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SECOND CLUTCH VIABILITY OF CHIONOECETES BAIRDI RATHBUN (DECAPODA: MAJIDAE) INSEMINATED ONLY AT THE MATURITY MOLT

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ABSTRACT The ability of female Chionoecetes bairdi, that copulated only one time following their maturity molt, to fertilize subsequent egg clutches was monitored. One group (N = 10) was held with males and the other (N = 11) without them until the extrusion of their second annual egg clutch. All 10 females with access to males produced second clutches with 95-100% of their eggs dividing. In the group of 11 isolated from males only 9% (N = 1) of the females produced clutches in which eggs initiated division. Females with access to males had more eggs in their clutches than the isolated females. A single insemination at the maturity molt typically did not provide sufficient stored sperm to fertilize subsequent egg clutches in C. bairdi. Apparently multiple inseminations are an important aspect of the reproductive biology of this species.

Affiliations: 1: Seward Marine Center, Institute of Marine Science, University of Alaska, P.O. Box 730, Seward, Alaska 99664, U.S.A.

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/content/journals/10.1163/1937240x92x00328
1992-01-01
2016-12-05

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