Category: Environment

  • Good food puts bees in good mood

    {Biologists at Queen Mary University of London (QMUL) have discovered that after bumblebees drink a small droplet of really sweet sugar water, they behave like they are in a positive emotion-like state.}

    We all know what it’s like to taste our favourite food and instantly feel good about the world but the same phenomenon may happen in bumblebees.

    Biologists at Queen Mary University of London (QMUL) have discovered that after bumblebees drink a small droplet of really sweet sugar water, they behave like they are in a positive emotion-like state. The results have been published in the journal Science.

    The findings suggest that insects have states that fit the criteria of emotions and open up new avenues for research into positive emotions in relatively simple nervous systems.

    “Investigating and understanding the basic features of emotion states will help us determine the brain mechanisms underlying emotion across all animals,” said lead author Dr Clint J Perry.

    The researchers trained bees to find food at a blue flower and no food at a green flower, and then tested the bees on a new blue-green flower. Bees that drank a small droplet of sugar water prior to the test took less time to land on the ambiguous-coloured flower. Other experiments showed that this behaviour wasn’t due to bees just getting more excited or searching faster.

    This indicates that the sweet sugar water may be causing a positive emotion-like state in bees, similar to humans and other animals.

    Senior author Professor Lars Chittka said: “The finding that bees exhibit not just surprising levels of intelligence, but also emotion-like states, indicates that we should respect their needs when testing them in experiments, and do more for their conservation.”

    In another experiment, bees were subjected to a simulated spider attack, something common in nature. Bees that received the sugar water took less time to reinitiate foraging after the attack.

    Luigi Baciadonna, co-author and PhD candidate at QMUL added: “Sweet food can improve negative moods in human adults and reduce crying of new-borns in response to negative events. Our results suggest that similar cognitive responses are occurring in bees.”

    Further experiments indicate that neurochemicals involved in emotional processing in humans may play a role in the emotion-like behaviours seen in bees.

    The researchers hope the results will prompt further investigation into how small rewards affect bees perception of the world, how emotions may have evolved and determine the underlying mechanisms of emotional states in the brain.

    Photo of a bee drinking a droplet of sugar water.
  • New safeguards agreed for world’s most trafficked mammal

    {A little known species driven to the edge of extinction by poaching has gained extra protection at the Cites meeting in South Africa.
    }

    Pangolins are slow moving, nocturnal creatures found across Asia and Africa but over a million have been taken from the wild in the last decade.

    The trade is being driven principally by demand for their scales, which are used in traditional Chinese medicine.

    Now the Cites meeting has agreed to ban all trade in eight species of Pangolin.

    {{Scales of destruction}}

    As the world’s only mammal covered in scales, these species are sometimes known as scaly anteaters.The creatures have very long, sticky tongues.These come in very handy when searching for ants, their favourite food.

    However these scales, which the animal uses for protection, are one of the key reasons for their demise.

    In traditional Chinese medicine they are dried and roasted and used for a variety of ailments including excessive nervousness, hysterical crying, palsy and to aid lactation.

    As well as the scales, the meat of the Pangolin is eaten as bush meat in many parts of Africa and in China it has become something of a delicacy.

    The level of illegal trade is astonishing. Between January and September this year, authorities seized more than 18,000 tonnes of Pangolin scales across 19 countries.

    The majority of these scales came from African pangolins in Cameroon, Nigeria and Ghana. Experts estimate that each kilogramme of scales requires the killing of three or four animals. It is believed that pangolins make up around 20% of all illegal trade in species.

    {{Zero quotas}}

    All pangolins are already listed on Appendix II but with a zero quota for Asian species. This has caused major problems say conservationists.

    “When pangolins are just in their product forms as scales or meat it’s impossible to tell the Asian ones from the African ones,” said Jeff Flocken from the International Fund for Animal Welfare (IFAW).

    “Up to now all Pangolins were on Appendix II with zero quota trade in the Asian species, but what that allowed was a massive trade in African species and also enabled a whole mechanism for laundering Asian ones as African ones which are legal.”

    Here at the Cites meeting, range state countries proposed that four species of African pangolins and four Asian varieties be up-listed to Appendix I meaning that all commercial trade would be stopped and greater protection demanded from law enforcement.

    There was widespread support for the move, with few dissenting voices. All over the large hall, stuffed toy pangolins could be seen on desks, indicating sympathy for the plight of this little known species.

    Indonesia objected to the up-listing of two Asian species, the Sunda and Chinese pangolins but the conference voted overwhelmingly to include them.

