| 词条 | Euchondrus |
| 释义 |
| name = Euchondrus | image = Euchondrus septemdentatus 01.JPG | image_caption = Euchondrus septemdentatus (Roth,1839) | regnum = Animalia | phylum = Mollusca | classis = Gastropoda | unranked_superfamilia = clade Heterobranchia clade Euthyneura clade Eupulmonata clade Stylommatophora informal group Orthurethra | superfamilia = Enoidea | familia = Enidae | genus = Euchondrus | genus_authority = Boettger, 1883[1] | subdivision_ranks = Species | subdivision = See text }} Euchondrus is a genus of very small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Enidae. DistributionThe snails in this genus are found in Cyprus, Turkey, Syria, the Negev desert of Israel, Jordan. Shell descriptionThe gastropod shell of Euchondrus is 6.5–13 mm in height in Euchondrus parreyssi, that has very variable size in Euchondrus.[2] The shell is elongate with 5-7 whorls[2] and a high spire. The aperture is toothed. EcologyThis snail species lives in open habitats, under limestone rocks in the desert. Three species of Euchondrus in the Negev desert are noted for eating lichens growing under the surface limestone rocks and slabs (endolithic lichens).[4] They disrupt and eat the limestone.[4] Their grazing resulting in the weathering of the stones, and the subsequent formation of soil.[3] They have a significant effect on the region: the total population of snails is estimated to process between 0.7 and 1.1 metric ton per hectare per year of limestone in the Negev desert.[3] SpeciesSpecies within the genus Euchondrus include:
References1. ^Böttger O. (1883). "[Malakozoologische Mittheilungen.] II. Binnenconchylien aus Syrien". Bericht über die Thätigkeit des Offenbacher Vereins für Naturkunde 22/23: 162-176, Taf. 1. {{Taxonbar|from=Q5405900}}2. ^1 "Species summary for Euchondrus parreyssi". AnimalBase, last modified 24 February 2009, accessed 7 September 2010. 3. ^1 2 3 Odling-Smee F. J., Laland K. N. & Feldman M. W. (2003). "Niche Construction: The Neglected Process in Evolution (MPB-37)". Princeton University Press. 468 pp. HTM, PDF. Chapter 1. page 7-8. 4. ^1 2 3 4 5 "Species in genus Euchondrus" [n=6]. AnimalBase, accessed 6 September 2010. 1 : Enidae |
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