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

Date
1967-07
Authors
Krejsa, Richard J.
Contributor
Advisor
Department
Instructor
Depositor
Speaker
Researcher
Consultant
Interviewer
Journal Title
Journal ISSN
Volume Title
Publisher
University of Hawai'i Press
Volume
Number/Issue
Starting Page
Ending Page
Alternative Title
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
Description
Keywords
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.
Extent
Format
Geographic Location
Time Period
Related To
Rights
Rights Holder
Email libraryada-l@lists.hawaii.edu if you need this content in ADA-compliant format.