Water mouse, Marine mouse, mangrove mouse, Manngay, Yirrkoo
Xeromys myoides, also known as the water mouse, marine mouse, mangrove mouse, false water rat, manngay and yirrkoo, is a species of rodent native to waterways of Australia and Papua New Guinea.
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TerrestrialTerrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, snails), as compared with aquatic animals, which liv...
Among animals, viviparity is the development of the embryo inside the body of the parent. The term 'viviparity' and its adjective form 'viviparous'...
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Not a migrantAnimals that do not make seasonal movements and stay in their native home ranges all year round are called not migrants or residents.
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starts withFalse water rats have markedly long, flattened heads with small eyes and short, rounded ears that are 10 to 14 millimetres in length. These rats possess just two molars on each side of the upper and lower jaw. Their upper incisors are yellow or orange and the lower incisors are white. The head and body length is approximately 100 mm and characterised by a hunched body shape, the recorded size range is from 85 to 120 mm. The tail length is 85–100 mm and the hind-foot length is 23–26 mm. The body fur is water-resistant and dark gray, which gradually blends into the white underside, the hair is short and lustrous. The hands and feet are covered with fine, white hairs. Their feet are not webbed like other water rats (Hydromys chrysogaster ), which gives them their common name "false" water rat. The tail is sparsely haired and lacks the white tip found in the more common water rat. In addition, the tails of these rats are scaled. The average weight is 42 grams, and may vary from 35 to 55 g. This murid species has a total of four teats, two pairs at the inguinal region. They exude a strong musky odour.
X. myoides resembles no other species found within its habitat.
Natural fluctuations in sea level result in altered patterns of vegetation zones between saltmarsh, mangrove and terrestrial communities. Floodplain wetlands in northern Australia are susceptible to rising sea level due to climate change.
The false water rat (Xeromys myoides ) lives in Australia and Papua New Guinea. Once believed to be restricted to Southeast Queensland and the Northern Territory, the false water rat has subsequently been found in the central and southern parts of Queensland, North Stradbroke Island off the coast of Southeast Queensland, Melville Island, and southwest Western Province, Papua New Guinea.
False water rats primarily live in mangrove communities and shallow areas surrounding lagoons, swamps, and lakes. The water may be saline or fresh. Their nests are made at the base of mangrove trees. Their nests are very similar to termite mounds. They are made of leaves, mud, and may be as high as 60 centimetres. There is usually one opening and on the inside it is a complex system of tunnels which connects to multiple chambers. Since the tunnels are very complex sometimes the homes can overlap. This behaviour shows that they are social and very friendly. Because of their lack of webbed feet and their inability to swim, their nests are generally built near shallow water. This allows them to wade in water instead of swimming and diving in search of their food.
False water rats appear to depend on mangrove and intertidal salt marsh habitats for food. Their diet consists of invertebrates such as crabs, small mud lobsters, marine shellfish, snails and worms. They generally eat during the night and rest during the day. Their estimated home range used for foraging is 0.8 ha for males and 0.6 ha for females; however they can travel for up to 2.9 km each night.
Little is known about the life cycle and breeding patterns of this species. Since their food and nutrients are generally found amongst the mangroves, the lifespan of the false water rat is highly dependent upon the preservation of the mangrove forest. It is believed that they breed throughout the year with only two young per litter. Up to eight individuals of various ages (young and old) and either sex live in a nest, with usually only one sexually active adult male present and several females.
False water rats do not appear to negatively affect man or the human economy and they have no known positive economic importance for man other than playing a role in maintaining the ecological stability of the marine population they feed on, indirectly affecting local marine-related industries and the land. Through the years, man has been careless with the release of pollutants and other waste products thereby causing a decrease in the habitat for these animals. Paying particular attention, creating, promoting and maintaining environmentally safe processes surrounding excavation and construction, garbage and waste products elimination, chemicals and extracts usage, as well natural and unnatural predators will increase the survival chances of the false water rat. In addition, conservation of the wetlands and mangroves will not only prevent extinction of the false water rat and other animals but it will protect our shores from wave action, reduce the impacts of floods and absorb natural pollutants and provide habitat for animals and plants.
Social animals are those animals that interact highly with other animals, usually of their own species (conspecifics), to the point of having a rec...