A current view of classification and sampling of terrestrial snails: A review
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2017, Vol 10, Issue 1
Abstract
The snails are second large and most successful invertebrates on the face of the earth yet remained ignored and unidentified due to the lesser interest of scientist. Due to this these have not been successfully documented in the Red Data Book. Out of 693 documented extinctions 42% are from Phylum Mollusca. The species delimitation is still an issue. The shells have phenotypic plasticity and variation due to which relying completely on the morphology of the shell becomes strongly confusing to systematists. The biochemical and molecular markers are important in understanding freshwater gastropod diversity along with morphological characters. However species specific markers have not been much explored in the field of malacology due to which most of the work in the last two decades reveals species characterization on the basis of RAPD markers. Still there are gaps need to be filled as there are many traits that are plastic and have been used in description of many species in taxonomic reviews and therefore are not very useful in determination of systematic relationships. The shell size is directly proportional with some ecological factors as well as geographical features. Species concept and sampling strategies needs to be reconsidered and redefined when studying land snails.
Authors and Affiliations
Javaria Altaf, Naureen Aziz Qureshi
Keywords
Related Articles
- EP ID EP39022
- DOI -
- Views 217
- Downloads 0
Allelopathic potential of littleseed canary grass (Phalaris minor Retz.) on seedling growth of barley (Hordeum vulgare L.)
In order to assess the allelopathic effects of littleseed canary grass (Phalaris minor Retz.) against barley (Hordeum vulgare L.) the root exudates bioassays were conducted using the equal-compartment-agar method. The...
Genetic diversity of Iranian indigenous fennel (Foeniculum vulgare Mill.) populations using agronomic traits and essential oil
Fennel (Foeniculum vulgare Mill.) is one of the most important medicinal plants. It has a variety of secondary metabolites which are used in treatment of heart, nerves, digestive disorders and particularly alzheimer’s d...
Morphometric contribution and molecular markers for the characterization and identification of olive tree (Olea europaea L.) varieties
This study focused the variability of morphological types and polymorphism level in olive tree. Ten SSR microsatellite markers and 23 morphological descriptors were used to characterize 15 indigenous cultivars of this sp...
Molecular comparison of Clarias batrachus (Linnaeus, 1758) found in India with the species reported from Bangladesh
In the present study molecular comparison of Clarias batrachus from Meerut, India was done with the same species reported from Bangladesh using 16S rRNA. Since, they are morphologically similar, the conservedness in se...
Morphometric evaluation of an indigenous fish belong to genus Devario from three river systems of South Kerala
Morphometric parameters, length-weight relationship and condition factor of indigenous fish belong to Devario genus, with great export and economic potential was evaluated from three different river systems of South Kera...