Aquatic Biology
Aquatic Biology is a gold Open Access journal and a multidisciplinary forum for research on the biology of organisms in marine, brackish and fresh waters. SEDAO (Sexuality and Early Development in Aquatic Organisms), an international journal that covered all aspects of reproduction and early development in marine, brackish and freshwater organisms, was incorporated into AB in late 2015.
DOI: https://doi.org/10.3354/ab00386
copiedDiet of spring and summer spawning groups of Illex argentinus inhabiting coastal waters in San Matias Gulf (northern Patagonia, Argentina)
ABSTRACT: To study the diet of 2 coastal spawning groups of Illex argentinus, we analyzed the stomach contents of 3645 specimens (10 to 36 cm in mantle length). More than half (58%) of observed stomachs were empty. There were no differences in the prey consumed between specimens of different sex and maturity stages. Additionally, no differences were observed in the diet among individuals belonging to either the summer or spring spawning groups. The most frequent prey item was fishes (0.79 frequency of occurrence), followed by cephalopods (0.18) and lastly by crustaceans (0.09). The seasonal variation of empty stomach frequency and the mean stomach fullness revealed that squids fed more actively in spring and summer and mainly preyed upon small pelagic fishes.
KEYWORDS
Augusto César Crespi-Abril (Co-author)
- Centro Nacional Patagónico (CENPAT-CONICET), Boulevard Brown s/n, Puerto Madryn 9120, Chubut, Argentina
Maria Magdalena Trivellini (Co-author)
- Universidad Nacional de la Patagonia San Juan Bosco, Boulevard Brown s/n, Puerto Madryn 9120, Chubut, Argentina