigate dangerous highway crossings.
Relative to its size, the serval has the largest ears of any felid. When resting relaxed, as in this adult female in Kenya, the ears almost meet in the middle of the head. © vNina Siemiatkowski, courtesy of Bloomsbury Publishing.
Relative to its size, the serval has the largest ears of any felid. When resting relaxed, as in this adult female in Kenya, the ears almost meet in the middle of the head. © vNina Siemiatkowski, courtesy of Bloomsbury Publishing.
What would the world be like without wild cats?

LH: It would be a bleak world indeed. African savannah would be a tame, sad place without the sound of lions roaring at night. Many of the world’s ecosystems have lost one or more of the cat species that historically lived there, and all of them are less intact, less wild in some way.

“Reintroducing cougars…would be overwhelmingly beneficial for people.”


Aside from the terrible loss in conservation terms, that can have practical, costly implications for people. Where I live, in the northeast U.S., Anglo-Europeans quickly got rid of cougars and most other large carnivores soon after they settled here, which (in part) has produced a massive over-population of their main prey species, the white-tailed deer. A team at the University of Alaska recently calculated the consequences of reintroducing cougars into the northeast and found it would be overwhelmingly beneficial for people–that’s right, beneficial. Their models showed that, within 50 years of successful establishment, cougars would likely reduce deer densities and thus vehicle collisions with deers by 22 percent resulting in 53,000 prevented human injuries, 384 prevented human fatalities, and $4.41 billion in avoided costs.
There are very few observations of fishing cats hunting in the wild. Much of their behavior is inferred from captives in naturalistic enclosures with opportunities to forage, such as this individual in Singapore Zoo. © Nick Garbutt, courtesy of Bloomsbury Publishing.
There are very few observations of fishing cats hunting in the wild. Much of their behavior is inferred from captives in naturalistic enclosures with opportunities to forage, such as this individual in Singapore Zoo. © Nick Garbutt, courtesy of Bloomsbury Publishing.
Where are the best places to see wild cats?

LH: There is nowhere like iconic African savannah woodlands to see wild cats, and few places can compete with famous African game reserves like Etosha National Park (Namibia), Hwange National Park, (Zimbabwe), Kafue National Park (Zambia) and the Serengeti-Mara complex (Kenya-Tanzania).
To see less visible cat species requires more effort, but there are amazing opportunities these days that simply were not possible a decade or so ago. The Porto Jofre region on the Cuiaba River in Brazil’s Pantanal during the dry season (August-October) now promises almost guaranteed sightings of wild jaguars, as well as a chance to see ocelots and pumas.
India’s Hemis National Park and surrounding valleys are the only places I know where there is a reasonable chance of seeing snow leopards in the wild, but only in the winter when wildlife moves down into the valleys.
It is now possible to spot even the most endangered cat on earth, the Iberian Lynx; Spain’s Sierra Morena mountains and Doñana National Park have well-protected populations where the lynx have become fairly used to tourists.
Pages from "Wild Cats of the World" show illustrations of all 38 wild species of felids. Enlarge the image by clicking on it. Pages courtesy of Bloomsbury Publishing.
Pages from “Wild Cats of the World” show illustrations many wild species of felids. Enlarge the image by clicking on it. Pages courtesy of Bloomsbury Publishing.
What special attributes are there that cats have that would delight and surprise us?

“The cat family…might have more members than we currently know.”

LH: Perhaps one of the most surprising things about the cat family is that it might have more members than we currently know. During the writing of this book, geneticists at Brazil’s Universidade Federal do Rio Grande do Sul discovered that the species we had long called the Oncilla was actually two, separate species, the northern oncilla and southern oncilla. Even though they look very similar, molecular analysis shows they are genetically distinct and largely reproductively isolated.

As ever more sophisticated analyses are performed, I am sure more such “cryptic species” hiding in plain sight will be revealed and the book includes a preview of some of the likely forthcoming changes.
The African wildcat, progenitor of the familiar housecat. African wildcats in northern Africa and the Middle East often have very pale sandy colouration with cinnamon coloured markings, as this individual photographed in the Ouadi Rimé-Ouadi Achim Game Reserve, central Chad. © Tim Wacher, courtesy of Bloomsbury Publishing.
The African wildcat, progenitor of the familiar housecat. African wildcats in northern Africa and the Middle East often have very pale sandy colouration with cinnamon coloured markings, as this individual photographed in the Ouadi Rimé-Ouadi Achim Game Reserve, central Chad. © Tim Wacher, courtesy of Bloomsbury Publishing.
How can wild cats help us conserve nature?

