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Muskrats feed mostly on cattail and other aquatic vegetation but also eat small animals. Ondatra zibethicus is the only extant species in the genus Ondatra; its closest relative is the round-tailed muskrat (Neofiber alleni). It is the largest species in the subfamily Arvicolinae, which includes 142 other species of rodents, mostly voles and ...
This is a list of mammals in Virginia, including both current and recently historical inhabitants. Virginia has 77 species of native land mammals (including extirpated species), and the coast is visited by nearly 30 marine mammal species. 11 species or subspecies of native Virginian mammals are listed as endangered or threatened by the state ...
Besides breeding quickly, each nutria consumes large amounts of aquatic vegetation. [41] An individual consumes about 25% of its body weight daily, and feeds year-round. [31] [42] Being one of the world's larger extant rodents, a mature, healthy nutria averages 5.4 kg (11 lb 14 oz) in weight, but they can reach as much as 10 kg (22 lb).
In 1993, the OTA estimated that a total of $100 million is invested annually in invasive species aquatic weed control in the U.S. [19] Introduced rats cause more than $19 billion per year in damages, [20] exotic fish cause up to $5.4 billion annually, and the total costs of introduced weeds are estimated at around $27 billion annually. [21]
This method of vermin control has possible use in places where rodents are resistant to some of the anticoagulants, particularly for control of house and field mice; zinc phosphide baits are also cheaper than most second-generation anticoagulants, so that sometimes, in the case of large infestation by rodents, their population is initially ...
The European water vole (Arvicola amphibius) or northern water vole is a semi-aquatic rodent. It is often informally called the water rat, though it only superficially resembles a true rat. [3] Water voles have rounder noses than rats, deep brown fur, chubby faces and short fuzzy ears; unlike rats their tails, paws and ears are covered with hair.