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| Format: | Artículo científico |
| Language: | en |
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Universidad de Costa Rica
2007
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| Online Access: | https://www.redalyc.org/articulo.oa?id=44955125 |
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Table of Contents:
- Distribución espacial y temporal del cangrejo Callinectes sapidus (Decapoda: Portunidae) en la Bahía de Chetumal, Quintana Roo, México Héctor J. Ortiz-León Alberto de Jesús-Navarrete Eloy Sosa Cordero Biología Caribbean blue crab Chetumal Bay distribution Callinectes sapidus Temporal and spatial distribution of the crab Callinectes sapidus (Decapoda: Portunidae) inChetumal Bay, Quintana Roo, Mexico. In order to determine temporal and spatial distribution patterns ofCallinectes sapidus, samplings were carried out during the cold-front (January-February), dry (May-June) andrainy (August-September, 2002) climatic seasons, in 30 sampling stations of Chetumal Bay, grouped in sectorsA (14 stations), B (eight stations) and C (eight stations). In each sampling station crabs were collected fromtwo transects parallel to the coast, each with three traps, separated by 30 m. Sediments were calcareous coarseand medium sand, white or lightly gray. A total of 1 031 specimens were collected. CPEU (Capture Per EffortUnit) differed spatially and temporally. Highest CPEU was found in sector C with 1.3 ind∙trap-1, and in the rainyseason with 1.1 ind∙trap-1. Population was predominantly composed of male individuals. The male:female ratiowas 15:1. Males and adults (group II) CPEU was significant different between sectors and climatic seasons.Both males and adults (group II) had a greater CPEU in sector C (1.2 ind∙trap-1) and in the rainy season (1.1ind∙trap-1). Abundance of female and juvenile individuals (group I) was low during the sampling period whereasgroup 0 juvenile individuals were not found. A greater relative frequency between sectors and climatic seasonswere observed in 130-139 mm and 140-149 mm size interval (CW). C. sapidus occurred on sandy sedimentsin Chetumal Bay. Pearson product moment correlations exhibited significant relationships between CPEU andtemperature, salinity and dissolved oxygen. In Chetumal Bay, the spatial and temporal distribution of C. sapiduscan be related to salinity, temperature, habitat quality, food availability, recruitment and reproduction events ofindividuals. Rev. Biol. Trop. 55 (1): 235-245. Epub 2007 March. 31. 2007 artículo científico 0034-7744 https://www.redalyc.org/articulo.oa?id=44955125 en http://www.redalyc.org/revista.oa?id=449 Revista de Biología Tropical application/pdf Universidad de Costa Rica Revista de Biología Tropical (Costa Rica) Num.1 Vol.55