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All posts with the tag "Scientific literature" are written by referring to the primary literature.
Category Archives: Sexual selection
Absence makes the genitalia grow weirder
Evolution loves penises. How else do you explain all the crazy penis shapes out there? Por ejemplo (slightly nsfw): the corkscrew duck penis, the spiny cat and chimp members, the sci-fi-esque spiked penis of a seed beetle, the 4-headed penis of … Continue reading
Update to duck penis science
Back in 2011, I posted a video about duck penis research. Sadly, that video is gone. But I replaced it with another showing how the duck penis can break through several types of materials in the shape of duck ladyparts. … Continue reading
Dynein proteins give fly sperm a competitive edge
Every species has some genes that never existed before in evolutionary history, but where do new genes come from? Many new genes are made by copy-and-paste: old genes get copied, rearranged and pasted together with parts of other genes, plus … Continue reading
Connecting the dots between anal fin “egg spots” and fights in male cichlids
Cichlid fish are an evolutionary biologist’s dream. There are thousands of species of cichlids, and more seem to crop up every day. Evolution never truly stands still in any species, but if you want to see it in action, cichlids … Continue reading
Posted in Sexual selection
Tagged anal fin spots, Cichlid fish, Female choice, male-male competition, Scientific literature
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My, what a big claw you have
Male fiddler crabs wave their giant claws to get the attention of females. Females prefer males that wave a lot, in line with a common theme in female choice: making the male work for it. Waving that big thing around … Continue reading
Posted in Sexual selection
Tagged Female choice, Fiddler crab, Male courtship, Scientific literature
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