Studies on sexual dimorphisms in the Ampullae of Lorenzini in the lesser spotted catshark, Scyliorhinus canicula

N. Crooks, Colin Waring

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The Ampullae of Lorenzini can vary in their size, shape and distribution patterns among elasmobranch species. However, no study has compared the ampullary characteristics between the sexes within a species. The present study found a sexual dimorphism in the Ampullae of Lorenzini of the lesser-spotted catshark, Scyliorhinus canicula. Male S. canicula were found to possess longer ampullae and alveoli, greater numbers of alveolar bulbs, larger sensory epithelial surface areas and greater numbers of sensory receptor cells in the ampullae than female S. canicula. Greater lengths of both ampullae and alveoli, numbers of alveoli, larger sensory epithelial surface areas and greater numbers of sensory receptor cells in male S. canicula could increase the capability of adult male S. canicula in detecting females. The presence of the sexual dimorphism in the alveoli of the Ampullae of Lorenzini could be directly related to reproductive behaviour and/or reflect the sexual segregation patterns of adult S. canicula.
    Original languageEnglish
    Pages (from-to)585-590
    Number of pages6
    JournalEnvironmental Biology of Fishes
    Volume96
    Issue number5
    DOIs
    Publication statusPublished - May 2013

    Fingerprint

    Dive into the research topics of 'Studies on sexual dimorphisms in the Ampullae of Lorenzini in the lesser spotted catshark, Scyliorhinus canicula'. Together they form a unique fingerprint.

    Cite this