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1 sie 1993 · Estrus, gestation, and placentation were studied in the Virginia opossum (Didelphis virginiana) and the gray short-tailed oppossum (Monodelphis domestica), representatives of the prototypic, New World marsupial family Didelphidae.
BIOLOGY AND LIFE HISTORY Unique among North American mammals, opossums belong to the mammalian subclass known as marsupials. Breeding occurs in mid-winter, and tiny (0.1 inch) young are born after a brief gestation period of 12 days. Remarkably, the young climb into a pouch located on the female’s abdomen.
2 gru 2023 · This paper goes over The Virginia opossum (Didelphis virginiana) including distribution in southeastern US, external appearance, diet, reproduction, physiology, predators, parasites, genetics...
The expansion of the Virginia opossum (Didelphis virginiana Kerr, 1792) into Michigan has been documented over the past 200 years, indicating relatively new colonizations in northern Michigan.
The brief gestation period is 12 to 13 days and up to 25 young may be produced in each litter. Newborns are the size of a honeybee and once delivered they climb up into the mother's pouch. On entering the pouch, each baby must find a nipple and attach itself.
The Virginia opossum (Didelphis virginiana), also known as the North American opossum, is a member of the opossum family found from southern Canada to northern Costa Rica (making it the northernmost marsupial in the world).
In northern regions, Virginia opossums average only one litter per year, in warmer climates the number of litters may increase to 3 per year. Being Marsupials they have a very short gestation period of only 12 to 13 days. Virginia Opossums, and all Marsupials, are altricial.