LH: Because they often sit on the top of complicated trophic systems–food webs–large cats can be particularly effective umbrellas for biodiversity conservation. Cats require large tracts of mostly intact, wild habitat so the conservation of a population of lions, tigers or leopards boils down to effectively protecting those landscapes, and thus all the other species that rely on them.

A forthcoming paper published by Panthera scientists demonstrates this effect in the jaguar. The Jaguar Corridor–a network of protected areas and human-dominated landscapes connecting them–turns out to be very effective in also conserving a large number of co-occurring species, especially mammals.

Conserving cats = conserving millions of other species.

As I explain in the book, if we succeed in conserving robust populations of cats, we also succeed in conserving literally millions of other species and the intact, healthy ecosystems that are absolutely vital to all life–including people.

See more about Luke Hunter’s 2015 book: Wild Cats of the World.
So-called solitary cats are far more socially elastic than often portrayed. Here, two adult male leopards consort with a female (foreground) in oestrous, Sabi Sand Game Reserve, South Africa. The two males are almost certainly territorial neighbours and "dear enemies"--rivals who know each other and who chose to be tolerant when the costs of fighting are high for both. © James Tyrrell, courtesy of Bloomsbury Publishing.
So-called solitary cats are far more socially elastic than often portrayed. Here, two adult male leopards consort with a female (foreground) in oestrous, Sabi Sand Game Reserve, South Africa. The two males are almost certainly territorial neighbours and “dear enemies”–rivals who know each other and who chose to be tolerant when the costs of fighting are high for both. © James Tyrrell, courtesy of Bloomsbury Publishing.
Wild Cats of the World: The Full List of Species

Chinese Mountain Cat, Felis bieti; Wildcat, Felis libyca/silvertris/ornata/catus; Black-footed Cat, Felis nigripes; Sand Cat, Felis margarita; Jungle Cat, Felis chaus; Pallas’s Cat, Otocolobus manul; Leopard Cat, Prionailurus bengalensis; Flat-headed Cat, Prionailurus planiceps; Rusty-spotted Cat, Prionailurus rubiginosus; Fishing Cat, Prionailurus viverrinus; Marbled Cat, Pardofelis marmorata; Bay Cat, Catopuma badia; Asian Golden Cat, Catopuma temminckii; Serval, Leptailurus serval; Caracal, Caracal caracal; African Golden Cat, Profelis aurata; Geoffroy’s Cat, Leopardus geoffroyi; Oncillas Leopardus tigrinus and Leopardus guttulus; Margay Leopardus wiedii; Ocelot, Leopardus pardalis; Guiña, Leopardus guigna; Colocolo, Leopardus colocolo; Andean Cat, Oreailurus jacobita; Eurasian Lynx, Lynx lynx; Spanish Lynx, Lynx pardinus; Bobcat, Lynx rufus; Canada Lynx, Lynx canadensis; Jaguarundi, Herpailurus yagouaroundi; Puma, Puma concolor; Cheetah, Acinonyx jubatus; Snow Leopard, Uncia uncia; Clouded leopards, Neofelis nebulosa and Neofelis diardi; Tiger, Panthera tigris; Lion, Panthera leo; Leopard, Panthera pardus; Jaguar, Panthera once.

Luke Hunter is the President and Chief Conservation Officer of Panthera. Before joining Panthera, Hunter worked for the Wildlife Conservation Society as the head of their Great Cats Program and he taught wildlife ecology at universities in Australia and South Africa. 
Luke Hunter, Panthera, Naybandan Wildlife Reserve, Iran. Photo credit: Frans Lanting/Panthera.
At Panthera, he is especially focused on developing and scaling up solutions to widespread retaliatory killing of big cats by rural communities, and on improving the protection of wild cat habitat. He also works on reducing the impacts of legal recreational hunting on leopard and lion populations in Africa; in the Brazilian Pantanal to reduce the conflict between ranchers and jaguars; and in Iran on Persian leopards and the last surviving Asiatic cheetahs. 

