Oligoryzomys: Difference between revisions

Latest revision as of 10:59, 15 February 2025

Oligoryzomys[edit]

Oligoryzomys is a genus of rodents in the family Cricetidae, commonly referred to as "colilargos" or "long-tailed mice." These small mammals are primarily found in South America, inhabiting a range of environments from tropical forests to grasslands.

Taxonomy[edit]

The genus Oligoryzomys is part of the subfamily Sigmodontinae, which includes a diverse group of rodents native to the Neotropics. The genus was first described in the early 20th century and has since been the subject of numerous taxonomic revisions. Species within this genus are often distinguished by their morphological characteristics, such as the length of their tails and the structure of their molars.

Distribution and Habitat[edit]

Oligoryzomys species are distributed across a wide range of habitats in South America, from the Andes mountains to the lowland Amazon rainforest. They are adaptable rodents, capable of living in both forested and open areas. Their presence has been recorded in countries such as Argentina, Brazil, Chile, and Peru.

Physical Characteristics[edit]

Members of the genus Oligoryzomys are small rodents, typically weighing between 20 to 40 grams. They have a distinctive long tail, which often exceeds the length of their body. Their fur is generally soft and varies in color from grayish-brown to reddish-brown, depending on the species and their environment.

Behavior and Ecology[edit]

Oligoryzomys are primarily nocturnal and are known for their agility and climbing abilities. They are omnivorous, feeding on a diet that includes seeds, fruits, insects, and other small invertebrates. These rodents play a significant role in their ecosystems as seed dispersers and as prey for a variety of predators.

Reproduction[edit]

The reproductive habits of Oligoryzomys vary among species, but they generally have a high reproductive rate. Females can produce several litters per year, with each litter consisting of 2 to 6 young. The gestation period is relatively short, and the young are weaned quickly, allowing for rapid population growth under favorable conditions.

Related Pages[edit]

@@ Line 1: / Line 1: @@
-{{Taxobox
+== Oligoryzomys ==
-| name = Oligoryzomys
-| image = Oligoryzomys_longicaudatus.jpg
-| image_caption = Oligoryzomys longicaudatus
-| regnum = [[Animalia]]
-| phylum = [[Chordata]]
-| classis = [[Mammalia]]
-| ordo = [[Rodentia]]
-| familia = [[Cricetidae]]
-| subfamilia = [[Sigmodontinae]]
-| genus = '''''Oligoryzomys'''''
-| genus_authority = [[Oldfield Thomas|Thomas]], 1916
-}}
-'''Oligoryzomys''' is a genus of rodents in the family [[Cricetidae]], commonly known as pygmy rice rats. These small mammals are primarily found in Central and South America, inhabiting a variety of environments ranging from tropical rainforests to grasslands. The genus is notable for its ecological diversity and adaptability.
+[[File:Raton_colilarga.jpg|thumb|right|Oligoryzomys, commonly known as the "colilargo" or "long-tailed mouse"]]
-==Taxonomy==
+'''Oligoryzomys''' is a genus of rodents in the family [[Cricetidae]], commonly referred to as "colilargos" or "long-tailed mice." These small mammals are primarily found in [[South America]], inhabiting a range of environments from tropical forests to grasslands.
-The genus ''Oligoryzomys'' was first described by the British zoologist [[Oldfield Thomas]] in 1916. It belongs to the subfamily [[Sigmodontinae]], which is part of the larger family [[Cricetidae]]. This genus includes several species, some of which are:
-* ''[[Oligoryzomys flavescens]]''
-* ''[[Oligoryzomys longicaudatus]]''
-* ''[[Oligoryzomys nigripes]]''
-==Description==
+=== Taxonomy ===
-Members of the genus ''Oligoryzomys'' are small rodents, typically characterized by their long tails, which are often longer than their body length. They have soft fur, which can vary in color from gray to brown, depending on the species and their habitat. Their ears are relatively large, and they have a pointed snout.
-==Distribution and Habitat==
+The genus Oligoryzomys is part of the subfamily [[Sigmodontinae]], which includes a diverse group of rodents native to the [[Neotropics]]. The genus was first described in the early 20th century and has since been the subject of numerous taxonomic revisions. Species within this genus are often distinguished by their morphological characteristics, such as the length of their tails and the structure of their molars.
-''Oligoryzomys'' species are distributed throughout Central and South America. They are found in a wide range of habitats, including:
-* [[Tropical rainforest]]s
-* [[Savanna]]s
-* [[Grassland]]s
-* [[Agricultural land]]
-These rodents are highly adaptable and can thrive in both natural and disturbed environments.
+=== Distribution and Habitat ===
-==Ecology and Behavior==
+Oligoryzomys species are distributed across a wide range of habitats in South America, from the [[Andes]] mountains to the lowland [[Amazon rainforest]]. They are adaptable rodents, capable of living in both forested and open areas. Their presence has been recorded in countries such as [[Argentina]], [[Brazil]], [[Chile]], and [[Peru]].
-''Oligoryzomys'' species are primarily nocturnal and are known for their agility and climbing abilities. They are omnivorous, feeding on a diet that includes seeds, fruits, insects, and other small invertebrates. Their role in the ecosystem includes seed dispersal and serving as prey for various predators.
-==Medical Significance==
+=== Physical Characteristics ===
-Some species of ''Oligoryzomys'', such as ''[[Oligoryzomys longicaudatus]]'', are known to be reservoirs for the [[Andes virus]], which causes [[Hantavirus pulmonary syndrome]] in humans. This has significant public health implications, particularly in rural areas where human-rodent interactions are more common.
-==Conservation Status==
+[[File:Raton_colilarga.jpg|thumb|left|Close-up of Oligoryzomys showing its distinctive long tail]]
-The conservation status of ''Oligoryzomys'' species varies. While some species are considered to be of [[Least Concern]] by the [[IUCN Red List]], others may face threats from habitat destruction and fragmentation.
-==Also see==
+Members of the genus Oligoryzomys are small rodents, typically weighing between 20 to 40 grams. They have a distinctive long tail, which often exceeds the length of their body. Their fur is generally soft and varies in color from grayish-brown to reddish-brown, depending on the species and their environment.
+=== Behavior and Ecology ===
+Oligoryzomys are primarily nocturnal and are known for their agility and climbing abilities. They are omnivorous, feeding on a diet that includes seeds, fruits, insects, and other small invertebrates. These rodents play a significant role in their ecosystems as seed dispersers and as prey for a variety of predators.
+=== Reproduction ===
+The reproductive habits of Oligoryzomys vary among species, but they generally have a high reproductive rate. Females can produce several litters per year, with each litter consisting of 2 to 6 young. The gestation period is relatively short, and the young are weaned quickly, allowing for rapid population growth under favorable conditions.
+== Related Pages ==
 * [[Cricetidae]]
 * [[Sigmodontinae]]
-* [[Hantavirus]]
+* [[Rodent]]
-* [[Rodentia]]
+* [[Neotropics]]
-{{Rodent-stub}}
 [[Category:Cricetidae]]
 [[Category:Rodents of South America]]
-[[Category:Rodents of Central America]]