Data/hora: 01/06/2024 18:14:47

Provedor de dados: | 20
País: | Belgium

Título:

Alimentación del calamar Illex argentinus en la región patagónica durante el verano de los años 2006, 2007 y 2008

Feeding of Illex argentinus squid in the Patagonian region during the summer of 2006, 2007 and 2008

Autores: | Ivanovic, M.L.
Data: | 2012-04-16
Ano: | 2010
Palavras-chave: | Feeding behaviour Predation Stomach content Fishery surveys Illex argentinus Atlántico Sudoccidental; Argentina marine environment.
Resumo: | The information gathered during four research cruises carried out in January and February of 2006, 2007 and 2008 allowed to analyze the summer feeding pattern of Illex argentinus squid in the shelf and slope of the Patagonian region (43º S-51º S), SW Atlantic Ocean. Intake, that took place during daytime, had its peak as of midday. Of the preys eaten amphipods and euphausiids, two groups of zooplanktonic organisms, represented 71-99% of the diet. The most frequent preys found in three of the four cruises corresponded to amphipods, represented by a single species, the hyperiid Themisto gaudichaudii, that accounted for over 50% of the food consumed. When depth of the catching area was beyond 100 m an increase in consumption of squid and fish by specimens above 20 cm ML was observed. No clear trends were found between the type of prey consumed and the time of catches or the degree of stomach repletion of the predator. The diet, of low diversity, showed that 56-62% of the squids studied fed on a single type of prey.
Tipo: | Journal Contribution
Idioma: | Espanhol

Identificador:

Revista de investigación y desarrollo pesquero (20), p. 65-73

0325-6375

http://hdl.handle.net/1834/4224