He has written extensively about wild cats and their conservation, publishing widely in both scientific journals and popular media, including for Slate, The Huffington Post and National Geographic. He has published seven books including Cheetah (2003), Cats of Africa: Behavior, Ecology, and Conservation (2006) and Field Guide to Carnivores of the World (2011), which has been translated into Chinese, French and German editions. 

Follow Luke Hunter on Twitter.

source 

Mathematical model for animal stripes

Date:
December 23, 2015
Source:
Cell Press
Summary:
The back of a tiger could have been a blank canvas. Instead, nature painted the big cat with parallel stripes, evenly spaced and perpendicular to the spine. Scientists don't know exactly how stripes develop, but since the 1950s, mathematicians have been modeling possible scenarios. Now researchers assemble a range of these models into a single equation to identify what variables control stripe formation in living things.

This image shows simulations of Turing stripes. On the left, stripes are evenly spaced, but their direction is variable. On the right, a signaling gradient has made the stripes align in the same direction.
Credit: Tom Hiscock
 
The back of a tiger could have been a blank canvas. Instead, nature painted the big cat with parallel stripes, evenly spaced and perpendicular to the spine. Scientists don't know exactly how stripes develop, but since the 1950s, mathematicians have been modeling possible scenarios. In Cell Systems on December 23, Harvard researchers assemble a range of these models into a single equation to identify what variables control stripe formation in living things.

"We wanted a very simple model in hopes that it would be big picture enough to include all of these different explanations," says lead author Tom Hiscock, a PhD student in Sean Megason's systems biology lab at Harvard Medical School. "We now get to ask what is common among molecular, cellular, and mechanical hypotheses for how living things orient the directions of stripes, which can then tell you what kinds of experiments will (or won't) distinguish between them."

Stripes are surprisingly simple to model mathematically (and much of the early work on the subject was by Alan Turing of "The Imitation Game" fame). These patterns emerge when interacting substances create waves of high and low concentrations of, for example, a pigment, chemical, or type of cell. What Turing's model doesn't explain is how stripes orient themselves in one particular direction.

Hiscock's investigation focused on orientation--e.g., why tiger stripes are perpendicular to its body while zebrafish stripes are horizontal. One surprise from his integrated model is that it takes only a small change to the model to switch whether the stripes are vertical or horizontal. What we don't know is how this translates to living things--so, for a tiger, what is the variable that pushes the development of perpendicular stripes?

"We can describe what happens in stripe formation using this simple mathematical equation, but I don't think we know the nitty-gritty details of exactly what molecules or cells are mapping the formation of stripes," Hiscock says. Genetic mutants exist that can't form stripes or make spots instead, such as in zebrafish, but "the problem is you have a big network of interactions, and so any number of parameters can change the pattern," he adds.

His master model predicts three main perturbations that can affect how stripes orient: one is a change in "production gradient," which would be a substance that amplifies stripe pattern density; second is a change in "parameter gradient," a substance that changes one of the parameters involved in forming the stripe; and the last is a physical change in the direction of the molecular, cellular, or mechanical origin of the stripe.

Although this paper is based in theory, Hiscock believes that we are close to having the experimental tools that can decipher whether the math holds true in living systems.


Story Source:
The above post is reprinted from materials provided by Cell Press. Note: Materials may be edited for content and length.

Journal Reference:
  1. Tom W. Hiscock, Sean G. Megason. Orientation of Turing-like Patterns by Morphogen Gradients and Tissue Anisotropies. Cell Systems, 2015; 1 (6): 408 DOI: 10.1016/j.cels.2015.12.001


Cell Press. "Mathematical model for animal stripes." ScienceDaily. ScienceDaily, 23 December 2015. <www.sciencedaily.com/releases/2015/12/151223130234.htm>.
 
 

Have a Meowy Christmas from Through Golden Eyes

gif,Cats,santa hat

Thursday, December 24, 2015

Did Sabercats Have Spotted and Striped Coats?

by Brian Switek
Posted Wed, 12/23/2015
A Smilodon angles to get a better bite on a sloth at the La Brea Tar Pits and Museum. Photo by Brian Switek.
A Smilodon tries to get a better bite on a sloth at the La Brea Tar Pits and Museum. Photo by Brian Switek.
As far as fossil cats are concerned, there is no greater artist than Mauricio Antón. He has a knack for capturing the essence of fossil felids – be it a Homotherium pinning its prey or Dinofelis taking a cat nap – and I love that so many of Antón‘s illustrations feature spots and stripes. The sabercats I saw in books and stop-motion documentaries were never so colorful. They always seemed to wrapped in a relatively plain, dun-colored coat, making Smilodon look like a lion with abnormally-long canines.

