7774

• UCREFRP Catalog Number: 7774
• Author: Desert Fishes Council, H., Dean A., ed.)‎.
• Title: Proceedings of the Desert Fishes Council Volume XXIV, 1992 Annual Symposium, 18 to 21 November, Mesa, Arizona.
• USFW Year: 1992.
• USFW - Doc Type: November 18-21.
• Copyright Material: NO

PROCEEDINGS OF THE DESERT FISHES COUNCIL 1992 - VOLUME XXIV
TMBETS, C. A. (CAT - Department of Zoology, Arizona State University, Tempe, Arizona 85287-1501)
Allozyme variation in populations of the spikedace Meda fulgida and the loath minnow
Tiaroga cobitis l Variacidn de aloenzimas en poblaciones del charalito picudo Meda fulgida
y el charalito moteado Tiaroga cobilis
KEYWORDS: allozymic variation; population structure; Meda fulgida; Tiaroga cobitis
ABSTRACT
Due to the threatened status of both the ]oath minnow Tiaroga cobitis and spikedace Meda fulgida, information
about the genetic characteristics of remaining populations is crucial for successful management of these species. Previous
investigations described mitochondria) DNA (mtDNA) variation within and among populations of these fishes. In this
study, the distribution of nuclear DNA variation in each species was determined by protein electrophoresis. An initial
screening of approximately 30 presumptive loci yielded five that were polymorphic. Individuals collected from most of
the remaining populations of loath minnow and spikedace in Arizona and New Mexico were assayed for the polymorphic
loci, providing an assessment of the distribution of genetic variation within and among populations of each species.
Comparisons between allozyme data and mtDNA data reveal similar patterns of geographic variation within each species.
The data indicate a geographic component to population structure of each species. Genetically distinctive units should
be managed as separate units to preserve existing genetic variation.
RESUMEN
Ademas de tener categorfa de amenazados el charalito moteado Tiaroga cobitis y el charalito picudo Meda fulgida,
la informati6n acerca de las caracterfsticas geneticas de las poblaciones que permanecen es crucial para el manejo exitoso
de estas especies. Investigations previas describen variaci6n en el ADN mitocondrial dentro y entre Las poblaciones de
estos peces. en este estudio, la distribuci6n de ]a distribuci6n del ADN nuclear en cada especie fue determinada por
electroforesis proteica. Un corrimiento initial de aproximadamente 30 presuntos loci rindi6 cinco que fueron
polim6rficos. Los individuos colectados de la mayoria de las poblaciones que permanecen del charalito moteado y el
charalito picudo en Arizona y Nuevo Mexico fueron evaluados para el loci polim6rfico, proporcionando una evaluaci6n
de la distribucion de la variaci6n genetica dentro y entre las poblaciones de cada especie. Comparaciones entre los datos
de aloenzimas y ADN mitocondrial revelan patrones de variaci6n geograpia dentro de cada especie. Los datos indican
un componente geograpio para cada estructura poblacional de cada especie. Unidades geneticamente distintivas se pueden
manejar Como unidades separadas para preservar la variaci6n genetica existente.
UIUBBS STUDENTT?PAPER COMPETITOR]
QUARTARONE, 1 . G. (Recovery Program for the Endangered Fish of the Upper Colorado River Basin)
Results of a historical research project about the endangered fish of the Upper Colorado
River basin / Resultados del proyecto de investigation histurica acerca de los peces en
peligro de la Cuenca Alta del Rfo Colorado
KEYWORDS: history; anecdotes; upper basin; Colorado; Utah; Wyoming; Ptychocheilus lucius; Gila cypha; Gila
elegans; Xyrauchen texanus
ABSTRACT
Senior citizens familiar with rivers in the upper basin represent important sources of historical data about
endangered Colorado squawfish Ptychocheilus Lucius, razorback suckers Xyrauchen texanus, humpback chubs Gila cypha
and bonytail chubs Gila elegans. With the passing of each of these seniors, potential knowledge about the endangered
fish is lost.
In the spring of 1992, the Recovery Program for the Endangered Fish of the Upper Colorado River Basin assigned
me to complete a historical research project about the fish utilizing senior citizens as a primary data source. As a
secondary source, published works, including news clippings, magazine stories and reports (of a non-technical nature)
were utilized.
Portions of the research project will be presented and will briefly discuss: Ways the endangered fish were used
(food, bait, fertilizer, etc.); historic sizes of endangered fish; possible causes of decline offered by the seniors; common
and uncommon names of the fish; and people's attitude toward the fish.
RESUMEN
Los ciudadanos mas antiguos familiarizados con los rfos en ]a cuenca alta representan fuentes importantes de datos
hist6rico acerca de Las especies en peligro charal del Colorado Ptychocheilus lucius, matalote jorobado Xyrauchen
texanus, charalito jorobado Gila cypha y charalito aleta dura Gila elegans. Con al perdida de cada uno de estos
ciudadanos, el conocimiento potential acerca de peces en peligro esta perdido.
En la primavera de 1992, el Programa de Recuperaci6n para Peces en Peligro de la Cuenca Alta del Rfo Colorado
me asign6 completar un proyecto de investigacinn historiaa acerca de la utilizaci6n de los peces por los ciudadanos
antiguos comp una fuente primaria de datos. Como una fuente secundaria fueron utilizados trabajos publicados,
incluyendo nuevos recortes, reportes a historias periodisticas (de naturaleza no tecnica).
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