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Relaciones tr贸ficas entre el calamar gigante DosidDicus gigas y el pez luminoso Vinciguerria lucetia en el sistema de la corriente de Humboldt de Per煤
9 pages, 4 figures, 3 tables[EN] Acoustic surveys for assessing the biomass and distribution of the jumbo squid (Dosidicus gigas) and the lightfish (Vinciguerria lucetia) were carried out in the Humboldt Current System of Peru in 2007 and 2008. At the same time, 937 jumbo squid were caught and their stomach contents analyzed. The diet of the jumbo squid was dominated by mesopelagic fish. The first component of their fish diet was V. lucetia and the second component was the myctophid fish Diogenichthys laternatus. Acoustic biomass estimates of these species show that V. lucetia is an important component in aggregative structures in the Humboldt Current System of Peru and its distribution and movements are closely related to the migratory movements of the jumbo squid. The trophic relationship observed between D. gigas and V. lucetia promotes an increase in jumbo squid biomass and, has a positive trophic effect on the ocean ecosystem[ES] La biomasa de calamar gigante Dosidicus gigas y el pez mesopel谩gico Vinciguerria lucetia se obtuvo a partir de detecci贸n ac煤stica en la Corriente de Humboldt de Per煤 durante 2007 y 2008. Simult谩neamente, 937 calamares fueron capturados y se les analiz贸 el contenido estomacal. La dieta de D. gigas estuvo dominada por peces, siendo V. lucetia el principal componente y en segundo lugar el mict贸fido Diogenichthys laturnatus.
A partir de la evaluaci贸n de la biomasa de ambas especies, estimada por el m茅todo ac煤stico, se observ贸 que V. lucetia es uno de los principales componentes en el sistema de la Corriente de Humboldt de Per煤 y sus patrones de distribuci贸n y movimientos espacio-temporal est谩n fuertemente relacionados a los desplazamientos migratorios del calamar. Estas relaciones tr贸ficas promueven un incremento de la biomasa de D. gigas que es resultado de un patr贸n similar en V. lucetia, lo que propicia un efecto tr贸fico positivo en el ecosistema oce谩nicoThis article is partly based on the PhD thesis in Marine Science of Rigoberto Rosas Luis. His doctoral degree is supported by CONACyT (Consejo Nacional de Ciencia y Tecnolog铆a, M茅xico).Peer reviewe