Arrival of an Australian anguillid eel in New Zealand: an example of transoceanic dispersal |
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Authors: | Robert M. McDowall Donald J. Jellyman Lucette H. Dijkstra |
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Affiliation: | (1) National Institute of Water and Atmospheric Research, P.O. Box 8602, Christchurch, New Zealand |
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Abstract: | Anguilla reinhardtii, hitherto known from eastern Australia, New Caledonia, Norfolk Island, and Lord Howe Island, has recently been discovered in rivers of northern New Zealand. Identification, based on morphological and genetic characteristics, is unequivocal; eight consecutive year classes have been found. The only reasonable explanation of this occurrence is transoceanic dispersal to New Zealand, probably from subtropical oceanic spawning grounds north of New Zealand. This corroborates past hypotheses that the strongly diadromous freshwater fish fauna of New Zealand is derived by transoceanic dispersal of known marine life intervals. This revised version was published online in July 2006 with corrections to the Cover Date. |
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Keywords: | biogeography Anguilla fish |
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