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Sympatric occurrence of triploid, aneuploid and tetraploid weatherfish Misgurnus fossilis (Cypriniformes, Cobitidae)

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Abstract:

Ploidy analyses of 116 weatherfish Misgurnus fossilis individuals revealed the sympatric occurrence of triploid, intermediate aneuploid and tetraploid specimens in a 1:1:4 ratio. No diploids were detected and the sex ratio of triploids and tetraploids was 1:1, while that of aneuploids was skewed at 3:1 for males. An origin of intermediate aneuploids from mating triploids with tetraploids is hypothesized.

Keywords: flow cytometry; genome size; loach; sex ratio; variation in natural polyploidy

Document Type: Research Article

DOI: http://dx.doi.org/10.1111/j.1095-8649.2010.02794.x

Affiliations: Institute of Animal Physiology and Genetics, AS CR, v.v.i., Department of Vertebrate Evolutionary Biology and Genetics, Laboratory of Fish Genetics, 277 21 Liběchov, Czech Republic

Publication date: December 1, 2010

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