9675

• UCREFRP Catalog Number: 9675
• Author: Hoffnagle, T. L. and e. al.
• Title: Parasites of Native and Non-native Fishes of the Lower Little Colorado River, Arizona - 2000 Annual Report.
• USFW Year: 2000.
• USFW - Doc Type: \
• Copyright Material: NO

Parasites of Native and Non-native Fishes ofthe Lower Little Colorado River, Arizona - 2000 Annual Report

Lees Ferry and in the LCR (McKinney et al. 1999; Hoffnagle et al. 2000). We do not know the
temperature requirements of the other parasites. Increasing the water temperature in the
Colorado River below Glen Canyon Dam has been proposed. Implementing this strategy may
allow these parasites to increase their range and, thus, their effect on native fishes. We strongly
recommend that a survey of fish parasites of the Colorado River and other tributaries in Grand
Canyon be conducted as part of the studies concerning the temperature control device.

Acknowledgments
This work was funded by a grant to the National Wildlife Health Center (U.S. Geological
Survey - Biological Resources Division). We appreciate Grand Canyon National Park, Navajo
Natural Heritage Program and the U.S. Fish and Wildlife Service for granting permits to conduct
this work. Dr. Wesley Shoop, Bruce Michael, Scott Hansen, Scott Hale, Anson Koehler and
Lara Myers provided skillful and enthusiastic field assistance.

Literature Cited

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