Some features of the life history of the cockscomb prickleback : Anoplaruchus purpurescens Gill ...
The cockscomb prickleback, Anoplarchus purpurescens Gill, family Stichaeidae, ranges from Attu Island and Pribilof Islands, Alaska, to central California. In British Columbia coastal waters it is a bottom-dwelling intertidal species, geographically sympatric with A. insignis, which appears to prefer...
| Main Author: | |
|---|---|
| Format: | Text |
| Language: | English |
| Published: |
University of British Columbia
2011
|
| Subjects: | |
| Online Access: | https://dx.doi.org/10.14288/1.0302515 https://doi.library.ubc.ca/10.14288/1.0302515 |
| Summary: | The cockscomb prickleback, Anoplarchus purpurescens Gill, family Stichaeidae, ranges from Attu Island and Pribilof Islands, Alaska, to central California. In British Columbia coastal waters it is a bottom-dwelling intertidal species, geographically sympatric with A. insignis, which appears to prefer deeper water than A. purpurescens. A. purpurescens was collected and studied at an intertidal site at Second Narrows, Burrard Inlet, Vancouver, British Columbia. Morphological variation within the population studied, was examined by both measurements and meristic counts. Data obtained were used to differentiate the population of A. purpurescens used in the study, from its sibling species A. insignis. Food and feeding habits were studied over a wide range in size, with emphasis on habitat and seasonal differences shown. Relative importances of various food items reflected differences in availability of organisms utilized as food at various tide levels. Food intake is curtailed in adult fish approaching and during ... |
|---|