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Reproductive Biology of the Female Blue King Crab Paralithodes platypus near the Pribilof Islands, Alaska

David A. Somerton and Richard A. MacIntosh
Journal of Crustacean Biology
Vol. 5, No. 3 (Aug., 1985), pp. 365-376
Published by: on behalf of The Crustacean Society
DOI: 10.2307/1547908
Stable URL: http://www.jstor.org/stable/1547908
Page Count: 12
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Reproductive Biology of the Female Blue King Crab Paralithodes platypus near the Pribilof Islands, Alaska
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Abstract

Female blue king crabs, Paralithodes platypus, from the Pribilof Islands, were sampled during each of four 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 two indices of ovarian development (standardized ovary weight and mean oocyte diameter) we found the period between successive spawnings to be two years and the period of embryonic development to be 14-15 months. The fecundity of blue king crabs increases with size according to: E = 241,629-2,632,606 e-0.0280L, 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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