Unfortunately, short of finding a frozen sabercat comparable to the steppe lion kittens announced earlier this year, we’ll  probably never know the precise span of sabercat shades. But maybe we can narrow the field a little. Today’s cats, both big and small, might be able to help us predict the presence of spots and stripes in their toothy, extinct relatives.

Today’s cats wear a beautiful array of coat patterns, from plain to dense constellations of spots and stripes. These different color options are largely dictated by two genes – Taqpep and Edn3 – the first of which lays down the general pattern of spots and stripes while the second controls local color differences, like hair banding. But these patterns don’t follow family lines. Just have a look at Panthera, the genus that includes most of the classic big cat species. There are lions (spots giving way to “plain” coloration), jaguars (large, filled-in spots), leopards (large open spots), snow leopards (large open spots), and tigers (vertical stripes) all within the same genus. Something else is more important than felid family ties in determining coat colors, and, in a 2010 study, ethologist William Allen and colleagues suggested that the answer is “ecology.”

After pulling images of 35 wild cat species from the web – because what else is the Internet good for other than cat pictures? – Allen and coauthors analyzed how coat patterns related to different species’ habitat preferences and activity patterns. Cat coats, they realized, “function as a background matching camouflage.” Cats in open, well-lit environments are more likely to have relatively plain coats while those living in forested habitats or active at primarily at night typically have complex patterns of spots and horizontal stripes.
Cats in open environments are more likely to have "plain" coats. Photo by K. Fink.
Cats in open environments, like mountain lions, are more likely to have “plain” coats. Photo by K. Fink.
There are some exceptions to this rule. Cheetahs, servals, and black-footed cats have spotted coats despite living in the same type grasslands as lions, while the elusive bay cat has a mostly-uniform coat despite prowling forests. Maybe these discrepancies have something to do with “microhabitats” or some sort of behavior not parsed out in the study, Allen and colleagues wrote, but for the most part a cat’s coat is more influenced by its ecology than who its related to.

The same probably held true for the sabercats. So while the forest-dwelling Dinofelis would be more likely to bear spots and stripes, Homotherium and other open-country cats may have lost their spots to be less conspicuous out in the grasslands.

So what about Smilodon? The cat is the ambassador for its long-fanged relatives as well as the Ice Age in general. While we may never know for sure, places like La Brea – where the sabercat is found in abundance – suggest that the iconic sabercat frequented shrubby chaparral. If the ecological connection held, therefore, Smilodon may have worn more subdued hues like the modern mountain lions that live in southern California today, or perhaps it was decked in solid spots much like the cheetah, serval, black-footed cat trio in Africa.

Despite its common nickname “saber-toothed tiger”, though, we can be pretty sure Smilodon didn’t have vertical stripes. Not only are sabercats and tigers distant relatives, but, as Allen and colleagues found, tigers are the only cats to have vertical stripes on their flanks. Perhaps the best we can hope for is that some Pleistocene artisan somewhere was inspired enough by the fossil cats to record their pelage palette for us to envision as Ice Age world that we just missed.

References:

Allen, W., Cuthill, I., Scott-Samuel, N., Baddeley, R. 2011. Why the leopard got its spots: relating pattern development to ecology in felids. Proceedings of the Royal Society B. doi: 10.1098/rspb.2010.1734
Kaelin, C., Xu, X., Hong, L., David, V., McGowan, K., Schmidt-Küntzel, Roelke, M., Pino, J., Pontius, J., Cooper, G., Manuel, H., Swanson, W., Marker, L., Harper, C., van dyk, A., Yue, B., Mullikin, J., Warren, W., Eizirik, E., Kos, L., O’Brien, S., Barsh, G., Menotti-Raymon, M. 2012. Specifying and sustaining pigmentation patterns in domestic and wild cats. Science. doi: 10.1126/science.1220893
Ortolani, A. 1999. Spots, stripes, tail tips and dark eyes: Predicting the function of carnivore colour patterns using the comparative method. Biological Journal of the Linnean Society. 67: 433-476


source

2015 was a bad year for Florida panthers


— Florida set a record at the end of November: 36 panthers had been killed. Last week, another milestone was established: the 38th and 39th big cats have met their end.

