Other researchers had guessed that grasshopper mice might shun bark scorpions, or somehow dodge their stings.
House mice licked their injured paws for about four minutes, while grasshopper mice licked for just a few seconds.
But when the researchers dissected pain-sensing nerves from grasshopper mice and added venom, one type of sodium channel behaved differently and stopped the usual flow of sodium.
For the three most-commonly captured species, North American deermice, plains harvest mice, and northern grasshopper mice, individual estimates of relative abundance were calculated.
Northern grasshopper mice were more abundant (F = 4.
Greater abundances of beetles and grasshoppers on active colonies might provide an incentive for northern grasshopper mice to use these areas.
Northern grasshopper mice also are known to use burrows of other species for shelter and nesting sites (Agnew, 1983; Agnew et al.
Grasshopper mice, kangaroo rats and deer mice were the most commonly captured rodents on the shrub-grassland grid and showed little seasonal variation in proportional abundance on this site (Table 1).
Conversely, grasshopper mice inhabit both open prairie and shrub-dominated areas, but are uncommon in dense vegetation, such as that found on our floodplain trapping site.
The frequency of harvest mice, deer mice and voles in owl diets and the relative scarcity of grasshopper mice indicate that owls forage intensively in or near areas with dense vegetation.
leucopus), 66 Ord's kangaroo rats (Dipodomys ordii), 65 northern grasshopper mice
(Onychomys leucogaster), 38 northern rock mice (P.
Mammalogist Lester Flake found vertebrate tissue, primarily from other mice, in the stomachs of northern grasshopper mice from southeastern Colorado, as well as feathers and lizard skin.
In the wild, grasshopper mice probably never attack prey as large as a cotton rat and seldom take on even small mammals.
Frank began studying grasshopper mice as a graduate student at Cornell University because she was interested in their breeding habits.
Captive grasshopper mice mark territories with a series of dust baths, apparently impregnating the ground with scent from anal oil glands.