Actividad reproductiva de Strombus gigas (Mesogasteropoda: Strombidae) en diferentes hábitats del Arrecife Alacranes, Yucatán
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| Autores: | , |
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| Formato: | artículo original |
| Estado: | Versión publicada |
| Fecha de Publicación: | 2003 |
| Descripción: | The spawning relationships with temperature/photoperiod of Strombus gigas were investigated considering three habitats in Alacranes Reef, Yucatan, between February 1999 and March 2000. The sites were 22º34’N, 89º42’W (site 1); 22o29’N, 89o45’W (site 2) and 22°22’N, 89o39’W (site 3). At each site, transects (100 m x 10 m) were done. Different kinds of reproductive behavior of S. gigas was observed: such as copulating and egg-laying. Individuals alone and egg masses were registered as well. The S. gigas shell length and lip thickness were measured. High density of adults was found at site 2 with 87 conchs in one transect of 1000 m2. The mean density per m2 was 0.004 for site 1; 0.035 for site 2; and 0.003 for site 3. The mean shell length was 220 mm and the lip thickness mean was 16 mm (N = 783) for all sites. In February 1999 egg-laying female was found on sand. There was a high reproductive activity at site 2 with 8 egg-laying and 18 egg masses. Minimum reproductive activity was found at site 3 with 2 egg masses. The bottom-water temperature was related positively with copulating pairs (r = 0.723, f = 11.05, p < 0.01) and egg masses (r = 0.736, f = 11.82, p < 0.1). Correlation between photoperiod with copulating pairs (r = 0.857, f = 27.78, p < 0.01) and egg masses (r = 0.782, f = 15.77, p < 0.01) were found as well. |
| País: | Portal de Revistas UCR |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Lenguaje: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/26439 |
| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/26439 |
| Palabra clave: | Strombus gigas reproduction habitat temperature photoperiod |