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Population Structure and Genetic Diversity of the Blue Shark Prionace Glauca in the Eastern Tropical Pacific: Evidence and Conservation Implications from Mitochondrial DNA and Microsatellite Analyses

Author

Listed:
  • Escovar-Fadul X
  • Caballero S

    (Laboratorio de Ecología Molecular de Vertebrados Acuáticos (LEMVA), Departamento de Ciencias Biológicas, Universidad de los Andes, Carrera 1 No 18A-10, Bogotá, Colombia)

  • Espinoza

    (Department of Marine Research, Puerto Ayora-Isla Santa Cruz, Galapagos National Park. Ecuador)

  • Bessudo S

    (Fundación Malpelo y otros Ecosistemas Marinos, Colombia)

Abstract

Sharks are top predator marine species with high ecological and economical value mainly due to their trophic status and high demand for fins. The blue shark, Prionace glauca, is one of the main targets of the shark fishing industry. The application of genetic markers is key to understand the population dynamics and management of elasmobranchii species under fishing pressure. In this study, levels of mitochondrial and nuclear genetic diversity of Eastern Tropical Pacific populations of the blue shark were investigated. Results from both markers show interesting differences. mtDNA analyses indicated no significant population differentiation between population units in the Eastern Tropical Pacific and the Western Pacific. Genetic differentiation detected in the microsatellite analyses, indicated more than one blue shark stock in the Eastern Tropical Pacific (FST=0,079, P

Suggested Citation

  • Escovar-Fadul X & Caballero S & Espinoza & Bessudo S, 2017. "Population Structure and Genetic Diversity of the Blue Shark Prionace Glauca in the Eastern Tropical Pacific: Evidence and Conservation Implications from Mitochondrial DNA and Microsatellite Analyses," Oceanography & Fisheries Open Access Journal, Juniper Publishers Inc., vol. 2(5), pages 97-104, May.
    • Handle: RePEc:adp:jofoaj:v:2:y:2017:i:5:p:97-104
    DOI: 10.19080/OFOAJ.2017.02.555598
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