In the order Diptera, more-primitive species such as mosquitos generally do their deed in the end-to-end position. Higher (more evolved) species such as flies tend toward the male mounting the female from behind (male-above ...
Plants & Animals
Feb 27, 2019
1
202
Researchers from Tokyo Metropolitan University have shown that the environment-driven evolution of a unique ovipositor in the female fruit fly Drosophila suzukii may have caused coevolution of the male genitalia; new features ...
Plants & Animals
Nov 12, 2018
0
31
Males and females mate to produce offspring, but their relationships are not always cooperative. The conflict between the sexes when they behave selfishly can be negative for the whole group. A group of Japanese researchers ...
Plants & Animals
Oct 5, 2018
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2
One of Australia's iconic lizard species is hiding a secret - female central bearded dragon embryos temporarily grow the lizard equivalent of a penis during development.
Evolution
Dec 5, 2017
0
9
Female fish in the Bahamas have developed ways of showing males that "No means no."
Evolution
Aug 19, 2015
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85
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
When it comes to genitalia, nature enjoys variety. Snakes and lizards have two. Birds and people have one. And while the former group's paired structures are located somewhat at the level of the limbs, ours, and the birds', ...
Evolution
Nov 5, 2014
2
0
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
(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
Researchers from Macquarie University and the University of New South Wales have discovered a strange mechanism whereby two species of traumatically inseminating plant bug are able to live together in Tahiti, as published ...
Plants & Animals
Sep 5, 2013
0
0
