Spatial and temporal variation of the population density of the red sea urchin Strongylocentrotus franciscanus (Echinodermata: Echinoidea: Strongylocentrotidae) in Baja California

Authors

  • Julio S. Palleiro-Nayar Instituto Nacional de Pesca. Centro Regional de Investigación Pesquera en Ensenada. AP 187, El Sauzal de Rodríguez, Baja California. 22760. México
  • Gabriela Montaño-Moctezuma Instituto de Investigaciones Oceanológicas, Universidad Autónoma de Baja California. AP 423, Ensenada, Baja California. 22800. México
  • Óscar Sosa-Nishizaki Centro de Investigación Científica y de Educación Superior de Ensenada. AP 360, Ensenada, Baja California. 22860. México

Keywords:

Density, size structure, Strongylocentrotus franciscanus, red sea urchin.

Abstract

Density estimations of red sea urchin Strongylocentrotus franciscanus were recorded in ten sites with commercial fisheries on the west coast of Baja California, Mexico. The estimations for the years 2003, 2005, 2006 and 2008 were compared. The variations observed in the study sites indicate important spatial and temporal differences in density and size structure, influenced by fishing intensity and sporadic recruitment in each site. We found two sites (San Jeronimo Island and Sacramento Reef) with a high density and wide size structure; with a predominance of individuals of sizes from 50 to 80 mm with lest impact possible in fishing mortality for all sites.

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Published

2017-01-05

How to Cite

Palleiro-Nayar, J. S., Montaño-Moctezuma, G., & Sosa-Nishizaki, Óscar. (2017). Spatial and temporal variation of the population density of the red sea urchin Strongylocentrotus franciscanus (Echinodermata: Echinoidea: Strongylocentrotidae) in Baja California. HIDROBIOLÓGICA, 22(1), 28–34. Retrieved from https://hidrobiologica.izt.uam.mx/hidrobiologica/index.php/revHidro/article/view/677

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