Only males among the fish species crucian carp have developed a strategy to protect themselves from hungry predators, according to a new study from Lund University in Sweden published in the journal Evolution. The explanation ...
Plants & Animals
Jan 24, 2023
0
2
It's easy to assume all animals have a neat dividing line between the sexes because the differences in appearance between males and females can be so striking. But the more scientists learn about wildlife, the clearer it ...
Plants & Animals
Sep 28, 2022
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3
A team of researchers at Charles Darwin University, in Australia, has found that male fish that mouth-brood are not always guaranteeing that the eggs they carry were fertilized by them. In their paper published in the journal ...
Researchers—led by the University of York's BioArCh team—developed a new approach to analyze amino acids, the building blocks of proteins, from 17 adult skeletons found in the aftermath of the eruption of Vesuvius in ...
Archaeology
Aug 25, 2021
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1115
In mosquitofish, of the genus Gambusia, male fish are smaller than females—sometimes only half the size. Biologists had previously assumed that smaller male mosquitofish had at least some reproductive advantages. Researchers ...
Ecology
Jul 7, 2021
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4
If you were given the option to eat a delicious meal by yourself, or share that meal with your loved ones, you would need a very good excuse ready if you chose the former. Turns out, fish share a similar inclination to look ...
Plants & Animals
Mar 19, 2021
0
1011
Research from the University of Adelaide has found that some species of fish will have higher reproductive capacity because of larger sex organs, under the more acidic oceans of the future.
Ecology
Dec 30, 2020
9
375
A research collaboration based at Kumamoto University (Japan) has found that activation of PPARα, a fatty acid receptor that detects fatty acids in cells and regulates physiological functions, causes masculinization of Japanese ...
Plants & Animals
Sep 4, 2020
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8
For Atlantic salmon, size matters when it comes to love. Larger males and females that may spend up to four years at sea produce many more babies, but they are very rare compared to younger fish.
Plants & Animals
Jun 23, 2020
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4
Samuel Hulse, a Ph.D. candidate at UMBC, spent a lot of time in waders over the last two years. He traipsed from stream to stream across the eastern U.S., carefully collecting live specimens of small, colorful freshwater ...
Evolution
May 22, 2020
0
13