    “When pangolins are just in their product forms as scales or meat it’s impossible to tell the Asian ones from the African ones,” said Jeff Flocken from the International Fund for Animal Welfare (IFAW).

    “Up to now all Pangolins were on Appendix II with zero quota trade in the Asian species, but what that allowed was a massive trade in African species and also enabled a whole mechanism for laundering Asian ones as African ones which are legal.”

    Here at the Cites meeting, range state countries proposed that four species of African pangolins and four Asian varieties be up-listed to Appendix I meaning that all commercial trade would be stopped and greater protection demanded from law enforcement.

    There was widespread support for the move, with few dissenting voices. All over the large hall, stuffed toy pangolins could be seen on desks, indicating sympathy for the plight of this little known species.

    Indonesia objected to the up-listing of two Asian species, the Sunda and Chinese pangolins but the conference voted overwhelmingly to include them.

    “This is a huge win and rare piece of good news for some of the world’s most trafficked and endangered animals,” said Ginette Hemley from WWF.

    “Giving Pangolins full protection under Cites will eliminate any question about legality of trade, making it harder for criminals to traffic them and increasing the consequences for those who do.”

    Some objections had been expected about the African species but none materialized and the Conference of the Parties accepted the extra safeguards without a vote.

    “Everyone wants this, law enforcement wants this,” said Jeff Flocken from IFAW.

    “When they are listed as Appendix I there will be no mistake as to what’s legal or illegal, because they will all be illegal.

    “This is a clear message from the world that the pangolins are in dire need of protection and we are going to try and make it happen.”

    Pangolins are found all over African and Asia but their numbers have plummeted because of illegal trade
  • Poaching behind worst African elephant losses in 25 years

    {Africa’s overall elephant population has seen the worst declines in 25 years, mainly due to poaching — according to IUCN’s African Elephant Status Report launched at the 17th meeting of the Conference of the Parties to CITES, taking place in Johannesburg, South Africa.}

    The report is an authoritative source of knowledge about the numbers and distribution of African elephant populations across their 37 range states in sub-Saharan Africa.

    It presents more than 275 new or updated estimates for individual elephant populations across Africa, with over 180 of these arising from systematic surveys. The report summarizes — for the first time in almost a decade — elephant numbers at the continental, regional and national levels, and examines changes in population estimates at the site level.

    Based on population estimates from a wide range of sources — including aerial surveys and elephant dung counts — the estimates for 2015 are 93,000 lower than in 2006. However, this figure includes 18,000 from previously uncounted populations. Therefore, the real decline from estimates is considered to be closer to 111,000. The continental total is now thought to be about 415,000 elephants, although there may be an additional 117,000 to 135,000 elephants in areas not systematically surveyed.

    The surge in poaching for ivory that began approximately a decade ago — the worst that Africa has experienced since the 1970s and 1980s — has been the main driver of the decline, while habitat loss poses an increasingly serious, long-term threat to the species, according to the report.

    “These new numbers reveal the truly alarming plight of the majestic elephant — one of the world’s most intelligent animals and the largest terrestrial mammal alive today,” says IUCN Director General Inger Andersen. “It is shocking but not surprising that poaching has taken such a dramatic toll on this iconic species. This report provides further scientific evidence of the need to scale up efforts to combat poaching. Nevertheless, these efforts must not detract from addressing other major and increasingly devastating threats such as habitat loss.”

    With over 70% of the estimated African elephants, Southern Africa has by far the largest number of the species — approximately 293,000 elephants in systematically surveyed areas. Eastern Africa holds about 86,000 (20%) estimated elephants, while Central Africa has about 24,000 estimated elephants (6%). West Africa continues to hold the smallest regional population with approximately 11,000 (under 3%).

    Eastern Africa — the region most affected by poaching — has experienced an almost 50% elephant population reduction, largely attributed to an over 60% decline in Tanzania’s elephant population. Although some sites have recorded declines, elephant numbers have been stable or increasing since 2006 in Uganda, Kenya, and Rwanda, and range expansion has been reported in Kenya.

    Central Africa’s forest elephant population has been substantially affected by poaching for ivory, since the 1990s. The Democratic Republic of Congo used to hold one of the most significant forest elephant populations in Africa, which has now been reduced to tiny remnants of its former size. Gabon and Congo now hold Africa’s most important forest elephant populations but both have been affected by heavy poaching in recent years, as have the forest and savannah populations of Cameroon. The savanna populations of Chad have taken heavy losses and those in the Central African Republic have almost completely disappeared.

