Karyology of the toadfish Porichthys plectrodon (jordan and Gilbert, 1882) (Batrachoididae) from Margarita Island, Venezuela
This paper reports the results of cytogenetic analyses carried out on Porichthys plectrodon using conventional Giemsa staining, C-banding and silver staining techniques. A diploid chromosome count of 2n=44 was observed, consisting of 8 metacentric, 10 submetacentric, 6 subtelocentric and 20 acrocent...
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| Veröffentlicht in: | Marine biology 2004-12, Vol.146 (1), p.161-165 |
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| creator | NIRCHIO, M FENOCCHIO, A. S SWARCA, A. C PEREZ, J. E |
| description | This paper reports the results of cytogenetic analyses carried out on Porichthys plectrodon using conventional Giemsa staining, C-banding and silver staining techniques. A diploid chromosome count of 2n=44 was observed, consisting of 8 metacentric, 10 submetacentric, 6 subtelocentric and 20 acrocentric chromosomes. Differences in length made it possible to identify homologous chromosomes within the metacentric group. Constitutive heterochromatin was distributed as large pericentromeric blocks in pairs 1 and 2, while the rest of the chromosomes were marked in centromeric regions, some more conspicuously than others. One pair of small-sized acrocentric NOR-bearing chromosomes (21) was identified by the nucleolar regions located terminally on their short arms. [PUBLICATION ABSTRACT] |
| doi_str_mv | 10.1007/s00227-004-1422-7 |
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| subjects | Animal and plant ecology Animal, plant and microbial ecology Biological and medical sciences Chromosomes Fish Fundamental and applied biological sciences. Psychology Genetics Karyology Marine Marine biology Porichthys plectrodon Sea water ecosystems Synecology |
| title | Karyology of the toadfish Porichthys plectrodon (jordan and Gilbert, 1882) (Batrachoididae) from Margarita Island, Venezuela |
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