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Article ID: 706739

Understanding our early human ancestors: Australopithecus sediba

Dartmouth College

The fossil site of Malapa in the Cradle of Humankind, South Africa, discovered by Lee Berger of the University of the Witwatersrand, Johannesburg, in August 2008, has been one of the most productive sites of the 21st century for fossils of early human ancestors or hominins. A new hominin species, Australopithecus sediba (Au. sediba), was named by Berger and his colleagues, following the discovery of two partial skeletons just under two million years old, a juvenile male individual-- Malapa Hominin 1 (MH1)-- and an adult female, Malapa Hominin 2 (MH2). The skeletons are under the custodianship of the University of the Witwatersrand, where they are being kept.

Released:
18-Jan-2019 11:40 AM EST

Article ID: 706653

Fruit fly promiscuity alters the evolutionary forces on males

University of Oxford

Results, published in Nature Communications, have shown that the nature of the evolutionary forces which act on male fruit flies depend on how many mates a females has.

Released:
17-Jan-2019 11:50 AM EST
  • Embargo expired:
    16-Jan-2019 2:00 PM EST

Article ID: 706304

Many endangered marine mammals and sea turtles are recovering after Endangered Species Act protection

PLOS

More than three-quarters of marine mammal and sea turtle populations have significantly increased after listing of the U.S. Endangered Species Act (ESA), according to a study published January 16 in the open-access journal PLOS ONE by Abel Valdivia of the Center for Biological Diversity in California, and colleagues. The findings suggest that conservation measures such as tailored species management and fishery regulations, in addition to other national and international measures, appear to have been largely successful in promoting species recovery, leading to the delisting of some species and to increases in most populations.

Released:
10-Jan-2019 11:50 AM EST
Embargo will expire:
22-Jan-2019 2:00 PM EST
Released to reporters:
15-Jan-2019 10:05 AM EST

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Article ID: 706438

Wild insects 'get old' before they die

University of Exeter

Short-lived wild insects "get old" - losing some of their physical abilities - before they die, new research shows.

Released:
14-Jan-2019 1:50 PM EST
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Article ID: 706213

Change of teeth causes yo-yo effect in elephants' weight

University of Zurich

The teeth of most mammals, including humans, are only replaced once in a lifetime, when the milk teeth give way to the permanent teeth. This one change is enough to adapt to the increasing size of the jaw. But elephants increase greatly in size and weight over the course of their lives - from a starting weight of 100 kilograms to several tons in adulthood. One single change of teeth would not be enough for the enormous growth of the jaw.

Released:
9-Jan-2019 1:00 PM EST
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Article ID: 706151

Variable venom -- why are some snakes deadlier than others?

Trinity College Dublin

An international collaboration led by scientists from the National University of Ireland, Galway, The University of St Andrews, Trinity College Dublin and the Zoological Society of London has uncovered why the venom of some snakes makes them so much deadlier than others.

Released:
8-Jan-2019 1:35 PM EST
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Article ID: 706144

How locusts switch colors in different settings

eLife

Scientists have discovered how locusts change their body colour to adapt to different environments, according to new research published in eLife.

Released:
8-Jan-2019 12:55 PM EST

Article ID: 705970

Researchers locate the body's largest cell receptor

Aarhus University

"What we're looking at is evolution at a structural level. A receptor with a toadstool structure that stems from way back and the common ancestors of insects and humans..."

Released:
3-Jan-2019 12:10 PM EST
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  • Embargo expired:
    22-Dec-2018 1:00 AM EST

Article ID: 705708

U-M Howler Monkey Study Examines Mechanisms of New Species Formation

University of Michigan

A new University of Michigan study of interbreeding between two species of howler monkeys in Mexico is yielding insights into the forces that drive the evolution of new species.

Released:
19-Dec-2018 3:25 PM EST

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