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In Flies' Innards, Vital Clues to Biodiversity - NYTimes.com - 0 views

green.blogs.nytimes.com/...hs-vital-clues-to-biodiversity biology microbiology genetics diversity evolution excellent science technology
shared by Erich Feldmeier on 08 Jan 13 - No Cached
  • Erich Feldmeier on 08 Jan 13
     
    "How many mammal species live in the forest? It sounds like a simple question, but the actual distributions of shy, small or rare mammals are often murky, confounding conservationists seeking to protect them. Yet a paper published online on Tuesday in the journal Molecular Ecology explores a new way to track biodiversity: by capturing flies that feed on carcasses. The flies' stomachs offer DNA diaries of their recent meals, giving scientists clues to which animals live and die in the forest. "The animals are there, but you just don't see them," said Fabian Leendertz, a wildlife epidemiologist at the Robert Koch Institute in Berlin and an author of the paper. "Those flies will find them and will tell us what is there"
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Sean D. Twiss und Ross Culloch Robben haben Persönlichkeit | Scienceticker - ... - 0 views

www.scienceticker.info/...robben-haben-personlichkeit excellent genetics evolution evolutionsmanagement biology personality
shared by Erich Feldmeier on 30 May 12 - No Cached
  • Erich Feldmeier on 30 May 12
     
    "Forschung: Sean D. Twiss und Ross Culloch, School of Biological and Biomedical Sciences, Durham University, und Patrick P. Pomeroy, Sea Mammal Research Unit, Gatty Marine Laboratory, University of St Andrews Veröffentlichung Marine Mammal Science, DOI 10.1111/j.1748-7692.2011.00523.x"
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Our brains are more like birds' than we thought - 0 views

www.sciencedaily.com/...100702152407.htm birds brains
shared by thinkahol * on 08 Jul 10 - Cached
  • thinkahol * on 08 Jul 10
     
    For more than a century, neuroscientists believed that the brains of humans and other mammals differed from the brains of other animals, such as birds (and so were presumably better). Researchers have now found that a comparable region in the brains of chickens concerned with analyzing auditory inputs is constructed similarly to that of mammals.
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New Carnivore Discovered, Rare With Teddy Bear Looks - 0 views

news.nationalgeographic.com/...es-rare-mammal-science-animals science biology
shared by Ivan Pavlov on 16 Aug 13 - No Cached
  • A fuzzy fog-dweller with a face like a teddy bear is the first carnivore found in the Western Hemisphere in more than three decades, a new study says.The 2-pound (0.9-kilogram) creature, called an olinguito, didn't make itself easy to find. The orange-brown mammal lives out a solitary existence in the dense, hard-to-study cloud forests of Colombia and Ecuador,
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Map of Life - 0 views

www.mappinglife.org biology maps species map biodiversity mappinglife mapping education research science
shared by Janos Haits on 01 Jul 12 - No Cached
  • Janos Haits on 01 Jul 12
     
    This demo allows you to map and produce list of species anywhere for ~ 25,000 species (including all described birds, mammals and amphibians - for info check the 'Dashboard').
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Encyclopedia of Puget Sound - 0 views

eopugetsound.org encyclopedia sound science research biology education
shared by Janos Haits on 22 Aug 12 - No Cached
  • Janos Haits on 22 Aug 12
     
    Puget Sound hosts more than 100 species of seabirds, 200 species of fish, 15 marine mammal species, hundreds of plant species, and thousands of invertebrate species. These species do not exist in isolation, but rather interact with each other in a variety of ways: they eat and are eaten by each other;
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Extinction of woolly mammoth, saber-toothed cat may have been caused by human predators - 0 views

www.sciencedaily.com/...100701072732.htm
shared by thinkahol * on 04 Jul 10 - Cached
  • thinkahol * on 04 Jul 10
     
    ScienceDaily (July 1, 2010) - A new analysis of the extinction of woolly mammoths and other large mammals more than 10,000 years ago suggests that they may have fallen victim to the same type of "trophic cascade" of ecosystem disruption that scientists say is being caused today by the global decline of predators such as wolves, cougars, and sharks.
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1 gene lost = 1 limb regained? Scientists demonstrate mammalian regeneration through si... - 1 views

www.physorg.com/news187879295.html PhysOrg.com medical health regeneration genetics
shared by Walid Damouny on 17 Mar 10 - Cached
  • Walid Damouny on 17 Mar 10
     
    "A quest that began over a decade ago with a chance observation has reached a milestone: the identification of a gene that may regulate regeneration in mammals. The absence of this single gene, called p21, confers a healing potential in mice long thought to have been lost through evolution and reserved for creatures like flatworms, sponges, and some species of salamander. In a report published today in the Proceedings of the National Academy of Sciences, researchers from The Wistar Institute demonstrate that mice that lack the p21 gene gain the ability to regenerate lost or damaged tissue."
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Dairy Farming For The Farmers Willing To Earn More - 0 views

mahendratrivediscience.tumblr.com/...e-farmers-willing-to-earn-more Dairy Farming increase milk supply Trivedi Effect Mahendra Trivedi
shared by anonymous on 20 Dec 14 - No Cached
  • anonymous on 20 Dec 14
     
    When dairy farming is involved, the farmers would tend to choose a particular kind of high milk producing species, which will allow them to attain more milk that what a regular mammal would.
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Does promiscuity prevent extinction? - 0 views

www.physorg.com/news186327580.html polyandry sex extinction science reason
shared by Skeptical Debunker on 25 Feb 10 - Cached
  • Known as 'polyandry' among scientists, the phenomenon of females having multiple mates is shared across most animal species, from insects to mammals. This study suggests that polyandry reduces the risk of populations becoming extinct because of all-female broods being born. This can sometimes occur as a result of a sex-ratio distortion (SR) chromosome, which results in all of the Y chromosome 'male' sperm being killed before fertilisation. The all-female offspring will carry the SR chromosome, which will be passed on to their sons in turn resulting in more all-female broods. Eventually there will be no males and the population will die out. For this study, the scientists worked with the fruitfly Drosophila pseudoobscura. They gave some populations the opportunity to mate naturally, meaning that the females had multiple partners. The others were restricted to having one mate each. They bred several generations of these populations, so they could see how each fared over time. Over fifteen generations, five of the twelve populations that had been monogamous became extinct as a result of males dying out. The SR chromosome was far less prevalent in the populations in which females had the opportunity to have multiple mates and none of these populations became extinct. The study shows how having multiple mates can suppress the spread of the SR chromosome, making all-female broods a rarity. This is because males that carry the SR chromosome produce only half as many sperm as normal males. When a female mates with multiple males, their sperm will compete to fertilise her eggs. The few sperm produced by males carrying the SR chromosome are out-competed by the sperm from normal males, and the SR chromosome cannot spread.
  • Skeptical Debunker on 25 Feb 10
     
    Promiscuous females may be the key to a species' survival, according to new research by the Universities of Exeter and Liverpool. Published today (25 February) in Current Biology, the study could solve the mystery of why females of most species have multiple mates, despite this being more risky for the individual.
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