Abstract

BONILLA-GOMEZ, José Luis; TZEEK-TUZ, Juani; BADILLO, Maribel  and  CHIAPPA-CARRARA, Xavier. Growth and mortality of Sphoeroides testudineus (Tetraodontiformes: Tetraodontidae) in a tropical coastal lagoon in northwestern Yucatán Peninsula. Rev. Mex. Biodiv. [online]. 2012, vol.83, n.4, pp.1237-1240. ISSN 2007-8706.  https://doi.org/10.7550/rmb.28616.

This study reports growth parameters and mortality for Sphoeroides testudineus from La Carbonera, a karstic tropical coastal lagoon on the northwestern coast of the Yucatán Peninsula, Mexico. A total of 461 specimens were collected between April 2009 and March 2010. We obtained the length-weight relationship and the growth parameters of von Bertalanffy growth model (VBGM) by length frequency analysis. Additionally, mortality was estimated and analyzed. Exponent b indicated an isometric growth pattern. The growth parameters of VBGM were: L_∞ = 29.50 cm, k= 0.77 year^-1 and t₀= - 0.168 years. The instantaneous natural mortality was 1.53 year^-1.

Keywords : length-weight relationship; growth; Sphoeroides testudineus; coastal lagoon.

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