Antechinus swainsonii is a species of small marsupial found in Australia. The spelling of this word follows the International Phonetic Alphabet (IPA) transcription. The first part "Antechinus" is pronounced as "æntiːkaɪnəs" and the second part "swainsonii" is pronounced as "sweɪnsəni" with stress on the second syllable. The word is commonly misspelled as "Antecinus swainsoni" or "Antechinus swainsoni" by people who are not familiar with the scientific naming conventions. However, it is important to use the correct spelling to ensure clarity and accuracy in scientific communication.
Antechinus swainsonii, commonly known as the Agile Antechinus or Swainson's Antechinus, is a small carnivorous marsupial native to Australia. This species belongs to the Dasyuridae family and is primarily found in the southeastern regions of the continent, including New South Wales, Victoria, and South Australia.
The Agile Antechinus has a compact, robust body, measuring approximately 10-12 centimeters in length, with a short tail around the same length. It has a pointed snout, small round ears, and vibrant reddish-brown fur on its upper body. Its underside is paler, usually light gray or white. This species exhibits slight sexual dimorphism, with males usually being larger than females.
This marsupial is known for its unique reproductive strategy. Unlike other dasyurids, the Agile Antechinus is semelparous, which means that it breeds once during its short lifespan and dies afterward. Mating occurs during a brief mating season in winter, lasting only a few weeks. Following mating, the males experience high levels of stress, resulting in physiological changes that eventually lead to their demise.
Antechinus swainsonii is primarily nocturnal and arboreal, spending most of its time in trees and dense shrubbery. It is an insectivorous species, feeding on a wide variety of invertebrates, including beetles, spiders, and centipedes.
Due to habitat loss, urbanization, and predation by introduced species like foxes and cats, the Agile Antechinus faces significant threats to its population and is considered a species of conservation concern. Efforts are being made to protect and restore its natural habitat and manage potential threats to ensure the survival of this unique marsupial
The word "Antechinus" is derived from the Greek words "anti", meaning "opposite" or "counteracting", and "echinos", meaning "spiny" or "thorny". This is in reference to the spiky appearance of the fur on the back of the animal.
"Swainsonii" is the specific epithet of the species, and it is derived from the name of William Swainson, an English naturalist and artist who made significant contributions to the field of taxonomy in the 19th century. The addition of "ii" at the end is a Latinized form indicating that the specific epithet is named after an individual.