Growth of American oysters increased by polyploidy induced by blocking meiosis I but not meiosis II |
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| Authors: | Jon G Stanley Herbert Hidu Standish K Allen |
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| Institution: | 2. Migratory Fish Research Institute, University of Maine at Orono, Orono, ME 04469 U.S.A.;3. Department of Zoology, Ira C. Darling Center, University of Maine at Orono, Walpole, ME 04573 U.S.A. |
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| Abstract: | Triploidy in American oysters (Crassostrea virginica) was induced by blocking polar body formation with cytochalasin B. Triploid oysters created by treatment during meiosis I grew faster during the first 3 years of life than did diploid siblings. Triploid oysters created during meiosis II grew at the same rate as their controls. Because heterozygosity was higher in oysters created during meiosis I than in other groups, the increased growth must be due to heterozygosity rather than to triploidy per se. |
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