Zoology

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  • Mouse model would have predicted toxicity of drug that killed 5 in 1993 clinical trial

    Zoology News -- ScienceDaily
    15 Apr 2014 | 3:13 pm
    Over 20 years after the fatal fialuridine trial, a new study demonstrates that mice with humanized livers recapitulate the drug's toxicity. The work suggests that this mouse model should be added to the repertoire of tools used in preclinical screening of drugs for liver toxicity before they are given to human participants in clinical trials.
  • Wrong-Footing A One-Legged Mystery Snake From China

    Zoology News
    16 Apr 2014 | 7:59 am
    Some zoological photographs are so bizarre that long after they first hit the news headlines, they still continue to circulate online, like restless ghosts doomed to wander forever down the highways and byways of the worldwide web, resisting all attempts to expose them as hoaxes or explain them as grotesque yet nonetheless natural phenomena.
  • A historical approach to scorpion studies with special reference to the 20 th and 21st centuries

    MedWorm: Zoology
    15 Apr 2014 | 6:20 am
    This work provides historical context about scorpion studies from the end of the 19 th century to the present day. The content is mainly addressed to non-zoologists, working in research fields that embrace scorpion biology, notably to those working with venoms and toxins. The historical aspects described include academic professional scholars who worked on scorpion classification and general distribution patterns; and to a lesser extent, on studies of ecology and natural history. The aim is not to provide an exhaustive description of all scholars who in one way or another became involved with…
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    Zoology News -- ScienceDaily

  • Mouse model would have predicted toxicity of drug that killed 5 in 1993 clinical trial

    15 Apr 2014 | 3:13 pm
    Over 20 years after the fatal fialuridine trial, a new study demonstrates that mice with humanized livers recapitulate the drug's toxicity. The work suggests that this mouse model should be added to the repertoire of tools used in preclinical screening of drugs for liver toxicity before they are given to human participants in clinical trials.
  • Changes in processing, handling could reduce commercial fishing injuries

    15 Apr 2014 | 12:38 pm
    Handling frozen fish caused nearly half of all injuries aboard commercial freezer-trawlers and about a quarter of the injuries on freezer-longliner vessels operating off the coast of Alaska. Many injuries could be prevented with the right interventions. Researchers are hoping to build from this research and explore other fishing-related injuries and prevention strategies. The Dungeness crab industry is one area that may be explored and another is land-based fish-processing, researchers said.
  • Gut capacity limits bird's ability to adapt to rapid climate change

    15 Apr 2014 | 10:38 am
    An ornithologist has found that the capacity of a bird’s gut to change with environmental conditions is a primary limiting factor in their ability to adapt to the rapidly changing climate. And he believes that most other animals are also limited in a similar way.
  • Tiger beetle's chase highlights mechanical law

    15 Apr 2014 | 10:38 am
    If an insect drew a line as it chased its next meal, the resulting pattern would be a tangled mess. But there’s method to that mess: It turns out the tiger beetle, known for its speed and agility, does an optimal reorientation dance as it chases its prey at blinding speeds.
  • Sibling cooperation in earwig families provides clues to the early evolution of social behavior

    15 Apr 2014 | 8:22 am
    Looking at the question of how social behavior has developed over the course of evolution, scientists have gained new insights from the study of earwigs. "Young earwig offspring don't simply compete for food. Rather the siblings share what is available amongst themselves, especially when the mother is absent," explained one of the researchers.
 
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    Zoology News

  • Wrong-Footing A One-Legged Mystery Snake From China

    16 Apr 2014 | 7:59 am
    Some zoological photographs are so bizarre that long after they first hit the news headlines, they still continue to circulate online, like restless ghosts doomed to wander forever down the highways and byways of the worldwide web, resisting all attempts to expose them as hoaxes or explain them as grotesque yet nonetheless natural phenomena.
  • Lab Provides Tick Testing Service

    14 Apr 2014 | 9:38 am
    It's tick season again, and this year residents of 32 Massachusetts towns have a golden opportunity to receive free, expert identification of ticks and the disease-causing pathogens they carry, with testing provided by the Laboratory of Medical Zoology at the University of Massachusetts Amherst.
  • Did I See an Undescribed Species of Giant Praying Mantis in South Africa?

