The feeding of American plaice (Hippoglossoides platessoides), Redfish (Sebastes marinus) and Cod (Gadus morhua) in the Flemish Cap during July 1988

• Main Authors: Paz, Xabier, Vázquez-Álvarez, Francisco Javier, Fernández-Arroyo, Anxo, Casas-Sánchez, José Miguel, Cárdenas-González, Enrique de
• Format: Report
• Language: English
• Published: 1989
• Subjects: Pesquerías; Centro Oceanográfico de Vigo; Gadus morhua; North Atlantic; Northwest Atlantic; Sebastes marinus
• Online Access: http://hdl.handle.net/10508/634; http://hdl.handle.net/10261/329080

A randomly stratified bottom-trawl survey was realized in the Flemish Cap (NAFO Div. 3M) in July 1988. The stomach contents of three species were studied: 320 of American plaice (Hippoglossoides platessoides), 203 of redfish (Sebastes Marinus) and 468 of cod (Gadus morhua). The cod specimens were classified taking into account age groups; in the case of other species by length classes. The food items, the prey occurrence index and the diversity index were determined too. The Schoener overlap index was calculated to study the intraspecific diet overlap in cod and the interspecific diet overlap between the three species. The relation between predator size (cod) and prey size (redfish) was also studied.