Seasonal Migration Behaviors and Distribution of Adult Pacific Lampreys in Unimpounded Reaches of the Snake River Basin
| Autor: | Christopher A. Peery, Christopher C. Caudill, Brian J. McIlraith, Matthew L. Keefer, Brian P. Kennedy |
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| Rok vydání: | 2015 |
| Předmět: |
geography
Fish migration geography.geographical_feature_category Ecology biology Entosphenus tridentatus Drainage basin Management Monitoring Policy and Law Aquatic Science biology.organism_classification Pacific ocean Fishery Pacific lamprey Tributary human activities Ecology Evolution Behavior and Systematics |
| Zdroj: | North American Journal of Fisheries Management. 35:123-134 |
| ISSN: | 1548-8675 0275-5947 |
| DOI: | 10.1080/02755947.2014.986344 |
| Popis: | Complex life histories render anadromous fishes particularly susceptible to environmental and anthropogenic change. Adult Pacific Lampreys Entosphenus tridentatus migrating in the Columbia River and its tributaries must ascend a series of dams to reach interior spawning sites. While considerable research has focused on improving dam passage for lampreys, little is known about adult Pacific Lamprey behavior and distribution patterns within free-flowing environments, particularly within the interior portions of their distribution. In this 3-year study, we monitored the movements of 146 adult Pacific Lampreys in the Snake River and its tributaries upstream from Lower Granite Dam, the eighth dam from the Pacific Ocean. Our objectives were to characterize migration and test several hypotheses about adult upstream movement after dam passage. A majority of radio-tagged adults, released above Lower Granite Dam, migrated upstream after release and many moved hundreds of kilometers upstream into Snake River... |
| Databáze: | OpenAIRE |
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