Variation in habitat use by juvenile Acadian redfish, Sebastes fasciatus

A basic paradigm in behavioral ecology is that organisms expand their distribution as preferred sites become saturated with individuals that reduce the availability of resources (e.g., shelter, prey) on a per capita basis. Previous fish community studies at Stellwagen Bank National Marine Sanctuary...

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Bibliographic Details
Published in:Environmental biology of fishes 2003-12, Vol.68 (4), p.381-389
Main Authors: AUSTER, Peter J, LINDHOLM, James, VALENTINE, Page C
Format: Article
Language:English
Subjects:
Agnatha. Pisces
Animal and plant ecology
Animal, plant and microbial ecology
Animals
Autoecology
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Gravel
Habitat utilization
Habitats
Mud
Ocean floor
Reefs
Resource availability
Vertebrata
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Summary:A basic paradigm in behavioral ecology is that organisms expand their distribution as preferred sites become saturated with individuals that reduce the availability of resources (e.g., shelter, prey) on a per capita basis. Previous fish community studies at Stellwagen Bank National Marine Sanctuary have shown that juvenile Acadian redfish Sebastes fasciatus (20cm TL) also occurred in dense cerianthid habitats. Two explanations for these distributions can be advanced. The simplest is that redfish use both boulder and cerianthid habitats on an encounter basis, regardless of habitat saturation or predation pressure. Alternatively, boulder reefs serve as recruitment habitats and cerianthid habitats serve as a conduit for redfish moving away from saturated boulder reef sites, essentially serving as elements of a 'redfish pump'.[PUBLICATION ABSTRACT]
ISSN:0378-1909
1573-5133
DOI:10.1023/B:EBFI.0000005751.30906.d5