ウシエビの精莢移植と人工授精〔英文〕

概要

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The present paper describes spermatophare transplantation and artificial fertilization in wild or pond-reared female grass shrimp whose golladal development was induced by the method of eyestalk ablation. The hatching rates from the uncopulated soft-thelycum females implanted with two spermatophores were 82.35% and 39.11% for the first and the subsequent spawnings, respectively, while from those implanted with only one spermatophare, the hatching rates of 71.87% and 13.17% were similarly obtained. In addition to spawning success with an improved hatching, the spermatophore transplantation will allow repeated use of the ablated females, bene-fitting the hatchery operation. To the uncopulated hard-thelycum females, artificial fertilization was found applicable by release of spermatozoa into the spawning tank right before the spawning took place. The timely release of spermatozoa for 3 individuals resulted in the hatching rates of 63.11, 52.29 and 49.44%.
日本水産學會の論文