    West Africa’s elephant populations are mostly small, fragmented and isolated with 12 populations reported as lost since 2006 in Côte d’Ivoire, Ghana, Guinea Bissau, Sierra Leone, Togo, Guinea and Nigeria. The elephant population in the trans-frontier “WAP” complex that straddles the border between Benin, Burkina Faso and Niger remains the strong-hold of West Africa’s elephant population.

    While poaching has not had the same impact in Southern Africa as in other areas, the region is now also facing the emergence of a growing poaching threat. Population declines have been observed in Mozambique and some areas in Zimbabwe, while major populations in Namibia, South Africa and Zimbabwe are stable or increasing, and there is evidence of elephant range expansion in Botswana. There is still uncertainty about the size of the KAZA trans-frontier elephant population — the single largest on the continent — and it remains critical to undertake a coordinated survey of this population.

    “This is the first time since 2006 that we have produced an African elephant status report with a continent-wide update and analysis of elephant numbers and distribution,” says Holly Dublin, Chair of the IUCN Species Survival Commission’s African Elephant Specialist Group (AfESG) who led the preparation of the report. “This report highlights how important it is to regularly monitor, assess and analyse the status of the African elephant. Understanding population numbers and their distribution is crucial in order to recognise threats faced by the species, target conservation actions and assess their effectiveness. This has been possible thanks to the IUCN African Elephant Specialist Group’s incredible network of experts and partners.”

    Estimates for savanna populations across the continent have improved in both reliability and coverage and many forest populations in Central Africa have been surveyed for the first time.

    “This report not only provides information on the changes in elephant numbers but, because it is spatial, it also shows where these changes are occurring,” says first author of the report Chris Thouless, Chair of the AfESG’s Data Review Working Group. “It tracks many elephant populations over time at the site level, allowing us to learn more about why elephant populations are lost or persist in certain areas. This detailed information is essential for understanding what is driving changes in elephant populations.”

    The report has been produced by the IUCN Species Survival Commission’s African Elephant Specialist Group, in partnership with Vulcan Inc, a Paul G. Allen company, and Kenya-based charity Save the Elephants. It draws on data from the African Elephant Database of the IUCN African Elephant Specialist Group, which is the most comprehensive spatial database on the status of any wide-ranging mammal species in the wild.

    Baby African bush elephant walking with mother, Masai Mara, Kenya.
  • Report: Africa’s elephants face worst drop in 25 years

    {Conservation group blames poaching for 20 percent decline in elephant population over last decade.}

    Africa’s elephant population has suffered its largest drop in 25 years, the International Union for Conservation of Nature (IUCN) has said, blaming the plummeting numbers on poaching.

    Based on 275 estimates from across the continent, a report, released on Sunday by the conservation group, put Africa’s total elephant population at around 415,000, a decline of around 111,000 over the past decade.

    It is the first time in 25 years that the group’s African Elephant Status Report has reported a continental decline in numbers, with the IUCN attributing the losses in large part to a sharp rise in poaching, which is mainly done for the animals’ tusks that are sold in the flourishing global ivory trade.

    “The surge in poaching for ivory that began approximately a decade ago – the worst that Africa has experienced since the 1970s and 1980s – has been the main driver of the decline,” IUCN said in a statement.

    Habitat loss is also increasingly threatening the species, the group said.

    IUCN chief Inger Andersen said the numbers showed “the truly alarming plight of the majestic elephant”.

    “It is shocking but not surprising that poaching has taken such a dramatic toll on this iconic species,” she said.

    The IUCN report was released at the world’s biggest conference on the international wildlife trade, taking place in the South African city of Johannesburg.

    WATCH: Who’s killing the elephants?

    Thousands of conservationists and government officials are seeking to develop international trade regulations aimed at protecting different endangered species.

    A booming illegal wildlife trade has put huge pressure on an existing treaty signed by more than 180 countries – the Convention on International Trade in Endangered Species (CITES).

    The plight of Africa’s elephants, targeted for their tusks, will be one of the most debated topics at the meeting which will consider several proposals on whether to tighten or ease controls on the trade in ivory.

    Many conservationists and government officials are seeking to develop international trade regulations aimed at protecting different species
  • Deep divisions over elephants to dominate key species meeting

    {The world’s biggest conference on species protection has opened in South Africa amid concern and division over the survival of elephants.}

    The Convention on the International Trade in Endangered Species (Cites) will address proposals impacting more than 500 plants and animals.

