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All posts with the tag "Scientific literature" are written by referring to the primary literature.
Monthly Archives: July 2011
Will male cottony cushion scales survive their own mating strategy?
A friend of mine just brought my attention to this article in the New York Times Science section today. An insect known as the cottony cushion scale (Icerya purchasi) exists in two sexes: hermaphrodites and males. Here’s the twist: the hermaphrodites are females infected with the parasitic tissue of a … Continue reading
Posted in Evolution of sex, Insect reproduction
Tagged kind of like incest, parasitism, scale insects, Scientific literature
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Save some of that sperm for later
In spiders, there are many species where the males only get one chance to pass on their genes. They stop making sperm as soon as they become adults, and after one sexual encounter, their sperm are all used up. In the great game of evolution, … Continue reading
Posted in Evolution of sex
Tagged evolution, male fertility, pedipalps, Scientific literature, sperm use strategies, spiders
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Correction–Frog sex!
In my last post I stated that because frogs(Xenopus laevis) have external fertilization, there would be no frog sex pictures. Well, I was wrong! These frogs do, in fact, “mate”, but not in the way you’re used to thinking about it. Instead of penetrating the … Continue reading
Egg jelly kicks sperm into gear in frogs
Sorry, but there won’t be any pictures of frogs having sex in this post. Why not? Because frogs (Xenopus laevis) are external fertilizers; the females lay their eggs in a pond, and then the males release sperm out into the open water. … Continue reading
Posted in Eggs and sperm
Tagged allurin, egg jelly, Scientific literature, sperm, Xenopus
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