The occurrence and feeding of Pomatomus saltatrix (elf) and Lichia amia (leervis) juveniles in two Cape south coast estuaries

Abstract

The seasonal occurrence of Pomatomus saltatrix and Lichia amia juveniles in a permanently open (Knysna) and a periodically open (Swartvlei) estuary is described. P. saltatrix was caught only in Knysna from September to April. L. amia was found in both systems intermittently throughout the year. Small juveniles were most abundant from November to February in Knysna and from December to February in Swartvlei. Prey selected varies with size and species although there is some overlap. Behavioural and morphological differences are discussed in relation to prey selection.