    But elephants are likely to top the bill with countries bitterly divided over the best way to protect the ponderous pachyderms.

    The meeting lasts until 5 October.

    {{Poaching surge}}

    Billed as the largest gathering in the 43-year history of the convention, the 17th Conference of the Parties (COP) will see more than 2,500 delegates from more than 180 countries come together in Johannesburg.

    While there are proposals affecting lions, sharks, rhinos, pangolins and dozens of other species, the main focus will be on elephants.

    There have been growing international concerns about the surge in poaching for ivory that has seen elephant numbers plummet by 30% in the past seven years.

    And while Cites Secretariat has argued that there has been a slowdown in the trend, some new figures released at the meeting cast doubt on this view.

    The Elephant Trade Information System (ETIS) is the world’s most comprehensive database on the illicit trade in elephant products. It is managed by Traffic, the wildlife monitoring network, on behalf of Cites.

    Speaking to BBC News, Dr Richard Thomas from Traffic said that new information presented at this meeting suggested that what appeared to be a downturn in illegal ivory activities in 2014 might have been a false dawn.

    “The indications were that the 2014 figure, it looked like there was a drop, now the 2015 data has been put in there for ivory it is certainly at the level it was in 2012/13 and that’s very disheartening,” he said.

    “We don’t know what it means in terms of poaching but it’s likely to be a fairly simple equation, with high levels of ivory meaning high levels of poaching.”

    At this meeting there are a number of proposals reflecting very different approaches to the elephant problem.

    Namibia and Zimbabwe are seeking to liberalise the restrictions that see them prevented from selling ivory, even though the elephants in their countries are categorised as Appendix II, a lower level of protection that normally allows countries to trade in a species or its parts.

    However, a counter proposal from a number of other African countries seeks to raise all African elephants to Appendix I to ensure there is no legal loophole for any ivory trade.

    {{Legacy issues}}

    Several conservation groups are backing this tougher stand.

    “There is no greater protection for imperilled species from detrimental trade than an Appendix I listing,” said Iris Ho from Humane Society International.

    “A continued split-listing of the African elephant is akin to a declaration by Cites to open the ivory trade for business. The conservation legacy of Cites is at stake, and so is the survival of the African elephant.”

    Many have also taken issue with the Cites Secretariat, who have advised countries meeting here to reject the up-listing of all African elephants to Appendix I, arguing that it might provoke some nations to opt out of Cites altogether and resume an unsupervised trade.

    “The secretariat has over-stepped its powers in trying to influence policy before a proposal has even been discussed,” said Robert Hepworth, a former chair of the Cites Standing Committee and now an adviser to the David Shepherd Wildlife Foundation.

    There are other underlying factors that bring an added urgency to the discussions here on elephants.

    Back in 2007 similar divisions on the issue of elephants ultimately forced a compromise at Cites, where a one-off sale of ivory was allowed in 2008 and all other proposals for sales were off limits until 2017.

    “One of the parts of that deal in 2007 was that there would be a process devised, a mechanism would be established, to sell ivory and that hasn’t happened,” said Dr Thomas.

    “The countries that signed up to it in the belief that they would be able to trade in the future, they don’t want to see that part of the deal fall through.”

    The illegal trade in ivory has seen elephant numbers plummet
  • Cheetah is now ‘running for its very survival’

    {Pitiful scenes of cheetah cubs lying emaciated and bewildered highlight one of the cruellest but least-publicised examples of illegal wildlife trafficking.}

    Baby cheetahs are so prized as exotic pets that entire litters are seized from their mothers when they may only be four to six weeks old.

    Each tiny animal can fetch as much as $10,000 on the black market and end up being paraded on social media by wealthy buyers in Gulf states.

    But the trade exacts a terrible toll on a species that claims a superlative status as the fastest land animal on the planet but which now faces a serious threat to its survival.
    According to the Cheetah Conservation Fund, some 1,200 cheetah cubs are known to have been trafficked out of Africa over the past 10 years but a shocking 85% of them died during the journey.

    Dr Laurie Marker, the trust’s director, describes the horrific conditions involved in shipping the animals from their habitats in northern Kenya, Somaliland and Ethiopia by land and sea to the Arabian Gulf.

    “They’re probably just thrown into a crate, living in their own faeces, travelling for days without proper food, and many of them end up dead on arrival at wherever that place would be, and maybe one or two living out of a pile that are dead.”

    And those that do make it into the hands of new owners usually die rapidly because they are denied the chance to exercise and are given an inadequate diet.

