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Last modified
7/14/2009 5:02:31 PM
Creation date
5/20/2009 10:26:56 AM
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UCREFRP
UCREFRP Catalog Number
7768
Author
Desert Fishes Council, H., Dean A., ed.).
Title
Proceedings of the Desert Fishes Council Volumes XXII and XXIII, 1990 and 1991 Annual Symposia and Index for Volumes XVI through XXIII.
USFW Year
1992.
USFW - Doc Type
July 1992.
Copyright Material
NO
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Chemoreception, Imprinting, and Propagation of Colorado Squawfi.sh <br />and Razorback Sucker: a Plan of Study <br />Harold M. Tyus <br />U.S. Fish and Wildlife Service <br />ABSTRACT <br />There is evidence that chemoreception is involved in spawning site <br />selection and other life events in Colorado squawfish Ptvchocheilus lucius and <br />razorback sucker Xvrauchen texanus. The potential role of olfaction and <br />imprinting in the recovery of extant populations of these endangered fishes is <br />discussed and related to their reproduction. A work plan is proposed that <br />would: 1) evaluate the roles of imprinting, learning, and genetic control on <br />the reproductive ecology of Colorado squawfish and razorback sucker, 2) <br />determine the mechanism by which adult fish locate suitable spawning areas, 3) <br />assess the role of olfaction in habitat selection, and 4) develop plans for <br />the establishment of new stocks of these fishes using information about their <br />reproductive ecology. <br />RESUMEN <br />Existe evidencia de que la quimiorecepci6n participa en la selecci6n del <br />sitio de desove y en otros eventos durante el ciclo de vida del Colorado <br />squawfish Ptvchocheilus lucius y del razorback sucker Xyrauchen texanus. Este <br />trabajo discute el papel potencial del olfato y la impronta en la recuperaci6n <br />de poblaciones ex'istentes de estas especies en peligro de extinci6n, con <br />relaci6n a su reproduccion. Se propone un plan de trabajo que inclu e: <br />1)evaluar el papel de la impronta, el aprendizaje y el control gen6tico en la <br />ecologia reproductiva del Colorado squawfish y del razorback sucker; 2) <br />determinar los mechanismos por medio de los cuales los peces adultos localizan <br />las areas de desove disponibles; 3) evaluar el papel del olfato en la <br />selecci6n del habitat; y 4) desarrollar planes para el establecimiento de <br />nuevos stocks de estos peces utilizando informaci6n acerca de su ecologia <br />reproductiva. <br />9
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