Ontogenetic changes in mouth structures, foraging behaviour and habitat use of Scomber japonicus and Illex coindetii
The quick development of the skull structure is of vital importance to animals cluring the early stages of life given that herein are located the governing center and the mechanisms which make feeding possible. However, the rhythm of growth changes thoughout the life cycle. a process which is partic...
| Autores: | , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 1995 |
| País: | España |
| Repositorio: | accedaCRIS portal de investigación de la Universidad de las Palmas de Gran Canaria |
| OAI Identifier: | oai:accedacris.ulpgc.es:10553/1029 |
| Acceso en línea: | http://hdl.handle.net/10553/1029 http://dialnet.unirioja.es/servlet/articulo?codigo=2188600 |
| Access Level: | acceso abierto |
| Palabra clave: | 3105 Peces y fauna silvestre Ontogeny Mouth structures Caballa Migration Shifts Size |
| Sumario: | The quick development of the skull structure is of vital importance to animals cluring the early stages of life given that herein are located the governing center and the mechanisms which make feeding possible. However, the rhythm of growth changes thoughout the life cycle. a process which is particularly manifest in the proportionate head/body growth. The mouth structures grow proportionately to heacl growth. These accentuated changes in the anatomy of the animal could be reflected in its behavioural pattern (migrations between two areas in the case of sorne species and significant changes in diet connecting to these migrations). Scomber japonicus (Pisces. Scombridae) and Illex coindetti (Cephalopoda. Ommastrephidae) both undergo significant changes in the rhythm of growth of their respective mouth structures when they reach arouncl 13-15 ancl 14-20 cm or total body length (mantle length in cephalopods) respectively. In Illex coindetti there are also differences by sex. being the changes or growth at 15 cm in males and around 20 cm in females. In both of these species. this change in the rhythm of growth implies a significant variation in diet as the consequence of a shift of habitat. |
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