    Dr Marker says that they’re often kept in “chicken coop-sized pens” which are far too small for them.

    “And this is an animal that is the fastest land animal that is used to living in huge home ranges of 800 sq km. Most of those cheetahs don’t make it over a two-year period of time in captivity.”

    With the total of adult cheetahs living in the wild now numbering less than 7,000, the concern is that seizures of an estimated 200-300 a year could drive some of the remaining populations, which are already diminished, to extinction.

    The poaching comes on top of the long-running destruction of the cheetahs’ habitats. The animals tend not to thrive in the confines of national parks where other predators dominate, so they live outside protected areas and are more exposed to conflict with people.

    The threat to the cheetah will be raised at the CITES COP17 conference being held in Johannesburg over the next fortnight.

    One criticism of the conservation movement is that it has recently been doing a better job highlighting the plight of the giants of African wildlife, the elephants and the rhinos, compared with other iconic species whose existence is equally at risk.

    As a vet working in Kuwait, Jill Mullen saw for herself how easily cheetah cubs were imported despite the existence of controls under the CITES convention.

    Now back in the UK, she told me how her surgery would see as many as six cubs in a single day. All of them would be suffering from dehydration, malnutrition and a common virus known as panleukopenia against which the cubs have no immunity.
    Usually, only one of the six would survive.

    “I would stand on the soapbox to explain to the owners why it was wrong to have these animals as pets, that they’re endangered in the wild, and are not designed to be kept in living rooms and in villas.

    “But in the end I had to swallow the feeling that everything was wrong because that was my job.”

    Ms Mullen found that most owners did not know about the CITES restrictions or care about them.

    “You have the car and the boat but nothing tops having an exotic pet and, if they can buy it, it doesn’t matter about the legality.”

    During her time in Kuwait, there was an attempt by the authorities to clamp down, and vets like her were banned from handling cheetahs and other endangered animals. But she believes this drove the trade underground.

    On the agenda in Johannesburg is a quest to raise awareness in buyer countries of the dangers the trade poses to the cheetah.

    One idea is to persuade internet platforms to join the fight – many carry social media pictures taken by cheetah owners showing off their animals. Others allow dealers to offer cheetah cubs for sale.

    Another initiative is to draw up plans for how to handle cheetahs if they are confiscated – if the authorities do get tough, large numbers may suddenly need to be housed.

    Already when cheetahs become too big, or their owners find that they cannot care for them, the animals are released into the streets and found dead or weakened.

    But there is a sense that time is not on the side of a species whose very fame may be the cause of its demise.

    As Dr Marker puts it, “the cheetah is running the most important race of its life, and that’s for its very survival and its survival is in human hands”.

    The lucky ones: These young cheetahs were rescued
  • Species body says extra elephant protection could boost ivory trade

    {The UN body that oversees trade in endangered species, says it will oppose efforts to increase global protection for elephants.}

    The Convention on International Trade in Endangered Species, known as Cites, begins a key meeting this weekend with many African countries are pushing for stronger safeguards for elephants.

    It’s estimated that around 20,000 are killed each year for their tusks.

    But Cites says that tougher rules could backfire and boost the trade in ivory.

    {{Global oversight}}

    Every three years, teams of officials from all the member states meet for the Cites Conference of the Parties (COP).

    This is the major decision making body for the UN organisation that regulates trade in endangered species of flora and fauna for 183 members.

    Cites works by classifying these species into one of three appendices with different levels of protection and different rules on trade. A more in-depth guide on the organisation’s background, working methods and impact can be found here.

    This year’s meeting in Johannesburg will consider dozens of proposals on regulating the trade in everything from tiny frogs to sharks, to trees and flowers as well as the more high profile threatened species such as rhinos, lions and tigers.

    But it is the question of how to deal with the current poaching crisis in elephants that is likely to be top of the bill at this the 17th COP in the Convention’s 43 year history.
    The latest research indicates that some 30% of Africa’s elephants have disappeared in the last seven years alone. The current rate of decline is primarily due to poaching for ivory that ends up in China, Thailand, Vietnam and other markets, mainly in the Far East.

    Such has been the scale of the poaching in some parts of Africa, that countries like Tanzania and Mozambique have lost half their elephant populations between 2009 and 2015.

    But in Uganda and South Africa, populations have grown while they have remained stable or declined by smaller amounts in countries like Zimbabwe.

    At present, all African elephants, except those in South Africa, Zimbabwe, Botswana and Namibia, are listed in Cites Appendix I, meaning that any commercial trade in specimens or parts is banned.

