Carinascinus greeni
The alpine cool-skink (Carinascincus greeni), also known as the northern snow skink, is a viviparous lizard endemic to the alpine regions of Tasmania, Australia. It is characterized by small, dark scales with pale green to bronze spots and inhabits rocky banks of streams, swamps, and boulder fields above 1,000 meters. This species faces threats from climate change, which is shrinking its cool habitat and potentially allowing lowland species to encroach.
Key Facts
- ›Endemic to the alpine regions of Tasmania, Australia.
- ›Small, dark scales with pale green to bronze spots.
- ›Grows up to 7.5 cm snout-to-vent length.
- ›Gives birth to live young (viviparous), typically 2-4 offspring.
- ›Reproduces biannually, with females storing sperm over winter.
- ›Listed as 'Vulnerable' on the IUCN Red List, primarily due to climate change.
Alpine Cool-Skink, Northern Snow Skink
Tasmania, Australia
Alpine, Rocky Banks of Streams, Swamps, Boulder Fields
- Small Dark Scales With Pale Green To Bronze Spots.
- Head Sometimes Paler Than the Body With Larger Spots.
- Snout-To-Vent Length Up To 7.5 cm .
- Midbody Scales In 40–44 Rows Around the Body.
- Basking Behavior Observed In Suitable Habitats.
- Competitively Excludes Other Species From Optimal Basking Spots.
- Females Can Store Sperm Over Winter.
Climate Change, Encroachment By Lowland Skink Species
About Carinascinus greeni
Carinascincus greeni
The alpine cool-skink, scientifically known as Carinascincus greeni and also commonly referred to as the northern snow skink, is a species of lizard native to Tasmania, Australia. This species is specifically found in the alpine regions of the state, typically above 1,000 meters in elevation, and is most frequently observed in the northern parts of Tasmania.
Description and Habitat
Carinascincus greeni is characterized by its small, dark scales adorned with pale green to bronze spots, with the head sometimes exhibiting a paler coloration and larger spots. Adults can reach a snout-to-vent length of up to 7.5 cm. The species is adapted to harsh alpine environments, inhabiting rocky banks along streams and swamps, as well as boulder fields where they bask. It has been noted to actively compete for optimal basking sites, sometimes excluding other species within the same genus.
Reproduction and Life Cycle
To survive its cool climate, Carinascincus greeni has evolved viviparity, giving birth to live young. This reproductive strategy allows the eggs to be retained internally, protecting them from extreme temperature fluctuations. Females typically give birth to litters of 2 to 4 young around March and reproduce biannually. Notably, females possess the ability to store sperm over the winter months, fertilizing their eggs in the spring.
Conservation Status and Threats
The alpine cool-skink is currently listed as 'Vulnerable' on the IUCN Red List. The primary threat to its survival is climate change, which is projected to reduce the extent of its essential cool alpine habitat. Furthermore, warming temperatures may facilitate the encroachment of lowland skink species into C. greeni's territory, posing a competitive challenge, particularly as these lowland species reproduce annually compared to C. greeni's biannual cycle.
Source: Wikipedia ↗
Frequently Asked Questions
What is the scientific name for the alpine cool-skink?
The scientific name for the alpine cool-skink is Carinascincus greeni. It was previously classified under the genus Niveoscincus, but has since been reclassified into the genus Carinascincus.
Where can the Carinascincus greeni be found?
Carinascincus greeni is found in the alpine areas of Tasmania, Australia, primarily in the northern part of the state. It is commonly observed around Cradle Mountain and the central plateau, extending as far east as Ben Lomond National Park and south to Mt Field.
What kind of habitat does the alpine cool-skink prefer?
This skink species is restricted to alpine environments above 1,000 meters. It inhabits rocky banks of streams and swamps, as well as boulder fields where it can be seen basking.
How does Carinascincus greeni reproduce?
Carinascincus greeni has evolved viviparity, meaning it gives birth to live young rather than laying eggs. This adaptation helps protect the developing young from the fluctuating temperatures of its alpine habitat. Litters typically consist of 2-4 offspring, born around March.
What are the main threats to the alpine cool-skink?
The primary threat to Carinascincus greeni is climate change, which is reducing the extent of its cool alpine habitat. Additionally, climate change may lead to lowland skink species encroaching on its territory, posing a competitive disadvantage as they reproduce more frequently.
What is the conservation status of Carinascincus greeni?
Carinascincus greeni is listed as 'Vulnerable' on the IUCN Red List. This status reflects the significant threats it faces, particularly from climate change and potential competition from other lizard species.
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