All animals need sleep. When humans or animals don't get enough, it can lead to trouble paying attention, irritability, and other ill effects. And yet, researchers reporting in the journal Current Biology have made the surprising ...
Plants & Animals
Jan 25, 2024
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8
A new study has found the distribution of females in 33 species of Australian rodents affects the evolution of testes size of males in these social species.
Plants & Animals
May 4, 2022
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87
It turns out age is no barrier when it comes to reproducing—well, at least for one type of fish.
Plants & Animals
Jul 30, 2021
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7
Shark scientists at Georgia Aquarium, Scripps Institution of Oceanography at UC San Diego, and Dalhousie University are challenging the status quo in shark and ray mating research in a new study that looks at biological drivers ...
Ecology
Mar 4, 2021
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7
Males that face tougher competition for females risk having offspring with a greater number of harmful mutations in their genome than males without rivals. Researchers at Uppsala University have discovered this correlation ...
Plants & Animals
Mar 16, 2020
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228
New research led by The University of Western Australia has shown that the social conditions that a male experiences while growing up can influence the amount of X and Y chromosome sperm that he produces as an adult.
Evolution
Jul 1, 2019
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1
The presence of a rival male affects sperm quality, according to a research study led by the University of Alicante and the University of Upsala (Sweden). The work was carried out with adult zebrafish (Danio rerio) and reveals ...
Plants & Animals
Apr 12, 2019
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27
Think back to health class and picture a sperm. It's got a smooth rounded head, with a long skinny tail at the end, right? As it turns out, the sperm from different species of animals have different shapes—and, as a new ...
Plants & Animals
Dec 4, 2018
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46
In a study published in Behavioral Ecology researchers from Uppsala University show that the same type of sperm is not always the best for all male birds. Depending on how attractive or dominant you are you might be more ...
Plants & Animals
Aug 16, 2018
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6
We all know that individuals fight over potential love interests. Just think of Daniel Cleaver (Hugh Grant) and Mark Darcy (Colin Firth) scuffling – rather impotently – over Bridget Jones in a fountain. But you might ...
Plants & Animals
Feb 15, 2018
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39
