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TABLE OF CONTENTS
<br />Bowes,N. ; Crowl,T.A. (NB and TAC - Ecology Center and Department of Fisheries and Wildlife. Utah State University, Logan. UT)
<br />The role of native and introduced fish species on high mountain, desert stream communities / El
<br />papel de las especies nativas a introducidas en las comunidades de arroyos des6rticos de altas
<br />montaiias ......................................................................... 52
<br />Velasco,A.L. (Department of Zoology, Arizona State University, Tempe, AZ 85287-1501)
<br />Variance in fish populations of Aravaipa Creek, Arizona / Varianza en poblaciones de peces de
<br />Aravaipa Creek, Arizona ........................................................... 53
<br />Gorman,Owen T.`; Sealsjohn M. (U.S. Fish and Wildlife Service, P.O. Box 338, Flagstaff. AZ 86002-0338)
<br />Habitat use by the endangered humpback chub (Gila cypha) in the Little Colorado River, Arizona
<br />near Grand Canyon / Uso del habitat por el charal jorobado (Gila cypha), especie ep peligro de
<br />extinci6n, en el Little Colorado River (Pequeno Rio Colorado), Arizona, cerca del Gran Can6n . 53
<br />Seals,John M.*; Gorman,Owen T. (U.S. Fish and Wildlife Service, P.O. Box 338, Flagstaff, AZ 86002-0338)
<br />Habitat use by speckled dace (Rhinichthys osculus), bluehead sucker (Catostomus discobolus), and
<br />flannelmouth sucker (Catostomus latipinnis) in the Little Colorado River, Arizona near Grand
<br />Canyon / Uso del habitat por speckled dace (Rhinichthys osculus), bluehead sucker (Catostomus
<br />discobolus), y flannelmouth sucker (Catostomus latipinnis) en el Pequeno Rio Colorado (Little
<br />Colorado River), Arizona cerca del Gran Can6n ........................................ 54
<br />Allan,N.L.s; Otis,E.O.; Weiss,S.J.; Maughan,O.E. (Arizona Cooperative Fish and Wildlife Research Unit, University of Arizona, Tucson, Arizona)
<br />Biotic and abiotic factors affecting distribution of native fishes in streams tributary to the Colorado
<br />River in Grand Canyon / Factores bi6ticos y abi6ticos que afectan la distribution de peces nativos
<br />en arroyos afluentes del Rio Colorado en Gran Can6n ................................... 55
<br />Marsh,P.C: ; Douglas,M.E. (PCM - Arizona State University, Center for Environmental Studies, Tempe, AZ; MED - Arizona State University, Department of Zoology
<br />and Museum, Tempe, AZ.)
<br />Humpback chub as food of non-native fishes in the Little Colorado River / El charal jorobado como
<br />alimento de peces no nativos en el Pequeno Rio Colorado ................................. 55
<br />Converse,Y.K. (YKC - Fish and Wildlife Department, Utah State University, Logan, UT)
<br />Use of geomorphology to predict subadult humpback chub distribution in the Colorado River of
<br />Grand Canyon / Uso de la geomorfologia para predecir la distribuci6n de subadultos del charal
<br />jorobado en el Rio Colorado en el Gran Can6n ......................................... 56
<br />Wasowlcz,A.'; V aldez,R.A. (AW, RAV - BKNWEST, Inc. 1063 W. t4W N. Logan, UT)
<br />Historic and present distribution and abundance of humpback chub in Grand Canyon, Arizona /
<br />Distribucion y abundancia actual a hist6rica del charal jorobado en el Gran Can6n, Arizona ... 57
<br />Hoagstrom,Christopher W. (U. S. Fish and Wildlife Service, New Mexico Fishery Resources Office, Albuquerque, NM)
<br />Status of estuarine fishes inhabiting the Pecos River / Estatus de los peces estuarinos que habitan el
<br />Rio Pecos ......................................................................... 57
<br />Lang,B.K. ; Hobbes,A.L.; Propst,D.L. (New Mexico Department of Game and Fish, Santa Fe, NM)
<br />Distribution, abundance and food habits of piscivorous fishes inhabiting the Pecos River between
<br />Sumner Dam and Brantley Reservoir, New Mexico / Distribution, abundancia y hibitos
<br />alimenticios de peces piscivoros que habitan el Rio Pecos, entre la presa Sumner y el reservorio
<br />Brantley, New Mexico .............................................................. 58
<br />Edwards,R.J. (Department of Biology, University of Texas-Pan American, Edinburg, TX)
<br />The use of fishes as indicators of environmental water quality in the lower Rio Grande (Rio Bravo
<br />del Norte), Texas and M6xico / Los peces como indicadores ambientales de la calidad del agua del
<br />bajo Rio Grande (Rio Bravo del Norte), de Texas y M6xico ............................... 59
<br />Gido,K.B. ; Propst,D.L. (KBG - Museum of Southwestern Biology, University of New Mexico. Albuquerque, NM; DLP - New Mexico Department of Game and Fish,
<br />Santa Fe, NM)
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