Statistical Properties of the Relative Weight (W_r) Index and an Alternative Procedure for Testing W_r Differences between Groups

References

• Anderson , D. R. 2001 . The need to get the basics right in wildlife field studies . Wildlife Society Bulletin , 29 : 1294 – 1297 .
   Web of Science ®Google Scholar
• Anderson , R. O. and Neumann , R. M. 1996 . “ Length, weight, and associated structural indices ” . In Fisheries techniques, , 2nd edition Edited by: Murphy , B. R. and Willis , D. W. 447 – 482 . Bethesda, Maryland : American Fisheries Society .
   Google Scholar
• Blackwell , B. G. , Brown , M. L. and Willis , D. W. 2000 . Relative weight (W r ) status and current use in fisheries assessment and management . Reviews in Fisheries Science , 8 : 1 – 44 .
   Google Scholar
• Bolger , T. and Connolly , P. L. 1989 . The selection of suitable indices for the measurement and analysis of fish condition . Journal of Fish Biology , 34 : 171 – 182 .
   Web of Science ®Google Scholar
• Carroll , S. S. and Pearson , D. L. 2000 . Detecting and modeling spatial and temporal dependence in conservation biology . Conservation Biology , 14 : 1893 – 1897 .
   PubMed Web of Science ®Google Scholar
• Cone , R. S. 1989 . The need to reconsider the use of condition indices in fishery science . Transactions of the American Fisheries Society , 118 : 510 – 514 .
   Web of Science ®Google Scholar
• Efron , B. 1979 . Bootstrap methods: another look at the jackknife . Annals of Statistics , 7 : 1 – 26 .
   Web of Science ®Google Scholar
• Gabelhouse , D. W Jr. 1984 . A length-categorization system to assess fish stocks . North American Journal of Fisheries Management , 4 : 273 – 285 .
   Google Scholar
• Henson , J. C. 1991 . Quantitative description and development of a species-specific standard growth form for largemouth bass with application to the relative weight (W _r ) index Master's thesis. Texas A&M University, College Station
   Google Scholar
• Hoel , P. G. , Port. , S. C. and Stone , C. J. 1971 . Introduction to probability theory Boston : Houghton Mifflin .
   Google Scholar
• Hollander , M. and Wolfe , D. A. 1999 . Nonparametric statistical methods, , 2nd edition New York : Wiley .
   Google Scholar
• Hurlbert , S. H. 1978 . The measurement of niche overlap and some relatives . Ecology , 59 : 67 – 77 .
   Web of Science ®Google Scholar
• Hyatt , M. W. and Hubert , W. A. 2001 . Statistical properties of relative weight distributions of four salmonid species and their sampling implications . North American Journal of Fisheries Management , 21 : 666 – 670 .
   Web of Science ®Google Scholar
• Jakob , E. M. , Marshall , S. D. and Uetz , G. W. 1996 . Estimating fitness: a comparison of body condition indices . Oikos , 77 : 61 – 67 .
   Web of Science ®Google Scholar
• Kendall , M. G. and Stuart , A. 1969 . The advanced theory of statistics, , 3rd edition Vol. 1 , London : Griffin .
   Google Scholar
• Kesteven , G. L. 1947 . On the ponderal index, or condition factor, as employed in fisheries biology . Ecology , 28 : 78 – 80 .
   Web of Science ®Google Scholar
• Le Cren , E. D. 1951 . The length-weight relationship and seasonal cycle in gonad weight and condition in the perch (Perca fluviatilis) . Journal of Animal Ecology , 20 : 201 – 219 .
   Web of Science ®Google Scholar
• Legendre , P. 1993 . Spatial autocorrelation: trouble or new paradigm? . Ecology , 74 : 1659 – 1673 .
   Web of Science ®Google Scholar
• McCullagh , P. M. and Nelder , J. A. 1989 . Generalized linear models, , 2nd edition New York : Chapman and Hall .
   Google Scholar
• Murphy , B. R. , Brown , M. L. and Springer , T. A. 1990 . Evaluation of the relative weight (W r ) index, with new applications to walleye . North American Journal of Fisheries Management , 10 : 85 – 97 .
   Google Scholar
• Murphy , B. R. , Willis , D. W. and Springer , T. A. 1991 . The relative weight index in fisheries management: status and needs . Fisheries , 16 ( 2 ) : 30 – 38 .
   Web of Science ®Google Scholar
• Myers , R. H. 1990 . Classical and modern regression with applications, , 2nd edition Boston : Duxbury Press .
   Google Scholar
• Neter , J. , Kutner , M. H. , Nachtsheim , C. J. and Wasserman , W. 1996 . Applied linear statistical models, , 4th edition Chicago : Irwin .
   Google Scholar
• Neumann , R. M. and Murphy , B. R. 1991 . Evaluation of the relative weight (W r ) index for assessment of white crappie and black crappie populations . North American Journal of Fisheries Management , 11 : 543 – 555 .
   Google Scholar
• Neumann , R. M. and Willis , D. W. 1994 . Relative weight as a condition index for muskellunge . Journal of Freshwater Ecology , 9 : 13 – 18 .
   Web of Science ®Google Scholar
• Packard , G. C. and Boardman , T. J. 1988 . The misuse of ratios, indices, and percentages in ecophysiological research . Physiological Zoology , 61 : 1 – 9 .
   Google Scholar
• Quinn , T. J, I. I. and Deriso , R. B. 1999 . Quantitative fish dynamics New York : Oxford University Press .
   Google Scholar
• SAS Institute. 1999 . SAS system for Windows, version 8.2 Cary, North Carolina : SAS Institute .
   Google Scholar
• Seaman , J. W Jr. and Jaeger , R. G. 1990 . Statisticae dogmaticae: a critical essay on statistical practices in ecology . Herpetologica , 46 : 337 – 346 .
   Web of Science ®Google Scholar
• Springer , T. A. , Murphy , B. R. , Gutreuter , S. , Anderson , R. O. , Miranda , L. E. , Jackson , D. C. and Cone , R. S. 1990 . Properties of relative weight and other condition indices . Transactions of the American Fisheries Society , 119 : 1048 – 1058 .
   Web of Science ®Google Scholar
• Wege , G. J. and Anderson , R. O. 1978 . “ Relative weight (W r ): a new index of condition for largemouth bass ” . In New approaches to the management of small impoundments , North Central Division, Special Publication 5 Edited by: Novinger , G. D. and Dillard , J. G. 79 – 91 . Bethesda, Maryland : American Fisheries Society .
   Google Scholar
• Willis , D. W. 1989 . Proposed standard length-weight equation for northern pike . North American Journal of Fisheries Management , 9 : 203 – 208 .
   Google Scholar
• Zhou , S. 2002 . Estimating parameters of derived random variables: comparison of the delta and parametric bootstrap methods . Transactions of the American Fisheries Society , 131 : 667 – 675 .
   Web of Science ®Google Scholar