Minuscule snails confronts the current knowledge and scientific terminology regarding terrestrial “microsnails”. While inspecting soil samples which were collected from the base of limestone rocks in Guangxi Province, Southern China, researchers Barna Páll-Gergely and Takahiro Asami from Shinshu University, Adrienne Jochum, University and Natural History Museum of Bern, and András Hunyadi, stumbled upon the empty light grey shells, which measured a staggering height of less than 1 mm.
The only known shell of Angustopila dominikae, termed after the wife of the first author, was calculated a mere 0.86 mm in shell height. As a result, it is considered to be the Earth’s tiniest land snail species when emphasizing on the largest diameter of the shell. With only a handful of reported instances of species that illustrates this degree of tininess, the group informed a total number of seven new land snail species in their paper. The paper was published in the open access journal ZooKeys.
Another of the herein designated new species, called Angustopila subelevata, measured 0.83-0.91 mm (mean = 0.87 mm) in height.
Earlier, two of the authors described other species of tiny land snails from China and Korea in the same journal.
In their current paper, Dr. Pall-Gergely and his squad also talked about the challenges they had to undertake by surveying small molluscs, since discovering the living specimens is still extremely grim. Thus, the evolutionary associations between these species, as well as the quantity of existing species are yet little known.
“Extremes in body size of organisms not only allure attention from the general people, but also provoke interest regarding their adaptation to their environment,” prompt the researchers. “Examining tiny-shelled land snails is significant for assessing biodiversity and natural history as well as for building the foundation for studying the evolution of dwarfism in invertebrate animals.”
“We are keen to inform that these results offers the taxonomic groundwork for future studies relating to the evolution of dwarfism in invertebrates,” they concluded.
Eike Neubert, a researcher at Bern’s Natural History Museum - not involved in the papers - stated that “this is an outstanding study on usually unnoticed species of snails. People do not know that the world is full of microscopic life beyond the degree of bacteria or unicellular organisms.”
Neubert informed that an estimated 75 percent of snails are actually very small, and some are less than 5 millimeters in length, and thus “beyond the magic boundary of public awareness.”
“The world is full of small snails,” he commented, “on land as well as in the oceans or in the lakes.”
Steve Smith
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