Feeding habits of Caranx vinctus (Perciformes: Carangidae), a commercially important species in Acapulco Bay, Guerrero, Mexico.
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| المؤلفون: | , , , , , |
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| التنسيق: | artículo original |
| الحالة: | Versión publicada |
| تاريخ النشر: | 2020 |
| الوصف: | Introduction: Caranx vinctus is an important species in local fisheries, used as a source of protein for human consumption, however, its trophic ecology is little known on the Mexican Pacific coast. Objective: Know the feeding habits of C. vinctus. Methods: The stomach contents of 268 specimens, captured beach nets, in the Playa Las Hamacas cooperative society, in Acapulco Bay, Guerrero, Mexico, were items). Diet analyzed. The prey-specific index of relative importance (% PSIRI) was applied to determine the main food categories (breadth was calculated using Levin’s index. Possible differences in the diet by sex, sexual maturity, or season were identified through Morisita Horn index and a multivariate ANOSIM analysis. Results: Crustaceans mainly represented by megalopa larvae of Portunoidae (16.51 %), Teleostei (12.7 %), unidentified organic matter (11.2 %), and Anchoa ischana (10.6 %) were the most important food items. The Levin index indicates low amplitude of the trophic niche (Bi = 0.29) so C. vinctus can be considered as a specialist predator with marked preferences towards some food items. The Morisita Horn index indicated that there was an overlap between sexes (females and males Cλ = 0.84), but not between sexual maturity (Juveniles and adults Cλ = 0.56) and seasons (Rainy and dry Cλ = 0.03). ANOSIM analysis indicated that there were significant differences in the diet of C. vinctus by sex, sexual maturity, and season. Conclusion: It was established that in general C. vinctus is a zoplantophage and ichthophagus species (Trophic Level = 3.39). |
| البلد: | Portal de Revistas UCR |
| المؤسسة: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| اللغة: | Español |
| OAI Identifier: | oai:archivo.portal.ucr.ac.cr:article/40561 |
| الوصول للمادة أونلاين: | https://archivo.revistas.ucr.ac.cr/index.php/rbt/article/view/40561 |
| كلمة مفتاحية: | jack Carangidae diet trophic level Portunoidae Anchoa ischana Tropical Eastern Pacific jureles dieta nivel trófico Pacífico Oriental Tropical |