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The cost of keeping eggs fresh for mother cockroaches

02-26-2007 · EurekAlert!

Tiny multiple sperm can be long lived, while large "expensive" eggs degenerate quickly if they are not fertilized. This conundrum -- there should be selection for females to keep their eggs fresh until they are used -- has recently been studied in a cockroach where some choosy females have genes that allow them to maintain eggs while looking for the best mate. Perhaps, however, these genes are limited because they are harmful in some environments.

Keywords: cost, keeping, eggs, fresh, mother, cockroaches, egg, cockroache

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