The Caucasian salamander (Mertensiella caucasica ) is a species of stream-dwelling salamander in the family Salamandridae. This is a salamander of medium size, with a thin, elongated body. It is a relict species, endemic to the south-western Caucasus, in Georgia and Turkey. The subspecies M. c. janashvilii is found at Mt. Mtirala near Batumi and probably along the Black Sea coast.
Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal",...
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TerrestrialTerrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, snails), as compared with aquatic animals, which liv...
Oviparous animals are female animals that lay their eggs, with little or no other embryonic development within the mother. This is the reproductive...
Hibernation is a state of minimal activity and metabolic depression undergone by some animal species. Hibernation is a seasonal heterothermy charac...
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starts withThe Caucasian salamander lives along the banks of mountain brooks and small rivers with fast currents, both in the forest belt and above timberline, up to about 2400 m above sea level. The species is secretive and strictly nocturnal, and mates on land. The male uses the protuberance on the upper side of the tail for opening the female's cloaca and passes the spermatophore directly to the female. Their diets consist of invertebrates living in soil or shallow water; an important part of the diet is amphipods.
Sexual dimorphism is expressed by presence of a horn-like protuberance at the upper side of the male's tail, a characteristic recorded only in this species and Luschan's salamander; for this reason, these two species were, for a long time, unified in the same genus, Mertensiella. Mating happens in the summer. the female deposits 10–25 large eggs (0.5 mm in diameter) in hidden places in shallow water or in moist places near brooks. The larvae hatch in one to two months and hibernate one to three times before metamorphosis.
The salamander hardly has important natural enemies. The most important factor affecting it is habitat loss, caused by extensive logging in Georgia and construction works in Turkey. Large parts of the habitat of the salamander are not covered by any kind of protected areas.
