Steller Sea Lions (Eumetopias jubatus) Along the Western Coast of Mexico

Gallo‐Reynoso, Juan Pablo; Figueroa-Carranza, Ana L.; Barba‐Acuña, Isai David; Borjes-Flores, Donaxi; Pérez-Cossío, Itzel J.

doi:10.1578/am.46.4.2020.411

Cited by 3 publications

(4 citation statements)

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“…Molecular tools can prevent misidentification of sightings, especially during pinniped early growth stages. DNA analysis has been used in some cases (Aurioles-Gamboa et al 2004); however, it has not become a standardized tool for species identification during rare sightings and strandings (Ceballos et al 2010, Gallo-Reynoso et al 2020, which could be due to the cost and time to process the sample.…”

Section: Discussionmentioning

confidence: 99%

“…Las herramientas moleculares pueden prevenir la identificación errónea de los avistamientos, especialmente durante las etapas tempranas de crecimiento de los pinnípedos. El análisis de ADN ha sido empleado en algunos casos (Aurioles-Gamboa et al 2004); sin embargo, no se ha convertido en una herramienta estandarizada en la identificación de especies durante avistamientos extraordinarios y varamientos (Ceballos et al 2010, Gallo-Reynoso et al 2020, lo cual puede ser atribuido al costo y al tiempo para procesar la muestra.…”

Section: Discussionunclassified

“…Despite geographical restrictions, several sightings of different pinniped species have been recorded outside their typical areas of distribution, even at distances greater than hundreds or thousands of kilometers. Some atypical records in Mexico include Arctocephalus australis (Zimmerman 1783) in Oaxaca (Villegas-Zurita et al 2016), Eumetopias jubatus (Schreber 1776) in Colima (Ceballos et al 2010, Gallo-Reynoso et al 2020, Zalophus wollebaeki (Sivertsen 1953) in Chiapas, and Arctocephalus galapagoensis (Heller 1904) in Guerrero, Chiapas, andMichoacán (Aurioles-Gamboa et al 2004, Páez-Rosas et al 2017).…”

Section: Introductionmentioning

confidence: 99%

“…A pesar de las restricciones geográficas, diversos avistamientos de diferentes especies de pinnípedos han sido registrados fuera de sus áreas usuales de distribución, incluso a distancias superiores a cientos o miles de kilómetros. Algunos de estos registros atípicos en México incluyen Arctocephalus australis (Zimmerman 1783) en Oaxaca (Villegas-Zurita et al 2016), Eumetopias jubatus (Schreber 1776) en Colima (Ceballos et al 2010, Gallo-Reynoso et al 2020, Zalophus wollebaeki (Sivertsen 1953) en Chiapas y Arctocephalus galapagoensis (Heller 1904) en Guerrero, Chiapas y Michoacán (Aurioles- Gamboa et al 2004, Páez-Rosas et al 2017.…”

Section: Introductionunclassified

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

Tamayo-Millán¹,

Ahumada-Sempoal²,

Cortés-Gómez³

et al. 2021

Cienc. Mar.

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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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Section: Discussionmentioning

confidence: 99%