Ultramicroscopic organization of the exterior olfactory organ in Anguilla vulgaris in relation to its spawning migration

Abstract

Olfaction is crucial in all vertebrates, including fishes as it involves reproduction, parental, feeding, defensive, schooling, and migration behaviors. Here, <i>A. vulgaris</i> is an excellent model for catadromous fishes. It has a well-developed olfactory organ to cope with the dramatic climate change, habitat loss, water pollution, and altered ocean currents effect during their catadromous life for reproduction.