墨西哥太平洋南部格雷罗州座头鲸越冬地的 mtDNA 变异

IF 2.6 2区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Endangered Species Research Pub Date : 2024-06-13 DOI:10.3354/esr01332
Luis Medrano-González, Katherina Audley, Charles Scott Baker, Debbie Steel
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引用次数: 0

摘要

摘要:在此,我们描述了墨西哥南部格雷罗海岸附近 22 头座头鲸个体的 mtDNA 单倍型变异,并利用已发表的数据将其与北太平洋东部其他越冬区域进行了比较。在对不同的样本大小进行校正后,格雷罗座头鲸符合北太平洋东部A型向北较多,而E型和F型向南较多的情况。初冬在格雷罗附近观察到的鲸鱼中,F 型鲸鱼的频率较高,而在大陆地区的班德拉斯湾(Bahía de Banderas),冬季较早的时候也能观察到这种鲸鱼,这表明鲸鱼从墨西哥到中美洲的季节性通道。在纳亚里特和格雷罗之间的不同越冬区域,四种多样性指数较高。在该地区的接壤越冬地观察到了偏离中性的现象。按距离计算的四项差异指标表明,纳亚里特与南哈利斯科州之间以及格雷罗州与瓦哈卡州之间存在界限,表明北纬 17.5 度至 19.5 度是墨西哥与中美洲越冬区之间的过渡区域。
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mtDNA variation of humpback whales in their wintering grounds of Guerrero, southern Mexican Pacific
ABSTRACT: Here, we describe variation in mtDNA haplotypes among 22 individual humpback whales off the Guerrero coast in southern Mexico and compare this to other wintering regions in the eastern North Pacific Ocean using published data. After correcting for different sample sizes, Guerrero humpback whales fit the cline in the eastern North Pacific in which A types are more abundant northwards, while E and F types are more abundant southwards. Whales observed around Guerrero in early winter exhibited a greater frequency of F types that are also observed earlier in winter at Bahía de Banderas in the mainland region, suggesting a seasonal passage of whales from Mexico to Central America. Four diversity indices were higher in different wintering regions between Nayarit and Guerrero. Departures from neutrality were observed in the bordering wintering grounds of the region. Four measures of differentiation by distance indicated boundaries between Nayarit and Southern Jalisco, and between Guerrero and Oaxaca, suggesting a transitional region between wintering regions of Mexico and Central America from 17.5° to 19.5°N.
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来源期刊
Endangered Species Research
Endangered Species Research BIODIVERSITY CONSERVATION-
CiteScore
5.50
自引率
6.50%
发文量
38
审稿时长
31 weeks
期刊介绍: ESR is international and interdisciplinary. It covers all endangered forms of life on Earth, the threats faced by species and their habitats and the necessary steps that must be undertaken to ensure their conservation. ESR publishes high quality contributions reporting research on all species (and habitats) of conservation concern, whether they be classified as Near Threatened or Threatened (Endangered or Vulnerable) by the International Union for the Conservation of Nature and Natural Resources (IUCN) or highlighted as part of national or regional conservation strategies. Submissions on all aspects of conservation science are welcome.
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