Lesser blind mole-rat

Lesser blind mole-rat
Conservation status
Data Deficient  (IUCN 3.1)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Rodentia
Family:	Spalacidae
Genus:	Nannospalax
Species:	N. leucodon
Binomial name
Nannospalax leucodon (Nordmann, 1840)
Synonyms
Spalax leucodon Nordmann, 1840

The lesser blind mole-rat (Nannospalax leucodon) is a species of rodent in the family Spalacidae. It is found in Albania, Bosnia and Herzegovina, Bulgaria, Croatia, Greece, Hungary, North Macedonia, Moldova, Romania, Serbia, Montenegro, Turkey and Ukraine.

Prior to 2012, it was classified in the genus Spalax, but modern authors tend to separate this and some closely related mole rat species into a separate genus named Nannospalax. A study of the dentition showed that Nannospalax leucodon is a superspecies consisting of several cryptic species that can be distinguished by the caries in their teeth. According to this definition there are four separate "cariological" forms in the Carpathian Basin, one of them endangered and another one vulnerable while insufficient data are available to evaluate the conservation status of the other two forms.

Blind mole-rats are not in fact completely blind as they do possess simple eyes 1mm in diameter and located under a layer of skin and fur. They act effectively as light meters, only sensing the level of available light.

The lesser blind mole-rat was declared to be extinct in Croatia in 1984, having been present in the area of Srijem up until the 20th century, but its continued presence in Vučedol was confirmed in 2023.

One study directed towards life expectancy used this species by virtue of its incredible longevity performance, hypoxia and hypercapnia endurance, as well as cancer resistance. Looking at the fecal and skin samples of this ideal candidate, it was found that the Muribaculaceae bacterial family, known to be linked with longevity, dominated fecal samples.

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References

• Musser, G.G.; Carleton, M.D. (2005). "Superfamily Muroidea". In Wilson, D.E.; Reeder, D.M (eds.). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. pp. 894–1531. ISBN 978-0-8018-8221-0. OCLC 62265494.
• Németh A, Révay T, Hegyeli Z, Farkas J, Czabán D, Rózsás A, Csorba G 2009. Chromosomal forms and risk assessment of Nannospalax (superspecies leucodon) (Mammalia: Rodentia) in the Carpathian Basin Archived 2017-08-13 at the Wayback Machine Folia Zoologica, 58(3), 349–361.