Prairie Dog Blog

prairie dog biology research

What exactly are prairie dogs anyway? December 27, 2010

Filed under: Uncategorized — lorensackett @ 16:05

Prairie dogs are a group of fossorial (burrowing) ground squirrels (family Sciuridae) that live in large colonies.  They are most closely related to marmots and other ground squirrels, and they are split into five species:  black-tailed prairie dogs (the most widespread and social species; Cynomys ludovicianus), Mexican prairie dogs (found in only a small region in Mexico; C. mexicanus), white-tailed prairie dogs (C. leucurus), Gunnison’s prairie dogs (C. gunnisoni), and Utah prairie dogs (C. parvidens).

Juvenile black-tailed prairie dog ready to submerge into its burrow if I get any closer

Adult white-tailed prairie dog, with painted markings for individual recognition, looking up towards our observation tower from outside its burrow

Prairie dogs are commonly, but mistakenly, referred to as gophers, which are mouse-like rodents in the family Geomyidae (e.g., see http://en.wikipedia.org/wiki/File:Geomys_bursarius.jpg).  Pocket gophers are more highly fossorial than prairie dogs, and spend almost all of their time underground.  They are also solitary, and males interact with females only during mating.

In contrast, prairie dogs are highly social.  They can live in colonies with thousands of individuals, and prior to human eradication, estimates of some black-tailed prairie dog colony sizes were in the millions (Hoogland 2006).   Prairie dogs spend much of their time above ground foraging for food (primarily grasses) and scanning for predators.  Because they are numerous and conspicuous, they are an important food source for black-footed ferrets, hawks, coyotes, rattlesnakes, badgers and other predators.

In addition to their importance as a food item for predators, prairie dogs aerate soil and increase plant diversity and growth rates by bringing nutrients to the surface through their burrowing activity.  They also provide habitat for other rodents, rabbits, amphibians and burrowing owls, which share their burrows.  Because of their pronounced effects on grassland ecosystems and other species, prairie dogs have been dubbed “keystone species” (Miller et al. 1994).  Several species are listed or have been proposed for listing as endangered species.

Gunnison's prairie dog, smaller and darker than a white-tailed prairie dog, but also with a white-tipped tail

References:

Hoogland, J.L. 2006.  Conservation of the black-tailed prairie dog: saving North America’s western grasslands.  Island Press, Washington D.C.

Miller, B., G. Ceballos and R. Reading 1994.  The prairie dog and biotic diversity.  Conservation Biology 8: 863-894.

Advertisements
 

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s