Logo Kérwá
 

Karyotype of the yellow-bellied sea snake, Pelamis platurus

Loading...
Thumbnail Image

Date

Authors

Gutiérrez, José María
Bolaños Herrera, Róger

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

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.

Description

Keywords

Yellow-Bellied Sea Snake, Vertebrates, Costa Rica, Area de Conservación Tempisque, Chromosome Number

Citation

Collections

Endorsement

Review

Supplemented By

Referenced By