Partula radiolata
| Partula radiolata | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Partula radiolata |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Partula radiolata | ||||||||||||
| ( Pfeiffer , 1846) |
Partula radiolata is an endangered species of snail in the genus Partula . It is endemic to Guam .
description
The right-hand winding, elongated conical, thin-walled, with fine depressions provided snail shell of Partula radiolata reaches a length of 13 to 18.5 mm and a width of 8 to 12 mm. The housing usually consists of 5 slightly convex passages, with the body passage about as high as the butt thread. The case mouth is obliquely oval with a simple, thin, white case edge that is slightly straighter on the right. The edge of the spindle is slightly enlarged above, over the navel. The surface is pale straw in color with darker axial rays and brown lines. The hermaphroditic snail gives birth to living young. It feeds on microscopic plants and detritus.
distribution
Partula radiolata is endemic to Guam . Like other tree snails, it can be found on deciduous trees. In 1992 it was still very common in places along watercourses in the south of the island.
Danger
To combat large agate snails introduced on Guam, the rosy wolf snail ( Euglandina rosea ) was introduced in 1957 and the land planarie Platydemus manokwari in 1978 , whereupon the populations of agate snails and also the native snail species declined sharply. Although Platydemus manokwari is primarily a ground- dwelling species, it eats Partula snails and has also been observed on trees. The destruction of undergrowth by introduced goats also plays a role in the decline in species. In contrast to many Partula species in Guam, colonies of Partula radiolata are still being found, but their existence cannot be guaranteed without protective measures.
literature
- Barry D. Smith, Ramsay Cooper-Nurse, and Ann Marie Gawel (2015): Survey of Endangered Tree Snails on Navy-Owned Land in Guam . PDF
- David R. Hopper, Barry D. Smith (1992): Status of tree snails (Gastropoda: Partulidae) on Guam, with a resurvey of sites studied by HE Crampton in 1920 . Pacific Science 46, pp. 77-85. PDF
