7890

• UCREFRP Catalog Number: 7890
• Author: U.S. Fish and Wildlife Service.
• Title: Region 6, Fish and Wildlife Service Guidelines Directing Captive Propagation Of Listed And Candidate Fish.
• USFW Year: 1996.
• USFW - Doc Type: \
• Copyright Material: NO

Tois TABLE OF CONTENTS (Continued) •
Paae
D. Hybridization . . . . . . . . . . . . . . . . . . . . 12
V. Genetics Management of Captive Stocks . . . . . . . . . . 13
A. Determining the Need for Captive Propagation and
Reintroduction . . . . . . . . . . . . . . . . . . . . 13
B. Genetic Risks Associated with Captive Propagation
and Reintroduction . . . . . . . . . . . . . . . . . . 13
C. General Guidelines for Reintroduction of Captive-Reared
Fish . . . . . . . . . . . . . . . . . . . . . . . 15
D. Reasons for Maintaining Genetic Diversity in
Captive Propagation Programs . . . . . . . . . . . . 15
E. Broodstocks . . . . . . . . . . . . . . . . . . . . . . 17
F. Estimating the Number of Fish Required to Develop
Broodstocks . . . . . . . . . . . . . . . . . . . . . 18
G. Important Broodstock Considerations . . . . . . . . . . 18
H. Effective Population Size in Captive Propagation . . . 19
I. Ideal Number of Founders for Broodstock Development. . 21
J. Breeding Strategy for Captive Propagation when
Small Numbers of Fish are Available . . . . . . . . . . 21
VI. Guidelines for Disposition of Captive-Reared Listed
and Candidate Fish . . . . . . . . . . . . . . . . . . . . 23
A. Background . . . . . . . . . . . . . . . . . . . . . . 23
B. Procedures for Disposition of Captive-Reared Fish . . . 26
C. Euthanasia Protocol . . . . . . . . . . . . . . . . . 26
D. Permits Requirements . . . . . . . . . . . . . . . . . 26
VII. References . . . 27
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Appendix 1 - Glossary . . . . . . . . . . . 33
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