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Pink fairy armadillo
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Pink fairy armadillo
The pink fairy armadillo (Chlamyphorus truncatus) is the smallest species of armadillo, first described by Richard Harlan in 1825. The pink fairy armadillo is 90–115 mm (3.5–4.5 in) long, and typically weighs about 120 g (4.2 oz). This solitary, desert-adapted animal is endemic to the deserts and scrub lands of central Argentina. The pink fairy armadillo is closely related to the only other fairy armadillo (Chlamyphorinae), the greater fairy armadillo.
Pink fairy armadillos have small eyes, silky yellowish white fur, and flexible dorsal shells that are attached to their bodies solely by thin dorsal membranes. Their spatula-shaped tails protrude from vertical plates at the blunt rear of their shells. They exhibit nocturnal and solitary habits and feed themselves largely on insects, worms, snails, and various plant parts. The pink fairy armadillo has a unique ability to bury itself in a matter of seconds, using its specialised claws to dig into sandy or loamy soils. This behaviour helps protect the armadillo from predators and extreme temperatures, as well as conserve moisture in its arid habitat.
The conservation status of pink fairy armadillos is uncertain, and it is listed as Data Deficient by the IUCN Red List of Threatened Species. The decline in population for this species has generally been attributed to farming activities and predators, including domestic dogs and cats. Pink fairy armadillos are found less commonly than they were a few decades ago, and the field sightings have been rare and incidental.
Individuals caught in the wild had a tendency to die during or a couple of days after transport from their natural habitat to captive facilities. There is a sole record for the longevity of a pink fairy armadillo that was held in captivity for more than four years; however, that particular case lacks a scientific description.
Armadillos' evolutionary distinctiveness, combined with their restricted geographic range, ongoing threats, and rarity, makes conservation extremely urgent for these species.
Currently, fairy armadillos have the least molecular data available among all families of armadillos. The subfamily Chlamyphorinae includes only two extant species: Chlamyphorus truncatus, the pink fairy armadillo, and Calyptophractus retusus, the greater fairy armadillo. These two species are morphologically similar: both have notably reduced eyes and reinforced forearms that support enlarged digging claws. They are also one of the few mammals that lack visible external ears. Both species are specialized to a subterranean lifestyle which was developed in their ancestral lineage sometime between 32 and 17 Mya.
Both species have geographically separated distributions, and both are strictly nocturnal, but the details of their ecology and their population biology remain unknown.[clarification needed] The similarities can be explained either by the presence of a shared common ancestry, which would place both species in the same clade (making them monophyletic), or by the result of adaptive convergence due to extreme selective pressures induced by their lifestyle (suggesting them to be diphyletic). A study in 2012 of several of their genes concluded that they were monophyletic, estimating the split between the two species to have occurred around 17±3 Mya, around the transition between the Early Miocene and the Middle Miocene.
Both species are rare in the field and are fairly elusive, so the phylogenetic affinities of fairy armadillos have been tested only once. Research conducted in 2009 supported the idea that the three previously identified subfamilies Dasypodinae, Euphractinae, and Tolypeutinae of armadillos, which separated shortly after the Eocene-Oligocene transition, were monophyletic. Chlamyphorinae, the subfamily, including the pink fairy armadillo, was found to display phylogenetic affinities with the clade Tolypeutinae. This was a significant step in defining the previously completely unknown phylogenetic position of this armadillo subfamily within Cingulata. Later, the separation of the fairy armadillo subfamily from their sister-group of Tolypeutinae was estimated to have occurred 32±3 Mya.
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Pink fairy armadillo
The pink fairy armadillo (Chlamyphorus truncatus) is the smallest species of armadillo, first described by Richard Harlan in 1825. The pink fairy armadillo is 90–115 mm (3.5–4.5 in) long, and typically weighs about 120 g (4.2 oz). This solitary, desert-adapted animal is endemic to the deserts and scrub lands of central Argentina. The pink fairy armadillo is closely related to the only other fairy armadillo (Chlamyphorinae), the greater fairy armadillo.
Pink fairy armadillos have small eyes, silky yellowish white fur, and flexible dorsal shells that are attached to their bodies solely by thin dorsal membranes. Their spatula-shaped tails protrude from vertical plates at the blunt rear of their shells. They exhibit nocturnal and solitary habits and feed themselves largely on insects, worms, snails, and various plant parts. The pink fairy armadillo has a unique ability to bury itself in a matter of seconds, using its specialised claws to dig into sandy or loamy soils. This behaviour helps protect the armadillo from predators and extreme temperatures, as well as conserve moisture in its arid habitat.
The conservation status of pink fairy armadillos is uncertain, and it is listed as Data Deficient by the IUCN Red List of Threatened Species. The decline in population for this species has generally been attributed to farming activities and predators, including domestic dogs and cats. Pink fairy armadillos are found less commonly than they were a few decades ago, and the field sightings have been rare and incidental.
Individuals caught in the wild had a tendency to die during or a couple of days after transport from their natural habitat to captive facilities. There is a sole record for the longevity of a pink fairy armadillo that was held in captivity for more than four years; however, that particular case lacks a scientific description.
Armadillos' evolutionary distinctiveness, combined with their restricted geographic range, ongoing threats, and rarity, makes conservation extremely urgent for these species.
Currently, fairy armadillos have the least molecular data available among all families of armadillos. The subfamily Chlamyphorinae includes only two extant species: Chlamyphorus truncatus, the pink fairy armadillo, and Calyptophractus retusus, the greater fairy armadillo. These two species are morphologically similar: both have notably reduced eyes and reinforced forearms that support enlarged digging claws. They are also one of the few mammals that lack visible external ears. Both species are specialized to a subterranean lifestyle which was developed in their ancestral lineage sometime between 32 and 17 Mya.
Both species have geographically separated distributions, and both are strictly nocturnal, but the details of their ecology and their population biology remain unknown.[clarification needed] The similarities can be explained either by the presence of a shared common ancestry, which would place both species in the same clade (making them monophyletic), or by the result of adaptive convergence due to extreme selective pressures induced by their lifestyle (suggesting them to be diphyletic). A study in 2012 of several of their genes concluded that they were monophyletic, estimating the split between the two species to have occurred around 17±3 Mya, around the transition between the Early Miocene and the Middle Miocene.
Both species are rare in the field and are fairly elusive, so the phylogenetic affinities of fairy armadillos have been tested only once. Research conducted in 2009 supported the idea that the three previously identified subfamilies Dasypodinae, Euphractinae, and Tolypeutinae of armadillos, which separated shortly after the Eocene-Oligocene transition, were monophyletic. Chlamyphorinae, the subfamily, including the pink fairy armadillo, was found to display phylogenetic affinities with the clade Tolypeutinae. This was a significant step in defining the previously completely unknown phylogenetic position of this armadillo subfamily within Cingulata. Later, the separation of the fairy armadillo subfamily from their sister-group of Tolypeutinae was estimated to have occurred 32±3 Mya.
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