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The marine fauna of New Zealand: The molluscan genera Cymatona and Fusitriton (Gastropoda, Family Cymatiidae)
Beu, A.G. (1978). The marine fauna of New Zealand: The molluscan genera Cymatona and Fusitriton (Gastropoda, Family Cymatiidae). NIWA Biodiversity Memoir, 65. New Zealand Oceanographic Institute: Wellington. 5-43 pp.
Deel van: New Zealand Oceanographic Institute Memoir. New Zealand Department of Scientific and Industrial Research: Wellington. ISSN 0083-7903
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| Abstract |
Cymatona kampyla (Watson) is widespread in New Zealand and south-eastern Australia, and the following subspecies are recognised: C. kampyla kampyla (Watson), Recent, south-eastern Australia, and New Zealand and its subantarctic islands but not Macquarie Island; C. kampyla tomlini Powell, Recent, Macquarie Island; and C. kampyla jobbernsi (King), Pliocene and Pleistocene, central New Zealand. Radulae vary greatly, and Australian and New Zealand living populations show no consistent differences in shape or in radular features. Fusitriton variation is plotted graphically; and Recent forms are classified as: distinct species-F. galea Kuroda and Habe, Japan; and F. oregonensis (Redfield), California to Japan; geographic subspecies- F. cancellatus cancellatus (Lamarck), South America; F. cancellatus laudandus Finlay, around New Zealand from the Three Kings Islands to Macquarie Island; F. cancellatus murrayi (E. A. Smith), South Africa; and F. cancellatus retiolus (Hedley), south-eastern Australia.* The ecology of Cymatona and Fusitriton is discussed in terms of distribution (live and dead) with depth, latitude, and sediment type. Whereas Cymatona is endemic to Australia and New Zealand, Fusitriton has no fossil history there and did not reach the area until late Pleistocene or early Holocene. The abundance of relict dead shells of Cymatona is thought to have been caused by its ecological replacement by Fusitriton during that time. |
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