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Polimorfismo cromosómico intraespecífico en la serpiente de coral Micrurus nigrocinctus (Ophidia: Elapidae)

1981; Vicerractoría Investigación; Volume: 29; Issue: 1 Linguagem: Inglês

10.15517/rbt.v29i1.25522

2215-2075

José María Guitérrez, Róger Bolaños,

Genomics and Phylogenetic Studies

Two principal karyological patterns were observed in 59 coral snakes ( Micrurus ) from Costa Rica: I, nigrocinctus (2n = 26) and II ' (2n =30), which correspond to the subspecies M. n. and M. n. mosquitensis , respectively. These chromosomal patterns differ in the number of microchromosomes and in the position of the centromere in the eighth pair of macrochromosomes. In the M. n. group we found three specimens with an additional microchromosome (2n =27) and one with two more (2n = 28). Among the M. n. mosquitensis we saw two individuals with a variation in the position of the centromere in the W chromosome. This study confirm s the intraspecific chromosomal polimorphism characteristic of this species.