Brad Douglas Photography | Mammals | Rattus lutreolus velutinus
Taken 7-Jan-16
Visitors 17

10 of 12 photos
Categories & Keywords

Subcategory Detail:
Keywords:Australia, Australian Swamp Rat, Rattus lutreolus velutinus, Wildlife, rodent
Photo Info

Dimensions5395 x 2698
Original file size5.09 MB
Image typeJPEG
Color spacesRGB
Date taken7-Jan-16 17:03
Date modified24-Jan-16 22:37
Shooting Conditions

Camera makeCanon
Camera modelCanon EOS 5D Mark III
Focal length428 mm
Max lens aperturef/6.2
Exposure1/400 at f/7.1
FlashNot fired, compulsory mode
Exposure bias0 EV
Exposure modeAuto
Exposure prog.Shutter priority
ISO speedISO 4000
Metering modeSpot
Rattus lutreolus velutinus

Rattus lutreolus velutinus

Rattus lutreolus velutinus (Australian Swamp Rat)
IUCN Status: Least Concern
Swam rats are a native rodent of Australia. They range from Fraser Island in Queensland down the east coast and around the southern coast to Kangaroo Island. This subspecies is endemic to Tasmania and there is another isolated subspecies in north Queensland around Atherton.
Swamp rats live in a range of wet habitats from the coast up to elevations of 1600m. They form extensive tunnel systems beneath dense vegetation allowing them to be active by both day and night. Grasses and seeds make up most of their diet, though they will take insects opportunistically.
Like all rodents, they breed prolifically. They are seasonal breeders from September through March. Hitting sexual maturity in only three months, females from the first litter of the season can be breeding in that same season. Three to five young are born per litter. Life expectancy is about eighteen months.
Interesting trivia:
  1. The teeth of the individuals in a certain area change based on the diet they mainly feed on. In fact, in one spot this occurred over a period of about 100 years after human settlement changed the available food sources.
  2. When born the young weight around 5g and just over 40mm long.
  3. Although sometimes confused with water rats (*cough cough*) swamp seem to avoid swimming, preferring to stay dry if possible.