6-407: Scapteromys aquaticus Scapteromys meridionalis Scapteromys tumidus Scapteromys is a genus of South American rodents in the tribe Akodontini of family Cricetidae . Three species are known, found in northern Argentina , southern Brazil , Paraguay and Uruguay . They are as follows: Species are semiaquatic , living in and near marshes and other bodies of water. They reach
12-534: A body length of 15 to 20 cm and a tail length of 13–17 cm, and weigh 110-200 g. Fur color is dark gray on top and light gray on the underside. They are primarily crepuscular and nocturnal . Their diet consists mainly of insects ; they also consume other invertebrates and plant material. The three species differ in karyotype , with aquaticus having 2n = 32, tumidus 2n = 24 and meridionalis 2n = 34/36. [REDACTED] [REDACTED] [REDACTED] [REDACTED] This Sigmodontinae article
18-526: Is a stub . You can help Misplaced Pages by expanding it . Scapteromys aquaticus The Argentine swamp rat ( Scapteromys aquaticus ) is a semiaquatic rodent species from South America . It is found in northeastern Argentina and Paraguay , where it lives in freshwater marshes and along the southern coast of the Río de la Plata estuary, as well as in woodland. It is characterized by having stiff hairs on its otherwise naked tail, which are believed to help
24-623: The pollex are equipped with a claw. Its karyotype has 2n = 32. According to the IUCN Red List of Threatened Species in 2008 the Argentine swamp rat was classified as least concern because of "its wide distribution, presumed large population , and because it is unlikely to be declining at nearly the rate required to qualify for listing in a threatened category." These rodents are found in low, flooded grasslands, salt marshes and any area with standing water. They are good swimmers and employ
30-515: The aid of their "swimming fringe" and have also been observed diving. Argentine swamp rats are found scattered through the Rio de la Plata basin and other areas in east-central Argentina, south coastal Brazil, southern Paraguay, and Uruguay. Argentine swamp rats eat mostly beetles and earthworms . They are active during both day and night. Females were found, on average, with between three and five young and breeding males were found year-round. There
36-495: The animal swim . S. aquaticus is similar in build to members of the genus Rattus . "[It] has a relatively larger head, a stouter body, larger feet, and a relatively longer tail." The pelage along its back is "long and glossy" varying from brown to dark brown. It can have a grayish wash in some individuals. "The sides have a yellowish cast." The pelage in the abdominal region is typically an off white color. The forefeet are large for use in swimming and digging. All digits, including
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