Feeding ecology and habitat of the threespine stickleback, Gasterosteus aculeatus microcephalus, in a remnant population of northwestern Baja California, México

摘要: – The feeding ecology and habitat of the threespine stickleback (Gasterosteus aculeatus microcephalus Girard, 1854) was studied from November 1996 to May 1997 in a remnant population northwestern Baja California, Mexico. analysis stomach content 179 individuals (25 56 mm standard length [SL]) showed diet dominated by cyclopoid copepods (43.8%) chironomid larvae (39.1%). Diet relation size sex fish autumn winter during spring. overlap (Schoener’s index) significant (≥60%) between size-classes January, March April sexes for most sampling months. average prey consumed independent mouth size. strategy shifted opportunist specialist