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Phototaxis of larval and juvenile northern pike

North American Journal of Fisheries Management

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Abstract

Age- Phi northern pike Esox lucius prefer vegetated habitats that are difficult to sample with standard towed gears. Light traps can be effective for sampling larval fishes in dense vegetation, given positive phototaxis of fish. We evaluated the phototactic response of young northern pike by comparing the catches of larvae and juveniles obtained with plexiglass traps deployed with a chemical light stick versus traps deployed without a light source (controls) in a laboratory raceway and in a vegetated pond. In the laboratory tests, catches of protolarvae and mesolarvae in lighted traps were 11-35 times greater than catches in control traps. The catches of juvenile northern pike in field and laboratory experiments were 3-15 times greater in lighted traps than in control traps, even though the maximum body width of the larger juveniles was similar to the width of the entrance slots of the traps (5 mm). Larval and juvenile northern pike were photopositive; thus, light traps should effectively sample age-0 northern pike for at least 6 weeks after hatching.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Phototaxis of larval and juvenile northern pike
Series title:
North American Journal of Fisheries Management
Volume
15
Issue:
3
Year Published:
1995
Language:
English
Publisher:
National Biological Service
Contributing office(s):
Upper Midwest Environmental Sciences Center
Description:
pp. 651-653
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
651
Last page:
653
Number of Pages:
3