The death of a 2½-year-old female and a 6-year-old male continues the record-breaking trend. The male was found on C.R. 835 in Hendry County; Florida Fish and Wildlife officials determined last Tuesday the younger panther was run over by a vehicle near S.R. 82 in Collier County.

All 39 panther deaths – 28 killed by vehicles – were in Southwest Florida, where big cats live in the Everglades, Big Cypress National Preserve and other protected wildlife areas.

None of those big cats died in Highlands County, but Gator Howerton said Friday there are signs that panther territory is expanding.

“We hunt coyotes,” Howerton said. “We may have seen one panther a couple of times.”
A rancher northeast of Sebring has lost several calves, and Howerton was asked to assess why.

“We’ve never able to determine what it was,” Howerton said. “It was something bigger than a coyote. Maybe a bear, maybe a panther. But if it was, there’s nothing we could do about it. They are (federally) protected.”

Howerton thinks panthers are moving north into Highlands County: “I have seen tracks, seen photos. They are tracking all around.”

For ranchers and hunters, that’s bad sign. For environmentalists and conservationists, it’s good, Howerton said. “We want to keep it natural and wild. We don’t want to see an imbalance.”

The nearest panther death to Highlands County appears to a 3-year-old known to researchers as K387, who died on State Road 29 near Pollywog Road in Glades County the day before Thanksgiving.

Last year, 34 panthers were killed in Florida, compared to 20 the year before. In the three years before that, the numbers ranged from 24 to 27, commission statistics show.

“This is an all-time record for the most documented panther kills in one year, and now we’re close to an all-time record for cats killed by cars,” Jennifer Hecker told the Tampa Tribune. She directs natural resource policy at the Conservancy of Southwest Florida, an environmental group that seeks to protect Florida wildlife and its habitat.

Although state officials maintain the mortality trend is in direct proportion to the increase in the panther population, Hecker argues more panthers are dying because of the loss of habitat. As more people squeeze into the wilds of Southwest Florida, more roads are being built and more panthers try to get to new habitats, she said.

It’s not a good combination, Lisa Stoner of Forest Animal Rescue agreed. She and her husband, who have rescued 20 wild cats over the years, recently moved their wildlife rescue organization from Wauchula to Silver Springs in 2013.

“A few rogue males travel through Hardee County,” Stoner said. But she contends there are no breeding pairs in Highlands and Hardee. Admittedly without documentation, Howerton disagrees. He believes a few mates may live near the Avon Park Bombing Range.

“They’ve been trying to build underpasses for the highways,” Stoner said. But unchecked development is giving panthers – whose territory ranges for 200 miles – no place to go.

“They are taking habitat from the animals,” Stoner said. “We keep building and expecting animals to go around.”

Animals don’t look for “Panther Crossing” and “Bear Crossing” signs, Stoner said. “If we put underpasses a half a mile down the road, they are not going to walk parallel to the road and cross.”

Instead, Stoner said, builders need to determine where animal trails currently are and put underpasses at those points. Builders are required to include sewers, water lines and other amenities, she said. They should also be required to construct wildlife underpasses where necessary.

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Tuesday, December 22, 2015

Protecting African Lions (video)

Your Daily #Cats

Coto walking at the stream 

Coto walking at the stream by Tambako The Jaguar

Again, a photo of Villy walking... 

Again, a photo of Villy walking... by Tambako The Jaguar

Days numbered for lion-killing trophy hunters as Obama backs big cats

THE days of lions killed for kicks by wealthy trophy hunters finally look numbered.
Lion 
GETTY
President Obama backs big cats
 
President Barack Obama is giving the big cats more protection in the wake of the notorious slaughter of Cecil the lion.

America is upgrading the legal status of lions that will stop hunters from trying to ship heads, claws and skins back home after a safari at a time when numbers of the iconic animal are plunging.
There are fears the so-called King of the Beasts could vanish from the wild before the end of this century.

Walter Palmer FACEBOOK
Walter Palmer and his hunting friend pictured with Cecil
Conservationists say Americans are responsible for 60 per cent of all lion hunts in Africa, but until now they have not needed a permit to bring home a lion trophy they have killed overseas. The White House's move to strengthen the US Endangered Species Act will not only put two types of lion on a new legal footing but will also ban hunters who have broken wildlife laws in the past from importing trophies..
If we do not act on this crisis now, lions could disappear from the wild in our lifetime
Dr. Philip Muruthi
This will wound hunters such as Cecil's killer Walter Palmer, the Minnesota dentist who shot the black-maned lion with a bow and arrow during the summer. He had pleaded guilty in 2008 to making false statements to the US Fish and Wildlife Service about a black bear shot outside an authorised hunting zone.