    In the southern African states, the animals are listed as Appendix II, meaning that a trade in hunting trophies for non-commercial purposes is allowed, as is a trade in live animals to “appropriate and acceptable destinations.” However their ivory is considered to be in Appendix I and a global ban on legal trade remains in force.

    But a coalition of 29 other African countries is pressing for a tightening of the regulations proposing that all elephants on the Continent be listed in Appendix I.

    “The evidence for keeping these elephants on Appendix II is entirely lacking,” said Prof Phyllis Lee from the University of Stirling, who is a participant in the Kenyan Elephant Forum, which is pushing for greater protection.

    “They have suffered a decline, it is projected to continue and the ivory from those populations is present in the trade, all of those are significant grounds for up-listing to Appendix I under Cites regulations.”

    But Cites disagrees and is recommending that the proposals for up-listing be thrown out. They worry that if the resolution is passed, the extra restrictions could see some countries break away from the Convention and resume an unregulated trade.

    “There are 90 days for any country to enter a reservation against that decision, that listing to Appendix I,” Cites executive secretary John Scanlon, told BBC News.

    “If they enter a reservation, the Convention doesn’t apply to them for that particular species, and if other countries also enter a reservation they can trade with each other outside of the scope of the Convention. So there is a degree of risk associated with that.”

    Conservation groups are divided on the question. Many are in favour of the up-listing, saying the lack of clear data from some southern African states makes it uncertain that the populations of these countries are thriving,

    Others, such as WWF, agree with the Cites secretariat, saying that there is already a de-facto ban on ivory around the world and putting all the African elephants on the highest level of protection won’t provide any clear benefits and may actually make the situation worse.

    “Far from increasing the level of protection, up-listing opens up a loophole window where countries who want to trade can effectively opt out of the treaty as far as elephants are concerned,” said Dr Colman O’Criodain from WWF.

    “That would allow them to trade and it could spark off a trade in ivory that isn’t happening right now.

    “We also defend the principle of scientific criteria first and they are deemed not to be met in this case. Of course if there weren’t an existing ban on ivory trade, we might feel differently but there is. It’s not the most legally tidy, but it works.”

    There is a great deal of uncertainty as to how the elephant issue will play out – neither the proposal to liberalise the market or to increase protection is likely to achieve the two-thirds majority of delegates needed to change the Convention.

    There are worries that if the elephant question becomes so divisive, it may disrupt attempts to protect other, less glamorous species such as pangolins and the African Grey parrot.

    However, some observers believe that the convention might rally round another proposal to end domestic sales of ivory – something that occurs for antique ivory in many countries including China and the UK and the US.

    “There are a number of governments that have done it, there are a number that are doing it,” said Sue Lieberman, from the Wildlife Conservation Society.

    “It won’t be legally binding but it will push governments to do it, and that will make a massive difference, bigger than putting them on Appendix I.”

    Elephants in Botswana, which has more of the animals than any other country in Africa
  • Bizarre new species of extinct reptile shows dinosaurs copied body, skull shapes of distant relatives

    {Iconic dinosaur shapes were present for at least a hundred million years on our planet in animals before those dinosaurs themselves actually appeared.}

    In a study in today’s (Sept. 22) issue of Current Biology, a multi-institutional team of paleontologists including Virginia Tech College of Science researcher Michelle Stocker have identified and named a new species of extinct reptile estimated to be 230 million years old — predating dinosaurs.

    Called Triopticus primus — meaning the “First of Three Eyes” because the large natural pit in the top of its head lends the appearance of an “extra”eye — Triopticus bears an extremely thickened skull roof, just like the very distantly related pachycephalosaur dinosaurs that lived more than 100 million years later. And even more unexpected, many of the other extinct animals found with Triopticus resemble later dinosaurs as well.

    “Triopticus is an extraordinary example of evolutionary convergence between the relatives of dinosaurs and crocodylians and later dinosaurs that is much more common than anyone ever expected,” Stocker said. “What we thought were unique body shapes in many dinosaurs actually evolved millions of years before in the Triassic Period, about 225 million years ago.”

    Convergence — where distantly related animals evolve to look very similar to each other — is a widely-recognized phenomenon in evolutionary biology. A classic example of this is a bird wing and a bat wing — both animals use their wings for flight, but the inner details of those wings are different and evolved independently.

