Revista de Biología Tropical ISSN Impreso: 0034-7744 ISSN electrónico: 2215-2075

OAI: https://revistas.ucr.ac.cr/index.php/rbt/oai
Shell length at sexual maturity and spawning cycle of <i>Mytella guyanensis</i> (Bivalvia: Mytilidae) from Costa Rica
Vol. 41 No. 1 (1993), Articles
Vol. 41 No. 1 (1993)

Shell length at sexual maturity and spawning cycle of <i>Mytella guyanensis</i> (Bivalvia: Mytilidae) from Costa Rica

Articles
Published April 1, 1993
Rafael A Cruz
Escuela de Ciencias Biológicas, Laboratorio de Manglares y Ecología Estuarina. Universidad Nacional
Carlos R Villalobos
Escuela de Biología y Centro de Investigación en Ciencias del Mar y Limnología. Universidad de Costa Rica
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Cruz, R. A., & Villalobos, C. R. (1993). Shell length at sexual maturity and spawning cycle of &lt;i&gt;Mytella guyanensis&lt;/i&gt; (Bivalvia: Mytilidae) from Costa Rica. Revista De Biología Tropical, 41(1), 89–92. Retrieved from https://revistas.ucr.ac.cr/index.php/rbt/article/view/23311
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Abstract

A population of Mytella guyanensis from Costa Rica was studied for 12 months in order to determine shell length at sexual maturity, frecuency and duration of the spawning cycle under natural conditions. The smallest mature individual was 18 mm long. The mussels spawned from September through November and from February through April. Sexes were distinguishable in all individuals with a shell length greater than 30 mm. No evidence of protandry or hermaphroditism was observed. Sex ratios of M. guyanensis did not differ significantly of 1: 1.
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Copyright (c) 1993 Revista de Biología Tropical

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