Officially, the Fish and Wildlife Service are cautioning against linking the new orders with Cecil's death, describing the action as a redoubling of efforts to ensure that violators of wildlife laws do not benefit from importing wildlife products.

Key to protecting lions is the way the Obama administration has changed the animals' status under US law so that one subspecies found in western and central parts of Africa and genetically related to the Asiatic lion, numbering as few as 900 individuals, is now classed as endangered. This is the same footing as tigers, giant pandas and rhinos.

A second subspecies with a population as low as 17,000 animals and found in southern and eastern Africa is listed as threatened. In short, this means a permit for importing a trophy or live animal for the endangered lions will only be granted it aids survival.

For threatened lions, the proviso for a permit is that any imports must come from nations with sound conservation and use trophy hunting revenue to sustain lion numbers and deter poaching.
British-based charity LionAid tonight welcomed the US moves. A spokeswoman said: "The listing of African lions by the USFWS is a welcome step forward for lion conservation. For the first time, lion trophy hunting will be assessed as to whether it has a positive impact on the conservation of the species.

Cecil the lionAP
Cecil the lion
 
"Equally, it will not only be information from the lion range states that will be required: verification will be demanded. LionAid believes that these stricter rules imposed on US trophy hunters, who currently are responsible for over 60 per cent of African wild lion hunts, will have a significant positive impact on lion populations which have for far too long been hunted without due care to a species already in catastrophic decline."

The African Wildlife Foundation also applauded Washington's measures. Dr. Philip Muruthi, African Wildlife Foundation's vice president of species protection, said: "This is a welcomed move by the US government and one we hope will give some relief to Africa's lions, which face many threats.

PalmerFACEBOOK
 
Zimbabwe authorities decided not to charge Palmer for the killing "If we do not act on this crisis now, lions could disappear from the wild in our lifetime, and that would have disastrous consequences."
AWF chief executive Dr Patrick Bergin added: "We simply cannot afford additional human-caused mortalities, which is why we are against the sport hunting of lions. "A large percentage of all lion trophies are imported into the US by American hunters. Both the US government and American hunters have a responsibility to ensure sport hunting does not negatively impact wildlife populations in Africa."

Madhya Pradesh: Dogs get shots to save Panna tigers

About 600 stray and pet dogs in 13 villages in the buffer zone of the reserve now sport an identity collar around their necks.
 
Written by Milind Ghatwai | Bhopal | Published:December 22, 2015 
 
Vaccination of dogs, Panna Tiger Reserve, stray dogs, pet dogs, rabies, indian express 
A week from now, teams will fan out in the villages and trace the same dogs to administer a booster dose to neutralise chances of the canines contracting, and, more importantly, passing on the deadly diseases to the big cats.
 
Vaccination of dogs has become a priority for Panna Tiger Reserve, that rose from infamy to script a turnaround by successfully reintroducing the wild cats.

About 600 stray and pet dogs in 13 villages in the buffer zone of the reserve now sport an identity collar around their necks. This is proof that they have been vaccinated for eight diseases like canine distemper and rabies.

A week from now, teams will fan out in the villages and trace the same dogs to administer a booster dose to neutralise chances of the canines contracting, and, more importantly, passing on the deadly diseases to the big cats.

The 600 dogs, most of them stray, were chased and netted over the last fortnight by teams of five volunteers who collected blood samples, vaccinated them and put collars on them for easy identification.

The vaccination drive, which has made some dog owners doubtful and suspicious of the motive, was triggered by the death of a tiger in August due to canine distemper virus.

Dr Sanjeev Kumar Gupta, the veterinary doctor at the reserve, told The Indian Express, “We are appealing to villagers for cooperation.”

There are 150 villages in the reserve’s buffer area.


source

Tiger tourism set for a big boost in Adilabad

December 22, 2015 
  • S. Harpal Singh
  • (Left) Forest officials on the trail of a tiger in Kawal Tiger Reserve in Adilabad district. (Right) A tiger at KTR.- Photos: By Arrangement
    (Left) Forest officials on the trail of a tiger in Kawal Tiger Reserve in Adilabad district. (Right) A tiger at KTR.- Photos: By Arrangement

The arrival of a couple of wild cats within a span of three months at the Kawal Tiger Reserve (KTR) in Adilabad district has already had conservationists raising toasts.

