Two strigeoid trematodes, Apatemon (Apatemon) gracilis (Rudolphi, 1819) and Diploetomum (Dolichorchis)galaxiae n. sp., which encyst in the freshwater fish Galaxias auratus Johnston in Lake Crescent, Tasmania.
Smith, SJ and Hickman, JL (1983) Two strigeoid trematodes, Apatemon (Apatemon) gracilis (Rudolphi, 1819) and Diploetomum (Dolichorchis)galaxiae n. sp., which encyst in the freshwater fish Galaxias auratus Johnston in Lake Crescent, Tasmania. Papers and Proceedings of the Royal Society of Tasmania, 117 . pp. 21-39. ISSN 0080-4703
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The metacercaria and adult of Apatemon (Apatemon) gracilis (Rudolphi) and Diplostomum
(Dolichorchis) galaxiae n.sp. are described and figured. Metacercarial cysts of these
species occur in different parts of the endemic fish Galaxias auratus: A. gracilis in the
body cavity, orbit and vitreous humour, and D. galaxiae n.sp. visible as black spots
('black-spot disease') in the musculature of the body and head. A gracilis which has not
previously been recorded from Australia occurs in the black duck, Anas superciliosa, while
D. galaxiae n.sp. infects the white-faced heron, Ardea novaehollandiae. The domestic duck,
Anas platyrhynchos, is much more susceptible to experimental infection by Apatemon
gracilis than by D. galaxiae n.sp. Both flukes inhabit the upper small intestine of their
bird hosts. The reproductive system of D. galaxiae n.sp. is amphitypic. D. galaxiae n.sp.
most closely resembles D. heronei Srivastava, 1954 and D. ketupanensis Vidyarthi, 1937; a
key to species in the sub-genus Dolichorchis is given.
|Additional Information:||Copyright Royal Society of Tasmania|
|Keywords:||Royal Society of Tasmania, RST, Van Diemens Land, natural history, science, ecology, taxonomy, botany, zoology, geology, geography, papers & proceedings, Australia, UTAS Library|
|Deposited By:||ePrints Officer|
|Deposited On:||25 May 2012 13:52|
|Last Modified:||03 Jul 2012 12:34|
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