Molecular identification of the first Galapagos fur seal (Arctocephalus galapagoensis) reported on the central coast of Oaxaca

IF 0.5 4区生物学 Q4 MARINE & FRESHWATER BIOLOGY Ciencias Marinas Pub Date : 2021-09-29 DOI:10.7773/cm.v47i3.3184

C. Tamayo-Millán, M. Ahumada-Sempoal, Adriana A. Cortés-Gómez, Ivon Marcela Chacón-Romo Leroux, Dennis Bermúdez-Díaz, V. Islas-Villanueva

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引用次数: 2

Abstract

Several sightings of different pinniped species have been recorded outside their typical areas of distribution. In May 2019, pinniped yearlings were sighted on 4 occasions on the central coast of Oaxaca, Mexico. One of them was found injured in La Escobilla (Oaxaca, Mexico) and was transported immediately to the Centro Mexicano de la Tortuga for rehabilitation. Visual identification of the species was inconclusive, as young individuals of several fur seal species can be very similar. A molecular analysis was thus performed to confirm the species. DNA was extracted from the individual, and a fragment of the mitochondrial DNA control region was sequenced and aligned with several sequences of other fur seal species. A parsimony analysis was performed, and the tree revealed that the individual was a Galapagos fur seal, Arctocephalus galapagoensis. This is the first record of this species on the central coast of Oaxaca. The atypical presence of this species in the country could be related to high sea surface temperatures associated with events such as El Niño.

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瓦哈卡中部海岸第一只加拉帕戈斯海豹(Arctocephalus galapagoensis)的分子鉴定

在典型的分布区域之外，已经记录了几次不同鳍足类物种的目击事件。2019年5月，墨西哥瓦哈卡州中部海岸4次发现一岁的鳍足类动物。其中一人在La Escobilla（墨西哥瓦哈卡州）被发现受伤，并立即被送往墨西哥托图加中心接受康复治疗。对该物种的视觉识别没有定论，因为几种毛皮海豹的年轻个体可能非常相似。因此进行了分子分析以确认该物种。从个体中提取DNA，并对线粒体DNA控制区的一个片段进行测序，并与其他毛皮海豹物种的几个序列比对。进行了简约分析，结果发现这棵树是加拉帕戈斯毛皮海豹，即加拉帕戈斯圆头海豹。这是该物种在瓦哈卡州中部海岸的首次记录。该物种在该国的非典型存在可能与厄尔尼诺等事件相关的高海面温度有关。

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来源期刊

Ciencias Marinas 生物-海洋与淡水生物学

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： A bilingual open-access publication, Ciencias Marinas (CM) is an international peer-reviewed journal that contains original research findings in all areas of marine science. It is published quarterly by the Autonomous University of Baja California, Mexico, and all its contents are publicly available on our journal website. Though a limited number of copies are still printed, the journal is mainly distributed in its electronic format. CM was conceived in 1973 as part of an academic project aimed to entice local researchers to publicly disclose their findings by adopting the culture of peer-review publishing. This academic project evolved into an international journal after accepting papers from researchers in the United States and, eventually, other parts of the world. Because of the diversity in authorship, CM issues were initially published in either Spanish or English, and occasionally in both languages. It was not until 1984 when CM included both language versions of all its contents, and it then became the fully bilingual journal it still is today. At CM we believe our inclusive format allows us not only to address a wider range of submissions from international authors but also to make published findings available to a wider international audience. So whether you are looking for information on the redfish in Icelandic waters or the physical and biological properties of the Gulf of California, feel free to peruse CM contents. You may find them to provide source material for your research.