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Journal of the Royal Society of New Zealand abstractsPredation of inanga (Galaxias maculatus) eggs by field mice (Mus musculus)Cindy F. BakerNational Institute of Water and Atmospheric Research Limited, PO Box 11115, Hillcrest, Hamilton 3251, New Zealand. c.baker@niwa.co.nzAbstract The common house mouse Mus musculus was observed feeding on the eggs of the indigenous fish, the inanga Galaxias maculatus. This mouse is an introduced species to New Zealand and could potentially be a major predator of the eggs of inanga and other galaxiids that utilise the terrestrial environment for spawning. Further investigation into mice densities and egg predation within known inanga spawning grounds is warranted to determine whether mice are indeed major predators of inanga eggs. If so, whitebait spawning ground management may need to incorporate rodent control measures. Keywords inanga; Galaxias maculatus; egg mortality; whitebait; predation; spawning; Mus musculus R06006; Received 11 April 2006; accepted 5 September 2006;
Online publication date 13 September 2006
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