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Biological traits of the spot prawn Pandalus platyceros Brandt, 1851 (Decapoda, Caridea) at its southernmost distribution limit

In: Crustaceana
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  • 1 Centro Regional de Investigación Acuícola y Pesquera Mazatlán, Calzada Sábalo-Cerritos s/n, Contiguo Estero del Yugo, Mazatlán, Sinaloa 82112, Mexico
  • | 2 Facultad de Ciencias del Mar de la Universidad Autónoma de Sinaloa, Paseo Clausen s/n Col. Centro, Mazatlán, Sinaloa 82000, Mexico
  • | 3 Unidad Guaymas del Centro de Investigaciones Biológicas del Noroeste, Km 2.35 Camino al Tular, Estero de Bacochibampo, Guaymas, Sonora 85454, Mexico
  • | 4 Freelance Researcher in Oceanography, Estancia 344, Fraccionamiento Valle Bonito, Ensenada, Baja California 22852, Mexico
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Abstract

The spot prawn fishery, targeting Pandalus platyceros, has failed to prove commercially viable on the Mexican Pacific coast. A survey was carried out off the northwestern coast of Baja California, at depths of 140-180 m. The objective was to describe the biological traits of the species to test the hypothesis that warmer water stimulates higher growth parameters. An average model was estimated that anticipated an inverted exponential growth curve, consequently the growth parameters of the Von Bertalanffy model were obtained as k=0.421, L=47.44 mm carapace length (CL) and t0=0. Being a protandric hermaphrodite, the transition size was estimated at 40.8 mm CL. The results challenged the hypothesis that P. platyceros grows faster in temperate environments than in cold environments.

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