    Many of the other Triassic reptiles buried with Triopticus in the Otis Chalk fauna display structures that are easily recognized in later dinosaurs as well, such as the long snouts of Spinosaurus, the toothless beaks of ornithomimids, and the armor plates of ankylosaurs. Researchers said it is extremely rare to have so many diverse species in a single ancient community be converged upon over a broad swath of later geologic time.

    “The Otis Chalk fauna is an amazing single snapshot of geologic time where you have this extraordinary range of animal body plans all present at the same time living together,” Stocker said. “Among the animals preserved in the Otis Chalk fauna, Triopticus exemplifies this phenomenon of body-shape convergence because its skull shape was repeated by very distantly-related dome-headed dinosaurs more than 100 million years later.”

    Dinosaurs, like these distant cousins from the Triassic Period, are all reptiles. Reptiles rapidly evolved in terms of numbers of species soon after the greatest mass extinction of all time on Earth, at the end of the Permian Period.

    “After the enormous mass extinction 250 million years ago, reptiles exploded onto the scene and almost immediately diversified into many different sizes and shapes. These early body shapes were later mimicked by dinosaurs,” said Sterling Nesbitt, an assistant professor of paleontology at Virginia Tech and co-author of the study. The mimicry in body shape appears to evolve only after the extinction of the first group of reptiles.

    Researchers said an important component of the study involved the use of CT technology, more commonly associated with patients, not fossils.

    The specimen underwent a detailed CT scan at The University of Texas at Austin in order to reconstruct the brain anatomy, which had been rotted away millions of years ago when the animal was fossilized.

    “This project combines both old-school and high-tech approaches,” said co-author Lawrence Witmer of Ohio University’s Heritage College of Osteopathic Medicine. “Careful excavation and cleaning of the fossils showed the team that we had something special in Triopticus, but being able to peer inside the skull with X-ray CT scanning was a game-changer.”

    Not only is the external skull shape of Triopticus eerily reminiscent of the dome-headed dinosaurs, the internal parts of its head followed suit.

    “CT scanning showed us that the similarity of Triopticus with the much later dome-headed pachycephalosaur dinosaurs was more than skin deep, extending to the structure of the bone and even the brain.” Witmer said.

    “With a combination of CT scans and fossil comparisons we were able to give this old fossil new life,” said Katharine Criswell, a co-author and doctoral student at the University of Chicago.

    Complete details of what Triopticus primus looked like and how big it was are not yet known, though it was likely no bigger than an alligator. For now, researchers only have a fragment of skull. The remainder of the face and jaw, the vertebrae, and the rest of the skeleton is missing, either long lost to natural elements, waiting to be found in the field still, or inside a plaster jacket not yet opened at the lab at UT Austin.

    Though many fossils are uncovered during long stints of dusty fieldwork in far-off places, the team’s discovery of this specimen — originally collected near Big Spring, Texas, by the Works Progress Administration in 1940 — happened in the Texas Vertebrate Paleontology Collections in 2010, where it had been lying in plain sight for 70 years.

    It is not uncommon for new species to be found in fossil ‘libraries’ around the world. The Works Progress Administration, part of Franklin D. Roosevelt’s monumental effort to put Americans back to work at end the Great Depression, found so many fossils during its short span of work that they didn’t have time to clean all of them.

    “We can gain new insights into the history of life because specimens like Triopticus have been curated into museum collections like the one at UT Austin,” said Matthew Brown, co-author and director of the Texas Vertebrate Paleontology Collections at The University of Texas at Austin. “These collections are the foundation of natural history research, and this new animal illustrates how exciting discoveries are continually made thanks to the forethought and investment of past generations. It will be fascinating to see what the students of tomorrow find next.”

    The preserved remains of Triopticus (left) show the evolution of a thickened domed skull in the Triassic Period, 150 million years before the evolution of the famous dome-headed pachycephalosaur dinosaurs, such as Stegoceras (right). The background image shows the field site in Texas where Works Progress Administration crews in 1940 found the curious fossils of Triopticus.
  • Fish lose their unique personality when they go to ‘school’

    {Dr Christos Ioannou and his colleagues from the School of Biological Sciences tested three-spined sticklebacks (the UK’s smallest freshwater fish) alone and in groups of ten.}

    They found that just like in humans, braver individuals led the groups, and that the fish stuck together when making a risky decision.

    But they concluded that the conformity needed to make a group decision is stronger than braver fish leading, meaning overall, that the individual personalities of fish were lost when in a group.

    Dr Ioannou said: “This is the first time that the suppression of personality in groups has been linked to its underlying cause, which is conformity in group decision making.”

    The researchers also found that testing in a group did not have a lasting effect when individuals were retested alone; it was as if the group tests never happened.

