A New Camallanid Nematode from Hawaii

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1966-07
Authors
Noble, Elmer R.
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University of Hawai'i Press
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Abstract
Spirocamallanus istiblenni n. sp. is described from the intestine of Istiblennius zebra, a tidepool fish at Oahu, Hawaii. Female worms average 21.5 mm long, and the adult female:male length ratio is 1.44:1.0. The chief diagnostic characters include a reduced posterior ovary, a male caudal papillae pattern of six preanal and three postanal, a spicule length ratio of 3:2, and an H-shaped arrangement of the anterior excretory canal system. The buccal capsule possesses 13-14 spiral thickenings. The possible evolutionary significance of the posterior ovary is mentioned; a list of other parasites of this host and ecological consideration s are included.
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Noble ER. 1966. A new Camallanid nematode from Hawaii. Pac Sci 20(3): 360-366.
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