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TREATED VERSUS NEW TRAPS: DOES CHRONIC APPLICATION OF DISINFECTANT TO LIVE TRAPS REDUCE TRAPPABILITY OF RODENTS?

Glennis A. Kaufman, Dawn M. Kaufman and Donald W. Kaufman
The Southwestern Naturalist
Vol. 56, No. 2 (JUNE 2011), pp. 224-230
Stable URL: http://www.jstor.org/stable/23028170
Page Count: 7
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
TREATED VERSUS NEW TRAPS: DOES CHRONIC APPLICATION OF DISINFECTANT TO LIVE TRAPS REDUCE TRAPPABILITY OF RODENTS?
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Abstract

We examined whether chronic exposure of traps to disinfectant reduced trappability of rodents as compared to new traps. We tested whether rodents initially chose between treated (disinfected) and new traps and if total number of captures differed between these treatments. Disinfectant did not reduce catchability of traps; rodents actually preferred treated traps. In initial pairwise choice tests, rodents overall and the predominant North American deermouse, Peromyscus maniculatus, chose significantly more treated than new traps, although this difference disappeared as time of exposure of new traps in the environment increased. Total captures of small mammals and North American deermice did not differ between treated and new traps. Therefore, treated traps were never avoided; this has important implications in general, but especially for long-term studies where censuses are conducted using pre-disinfectant and post-disinfectant protocols. Investigamos si la exposición crónica de las trampas al desinfectante redujo la probabilidad de atrapar a roedores en comparación a trampas nuevas. Hicimos pruebas para ver si los roedores inicialmente escogieron entre las trampas tratadas (desinfectadas) o las nuevas y si el número total de capturas difirió en cuanto a los dos tipos de trampas. El desinfectante no redujo la eficacia de las trampas y, en realidad, los roedores prefirieron las trampas desinfectadas. En pruebas iniciales en que seleccionaron una trampa u otra, los roedores en general, y la especie predominante, Peromyscus maniculatus, escogieron significativamente más trampas tratadas que las nuevas, aunque esta diferencia desapareció cuando aumentó el tiempo de estar expuestas las trampas nuevas al medio ambiente del campo. Entre las trampas tratadas y las nuevas no hubo diferencia en el número de capturas ni de mamíferos pequeños ni de P. maniculatus. Así que los roedores no evitaron las trampas desinfectadas. Esto tiene implicaciones importantes en general, pero especialmente para investigaciones a largo plazo en que muestreos se llevan a cabo usando protocolos de pre-desinfectantes tanto como post-desinfectantes.

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