    Dr Ioannou added: “The behaviour of the fish seems to be ‘plastic’ to the social situation — they show consistent individual differences in behaviour when tested alone — reflecting personality, but they are also happy to suppress this to be able to stick together with their shoal mates if there are others around.”

    The research, published in Science Advances, suggests that in social animals, when things get dangerous and animals form cohesive groups, risk-taking tendency when alone may not be a good indicator of the risk an individual actually faces.

    Funding for the research came from the Leverhulme Trust and the Natural Environment Research Council.

    Despite individual fish having their own personality, this gets suppressed when they make decisions together in a group.
  • What dinosaurs’ color patterns say about their habitat

    {After reconstructing the colour patterns of a well-preserved dinosaur from China, researchers from the University of Bristol have found that the long-lost species Psittacosaurus (meaning “parrot lizard,” a reference to its parrot-like beak) was light on its underside and darker on top.}

    This colour pattern, known as countershading, is a common form of camouflage in modern animals.

    The study published today in Current Biology led the researchers to conclude that Psittacosaurus most likely lived in an environment with diffuse light, such as in a forest, and has produced the most life-like reconstruction of a dinosaur ever created.

    Dr Jakob Vinther from the Schools of Earth Sciences and Biological Sciences, said: “The fossil, which is on public display at the Senckenberg Museum of Natural History in Germany, preserves clear countershading, which has been shown to function by counter-illuminating shadows on a body, thus making an animal appear optically flat to the eye of the beholder.”

    Behavioural ecologist Professor Innes Cuthill from the School of Biological Sciences, added: “By reconstructing a life-size 3D model, we were able to not only see how the patterns of shading changed over the body, but also that it matched the sort of camouflage which would work best in a forested environment.”

    Countershading most likely served to protect Psittacosaurus — an early relative of the triceratop — against predators that use patterns of shadow on an object to determine shape, just as humans do.

    Dr Vinther realised that structures previously thought to be artifacts or dead bacteria in fossilized feathers were actually “melanosomes,” small structures that carry melanin pigments found in the feathers and skin of many animals.

    In some well-preserved specimens, such as the Psittacosaurus the researchers worked on in the new study, it’s possible to make out the patterns of preserved melanin without the aid of a microscope.

    Professor Innes and colleagues at Bristol had also been exploring the distribution of countershading in modern animals. But it was no easy matter to apply the same principles to an extinct animal that had been crushed flat and fossilized.

    To explore this idea further they teamed up with local palaeoartist, Bob Nicholls in order to reconstruct the remarkable fossil in to a physical model which, they say, is the most scientifically accurate life-size model of a dinosaur with its real color patterns.

    Days of careful studies of the fossil, taking measurements of the bones, studying the preserved scales and the pigment patterns, with input on muscle structure from Bristol palaeontologists Professor Emily Rayfield and Dr Stephan Lautenschlager, led to months of careful modelling of the dinosaur.

    Bob Nicholls said: “Our Psittacosaurus was reconstructed from the inside-out. There are thousands of scales, all different shapes and sizes, and many of them are only partially pigmented. It was a painstaking process but we now have the best suggestion as to what this dinosaur really looked like.”

    In order to investigate what environment the psittacosaur had evolved to live in, Dr Vinther, Bob Nicholls and Professor Cuthill took another cast of the model and painted it all grey.

    They then placed it in the Cretaceous plant section of Bristol Botanic Garden and photographed it under an open sky and underneath trees to see how the shadow was cast under those conditions.

    By comparing the shadow to the pattern in the fossil they could then predict what environment the psittacosaur lived in.

    Dr Vinther said: “We predicted that the psittacosaur must have lived in a forest. This demonstrates that fossil colour patterns can provide not only a better picture of what extinct animals looked like, but they can also give new clues about extinct ecologies and habitats.

    “We were amazed to see how well these color patterns actually worked to camouflage this little dinosaur.”

    Psittacosaurus, which Professor Cuthill describes as “both weird and cute, with horns on either side of its head and long bristles on its tail” lived in the early Cretaceous of China and has been found in the same rock strata where many feathered dinosaurs have been found.

    Those deposits also include evidence for a forest environment based on plant and wood fossils.

    The researchers say that they’d now like to explore other types of camouflage in fossils and to use this evidence in understanding how predators could perceive the environment and to understand their role in shaping evolution and biodiversity.

    Psittacosaurus, early Cretaceous (120 million years old), preserving skin with colour patterns.