IIMYC   23581
INSTITUTO DE INVESTIGACIONES MARINAS Y COSTERAS
Unidad Ejecutora - UE
artículos
Título:
Energy density of age-0+ Merluccius hubbsi (Actinopterygii, Merlucciidae) as a food quality proxy for upper level predators
Autor/es:
TEMPERONI, BRENDA; MASSA, AGUEDA; VIÑAS, MARIA DELIA
Revista:
Pan-American Journal of Aquatic Sciences
Editorial:
PanamJAS
Referencias:
Lugar: Rio Claro; Año: 2020 vol. 15 p. 195 - 203
ISSN:
1809-9009
Resumen:
Assessing the energy density (ED) of forage fish provides key information for toppredators bioenergetics? models and food web studies. In the Argentinean Continental Shelf(ACS), age-0+ year individuals of the Patagonian stock of Merluccius hubbsi concentrate in theSan Jorge Gulf (45º-47ºS, 65º30?W), where they constitute an important food source fordemersal fish, seabirds and marine mammals species. Age-0+ M. hubbsi ED -deriving fromproteins and lipids stored in muscle and liver- was determined as a food quality proxy, to gaininsight into the amounts of energy they pass to predators. ED values ranged from 1.6 to 5.5 kJ g?1 wet weight (3.4 ± 0.9) (n = 40), with muscle explaining most of its variation (R2 = 0.99; p