SOMATIC CONDITION OF APHANIUS IBERUS (<i>VALENCIENNES</i>, 1846) IN MARCHAMALO WETLAND (<i>MAR MENOR</i>; SE SPAIN): EFFECTS OF MANAGEMENT

Authors

  • Ana Ruiz-Navarro
  • Francisco J. Oliva-Paterna
  • Mar Torralva
Keywords: cyprinodontid, life-history, growth, condition, endangered species

Abstract

Aphanius iberus is an endangered cyprinodontid of which scarce populations are distributed along the Mediterranean coast of the Iberian Peninsula. In the southeast of the peninsula, salt exploitation wetlands are a priority habitat for conservation of the species. The objective of this study was to check possible effects of extractive management in a salt exploitation (Marchamalo wetland, Mar Menor) on condition of the species during a two-year period (May 2000 – June 2002). 2612 individuals were captured in 28 monthly samplings and processed in situ (sex, total length: TL), and a sub-sampling of 997 individuals was processed in the laboratory to obtain eviscerated weight (EW). Temporal cycle of somatic condition was studied by standardized residuals from TLEW relationships. Hipersalinity episodes due to extractive management were detected and they appeared to be correlated with diminished somatic condition. In short, extractive management with no biological criteria produces deleterious effects on the condition of the species.

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Author Biographies

Ana Ruiz-Navarro

Departamento de Zoología Universidad de Murcia

Francisco J. Oliva-Paterna

Departamento de Zoología Universidad de Murcia

Mar Torralva

Departamento de Zoología Universidad de Murcia
How to Cite
Ruiz-Navarro, A., Oliva-Paterna, F. J., & Torralva, M. (2007). SOMATIC CONDITION OF APHANIUS IBERUS (<i>VALENCIENNES</i>, 1846) IN MARCHAMALO WETLAND (<i>MAR MENOR</i>; SE SPAIN): EFFECTS OF MANAGEMENT. Anales de Biología, (29), 53–59. Retrieved from https://revistas.um.es/analesbio/article/view/40761
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