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Two Parasites of Threespine Stickleback from Amchitka, Aleutian Islands, Alaska
Author(s) -
Valdez Richard A.
Publication year - 1974
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1974)103<632:tpotsf>2.0.co;2
Subject(s) - stickleback , biology , geography , fishery , zoology , oceanography , geology , fish <actinopterygii>
From 1,760 freshwater threespine stickleback examined, plerocercoids of Schistocephalus solidus and parasitic copepods, Thersitina gasterostei, were found on 22% and 21%, respectively. The former was more common in pond fish (29%) than stream fish (4%), and conversely the latter was more common in stream fish (56%) than pond fish (7%). Fish infested with S. solidus were hindered in speed and agility; those with T. gasterostei had hypertrophied gill filaments.