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Zebrina detrita Muller, 1774

Zebrina detrita-Uzundere-Erzurum.JPG <b><i>Agropyron cristatum</b></i> (L.) Gaertn., 1770||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/12/18/20171218193721-668f3197-th.jpg>Thumbnails<b><i>Leonurus glaucescens</b></i> Bunge, 1830||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/09/18/20170918085408-a7f9e38a-th.jpg><b><i>Agropyron cristatum</b></i> (L.) Gaertn., 1770||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/12/18/20171218193721-668f3197-th.jpg>Thumbnails<b><i>Leonurus glaucescens</b></i> Bunge, 1830||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/09/18/20170918085408-a7f9e38a-th.jpg><b><i>Agropyron cristatum</b></i> (L.) Gaertn., 1770||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/12/18/20171218193721-668f3197-th.jpg>Thumbnails<b><i>Leonurus glaucescens</b></i> Bunge, 1830||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/09/18/20170918085408-a7f9e38a-th.jpg><b><i>Agropyron cristatum</b></i> (L.) Gaertn., 1770||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/12/18/20171218193721-668f3197-th.jpg>Thumbnails<b><i>Leonurus glaucescens</b></i> Bunge, 1830||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/09/18/20170918085408-a7f9e38a-th.jpg><b><i>Agropyron cristatum</b></i> (L.) Gaertn., 1770||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/12/18/20171218193721-668f3197-th.jpg>Thumbnails<b><i>Leonurus glaucescens</b></i> Bunge, 1830||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/09/18/20170918085408-a7f9e38a-th.jpg><b><i>Agropyron cristatum</b></i> (L.) Gaertn., 1770||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/12/18/20171218193721-668f3197-th.jpg>Thumbnails<b><i>Leonurus glaucescens</b></i> Bunge, 1830||<img src=./_datas/t/6/y/t6ynvw9sux/i/uploads/t/6/y/t6ynvw9sux//2017/09/18/20170918085408-a7f9e38a-th.jpg>

Zebrina detrita Muller, 1774
Common names: Large Bulin, Zebra Snail [En], Bulime zébré [Fr], Märzenschnecke [De]

Uzundere, ERZURUM ● Turkey

Description: The shell is widely oval with a blunt tip, almost smooth and shining. The shell with its firm wall is opaquely white, hint towards the fact that this is a warmth-loving species. There are dark stripes running across the whorls, giving the snail its zebra-like appearance. But those stripes can also be missing so the snail is purely white. The aperture is light brownish, umbilicus open and partly covered.
The size is 12-30 x 8-12 mm, the egg diameter 2.0-2.4 mm.

At the periphery of the range of this species in central Albania, isolated from the main populations, Fehér & Erőss 2009 found a consistently sinistral population and classified it as a new subspecies Z. detrita sallake.

Biology: The snail is described as sociable, it does appear in large numbers. In central Europe, the animals hibernate in 3-5 cm depth in the soil. In the summer the animals escape bottom heat by climbing up grasses.
The reproduction (in Germany) occurs in two periods April/May and August/September. The copulation only at rainy days takes about 1 hour in which both partners exchange spermatophores. Snails can copulate various times. 10-20 days after copulation, the eggs (2.0-2.4 mm) are laid in clutches of 15-70 eggs. Juveniles hatch after 27-36 days, the full size is reached after 2 years. The maximum age is 4-5 years.

Habitat: Meadows of warm and dry slopes, rocky grasslands. In Switzerland in up to 1800 m, in Bulgaria 2500 m.

Distribution: From NE Spain to Germany, W Ukraine and Turkey

Threats : The species is threatened by agricultural activities, especially by cutting of grasses in the summer season. It is endangered in Austria, Czech Republic and Germany, vulnerable in Switzerland.

References:
Animal Base
The living world of Molluscs



Created on
Sunday 16 July 2017
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