Calculating Economic Injury Levels for Stable Flies (Diptera: Muscidae) on Feeder Heifers | Zendy

Michael A. Catangui | Zendy; John Campbell | Zendy; Gustave D. Thomas | Zendy; David J. Boxler | Zendy

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Calculating Economic Injury Levels for Stable Flies (Diptera: Muscidae) on Feeder Heifers

Author(s) -

Michael A. Catangui,

John Campbell,

Gustave D. Thomas,

David J. Boxler

Publication year - 1997

Publication title -

journal of economic entomology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.818

H-Index - 101

eISSN - 1938-291X

pISSN - 0022-0493

DOI - 10.1093/jee/90.1.6

Subject(s) - stomoxys , muscidae , biology , feedlot , stable fly , population , musca , regression analysis , statistics , zoology , toxicology , mathematics , ecology , larva , demography , sociology

A procedure for calculating the economic injury levels for stable flies, Stomoxys calcitrans (L.), on feeder heifers was developed from reduction of average daily weight gain-stable fly population level data in 8 independent replicated experiments over 17 yr. A negative exponential was fitted to the data using nonlinear regression. Regression coefficients were then used to derive a simple predictive equation for calculating the economic injury level in relation to cost of controlling stable flies in the feedlot, and the market value of heifers. Examples for calculating the economic injury level under practical feedlot situations are presented. Also included are recommendations for a simple random sampling design for stable flies in feedlots.

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