It should be renamed as Kamal Tiger Reserve,” suggested an excited tourist at the Kawal Tiger Reserve (KTR) in Adilabad district as he animatedly discussed about the trend of tiger influx in the park. 

The arrival of a couple of wild cats, a male and a female, within a span of three months has already had conservationists raising toasts. 

“More tigers will come as they feel safe here,” predicted KTR wildlife researcher Jogu Yellam. “A lot of effort has gone into strengthening anti-poaching activity,” he stated, giving reasons for tigers to arrive at KTR in the coming months. 

There is also the talk of urgency in developing tiger tourism even as conservation efforts are strengthened at the facility. “Kawal should soon become an ecological paradise and tiger tourism here should rival the one at Tadoba Andhari Tiger Reserve in the neighbouring Chandrapur district of Maharashtra, if not improving upon it,” observed K. Ashwin Rao, a realtor from Hyderabad, also a well known eco-tourism enthusiast from Hyderabad. 

Even those who are not die hard wildlife enthusiasts are likely to welcome development of tiger tourism at the place which is evident from the excitement of Srinivas Reddy, a medicine and drug store owner from Karimnagar. 

He became the first tourist to have sighted a tiger in the wild from the safari jeep on which he was moving in the jungles on December 20. 

“The government should look into this aspect seriously as there is a lot of potential for tiger tourism at KTR,” stated Mr. Rao from his experience of the park. 

“The management of the place should be professional, locals should be trained to become naturalists before incorporating them in the scheme of things,” he suggested some of the measures. 

The conservation enthusiast also underlined the need for sensitising tourists about some of the finer aspects of eco-tourism. The eco-tourism enthusiast drew underscored the need for people maintaining silence and refraining themselves from polluting the area. 

“We have plans of increasing protection for the tigers and a Tiger Protection Force unit has been sanctioned for Kawal,” revealed KTR’s Jannaram Division Deputy Director B. Ravinder.
“In view of the vulnerability of the big cats, we will monitor the movements of visitors too,” he added, while giving details of the conservation plan. 

KTR should soon become an ecological paradise and tiger tourism should rival the one at Tadoba Andhari Tiger Reserve in Chandrapur district of Maharashtra, if not improving upon it. 

-K. Ashwin Rao, Eco-tourism enthusiast.

Thank you everyone! Victory for lions!


Cheryl Semcer
NJ

Confirmed victory

This petition made change with 1,358,111 supporters!
 
Dec 21, 2015 — Today has been a historic day for lions. Our voices have been heard and USFWS has listed two subspecies of lion as endangered and the rest as threatened. Although we want to see ALL lion listed as endangered this is a perfect starting point.

Thank you to each and every one of you that signed this petition and for speaking out against lion trophy hunting.

Cecil did not die in vain. Because of him the world has opened their eyes to the horrors of lion trophy hunting and change is being made. We will forever be indebted to him.

"According to Adam M. Roberts, CEO of Born Free USA and Born Free Foundation, "It has been a very long four years waiting for this decision, with each year seeing more lions slaughtered by hunters for trophies. This is a victory and we applaud USFWS for agreeing that these animals deserve significant international protection under the ESA: popularly considered one of the world's most important conservation laws. There is now hope for future generations to be able to witness the beauty of the lion in the wild."


San Francisco Could Get a Disturbing Bridge With Glowing-Eyed Cats

The proposed “Catbridge” would be festooned with demonic-looking felines.
Image Peter Shelton
Peter Shelton
People afraid of cats might vigorously oppose this planned public artwork in San Francisco, as it’s populated with mutant felines whose peepers gleam in the dark.

The “Catbridge,” designed by L.A. sculptor Peter Shelton, would appear on a downtown overpass as part of a convention center-expansion project. It’s one of three finalists vying for acceptance in early 2016; the other two feature objects that look like “simple freehand drawings” and “ocean encrustations,” respectively.

