The Distribution of the Hispid Cotton Rat in Kansas

The Influence of Habitat Quality upon Density of Cotton Rat Populations

“…In the cen tral part of the United States, §. hispidus recently has extended its geographic range northward in Kansas approximately 100 miles in the fourteen years from 1933 to 1947 (Cockrum, 1948). In eastern Kansas, the winter of 1948-49 was much more severe than several of those im mediately preceding it.…”

A comparison of temperature regulation in neonatal and adult hispid cotton rats, Sigmodon hispidus texianus, from southern Texas and northern Kansas

“…Cockrum (1948) presents a detailed summary of the northward advancement of this species within Kansas (Fig. 2).…”

“…The hispid cotton rat, Sigmodon hispidus texianus (Audubon and Bachman), is an herbivorous species which generally inhabits mes i c areas (Martin, 19^0;Fleharty and Mares, 1973 The northward dispersal of the hispid cotton rat into more cernpera te reg i oris has received cons iderable documentât ion (Sailey, 1902Hibbard, 1933, 1944Rinker, 1942b;Cockrum, 1948Cockrum, , 1952Hall, 1955;Jones, I960, 1964;Genoways and Schlitter, 1966;Liesveld and Fiala, 1977;Carey, 1978). Cockrum (1948) presents a detailed summary of the northward advancement of this species within Kansas (Fig.…”

“…indeed, captures of this species have been reported for extreme south-centra 1 (Genoways and Schlitter, 1966) and south-eastern (Liesveid and Fiala, 1977) Kansas (1902 and1904, respect ively). Map is adapted from Cockrum (1948). (Hoffmann and Jones, 1970;Fleharty et al, 1972).…”

“…It Cockrum (1948) and Genoways and Schlitter (1966). Lower rates of thermal conductance and metabolism would seem to be especially advantageous for survival of the harsher winters in the more northern ï'3"7 -M I-»-#-\ at-31 înfiîrafon fnaf fhe» stress imposed upon S_.…”