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Dahl's Whip Snake
''Platyceps najadum'', also known commonly as Dahl's whip snake, the slender whip snake, and the Zagros whip snake, is a species of snake in the family Colubridae. The species is native to Eurasia. Four subspecies are recognized as being valid. Taxonomy ''P. najadum'' was first described by Karl Eichwald in 1831, as ''Tyria najadum''. Geographic range ''P. najadum'' is found in the Balkans, Aegean, Cyprus, the Mid-East, and as far as Turkmenistan and the Caucasus Mountains. Habitat ''P. najadum'' occurs in dry and xeric environments in a wide range of habitats: in desert and rocky land, in forests, woodland scrub, and agricultural land from sea level to altitude. It is commonly found in fields, and seen crushed on roads. Description ''P. najadum'' has a slim body, and is rarely over a metre (39 inches) in total length (including tail). Conservation status ''P. najadum'' is threatened by direct persecution, forest fires and intensive agriculture, where its range interac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karl Eichwald
Karl Eduard von Eichwald (russian: Эдуард Иванович Эйхвальд, ''Eduard Ivanovich Eykhvald''; 4 July 1795, in Mitau, Courland Governorate – 10 November 1876, in Saint Petersburg) was a Baltic German geologist, physician, and Natural history, naturalist, who worked in Russian Empire, Russia. Career Eichwald was a Baltic German born at Mitau in Courland Governorate. He became a doctor of medicine and professor of zoology in Kazan in 1823; four years later professor of zoology and comparative anatomy at Vilnius; in 1838 professor of zoology, mineralogy and medicine at St. Petersburg; and finally, professor of palaeontology in the institute of mining, mines in that city. He travelled much in the Russian Empire, and was a keen observer of its natural history and geology. He died at St. Petersburg. Eichwald was a supporter of Darwinism. Works His published works include ''Reise auf dem Caspischen Meere und in den Caucasus'', 2 vols. (Stuttgart and Tübingen, 1834 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ilya Darevsky
Ilya Sergeyevich Darevsky (russian: Илья Сергеевич Даревский, 18 December 1924 – 8 August 2009) was a Soviet Russian zoologist-herpetologist and a corresponding member of the Russian Academy of Sciences. During his career he described 34 species of amphibians and reptiles. '' Darevskia'', a genus of Caucasian rock lizards, is named after him. Early life and military career Darevsky was born on 18 December 1924 in Kiev. He was interested in amphibians and reptiles since his childhood, when he met Sergey A. Chernov, a herpetologist from Leningrad. During World War II, he was wounded twice and was decorated with the Order of the Red Star and Order of the Great Patriotic War of the 1st degree.Darevsky IS (2014My Biography ''Trudy Zoologicheskogo Instituta RAN''. 318(4): 292–325. (in Russian, with an abstract in English). Scientific career After the war, Darevsky was recruited to join the Biology Faculty of the Moscow State University, from which he graduat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nominotypical 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 have subspecies, but for those that do there must be at least two. Subspecies is abbreviated subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are"). In zoology, under the International Code of Zoological Nomenclature, the subspecies is the only taxonomic rank below that of species that can receive a name. In botany and mycology, under the International Code of Nomenclature for algae, fungi, and plants, other infraspecific ranks, such as variety, may be named. In bacteriology and virology, under standard bacterial nomenclature and virus nomenclature, there are recommendations but not strict requirements for recognizing other important infraspecific ranks. A taxonomist decides whether ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clutch (eggs)
__NOTOC__ A clutch of eggs is the group of eggs produced by birds, amphibians, or reptiles, often at a single time, particularly those laid in a nest. In birds, destruction of a clutch by predators (or removal by humans, for example the California condor breeding program) results in ''double-clutching''. The technique is used to double the production of a species' eggs, in the California condor case, specifically to increase population size. The act of putting one's hand in a nest to remove eggs is known as "dipping the clutch". Size Clutch size differs greatly between species, sometimes even within the same genus. It may also differ within the same species due to many factors including habitat, health, nutrition, predation pressures, and time of year. Clutch size variation can also reflect variation in optimal reproduction effort. In birds, clutch size can vary within a species due to various features (age and health of laying female, ability of male to supply food, and abundan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
