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The Systematics of the Prickly Sculpin, Cottus asper Richardson, a Polytypic Species Part II. Studies on the Life History, with Especial Reference to Migration

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dc.contributor.author Krejsa, Richard J.
dc.date.accessioned 2009-03-31T23:09:32Z
dc.date.available 2009-03-31T23:09:32Z
dc.date.issued 1967-07
dc.identifier.citation Krejsa RJ. 1967. The systematics of the prickly sculpin, Cottus asper Richardson, a polytypic species: part II. Studies on the life history, with especial reference to migration. Pac Sci 21(3): 414-422.
dc.identifier.issn 0030-8870
dc.identifier.uri http://hdl.handle.net/10125/7413
dc.description.abstract The occurrence of a downstream spring migration of weakly-prickled Cottus asper in coastal streams is confirmed and documented. Successful intertidal spawning and incubation is followed by a pelagic larval stage of about one month. Metamorphosis occurs and the prejuveniles settle to the bottom to feed in the estuarine portion of the river. An upstream migration of adults precedes that of the young-of-the-year in late summer . During the non-migratory phase, prickly sculpins are located in the low gradient, low velocity portions of coastal streams. Densely-prickled Cottus asper living in distant inland waters , where access to the sea is almost impossible, undertake only local migratory movements. Densely prickled forms living in some inland lakes and streams relatively close to the sea, where access to the sea is open and relatively easy, do not migrate seaward but undertake only local movements to spawn in fresh water. The present study discusses differences in migratory behavior between "coastal" and "inland" prickly sculpins
dc.language.iso en-US
dc.publisher University of Hawai'i Press
dc.title The Systematics of the Prickly Sculpin, Cottus asper Richardson, a Polytypic Species Part II. Studies on the Life History, with Especial Reference to Migration
dc.type Article
dc.type.dcmi Text
Appears in Collections: Pacific Science Volume 21, Number 3, 1967


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