But let’s get back to the cats. In his proposal, Shelton explains he was inspired by the two-faced Roman god Janus and “kitties in the night” such as these:
Here’s more from the artist:
For the Howard Street Bridge, I propose to render five to six pedestal mounted cast bronze sculptures based on the abstracted forms of cats.  The cat is the consummately adapted urban animal that is as much a part of the day scape and as of the night.
I envision these cat forms on pedestals roughly two feet in diameter. The eyes of these cats would light up at night in keeping with the concept of the multi-facing Janus figures of antiquity. These cats would have at least two faces and two sets of eyes facing in both directions of the bridge.
The glowing eyes of the cats would lead us up and over the otherwise darkened bridge. It is important that the experience of the sculptural installation is as credible and poetic during the day as it is at night.
It’d be worth getting this thing built if only to see the neighborhood’s actual cats perform 10-foot vertical leaps of fear. Check out these drawings:
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Lions Gain New Endangered Species Protections


by Mindy Weisberger, Senior Writer   |   December 21, 2015
African lions will now be protected under the Endangered Species Act, announced today by U.S. Fish and Wildlife Service officials.
Credit: Heidi Ruffler / USFWS
Two lion subspecies will now be protected by the Endangered Species Act, the U.S. Fish and Wildlife Service (FWS) announced today (Dec. 21).

Panthera leo melanochaita, a lion subspecies living in eastern and southern Africa, will be listed as threatened, while Panthera leo leo, a subspecies found in western and central Africa and in India, will receive endangered status, FWS officials said. New genetic data prompted the agency to recognize western and central African lions as subspecies P. leo leo, and spurred their"endangered" classification.

"Subspecies" defines groups within species that are genetically distinct but still capable of interbreeding. A 2014 proposal had prompted the FSW to grant the western and central African lions "threatened" status. But according to today's FSW announcement, scientific information indicated that lions in those areas were actually more closely related to Asiatic lions and that they should be identified as such — P. leo leo. [In Photos: A Lion's Life]


And because P. leo leo populations are significantly smaller than P. leo melanochaita, the agency determined that "endangered" status was more appropriate for the group. Only 1,400 P. leo leo individuals remain in the wild — about 900 in 14 African groups and around 500 in India.
P. leo melanochaita's numbers are more reassuring, with an estimated 17,000 to 19,000 animals living across southern and eastern Africa, mostly in protected areas. That may seem like a lot, but estimates of lion populations in the mid-20th century placed them at around 200,000 individuals, FWS Director Dan Ashe said today at a news briefing. Ashe went on to add that the expansion of human populations and activities will only continue to threaten the lions and their habitats.

Established in 1973, the Endangered Species Act (ESA) was signed into law to conserve species and their habitats by identifying which species are most vulnerable to extinction and enforcing policies to protect them. The U.S. agencies administering the ESA are the U.S. Fish and Wildlife Service, which is primarily responsible for plants and animals on land and in freshwater bodies like rivers and lakes, and the National Ocean and Atmospheric Administration's National Marine Fisheries Service (NMFS), which oversees marine wildlife.

Under the ESA, species are listed as "endangered," which describes "any species which is in danger of extinction throughout all or a significant portion of its range," and "threatened," identifying "any species which is likely to become an endangered species within the foreseeable future." A 2013 list published by the FWS identified 2,054 species worldwide as endangered or threatened, of which 1,436 are native to the United States.

In a statement, the FWS cited decades of alarming and continuous decline in African lion populations as one of the chief reasons for the status change. Factors identified as the biggest threats to lions included habitat loss due to agriculture, killings to prevent or retaliate against lions' preying on livestock, and inadequate management of protected areas.

In July 2015, the death of the African lion "Cecil" at the hands of an American hunter sparked waves of outrage across social media channels, along with calls for stronger conservation measures to protect African lions. During today's news briefing, Ashe said that, while hunting is not responsible for the recent sharp decline of African lion populations, steps must be taken to ensure that revenue from hunting provides economic support for lion management and conservation efforts.

Beginning in 30 days, the U.S. import of any live lion specimen, products or hunting trophies will require a permit issued by the FWS, Ashe said. During the application process, the agency will determine whether the activity in question contributed to the enhancement of the species in the wild. Tying economic gain to lion conservation, Ashe said, would also encourage local communities to engage in developing sustainable solutions for Africa's lions. Otherwise, "people will continue to see them as a threat," he said, "and not a benefit."

The ESA ruling will be added to the Federal Register on Dec. 23, 2015, and will go into effect on Jan. 22, 2016.

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