вторник, 19 февруари 2013 г.
Pseudofusulus varians
From Wikipedia, the free encyclopedia
| Pseudofusulus varians | |
|---|---|
 | |
| Common and albinotic colour forms ofPseudofusulus varians | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| (unranked): | clade Heterobranchiaclade Euthyneura clade Panpulmonata clade Eupulmonata clade Stylommatophora informal group Sigmurethra |
| Superfamily: | Clausilioidea |
| Family: | Clausiliidae |
| Subfamily: | Clausiliinae |
| Tribe: | Clausiliini[1] |
| Genus: | Pseudofusulus Nordsieck, 1977[2] |
| Species: | P. varians |
| Binomial name | |
| Pseudofusulus varians (C. Pfeiffer, 1828)[3] | |
| Synonyms | |
| Clausilia varians Pfeiffer, 1828 | |
Pseudofusulus varians is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Clausiliidae.
Genus Pseudofusulus is monotypic genus (contains one species only) with Pseudofusulus varians as its type species.
It is a relict species from Atlantic period of the Holocene, inhabiting exclusively nature beech and scree forests in Europe.[4]
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[edit]Distribution
The distribution of this species is Eastern-Alpine and Western-Carpathian.[5] The type locality is High Alps in Styria, Austria.[3]
The key area of its range are Western Alps (from the south-western part of Alps to Croatia, and also to Dolomites in the southern Tyrol).[4]
- Austria[4]
- Germany[4]
- Czech Republic - 7 confirmed sites in Ore Mountains in Bohemia,[4] locally extinct in Moravia.[4] Already Vojen Ložek has been calling for the effective conservation of this species in 1980s.[4][6] It is one of the most endangered species in the Czech Republic, restricted to hidden and undisturbed natural deciduous forests.[7] Originally it was known from 16 sites in the Ore Mountains (Krušné Hory Mts.), in the northwestern Bohemia, Czech Republic and one site on the slope of Smrk Mount in the Moravian-Silesian Beskids (Moravskoslezské Beskydy Mts.), East Moravia, Czech Republic.[4]
- extinct in Moravia: The forest at the only (but well populated) locality in the Moravia has been seriously damaged by air pollution from factories (such as Třinec Iron and Steel Works and others) jointly with the 20°C dropping of temperatures in inversion on the 31st December 1978.[4] The nearly all pollution-damaged stand died out at the southwestern slope on the Smrk Mount.[4]
- in Bohemia: The occurrence of the snail was recently confirmed only at seven sites in the Krušné Hory Mts.[4] Remaining sites were destroyed due t
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