Abstract
-We examined the influence of four experimental brush treatments on relative population density, reproduction and body condition of eastern woodrat (Neotomafioridana) populations on Cross Timbers rangeland in Oklahoma. Experimental brush treatments were tebuthiuron and triclopyr herbicides, applied with and without annual prescribed burning. Untreated reference sites also were evaluated. A total of 333 eastern woodrats were collected from March 1986 through December 1988. Relative population density varied among seasons and experimental treatments. Maximum summer peaks in density were observed each year on triclopyr treatments. Density was similar between populations on tebuthiuron treatments and reference sites. Reproductive activity of females varied among seasons but not among experimental treatments; peaks occurred in spring and autumn 1986 and summer 1987. Percentage of reproductively active males, as evidenced by spermatogenesis, was less than expected in winter. Mean body weights and condition scores were highest in autumn and spring but were not influenced by experimental treatments. Mean stomach content weight did not differ among seasons or experimental brush treatments.
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