Cytogenetic characterization of Hypostomus soniae Hollanda-Carvalho & Weber, 2004 from the Teles Pires River, southern Amazon basin: evidence of an early stage of an XX/XY sex chromosome system
In the present study, we analyzed individuals of Hypostomus soniae (Loricariidae) collected from the Teles Pires River, southern Amazon basin, Brazil. Hypostomus soniae has a diploid chromosome number of 2n = 64 and a karyotype composed of 12 metacentric (m), 22 submetacentric (sm), 14 subtelocentric (st), and 16 acrocentric (a) chromosomes, with a structural difference between the chromosomes of the two sexes: the presence of a block of heterochromatin in sm pair No. 26, which appears to represent a putative initial stage of the differentiation of an XX/XY sex chromosome system. This chromoso... Mehr ...
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Dokumenttyp: | Research article |
Erscheinungsdatum: | 2019 |
Verlag/Hrsg.: |
Pensoft Publishers
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Schlagwörter: | Fish cytotaxonomy / chromosome banding / rDNA FISH / chromosome polymorphism / Loricariidae |
Sprache: | Englisch |
Permalink: | https://search.fid-benelux.de/Record/base-26716905 |
Datenquelle: | BASE; Originalkatalog |
Powered By: | BASE |
Link(s) : | https://doi.org/10.3897/CompCytogen.v13i4.36205 |