Standard weight (Ws) equations for four rare desert fishes

Alexander V. Didenko; Scott A. Bonar; William J. Matter

doi:10.1577/M02-119.1

Standard weight (W_s) equations for four rare desert fishes

Alexander V. Didenko, Scott A. Bonar, William J. Matter

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

Standard weight (W_s) equations have been used extensively to examine body condition in sport fishes. However, development of these equations for nongame fishes has only recently been emphasized. We used the regression-line-percentile technique to develop standard weight equations for four rare desert fishes: flannelmouth sucker Catostomus latipinnis, razorback sucker Xyrauchen texanus, roundtail chub Gila robusta, and humpback chub G. cypha. The W_s equation for flannelmouth suckers of 100-690 mm total length (TL) was developed from 17 populations: log₁₀W_s = -5.180 + 3.068 log₁₀TL. The W_s equation for razorback suckers of 110-885 mm TL was developed from 12 populations: log ₁₀W_s = -4.886 + 2.985 log₁₀TL. The W _s equation for roundtail chub of 100-525 mm TL was developed from 20 populations: log₁₀W_s = -5.065 + 3.015 log₁₀TL. The W_s equation for humpback chub of 120-495 mm TL was developed from 9 populations: log₁₀W_s = -5.278 + 3.096 log ₁₀TL. These equations meet criteria for acceptable standard weight indexes and can be used to calculate relative weight, an index of body condition.

Original language	English (US)
Pages (from-to)	697-703
Number of pages	7
Journal	North American Journal of Fisheries Management
Volume	24
Issue number	2
DOIs	https://doi.org/10.1577/M02-119.1
State	Published - May 2004
Externally published	Yes

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics
Aquatic Science
Ecology
Management, Monitoring, Policy and Law

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10.1577/M02-119.1

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@article{c322858b6aac4ed5a1410a3c20ff9cfa,

title = "Standard weight (Ws) equations for four rare desert fishes",

abstract = "Standard weight (Ws) equations have been used extensively to examine body condition in sport fishes. However, development of these equations for nongame fishes has only recently been emphasized. We used the regression-line-percentile technique to develop standard weight equations for four rare desert fishes: flannelmouth sucker Catostomus latipinnis, razorback sucker Xyrauchen texanus, roundtail chub Gila robusta, and humpback chub G. cypha. The Ws equation for flannelmouth suckers of 100-690 mm total length (TL) was developed from 17 populations: log10Ws = -5.180 + 3.068 log10TL. The Ws equation for razorback suckers of 110-885 mm TL was developed from 12 populations: log 10Ws = -4.886 + 2.985 log10TL. The W s equation for roundtail chub of 100-525 mm TL was developed from 20 populations: log10Ws = -5.065 + 3.015 log10TL. The Ws equation for humpback chub of 120-495 mm TL was developed from 9 populations: log10Ws = -5.278 + 3.096 log 10TL. These equations meet criteria for acceptable standard weight indexes and can be used to calculate relative weight, an index of body condition.",

author = "Didenko, {Alexander V.} and Bonar, {Scott A.} and Matter, {William J.}",

note = "Funding Information: We gratefully acknowledge those who contributed data sets and information used in this study: Robert Bettaso, Mark Brouder, William Persons, Jeremy Voeltz, David Ward, Chris Flaccus, Scott Bryan, and David Weedman from Arizona Game and Fish Department; Paul Marsh from Arizona State University; Paul Holden and T. Welker from the Bio-West Inc.; Chris Kitcheyan from U.S. Fish and Wildlife Service in Utah; R. Brunson and Ann McLuckie from Utah Division of Wildlife Resources; William Elmblad from Colorado Division of Wildlife; C. McAda and Dale Ryden from the Colorado River Fishery Project, U.S. Fish and Wildlife Service; and P. Cavalli from Wyoming Game and Fish Department. Research for this study was supported by the Arizona Cooperative Fish and Wildlife Research Unit of the U. S. Geological Survey and the Edmund S. Muskie and Freedom Support Act Graduate Fellowship Program of the Bureau of Educational and Cultural Affairs (ECA), U.S. Department of State under authority of the Fulbright–Hays Act of 1961 as amended, and administered by the Open Society Institute (OSI). The opinions expressed herein are the author{\textquoteright}s own and do not necessarily express the view of either ECA or OSI.",

year = "2004",

month = may,

doi = "10.1577/M02-119.1",

language = "English (US)",

volume = "24",

pages = "697--703",

journal = "North American Journal of Fisheries Management",

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T1 - Standard weight (Ws) equations for four rare desert fishes

AU - Didenko, Alexander V.

AU - Bonar, Scott A.

AU - Matter, William J.

N1 - Funding Information: We gratefully acknowledge those who contributed data sets and information used in this study: Robert Bettaso, Mark Brouder, William Persons, Jeremy Voeltz, David Ward, Chris Flaccus, Scott Bryan, and David Weedman from Arizona Game and Fish Department; Paul Marsh from Arizona State University; Paul Holden and T. Welker from the Bio-West Inc.; Chris Kitcheyan from U.S. Fish and Wildlife Service in Utah; R. Brunson and Ann McLuckie from Utah Division of Wildlife Resources; William Elmblad from Colorado Division of Wildlife; C. McAda and Dale Ryden from the Colorado River Fishery Project, U.S. Fish and Wildlife Service; and P. Cavalli from Wyoming Game and Fish Department. Research for this study was supported by the Arizona Cooperative Fish and Wildlife Research Unit of the U. S. Geological Survey and the Edmund S. Muskie and Freedom Support Act Graduate Fellowship Program of the Bureau of Educational and Cultural Affairs (ECA), U.S. Department of State under authority of the Fulbright–Hays Act of 1961 as amended, and administered by the Open Society Institute (OSI). The opinions expressed herein are the author’s own and do not necessarily express the view of either ECA or OSI.

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N2 - Standard weight (Ws) equations have been used extensively to examine body condition in sport fishes. However, development of these equations for nongame fishes has only recently been emphasized. We used the regression-line-percentile technique to develop standard weight equations for four rare desert fishes: flannelmouth sucker Catostomus latipinnis, razorback sucker Xyrauchen texanus, roundtail chub Gila robusta, and humpback chub G. cypha. The Ws equation for flannelmouth suckers of 100-690 mm total length (TL) was developed from 17 populations: log10Ws = -5.180 + 3.068 log10TL. The Ws equation for razorback suckers of 110-885 mm TL was developed from 12 populations: log 10Ws = -4.886 + 2.985 log10TL. The W s equation for roundtail chub of 100-525 mm TL was developed from 20 populations: log10Ws = -5.065 + 3.015 log10TL. The Ws equation for humpback chub of 120-495 mm TL was developed from 9 populations: log10Ws = -5.278 + 3.096 log 10TL. These equations meet criteria for acceptable standard weight indexes and can be used to calculate relative weight, an index of body condition.

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Standard weight (W_s) equations for four rare desert fishes

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