Is the fecundity of the Atlantic mackerel (Scomber scombrus: Scombridae) determinate?

摘要: Abstract Current methods of stock assessment using plankton surveys and fecundity measurements are based on the assumption that western mackerel (Scomber scombrus L.) has a determinate fecundity, is, number oocytes destined to be matured in season is decided prior spawning can identified counted before release first egg batch. This been questioned recent years possibility serious miscalculation raised. Evidence presented here shows that: A hiatus does not develop size frequency distribution between previtellogenic vitellogenic spawning. The (potential annual fecundity) declines during agreement potential measured eggs shed calculated by estimating batches duration somewhat ambiguous. productio...