<br />"
<br />
<br />870
<br />
<br />ment, and mortality. Unfortunately, the need to
<br />sacrifice fish to extract otoliths is an obvious draw-
<br />back of this method, especially when working with
<br />a species of special concern like roundtail chub.
<br />
<br />Acknowledgments
<br />
<br />I would like to thank lody Walters for his valu-
<br />able input into study design, Mike Childs for
<br />spawning and rearing fish, and Diana Rogers and
<br />Lorraine A venetti for their valuable field and lab-
<br />oratory assistance. I would also like to thank Scott
<br />Bonar, Scott Bryan, Bill Persons, and three anon-
<br />ymous reviewers for providing suggestions that
<br />improved the manuscript. Funding was provided
<br />by the Sportfish Restoration fund administered
<br />through the Arizona Game and Fish Department
<br />(Project F-4-R). Reference to trade names does not
<br />imply endorsement by the U.S. Government.
<br />
<br />References
<br />
<br />
<br />Barrett, P. I., and O. E. Maughan. 1995. Spatial habitat
<br />selection of roundtail chub (Gila robusta), in two
<br />central Arizona streams. Southwestern Naturalist
<br />40:301-307.
<br />Bestgen, K. R. 1985. Distribution, biology, and status
<br />of the roundtail chub Gila robusta, in the Gila River
<br />basin, New Mexico. Master's thesis. Colorado State
<br />University, Fort Collins.
<br />Bestgen, K. R., D. A. Hendrickson, D. M. Kubly, and
<br />D. L. Propst. 1987. Movements and growth of fishes
<br />in the Gila River drainage, Arizona and New Mex-
<br />ico. Southwestern Naturalist 32:351-356.
<br />Bestgen, K. R., and D. L. Propst. 1989. Distribution,
<br />status, and notes on the ecology of Gila robusta
<br />(Cyprinidae) in the Gila River drainage, New Mex-
<br />ico. Southwestern Naturalist 34:402-412.
<br />Brouder, M. I. 1999. Relationship between length of
<br />roundtail chub and infection intensity of Asian fish
<br />tapeworm Bothriocephalus acheilognathi. Iournal of
<br />Aquatic Animal Health 11:302-304.
<br />Brouder, M. I. 2001. Effects of flooding on recruitment
<br />of roundtail chub Gila robusta, in a southwestern
<br />river. Southwestern Naturalist 46:302-310.
<br />Brouder, M. I., and T. L. Hoffnagle. 1997. Distribution
<br />and prevalence of the Asian fish tapeworm Both-
<br />riocephalus acheilognathi, in the Colorado River
<br />and tributaries, Grand Canyon, Arizona, including
<br />two new host records. Iournal of the Helminthol-
<br />ogical Society of Washington 64:219-226.
<br />Campana, S. E. 1990. How reliable are growth back-
<br />calculations based on otoliths? Canadian Iournal of
<br />Fisheries and Aquatic Sciences 47:2219-2227.
<br />Campana, S. E. 2001. Accuracy, precision, and quality
<br />control in age determination, including a review of
<br />the use and abuse of age validation methods. Iournal
<br />of Fish Biology 59: 197-242.
<br />Campana, S. E., and C. M. Iones. 1992. Analysis of
<br />otolith microstructure data. Canadian Special Pub-
<br />
<br />BROUDER
<br />
<br />Iication of Fisheries and Aquatic Sciences 117 :73-
<br />100.
<br />Chang, W. Y. B. 1982. A statistical method for evalu-
<br />ating the reproducibility of age determination. Ca-
<br />nadian Iournal of Fisheries and Aquatic Sciences
<br />39:1208-1210.
<br />Douglas, M. E., W. L. Minckley, and H. M. Tyus. 1989.
<br />Qualitative characters, identification of Colorado
<br />River chubs (Cyprinidae: genus Gila) and the "art
<br />of seeing well." Copeia 1989:653-662.
<br />Douglas, M. E., P. C. Marsh, and W. L.Minckley. 1994.
