Reproductive Biology of the Female Blue King Crab Paralithodes Platypus Near the Pribilof Islands, Alaska

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Abstract
Female blue king crabs, P. platypus, from the Pribilof Islands, were sampled during each of 4 seasons to determine whether they spawn each year, as do red king crabs, P. camtschatica, or every other year, as reported for Asian blue king crabs. Based on seasonal changes in 2 indices of variation development (standardized ovary weight and mean oocyte diameter) the period between successive spawnings is 2 yr and the period of embryonic development to be 14-15 mo. The fecundity of blue king crabs increases with size according to: E = 241,629-2,632,606 e-0.028OL, where E is fecundity and L is carapace length in mm. Mean length and width of new external eggs are 1.2 mm and 1.0 mm.

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