First mitochondrial DNA analysis of the spectacled porpoise (Phocoena dioptrica) from Tierra del Fuego, Argentina

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• 作者：Lida Elena Pimper ; Rae Natalie Prosser Goodall ; Mar¨ªa Isabel Remis
• 关键词：Phocoena dioptrica ; Spectacled porpoise ; mtDNA variation ; Tierra del Fuego ; Argentina
• 刊名：Mammalian Biology - Zeitschrift für Säugetierkunde
• 出版年：2012
• 出版时间：November, 2012
• 年：2012
• 卷：77
• 期：6
• 页码：459-462
• 全文大小：305 K

文摘

The spectacled porpoise (Phocoena dioptrica, ) is one of the cetacean species about which least is known. Most information on the biology and ecology of this species has been obtained from stranded specimens and sightings at sea. In this study, analysis of 380 bp fragment of mitochondrial DNA (mtDNA) control region sequences (N = 50) was performed to provide a preliminary assessment of the genetic variation in spectacled porpoise specimens found stranded or by caught on the coast of Tierra del Fuego, Argentina. Results showed high levels of mtDNA diversity, as expected in large size and stable populations, and similar to other species of porpoises. The star-like shape phylogeny of haplotypes indicates a recent population expansion. This is the first report on the genetic variation of this species. Other lines of evidence (microsatellite loci, single-nucleotide polymorphism (SNPs)) are needed to improve our knowledge on the molecular biology of the spectacled porpoise.