LENGTH-WEIGHT RELATIONSHIPS FOR SEVERAL LARGE PELAGIC SHARKS FROM THE INDIAN OCEAN
Fork length-dressed weight relationships on shark species (Prionace glauca, Isurus oxyrinchus, Carcharhinus longimanus and Carcharhinus falciformis) were obtained from 8,331 observations recorded at sea on longliners. Significance of the sex factor was specifically assessed using GLM procedures. Lin...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión aceptada para publicación |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/322057 |
| Acceso en línea: | http://hdl.handle.net/10261/322057 |
| Access Level: | acceso abierto |
| Palabra clave: | Pesquerías Centro Oceanográfico de A Coruña weight length sharks size |
| Sumario: | Fork length-dressed weight relationships on shark species (Prionace glauca, Isurus oxyrinchus, Carcharhinus longimanus and Carcharhinus falciformis) were obtained from 8,331 observations recorded at sea on longliners. Significance of the sex factor was specifically assessed using GLM procedures. Linear and non-linear fits of size-weight data by species were tested. The results obtained were compared with those values provided by other authors using equivalent type of data. Deviation of the predicted versus observer weights were also assessed. Both types of fits tested have provided similar results, their confidence intervals plotted are mostly overlapped and the equations obtained were generally within those confidence intervals. Predicted mean dressed weights at size by species were in most cases quite similar or just mimetic to those obtained using equations previously reported. |
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