Aspects of the biology of Galaxias maculatus

L Laurenson, R French, P Jones, D Ierodiaconou, S Gray, V Versace, A Rattray, S Brown, J Monk

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    7 Citations (Scopus)

    Abstract

    The biology of three landlocked and a riverine population of Galaxias maculatus were examined in western Victoria, Australia. All systems supported reproducing populations of these fish, including Lake Corangamite which had salinities that on occasion reached 82. Spawning sites in Lake Corangamite were located in adjacent tributaries and not in the main lake as was the case for other populations. The smallest fish were found in the fresh water Lake Purrumbete and the largest in the hypersaline Lake Corangamite. The size at which 50% of the population attained sexual maturity varied across sites, with fish maturing at a smaller size in Lake Purrumbete, followed by the Merri River, Lake Bullen Merri and Lake Corangamite. Condition was higher in the freshwater Lake Purrumbete and there was no relationship between condition and temperature, conductivity, turbidity and pH; but there was a positive relationship between condition and dissolved oxygen. Length frequency analysis suggested that the majority of fishes live for a year.

    Original languageEnglish
    Pages (from-to)1085-1100
    Number of pages16
    JournalJournal of Fish Biology
    Volume81
    Issue number3
    DOIs
    Publication statusPublished - Aug 2012

    Keywords

    • Condition
    • Galaxid
    • Growth
    • Reproduction
    • Salinity tolerance

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  • Cite this

    Laurenson, L., French, R., Jones, P., Ierodiaconou, D., Gray, S., Versace, V., Rattray, A., Brown, S., & Monk, J. (2012). Aspects of the biology of Galaxias maculatus. Journal of Fish Biology, 81(3), 1085-1100. https://doi.org/10.1111/j.1095-8649.2012.03383.x