» Published on
7. Juli 2021
The reproductive advantages of large male fish
Bielefeld University researchers publish systematic review and meta-analysis on mosquitofish
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 reproduc-tive advantages. Researchers from the transregional collaborative research cen-tre NC³ at Bielefeld University have shown in a systematic review and meta-analysis that larger mosquitofish are actually more successful at reproduction: they can, for instance, better challenge their rivals; they produce more sperm; and they are preferred by female fish. The re-searchers are presenting their findings today (07.07.2021) in the Journal of Animal Ecology.
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