Pewzow's Toad
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''Bufotes pewzowi'' is a species of toad in the family Bufonidae. It is found in dry plains of Central Asia, the foothills and mountains of Tian Shan, Zhungar Alatau and
Pamir Mountains The Pamir Mountains are a mountain range between Central Asia and Pakistan. It is located at a junction with other notable mountains, namely the Tian Shan, Karakoram, Kunlun, Hindu Kush and the Himalaya mountain ranges. They are among the world ...
(Kazakhstan, Kyrgyzstan, Uzbekistan, and Tajikistan), the mountains and deserts of Western China and Mongolia, and probably westward to northern Afghanistan and north to Lake Balkhash in Kazakhstan and northeast
Altai Republic The Altai Republic (; russian: Респу́блика Алта́й, Respublika Altay, ; Altai: , ''Altay Respublika''), also known as Gorno-Altai Republic, and colloquially, and primarily referred to in Russian to distinguish from the neighbour ...
in Russia. The
specific name Specific name may refer to: * in Database management systems, a system-assigned name that is unique within a particular database In taxonomy, either of these two meanings, each with its own set of rules: * Specific name (botany), the two-part (bino ...
''pewzowi'' honours , a Russian geographer, cartographer, and explorer. Common names include Xinjiang toad and Pewzow's toad; when
subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...
''B. p. strauchi'' is recognized, it can be referred to as northern Xinjiang toad, while the nominotypic ''B. p. pewzowi'' then becomes southern Xinjiang toad.


Description

''Bufotes pewzowi'' is a tetraploid species that originates from
hybridization Hybridization (or hybridisation) may refer to: *Hybridization (biology), the process of combining different varieties of organisms to create a hybrid *Orbital hybridization, in chemistry, the mixing of atomic orbitals into new hybrid orbitals *Nu ...
between ''
Bufotes latastii ''Bufotes latastii'', commonly known as the Baltistan toad, Ladakh toad or vertebral-banded toad, is a species of toad in the family Bufonidae. It is found in the West Himalayan region at altitudes of from northern Pakistan to Ladakh in In ...
'' and '' Bufotes perrini''. Adult males measure and adult females in
snout–vent length Snout–vent length (SVL) is a morphometric measurement taken in herpetology from the tip of the snout to the most posterior opening of the cloacal slit (vent)."direct line distance from tip of snout to posterior margin of vent" It is the most c ...
.
Gosner stage Gosner stage is a generalized system of describing stages of embryonal and larval development in anurans (frogs and toads). The Gosner system includes 46 numbered stages, from fertilized embryo (stage 1) to the completion of metamorphosis (stage ...
35–37 tadpoles measure about in total length, of which the tail makes almost two thirds.


Habitat and conservation

''Bufotes pewzowi'' occurs in dry steppes, grasslands, semi-deserts and deserts, and in mountains from foothills through all altitudinal belts up to subalpine meadows, perhaps to over
above sea level Height above mean sea level is a measure of the vertical distance (height, elevation or altitude) of a location in reference to a historic mean sea level taken as a vertical datum. In geodesy, it is formalized as ''orthometric heights''. The comb ...
. The tadpoles develop in oases, ponds, and pools. It is a very common species that can be found in very disturbed habitat. No major threats to this species are known. It can suffer from extreme habitat modification and from collection for traditional medicine. It probably occurs in several protected areas within its range.


References

{{Taxonbar, from=Q1389199 pewzowi Amphibians of Afghanistan Frogs of China Fauna of Kazakhstan Amphibians of Mongolia Amphibians of Russia Fauna of Tajikistan Fauna of Uzbekistan Amphibians described in 1898 Taxa named by Jacques von Bedriaga Taxonomy articles created by Polbot