Natural History of the Prairie Vole (Mammalian Genus Microtus): [KU. Vol. 1 No. 7]Jameson, E. W. (Everett Williams)
Science
Natural History of the Prairie Vole (Mammalian Genus Microtus): [KU. Vol. 1 No. 7]
Jameson, E. W. (Everett Williams)
Microtus
The molting processes of juveniles and subadults follow the same
pattern. The first area of molting is in the pectoral region. The molt
patch extends caudad toward the tail and cephalad toward the chin. New
pelage separates this area of active molt into two strips on the fourth
or fifth day. By this time each strip has spread laterad to the legs and
sides, and is 10 to 20 mm. wide. Ultimately each strip unites with its
opposite, usually at the center of the dorsum. This area of molt then
spreads cephalad and caudad. Fourteen to fifteen days after the
beginning of the molt, the entire dorsum is in process of being covered
with new pelage. Shortly before the completion of the molt, the dorsal
area of molt divides into two patches, one on the rump and one on the
nape. The areas last to be covered with new pelage are the crown and
that between the ears and the eyes. A slight variation in the above
process occurred in some specimens in which the lateral strips joined
immediately cephalad of the tail instead of at the center of the dorsum.
The entire process takes approximately three weeks.
Large voles (45 grams or more) grow hair in irregular patches that
measured 5 to 15 mm. In these large voles the molt is accomplished
slowly and does not cover large areas of the body at any one time. The
small areas of molt are visible for 7 to 10 days, and were found on
approximately three quarters of the large voles examined.
FOOD AND HABITAT
The diet of the prairie vole reflects both its environment and its
choice of food. The plants eaten are usually green and succulent, but
some dry, hard seeds and small stems of woody plants are also eaten. The
vegetation, which supplies the food for the vole, is important as cover
or nesting material. For this reason food and habitat are discussed
together.
TYPES OF COVER
Prairie voles inhabit areas where the dominant plants in summer are
clover or grasses or both. The lawn on the campus at the University of
Kansas consists mostly of several kinds of grasses, but in some places
alfalfa (_Medicago sativa_) replaces clover (_Trifolium_ sp.), and in
other places sedges (_Scirpus_ spp.) are found in addition to the
grasses. The grass is short; it is mowed to a length of 4 to 6 inches.
Bluegrass (_Poa pratensis_) and crabgrass (_Digitaria ischaemum_) form
most of the sod. Bluejoint (_Andropogon furcatus_) is common in a
sparsely wooded part of the campus, an area which has many voles.
Foxtail (_Setaria lutescens_ and _S. viridis_) and prairie threeawn
(_Aristida oligantha_) are also common on the lawn, but these become dry
in late summer, and at that time supply neither food nor cover for the
voles. The voles make well-beaten depressions in the sod, and the grass
arches over them to form canopies.
Public-domain text, read in full here on John Shaqi.
Reviews
Reviews
No reviews yet
Be the first to share your thoughts on this work.
Join the Discussion
Join the discussion
Sign in to leave a comment or review.
Sign InorCreate an account