Subfamily Murinae Scientific name Rattus fuscipes Rank Species | Phylum Chordata Genus Rattus Higher classification Rat | |
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Similar Rat, Mammal, Rodent, Australian swamp rat, Antechinus | ||
Australian bush rat eating grass
The bush rat (Rattus fuscipes) is a small Australian nocturnal animal. It is an omnivore and one of the most common indigenous species of rats on the continent, found in many heathland areas of Victoria and NSW.
Contents
- Australian bush rat eating grass
- Australian bush rat taking refreshment and having small dig jan 16
- Description
- Distribution and habitat
- Diet
- Behaviour
- Breeding behavior
- References
Australian bush rat taking refreshment and having small dig jan 16
Description
While there are not many characteristics that distinguish the bush rat from other Rattus species, it is characterized by having a small tympanic bullae and a straight incisive foramina. Adult bush rats are smaller than the Australian swamp rat (Rattus lutreolus) and in addition, the bush rat's foot pads are a pink colour, whereas the swamp rat's foot pads are dark brown. The feet are pentadactyl with all digits clawed. The bush rat exhibits sexual dimorphism; the males are larger than the females in the species.
Distribution and habitat
The bush rat is found primarily in the coastal regions of southwestern Australia. While it is mainly found in the lowlands, the bush rat can also be found in parts of the Australian Alps and on some offshore islands, including Kangaroo Island. The bush rat is terrestrial and prefers areas with dense undergrowth. It constructs a burrow that leads down into the nest chamber and is lined with grass and other vegetation.
Diet
The bush rat doesn't show much overlap in diet with other local rodent species. In the summer it consumes primarily fruit, arthropods, and seeds, but in the winter its main source of food is from a particular cyperaceous species. When found in the forest it consumes primarily fungi and various fibrous plant material. Bush rats have been observed feeding on nectar without damaging the blossoms, thus likely aiding in pollination.
Behaviour
The bush rat is strictly nocturnal and is active year-round. Adults seem to be nomadic, but will rarely leave the forest floor. The bush rat was once considered to be solely a herbivore but recently it has been discovered that it is an omnivore. It is also the host to more parasites than any other Australian rodent. They exhibit stereotypically normal behaviour when approaching an intruder; boxing, threat-posture, clash, approach. The bush rat is prey to some local predators, including dingoes, foxes, birds of prey and reptiles.
Bush rats tend to avoid areas impacted by humans, and populations tend to decline when anthropogenic influences in a region increase.
Breeding behavior
The bush rat begins breeding around November and has litter sizes ranging usually between 4-5. The majority of individuals do not live to a second breeding cyle due to their short life span. The gestation period of the bush rat varies between 22 and 24 days. The "nursery" of the bush rat is its burrow. The nursing period lasts for about the first 20–25 days of life.