Estimated consumption of Atlantic cod (Gadus morhua) and some other prey by grey seals (Halichoerus grypus) and harp seals (Phoca groenlandica) in the southern Gulf of St. Lawrence (NAFO division 4T) /

In the 4R assessment this diet was separated into a high cod diet for the southern part of 4R(d) and a low cod diet for the northern part of 4R(abc). [...] With the exception of a few stomachs collected from grey seals from the Magdalen Islands in the early 1990s, Information is lacking on prey consumed by grey seals in the central or northern portion of NAFO zone 4T , around the regions of Gaspe and the Magdalen Islands, an area where cod are known to be more abundant. [...] Lawrence overwinter are limited and our estimates are based on assumptions concerning changes in population size and the component of 4T cod in the diet consumed in 4VN. [...] This sample likely underestimates cod consumption because cod leave the Gulf during the winter when sampling of seals in both the Estuary and the Magdalen Island area occurred. [...] The assessment of competition between seals and commercial fisheries in the North Sea and the Antarctic.