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Male Dimorphism in Two New Species of Nematode (Pharyngodonidae: Oxyurida) from New Zealand Lizards

Ruth Ainsworth
The Journal of Parasitology
Vol. 76, No. 6 (Dec., 1990), pp. 812-822
DOI: 10.2307/3282799
Stable URL: http://www.jstor.org/stable/3282799
Page Count: 11
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Male Dimorphism in Two New Species of Nematode (Pharyngodonidae: Oxyurida) from New Zealand Lizards
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Abstract

Skrjabinodon trimorphi and Skrjabinodon poicilandri are described from the recta of the New Zealand common skink (Leiolopisma nigriplantare polychroma Patterson and Daugherty, 1990) and the New Zealand common gecko (Hoplodactylus maculatus Boulenger, 1885), respectively. Analysis of proteins from these 2 species was carried out using gel electrophoresis (starch and cellulose acetate) and polyacrylamide isoelectric focusing. Five enzyme-encoding loci were revealed as useful for species separation. Each species consisted of a monomorphic female and dimorphic males. Population structure, morphology, and biochemical data supported the case for male dimorphism.

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