Genetic diversity of the Neotropical otter (Lontra longicaudis Olfers, 1818) in Southern and Southeastern Brazil

Brazilian Journal of Biology

Cs. Trinca²  Hf. Waldemarin¹  E. Eizirik¹ 

[1] ,Universidade Federal do Rio Grande do Sul Departamento de Genética Porto Alegre RS ,Brazil

关键词: Lontra longicaudis;    mitochondrial DNA;    control region;    genetic diversity;    Lontra longicaudis;    DNA mitocondrial;    região controladora;    diversidade genética;   

DOI  :  10.1590/S1519-69842007000500003

来源: SciELO

【 摘 要 】

The Neotropical otter is one of the least known otter species, and it is considered to be threatened to various degrees throughout its geographic range. Little information exists on the ecological characteristics of this species, and no genetic study has been published about it until now, hampering the design of adequate conservation strategies for its populations. To contribute with genetic information to comprehensive conservation efforts on behalf of L. longicaudis, we characterized the molecular diversity of the 5’ portion of the mtDNA control region in samples from this species collected in Southern and Southeastern Brazil. The sequence analysis revealed a high level of haplotype diversity (h = 0.819; SE = 0.0052) and nucleotide variability ranging from 0.0039 to 0.0067. One of the sampled haplotypes was the most common in both regions and, from this sequence, several other (locally occurring) haplotypes could be derived by single point mutations. No significant genetic differentiation was observed between the Southern and Southeastern regions.

【 授权许可】

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