<br />Indigenous fishes of western North America and the
<br />hypothesis of competitive displacement: Medaful-
<br />gida (Cyprinidae) as a case study. Copeia 1994:9-
<br />19.
<br />Douglas, M. E., R. R. Miller, and W. L. Minckley. 1998.
<br />Multivariate discrimination of Colorado Plateau
<br />Gila spp.: the "art of seeing well" revisited. Trans-
<br />actions of the American Fisheries Society 127: 163-
<br />173.
<br />Essig, R. I., and C. F. Cole. 1986. Methods of estimating
<br />larval fish mortality from daily increments in oto-
<br />liths. Transactions of the American Fisheries So-
<br />ciety 115:34-40.
<br />Hoffman, G. L., and G. Shubert. 1984. Some parasites
<br />of exotic fishes. Pages 233-261 in W. R. Courtney,
<br />Ir., and I. R. Stauffer, Ir., editors. Distribution, bi-
<br />ology, and management of exotic fishes. Iohns Hop-
<br />kins University Press, Baltimore, Maryland.
<br />Holden, P. B., and C. B. Stalnaker. 1970. Systematic
<br />studies of the cyprinid genus Gila in the upper Col-
<br />orado River basin. Copeia 1970:409-420.
<br />Holden, P. 8., and C. B. Stalnaker. 1975. Distribution
<br />and abundance of mainstream fishes of the middle
<br />and upper Colorado River basins, 1967-1973.
<br />Transactions of the American Fisheries Society 104:
<br />217-231.
<br />Isley, I. I. and R. L. Noble. 1987. Use of daily otolith
<br />rings to interpret development of length distribu-
<br />tions of young largemouth bass. Pages 475-481 in
<br />R. C. Summerfelt and G. E. Hall, editors. Age and
<br />growth of fish. Iowa State University Press, Ames.
<br />Kaeding, L. R., B. D. Burdick, P. A. Schrader, and C.
<br />W. McAda. 1990. Temporal and spatial relations
<br />between the spawning of humpback chub and
<br />roundtail chub in the upper Colorado River. Trans-
<br />actions of the American Fisheries Society 119: 135-
<br />144.
<br />Karp, C. A., and H. M. Tyus. 1990. Humpback chub
<br />(Gila cypha) in the Yampa and Green rivers, Di-
<br />nosaur National Monument, with observations on
<br />round tail chub (G. robusta) and other sympatric
<br />fishes. Great Basin Naturalist 50:257-264.
<br />McElroy, D. M., and M. E. Douglas. 1995. Patterns of
<br />morphological variation among endangered popu-
<br />lations of Gila robusta and Gila cypha (Teleostei:
<br />Cyprinidae) in the upper Colorado River basin.
<br />Copeia 1995:636-649.
<br />Meffe, G. K. 1984. Effects of abiotic disturbance on
<br />coexistence of predator-prey fish species. Ecology
<br />65:1525-1534.
<br />Meffe, G. K. 1985. Predation and species replacement
<br />
<br />in American s
<br />Southwestern ]\
<br />Miller, R. R. 1961.
<br />the American ~
<br />Academy of Scj
<br />Miller, R. R., I. D.
<br />Extinctions in l'
<br />century. Fisher
<br />Miller, S. I., and T.
<br />otoliths of you
<br />actions of the A
<br />530.
<br />Minckley, W. L. 19~
<br />and Fish Depal
<br />Minck1ey, W. L., an
<br />fishes and the e
<br />ence 159: 1424
<br />Minckley, W. L., a
<br />selection by fle
<br />the arid Ameri
<br />I. Mathews an
<br />and evolution a
<br />fishes. Univers
<br />Minckley, W. L., a
<br />and extinction
<br />in geologic tirr
<br />I. E. Deacon, I
<br />tive fish mana
<br />versity of Ari2
<br />Mpoame, M., and.
<br />fishes native t
<br />western Natur.
<br />Muth, R. T., C. M
<br />Culture of rou'
<br />through the la
<br />30: 152-154.
<br />Neve, L. L. 1976.
<br />Gila robusta
<br />
<br />
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