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TABLE OF CONTENTS
<br />Muraira-Alvarado, Javier Laboratorio de Acuacultura, Facultad de Ciencias Biol6gicas, Universidad Aut6noma de
<br />Nuevo Le6n
<br />Comparison of four populations of Xiphophorus couchianus by means of biological parameters
<br />Comparacidn de cuatro poblaciones de Xiphophorus couchianus mediante la evaluacidn de pardntetros
<br />biol6gicos ............................................................. 15
<br />Stefferud, J.A.*; Stefferud, S.E. JAS - USDA Forest Service, Tonto National Forest, Phoenix, AZ; SES - U. S.
<br />Fish and Wildlife Service, Ecological Services, Phoenix, AZ
<br />The status of Gila topminnow, and results of monitoring of the fish community in Redrock Canyon,
<br />Coronado National Forest, Santa Cruz County, Arizona, 1979-present
<br />Situaci6n actual del Charalito de Sonora, y resultados del monitoreo de la conwnidad de peces en el
<br />Canon Roca Rgia, Bosque National Coronado, Condado de Santa Cruz, Arizona 1979-Present.e .... 16
<br />Alvarez-Mendoza, Javier"; Valdfs-Gonztilez, A. Laboratorio de Embriologia, Facultad de Ciencias Biol6gicas,
<br />Universidad Aut6noma de Nuevo Le6n
<br />Hematologic evaluation of two populations of 7ctalurus punctatus in the Pildn river
<br />Evaluaci6n hematol6gica de dos poblaciones de 7ctalurus punctatus en el Ri6 Pil6n ................. 17
<br />Holden, P.B.'; Filbert, R.B. BIO/WEST, Inc., Logan, Utah
<br />Distribution, abundance, and habitat of fishes in the Virgin River below Riverside, Nevada
<br />Distribuci6n, abundancia y habitat de Ins peces del Rio Virgin, abaio de Riverside, Nevada .......... 18
<br />Ruiz-Campos, G.; Alanis-Garcia, J.' Facultad de Ciencias, Universidad Aut6noma de Baja California, Apartado
<br />Postal 1653, Ensenada, B.C., Mexico
<br />Limnological characterization of the San Ignacio Oasis, Baia California Sur, Mexico, as a habitat of the
<br />endemic killifish, Fundulus lints (Vaillant)
<br />Caracterizaci6n Iimnoldgica del Oasis de San Ignacio, Baja California Sur, Mexico, comp tin habitat del
<br />ciprinoddntido end6mico, Fundulus litna (Vaillant) .................................. 18
<br />Rinne, J.N. USDA Forest Service, Flagstaff, Arizona
<br />Abiotic and biotic factors influencing the sustainability of the threatened Little Colorado spinedace,
<br />Lepidonteda vittata
<br />Factores abi6ticos y bi6ticos que influyen en el mantenimiento del pececito de espina del Pequeno Rio
<br />Colorado, Lepidontecla vittata, especie amena-rada ................................... 19
<br />Threloff, D. U.S. Department of the Interior, National Park Service, Death Valley National Monument
<br />Using a Global Positioning System (GPS) to map the distribution of the Cottonball Marsh pupfish
<br />Uso del Sistema de Posicionamiento Global (SPG) pars mapear distributi6n del Cottonball Marsh pupfish 19
<br />Mendoza V., E.'; Espinosa P., H. EMV - Museo de Zoologia, Facultad de Estudios Profesionales Zaragoza,
<br />UNAM. / HEP - Institute de Biologia, UNAM, Departamento de Zoologia
<br />Study of growth in Oncorhynchus ntykiss in Quechulac, Puebla
<br />Estudio del crecimiento de Onchorhynchus mykiss en Quechulac, Puebla ....................... 20
<br />Clarkson, R.W.; Gorman, Owen T.; Kubly, D.M.% Marsh, P.C.; Valdez, R.A. RWC and DMK - Arizona
<br />Game and Fish Dept., Phoenix, AZ; OTG - U.S. Fish and Wildlife Service, Flagstaff, AZ; PCM -
<br />Arizona State University, Tempe, AZ; RAV - BIO/WEST, Inc., Logan, UT
<br />Recommendations for operation of Glen Canyon Dam as a tool for management of native fishes
<br />Recomendaciones para operaci6n de presa Glen Canyon como herramienta para manejo de peces nativos 20
<br />Voting, D.A.; Fritz, K.J.; Garrett, G.P.*; Hubbs, C. DAY - Bureau of Reclamation, Upper Colorado Regional
<br />Office, Salt Lake City, UT; KJF - Bureau of Reclamation, Rio Grande Projects Office, El Paso, TX;
<br />GPG - Texas Parks and Wildlife Department, Heart of the Hills Research Station, Ingram, TX; CH -
<br />Department of Zoology, The University of Texas at Austin, Austin TX
<br />Status review of construction, native species introductions, and operation of an endangered species
<br />refugium channel, Phantom Lake Spring, Texas
<br />Revisidn del estado de construccion, introducci6n de especies nativas, y operaci6n de tin canal de refugio
<br />de especies en peligro, Phantom Lake Spring, Texas ................................. 22
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