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Chromosomes of the Chocolate Gourami: A Cytogenetic Anomaly

1974; American Association for the Advancement of Science; Volume: 185; Issue: 4151 Linguagem: Inglês

10.1126/science.185.4151.618

1095-9203

Martha S. Calton, T. E. Denton,

Animal Genetics and Reproduction

The chocolate gourami, Sphaerichthys osphromonoides, has the lowest chromosome number reported for fishes, with 2n = 16 and n = 8. Other members of the family Belontiidae have somatic numbers of 42 to 48. Chromosome instability is demonstrated by the presence of somatic abnormalities and meiotic multivalents.