Journal article
SNAIL HANDEDNESS - THE COILING DIRECTIONS OF GASTROPODS
National geographic research, Vol.9(1), pp.104-119
01 Dec 1993
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Potentially and actually, snails coil 4 (not 2) main ways, regardless of world hemispheres and ecological factors. Dextrality (right-handedness) is commonest, and sinistrality (left-handedness) can be a very rare abnormality. Ambidextrality (the common co-occurrence of both forms), though, exists in a few land-snail species. The terms dextral and sinistral are best defined with regard to the asymmetric anatomy of a gastropod, not its right-handedly or left-handedly coiled shell, if it has one. (Even a shell-less land slug can be sinistral.) A left-handed shell can contain an anatomically dextral animal, and the coiling direction of a larva can differ from that of the adult growing from it.
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Details
- Title
- SNAIL HANDEDNESS - THE COILING DIRECTIONS OF GASTROPODS
- Creators
- R Robertson
- Publication Details
- National geographic research, Vol.9(1), pp.104-119
- Publisher
- Natl Geographic Soc
- Number of pages
- 16
- Resource Type
- Journal article
- Language
- English
- Identifiers
- 991019350673804721
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