Salt marsh harvest mouse (Reithrodontomys raviventris) Scientific classification; Kingdom: Animalia: Phylum: Chordata: Class: Mammalia : Order: Rodentia: Family: Cricetidae: Subfamily: Neotominae: Tribe: Reithrodontomyini: Genus: Reithrodontomys Giglioli, 1873: Species See text Reithrodontomys is the genus of groove-toothed New World harvest mice.

The salt marsh harvest mouse (Reithrodontomys raviventris), also known as the red-bellied harvest mouse and sometimes called the saltmarsh harvest mouse, is an endangered rodent endemic to the San Francisco Bay Area salt marshes in CA. Adult salt marsh harvest mice are 118-175 millimeters in length and weigh between 8 and 12

[2] There are two distinct subspecies, both endangered and listed together on federal and state endangered species lists.. Geographic Range.

DESCRIPTION OF SPECIES: The scientific name Reithrodontomys raviventris means “grooved-toothed mouse with a red belly" (Shellhammer, 1998). Biologists call salt marsh harvest mice Reithrodontomys raviventris. They are in the Cricetidae family, which includes field mice, lemmings, muskrats, hamsters and gerbils. The northern subspecies R. r. halicoetes is found on Marin Peninsula, through Petaluma, Napa, and Suisun Bay marshes, and in northern Contra Costa Co. 48 relations. The salt marsh harvest mouse (Reithrodontomys raviventris) is a rodent in the family Muridae (subfamily Sigmodontinae). The salt marsh harvest mouse (SMHM, Reithrodontomys raviventris) is a state and federally listed endangered species that is only found in salt and brackish marshes of the Greater San Francisco Bay. Two species of Reithrodontomys raviventris are recognized. Salt-marsh harvest mice (Reithrodontomys raviventris), are limited to saltwater and brackish marshes bordering the San Francisco Bay area.Because these marshes have been altered by humans, throught draining, diking, and similar opperations, the distribution of this species is disjunct.

Both subspecies occur with the closely-related, ubiquitous and abundant western harvest mouse, at upper edges of marshes, and in marginal areas.

Niche: Distribution and abundance dependent on availability of dense pickleweed salt marsh. They also flood with pools of rainwater, but they are protected from the highest tides of the year and many of their harvest mouse residents survive. Both may be found in pickleweed, though R. raviventris excludes or replaces R. megalotis in denser stands. A salt marsh harvest mouse is about the size of one’s thumb, largely nocturnal, and lives among the reddish pickle weed in the low tidal marsh—an area frequently subject to tidal inundation.

Species. The name means "groove toothed mouse with a red belly." The salt marsh harvest mouse (Reithrodontomys raviventris), also known as the red-bellied harvest mouse and sometimes called the saltmarsh harvest mouse, is an endangered rodent endemic to the San Francisco Bay Area salt marshes in California.
As described in the Draft Recovery Plan for Tidal Marsh Ecosystems of Northern and Central California (Draft Recovery Plan) (Service 2010), there are two subspecies of salt marsh harvest mice: the northern salt marsh harvest mouse (Reithrodontomys raviventris … Come here to learn more about the endangered salt marsh harvest mouse (Reithrodontomys raviventris)!

Family: Species: Mammalia: Rodentia: Cricetidae: Reithrodontomys raviventris: Salt-marsh Harvest Mouse Distribution, Abundance, and Seasonality.

The winter diet of this rodent generally consists of various grasses. Scientific names are in Latin or Greek.
Salt marsh harvest mice still survive in some of these, non-tidal, seasonal wetlands. The Salt marsh harvest mice are primary herbivores, they generally feed upon pickle weed and other salt marsh plants, supplementing this diet with occasional seeds and insects.

Salt marsh harvest mice are adapted to live in this challenging environment, as they can swim short distances and consume food and water with a high salt content. These areas are important because they provide pickleweed and other plants necessary for the survival of the mouse. The western harvest mouse is considered to be the progenitor of the salt marsh harvest mouse (Fisler 1965).

Found only in saline emergent wetlands of San Francisco Bay and its tributaries. Many don't survive.


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