Ontogenic change in phototaxis of the clam shrimp Eulimnadia braueriana Ishikawa, 1895 (Branchiopoda: Spinicaudata)

Jer-Yuh Liu, Chun Chieh Wang, Lien Siang Chou

    Research output: Contribution to journalArticle

    2 Scopus citations

    Abstract

    Photoresponse in nauplii, juveniles, and adult hermaphrodites of the clam shrimp Eulimnadia braueriana Ishikawa, 1895 was measured under four different artificial illuminances ranging from 19,688 to 48,286 lux. The nauplii displayed consistent positive phototaxis through all illuminances. The juveniles and adults, however, showed no response to the dimmest light and reacted negatively at all the other treatments. The change in phototaxis occurs when nauplii develop into juveniles and may lead to a different vertical distribution. It signifies an adaptive strategy in dispersion, foraging, predator avoidance, and in minimizing intraspecific competition.

    Original languageEnglish (US)
    Pages (from-to)33-38
    Number of pages6
    JournalJournal of Crustacean Biology
    Volume36
    Issue number1
    DOIs
    StatePublished - Jan 1 2016

    Keywords

    • Eulimnadia braueriana
    • distribution
    • illuminance
    • large branchiopods
    • photoaxis

    ASJC Scopus subject areas

    • Aquatic Science

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