Dinámica poblacional y reproductiva de Turbinella angulata y Busycon perversum (Mesogasteropoda: Turbinellidae y Melongenidae) en el Banco de Campeche, México
| Autor: | Santos Valencia, Josefina, Enríquez Díaz, Martha, Aldana Aranda, Dalila |
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| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Revista de Biología Tropical, Vol 61, Iss 1, Pp 15-28 (2013) Instituto Politécnico Nacional IPN Redalyc-IPN Revista de Biología Tropical (Costa Rica) Num.1 Vol.61 Revista de Biología Tropical; Vol. 61 No. 1 (2013): Volume 61 – Regular number 1 – March 2013; 15–28 Revista de Biología Tropical; Vol. 61 Núm. 1 (2013): Volumen 61 – Número regular 1 – Marzo 2013; 15–28 Revista Biología Tropical; Vol. 61 N.º 1 (2013): Volumen 61 – Número regular 1 – Marzo 2013; 15–28 Portal de Revistas UCR Universidad de Costa Rica instacron:UCR |
| ISSN: | 0034-7744 2215-2075 |
| DOI: | 10.15517/rbt.v61i1 |
| Popis: | Turbinella angulata and Busycon perversum are two marine gastropods that support the 90% of conch fisheries in the Gulf of Mexico, nevertheless there is no information available to support a management strategy for both species. The aim of this work was to obtain preliminary fishery information to promote management actions for both species in the Campeche Bank. The population of conchs was sampled in 12 transects (150x1.5m) by SCUBA diving from April 2008 to March 2010. All conchs were collected and siphonal length (SL) was measured. These samples were complemented with data from the commercial catches, analyzing a total of 2 832 individuals of T. angulata. Siphonal length varied between 63 and 282mm. Sex ratio was of 0.98:1 female:male. The von Bertalanffy growth equation parameters were: L∞=346mm; K=0.30 and t0=-0.24. Spawning extended from January to May with a long resting stage from June to September for over 80% of the adult population. The first gonadic maturity (L50) was at 210mm (SL) for females and 200mm for males. For B. perversum a total of 1 655 individuals were analyzed. Siphonal length varied between 78 and 291mm with significant differences between male and female (p |
| Databáze: | OpenAIRE |
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