Un mécanisme explicatif des migrations des poissions le long des côtes du nor-ouest africain uri icon

abstract

  • A theory of fish growth is briefly presented which emphasizes gill surface area as constraint to oxygen supply, and temperature as driving oxygen demand. From this, and given the high seasonal variations of sea surface temperature off Senegal and Mauritania, a number of rule like hypotheses are derived which explain various characteristics of the alongshore migrations of pelagic fish, and of the inshore/offshore movements of sedentary species. It is suggested that research devoted to testing these hypotheses and their implication for the fisheries sector would much advance fisheries research in the region and elsewhere

publication date

  • 2008