Not all drift feeders are trout: a short review of fitness-based habitat selection models for fishes

Currently, there are few mechanistic fitness-based habitat selection models for stream fishes and most models used by management agencies focus on physical habitat alone. In this review, I describe the historical development and the status of mechanistic, fitness-based, habitat selection models for...

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Bibliographic Details
Published in:Environmental biology of fishes 2014-05, Vol.97 (5), p.465-473
Main Author: Grossman, Gary D
Format: Article
Language:English
Subjects:
Animal populations
Animal Systematics/Taxonomy/Biogeography
Biomedical and Life Sciences
Economic importance
Environment
Fish
Foraging behavior
Freshwater
Freshwater & Marine Ecology
Habitat selection
Habitats
Life Sciences
Microhabitats
Nature Conservation
Salmonidae
trout
Water column
Zoology
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Summary:Currently, there are few mechanistic fitness-based habitat selection models for stream fishes and most models used by management agencies focus on physical habitat alone. In this review, I describe the historical development and the status of mechanistic, fitness-based, habitat selection models for both water column (i.e., drift-feeding) and benthic stream fishes focusing on North America. Although the majority of drift feeders are not salmonids, most mechanistic habitat selection models have been developed and tested only in this group of fishes, likely due to their substantial economic importance. I review the fitness-based microhabitat selection model of Grossman et al. (Ecol Fresh Fish 11:2–10, 2002), which has been tested in both a salmonid and multiple cyprinid species. The model predicts optimal focal point velocities for drift feeders based on prey capture success–velocity relationships and does not include physiological costs, which are logistically difficult to quantify. In addition, I discuss mechanistic, fitness-based models used to predict microhabitat (i.e., patch) selection in benthic fishes. For both basic scientific and management/conservation perspectives, it is important to quantify habitat choice in fishes using mechanistic, fitness-based criteria.
ISSN:0378-1909
1573-5133
DOI:10.1007/s10641-013-0198-3