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Hatchery Trout Predation Data, Arizona

Data for journal manuscript: Are hatchery reared Rainbow Trout and Brown Trout effective predators on juvenile native fish?


Publication Date
Time Period


Ward, D.L., 2018, Hatchery Trout Predation Data, Arizona: U.S. Geological Survey data release,


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.


Point of Contact :
David L Ward, U.S. Geological Survey
Originator :
David L Ward
Metadata Contact :
David L Ward, U.S. Geological Survey
Publisher :
U.S. Geological Survey
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Southwest Biological Science Center
USGS Mission Area :

Attached Files

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The purpose of the data are to evaluate the relative predation effectiveness of hathery reared Rainbow and Brown Trout compared to Wild Rainbow and Brown Trout in overnight laboratory predation trials. These laboratory data establish a baseline that will assist fisheries managers in evaluating the potential predation impacts that stocked rainbow trout and brown trout may have on native fish populations.


The author of these data request that data users contact them regarding intended use and to assist with understanding limitations and interpretation. Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data for other purposes, nor on all computer systems, nor shall the act of distribution constitute any such warranty.

Additional Information


Type Scheme Key
DOI doi:10.5066/P9RLNCAE

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