    8 Apr 2014 | 10:32 am
    The longest species of praying mantis currently known to science is the giant stick mantis Ischnomantis gigas .
  • Steinbeck Country: James Franco and Chris O'Dowd Share the Story...

    22 Mar 2014 | 10:35 pm
    John Steinbeck's Of Mice and Men is a classic so ingrained in the American psyche that it is perhaps no surprise that both the director and star of the new Broadway production of the 1937 play version of the novel have a longstanding personal relationship with the text.
  • Cleveland Museum of Natural History scientist identifies 19 new species of praying mantis

    18 Mar 2014 | 8:21 am
    Dr. Gavin Svenson, Cleveland Museum of Natural History's curator of invertebrate zoology, is publishing an article on 19 new species of praying mantis he has found and described, in the online, peer-reviewed open-access scientific journal, ZooKeys.
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    MedWorm: Zoology

  • A historical approach to scorpion studies with special reference to the 20 th and 21st centuries

    15 Apr 2014 | 6:20 am
    This work provides historical context about scorpion studies from the end of the 19 th century to the present day. The content is mainly addressed to non-zoologists, working in research fields that embrace scorpion biology, notably to those working with venoms and toxins. The historical aspects described include academic professional scholars who worked on scorpion classification and general distribution patterns; and to a lesser extent, on studies of ecology and natural history. The aim is not to provide an exhaustive description of all scholars who in one way or another became involved with…
  • Super-rats and cephalopods: the species that could conquer mankind | Dean Burnett

    15 Apr 2014 | 3:22 am
    The media has recently reported on the rise of super-rats. While many have tried to downplay the threat, the truth is that normal rats pose enough of a threat to humanity. And theyre not the only ones; there are plenty of seemingly-harmless species that could doom us all You watch any movie where human society is threatened with or undergoes collapse, and assuming its not self-inflicted or some natural calamity like asteroids (which are a real threat) or mutating neutrinos (which really arent), humans typically meet their doom at the hands of a more powerful life form. These are typically…
  • High concentrate: Forage ratio diet inhibiting omasal epithelium growth is associated with decreased cyclin D1 and CDK4 expression in growing goats

    14 Apr 2014 | 4:00 pm
    Abstract The hypothesis that different concentrate : forage ratio diets alter omasal epithelium proliferation of growing goats via cyclins and regulation of the cell cycle was tested. Growing goats were fed with a high concentrate (HC, n = 8) or a low concentrate (LC, n = 8) diet for 42 days. The concentrate : forage ratio was 40:60 in the HC group and 0:100 in the LC group. In the HC group, the relative weight and DNA content of the omasal epithelium were lower, but the protein : DNA ratio was higher. Flow cytometry revealed that HC omasal cell numbers were smaller in…
  • Pigeons’ tracking of relevant attributes in categorization learning.

    13 Apr 2014 | 4:00 pm
    We presented pigeons with a visual categorization task in which we monitored their choice accuracy through their responses to different report buttons; critically, we tracked the location of the pigeons’ pecks to both the relevant and irrelevant attributes of the training stimuli using touchscreen technology, in order to find out where the birds may have been attending during the course of categorization learning. Pigeons readily mastered the categorization task; most importantly, as training progressed, they increasingly concentrated their pecks on the relevant features of the category…
  • Rats respond for information: Metacognition in a rodent?

    13 Apr 2014 | 4:00 pm
    In 2 experiments, rats were trained to press a centrally located lever that delivered immediate food reinforcement and turned on a light signal that indicated the location of a further food reward. After rats learned to press the lever and use the light cue to find food, immediate reinforcement for lever pressing was discontinued. In Experiment 1, rats continued to press the lever for information about the location of reward in a T-maze, but control groups yoked to the experimental group for amount of reward, and conditioned reinforcement showed complete extinction of lever pressing. Rats…
 
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