Female fish genitalia evolve in response to predators, interbreeding
Female fish in the Bahamas have developed ways of showing males that "No means no."
Evolution
Aug 19, 2015
0
85
News tagged with male genitalia
How harmful male genitalia can impact reproduction in other species
Male Callosobruchus chinensis seed beetles have spines on their genitalia, which increase their fertilization success but injure a female's reproductive tract—especially a female of a related species called Callosobruchus ...
Evolution
May 19, 2015
0
101
Mosquitofish genitalia change rapidly due to human impacts
The road that connects also divides. This dichotomy – half-century-old roads connecting portions of Bahamian islands while fragmenting the tidal waters below – leads to rapid and interesting changes in the fish living ...
Evolution
Nov 5, 2014
0
0
Outdated assumptions make evolutionary researchers ignore female genitalia
(Phys.org) —Animal genitalia are structurally diverse organs that can evolve rapidly under powerful selective forces exerted by the peculiarities of sexual reproduction. An overarching review of the existing evolutionary ...
Evolution
May 7, 2014
1
1
Research duo report first observation of cross species mimicry to ward off reproductive efforts
(Phys.org) —Biology researchers Nikolai Tatarnic and Gerasimos Cassis of the University of New South Wales and Macquarie University in Sydney, report in a paper they've had published in the journal The American Naturalist, ...
Why guppies have genital claws
New research from evolutionary biologists at the University of Toronto shows that the male guppy grows claws on its genitals to make it more difficult for unreceptive females to get away during mating.
Plants & Animals
Aug 2, 2013
1
0
Guppies and sexual conflict? It's a genital arms race
(Phys.org) —It's not always easy to tell if a fish is male or female: they look more or less the same. But there are exceptions, such as guppies and, as with humans, guppy genitalia varies in size across the species.
Plants & Animals
Jun 3, 2013
0
0
Jurassic insect that mimicked ginkgo leaves discovered
(Phys.org)—Researchers working in China have discovered an insect that lived 165 million years ago that they believe used its wings to mimic the leaves of an ancient ginkgo tree. The fossil finding, the team writes in their ...
Male competition over females: An evolutionary engine of genital evolution
When a female mates with several males, these will compete over the fertilization her eggs. This is an important evolutionary force that has led to the evolution of a diversity of male sexual organ morphologies. This is revealed ...
Plants & Animals
Oct 25, 2012
0
0
Velvet spiders emerge from underground in new cybertaxonomic monograph
Velvet spiders include some of the most beautiful arachnids in Europe and some of the world's most cooperative species. Social species can be very abundant in parts of tropical Africa and Asia with conspicuous colonies dotting ...
Plants & Animals
May 23, 2012
0
0
