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Person

David L Ward

Research Fish Biologist

Southwest Biological Science Center

Email: dlward@usgs.gov
Office Phone: 928-556-7280
Fax: (928) 556-7092
ORCID: 0000-0002-3355-0637

Location
2255 North Gemini Drive
Flagstaff , AZ 86001
US

Supervisor: Scott P Vanderkooi
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These data were compiled to evaluate the potential adverse impacts that stocked trout may have on native fish populaitons through predation. Hatchery-reared rainbow and brown trout are typically fed exclusively on commercially prepared pelleted feeds and have no experience catching or consuming life fish at the time of stocking and yet stocked fish are percieved to present a high predation risk for juvenile native fishes. These data were compiled to allow for a relative comparison of predation effectiveness between hatchery-reared fish and wild fish. Mean numbers of prey fish surviving in replicated overnight laboratory predation trials were quantified.
Tags: Aquatic Biology, Arizona, Arizona Game and Fish Department, Page Springs Fish Hatchery, Big Water, Canyon Creek, All tags...
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These data were compiled to evaluate the potential impact various environmental conditions may have on native fish populaitons through predation. Introduced warm-water sport fishes present a high predation risk for juvenile native fishes, but observations of juvenile native fish surviving and recruiting in some rare cases led us to question what environmental conditions might be responsible for these trends. These data were compiled to allow for a relative comparison of predation effectiveness between a suite of warm-water predators under a variety of environmental conditions. Mean numbers of prey fish surviving in replicated overnight laboratory predation trials were quantified.
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