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1 April 1981 OBSERVATIONS ON THE OCCURRENCE OF Diplostomum spathaceum AND Schistocephalus SP. IN NINESPINE STICKLEBACKS (Pungitius pungitius) FROM THE BELCHER ISLANDS, NORTHWEST TERRITORIES, CANADA
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Abstract

All 175 ninespine sticklebacks, Pungitius pungitius (Linné), collected from the Belcher Islands were parasitized by Diplostomum spathaceum (Rudolphi) and 43% by Schistocephalus sp. D. spathaceum metacercariae were mostly confined to a dorso-ventral band encircling the lens of the eye, and were concentrated in the anteriodorsal sector of this band. The central area of the lens was thus relatively free of diplostomula, probably minimizing interference with the vision of the fish. The frequency distribution of D. spathaceum abundance in P. pungitius was closely approximated by a negative binomial, while that for Schistocephalus was best fitted by a Poisson. None of the fish condition factors examined appeared related to the intensity of the parasitic infections.

CURTIS: OBSERVATIONS ON THE OCCURRENCE OF Diplostomum spathaceum AND Schistocephalus SP. IN NINESPINE STICKLEBACKS (Pungitius pungitius) FROM THE BELCHER ISLANDS, NORTHWEST TERRITORIES, CANADA
MARK A. CURTIS "OBSERVATIONS ON THE OCCURRENCE OF Diplostomum spathaceum AND Schistocephalus SP. IN NINESPINE STICKLEBACKS (Pungitius pungitius) FROM THE BELCHER ISLANDS, NORTHWEST TERRITORIES, CANADA," Journal of Wildlife Diseases 17(2), 241-246, (1 April 1981). https://doi.org/10.7589/0090-3558-17.2.241
Received: 14 June 1979; Published: 1 April 1981
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