Conexión migratoria entre zonas de cría del Pacífico Este y áreas de alimentación en la Península Antártica basado en coincidencias de genotipos individuales

Autores/as

  • Susana Caballero Laboratorio de Ecología Molecular de Vertebrados Acuáticos, Departamento de Ciencias Biológicas, Universidad de los Andes, Bogotá, Colombia
  • Debbie Steel Marine Mammal Institute and Department of Fisheries and Wildlife, Oregon State University, 2030 SE Marine Science Drive, Newport, OR 97365, USA
  • Logan Pallin Department of Ecology and Evolutionary Biology, University of California Santa Cruz, Coastal Biology Building, 130 McAllister Way, Santa Cruz, CA 95060, USA
  • Natalia Botero-Acosta Fundación Macuaticos Colombia, Calle 27 No. 79-167, Medellin, Colombia
  • Fernando Felix Museo de Ballenas, Salinas, Ecuador/PO Box 09-06-2370, Guayaquil, Ecuador
  • Carlos Olavarría Centro de Estudios Avanzados en Zonas Aridas (CEAZA), Raúl Bitrán 1305, La Serena, Chile
  • Maria Claudia Diazgranados Programa Marino, Conservation International, Carrera 13 No. 71-41, Bogota, Colombia
  • Sandra Bessudo Fundación Malpelo y otros Ecosistemas Marinos, Carrera 11 No. 87-51, Bogota, Colombia
  • Ari Friedlander Department of Ecology and Evolutionary Biology, University of California Santa Cruz, Coastal Biology Building, 130 McAllister Way, Santa Cruz, CA 95060, USA
  • C. Scott Baker Marine Mammal Institute and Department of Fisheries and Wildlife, Oregon State University, 2030 SE Marine Science Drive, Newport, OR 97365, USA

DOI:

https://doi.org/10.25268/bimc.invemar.2021.50.SuplEsp.933

Palabras clave:

Megaptera novaeangliae, genotype matching, microsatellites, Southeastern Pacific, Antarctica

Resumen

Humpback whales (Megaptera novaeangliae) have a cosmopolitan distribution with populations in all three major ocean basins.  Six breeding stocks have been recognised by the IWC that feed around Antarctica and breed in the tropics.  The identity of each of these stocks has been defined based on their distribution in high latitude feeding grounds and breeding grounds in tropical sites.  Migratory connections between summer and winter grounds have been suggested for these stocks based on photo ID comparisons and genetic analyses.  We analysed 114 samples collected in different locations within the stock G breeding grounds, including Ecuador and the northern and southern Pacific of Colombia.  We genotyped 15 microsatellite loci, sexed all samples, and performed genotype comparisons. Genotype comparisons were done using a DNA register of previously genotyped individuals from the Colombian breeding ground and the Antarctic Peninsula feeding Area.  We found recaptures within each sampling location in the same year, but we also found a few recaptures in the same locations between years both in breeding and feeding grounds.  Interestingly, we found recaptures between breeding and feeding grounds using samples collected 20 years apart, providing some information about longevity in this stock.  Further comparisons with other data sets (Brazil, North Pacific) are needed to understand the migratory connectivity of this stock.

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Biografía del autor/a

Susana Caballero, Laboratorio de Ecología Molecular de Vertebrados Acuáticos, Departamento de Ciencias Biológicas, Universidad de los Andes, Bogotá, Colombia

Profesora Asociada, Departamento de Ciencias Biológicas, Universidad de los Andes.  

 

Especialista en Genética de la Conservación

Citas

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Publicado

2021-05-26

Cómo citar

1.
Caballero S, Steel D, Pallin L, Botero-Acosta N, Felix F, Olavarría C, Diazgranados MC, Bessudo S, Friedlander A, Baker CS. Conexión migratoria entre zonas de cría del Pacífico Este y áreas de alimentación en la Península Antártica basado en coincidencias de genotipos individuales. Bol. Investig. Mar. Costeras [Internet]. 26 de mayo de 2021 [citado 29 de marzo de 2024];50(SuplEsp):31-40. Disponible en: http://boletin.invemar.org.co:8085/ojs/index.php/boletin/article/view/933
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