Karyotype of the yellow-bellied sea snake, Pelamis platurus
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| Autoři: | , |
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| Médium: | artículo original |
| Datum vydání: | 1980 |
| Popis: | In this paper we describe the karyotype of the yellow-bellied sea snake, Pelamis platurus from Costa Rica. The diploid number is 38 chromosomes, with 20 macrochromosomes and 18 microchromosomes. The pairs 1 and 2 are metacentrics, pair 3 is subtelocentric and pairs from 4 to 9 have the centromere in a terminal position. Females have a pair of slightly heteromorphic chromosomes identified as sex chromosomes Z and W; both are metacentrics but have different centromeric index and W is slightly smaller.The pattern of heteromorphism in sex chromosomes and the secondary constriction present in some sea snake karyotypes could be useful parameters in determining evolutionary relationships between the sea snakes. |
| Země: | Kérwá |
| Instituce: | Universidad de Costa Rica |
| Repositorio: | Kérwá |
| OAI Identifier: | oai:kerwa.ucr.ac.cr:10669/29113 |
| On-line přístup: | https://hdl.handle.net/10669/29113 |
| Klíčové slovo: | Yellow-Bellied Sea Snake Vertebrates Costa Rica Area de Conservación Tempisque Chromosome Number |