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Dipsas Alternans
''Dipsas alternans'', Jan's snail-eater, is a non-venomous snake found in Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population .... References Dipsas Snakes of Brazil Endemic reptiles of Brazil Reptiles described in 1885 Taxa named by Johann Gustav Fischer {{Dipsadinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Gustav Fischer
Johann Gustav Fischer (1 March 1819, Hamburg – 27 January 1889) was a German herpetologist. He served as an instructor at the Johanneum in Hamburg, and was associated with the city's ''Naturhistorisches Museum'', working extensively with its herpetological and ichthyological collections. He was the binomial author of numerous herpetological species, and has several species named in his honor: *"Fischer's cat snake" ('' Toxicodryas pulverulenta''), 1856. *" Fischer's chameleon" (''Kinyongia fischeri)'', described by Anton Reichenow in 1887. *"Fischer's dwarf gecko" ('' Lygodactylus fischeri)'', described by George Albert Boulenger in 1890. *"Fischer’s snail-eating snake" ('' Tropidodipsas fischeri)'', described by George Albert Boulenger in 1894. *"Fischer's thick-toed gecko" ('' Pachydactylus laevigatus''), 1888. In the field of ichthyology, he described the genera ''Sclerocottus'' (Cottidae) and ''Gymnelichthys'' (Zoarcidae). Published works Many of his scientific papers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Venomous
Venom or zootoxin is a type of toxin produced by an animal that is actively delivered through a wound by means of a bite, sting, or similar action. The toxin is delivered through a specially evolved ''venom apparatus'', such as fangs or a stinger, in a process called '' envenomation''. Venom is often distinguished from ''poison'', which is a toxin that is passively delivered by being ingested, inhaled, or absorbed through the skin, and '' toxungen'', which is actively transferred to the external surface of another animal via a physical delivery mechanism. Venom has evolved in terrestrial and marine environments and in a wide variety of animals: both predators and prey, and both vertebrates and invertebrates. Venoms kill through the action of at least four major classes of toxin, namely necrotoxins and cytotoxins, which kill cells; neurotoxins, which affect nervous systems; myotoxins, which damage muscles; and haemotoxins, which disrupt blood clotting. Venomous animals caus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snake
Snakes are elongated limbless reptiles of the suborder Serpentes (). Cladistically squamates, snakes are ectothermic, amniote vertebrates covered in overlapping scales much like other members of the group. Many species of snakes have skulls with several more joints than their lizard ancestors and relatives, enabling them to swallow prey much larger than their heads ( cranial kinesis). To accommodate their narrow bodies, snakes' paired organs (such as kidneys) appear one in front of the other instead of side by side, and most only have one functional lung. Some species retain a pelvic girdle with a pair of vestigial claws on either side of the cloaca. Lizards have independently evolved elongate bodies without limbs or with greatly reduced limbs at least twenty-five times via convergent evolution, leading to many lineages of legless lizards. These resemble snakes, but several common groups of legless lizards have eyelids and external ears, which snakes lack, althoug ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazil
Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population, seventh-largest by population, with over 212 million people. The country is a federation composed of 26 Federative units of Brazil, states and a Federal District (Brazil), Federal District, which hosts the capital, Brasília. List of cities in Brazil by population, Its most populous city is São Paulo, followed by Rio de Janeiro. Brazil has the most Portuguese-speaking countries, Portuguese speakers in the world and is the only country in the Americas where Portuguese language, Portuguese is an Portuguese-speaking world, official language. Bounded by the Atlantic Ocean on the east, Brazil has a Coastline of Brazil, coastline of . Covering roughly half of South America's land area, it Borders of Brazil, borders all other countries and ter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dipsas
''Dipsas'' is a genus of nonvenomous New World snakes in the subfamily Dipsadinae of the family Colubridae. The genus ''Sibynomorphus'' has been moved here. Species of the genus ''Dipsas'' are known as snail-eaters. Taxonomy The genus ''Dipsas'' includes over 30 distinct species. The following species are recognized as being valid. *'' Dipsas albifrons'' – Sauvage's snail-eater *'' Dipsas alternans'' – Jan's snail-eater *'' Dipsas andiana'' *'' Dipsas aparatiritos'' *'' Dipsas articulata'' – American snail-eater *'' Dipsas baliomelas'' *'' Dipsas bicolor'' – two-colored snail-eater *'' Dipsas bobridgelyi'' – Bob Ridgely's snail-eater *'' Dipsas bothropoides'' *''Dipsas brevifacies'' – snail-eating thirst snake, short-faced snail-eater *'' Dipsas bucephala'' – neotropical snail-eater *'' Dipsas catesbyi'' – Catesby's snail-eater *'' Dipsas chaparensis'' *'' Dipsas cisticeps'' – neotropical snail-eater *'' Dipsas copei'' *'' Dipsas elegans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snakes Of Brazil
Snakes are elongated Limbless vertebrate, limbless reptiles of the suborder Serpentes (). Cladistically Squamata, squamates, snakes are ectothermic, amniote vertebrates covered in overlapping Scale (zoology), scales much like other members of the group. Many species of snakes have skulls with several more joints than their lizard ancestors and relatives, enabling them to swallow prey much larger than their heads (cranial kinesis). To accommodate their narrow bodies, snakes' paired organs (such as kidneys) appear one in front of the other instead of side by side, and most only have one functional lung. Some species retain a pelvic girdle with a pair of vestigial claws on either side of the cloaca. Lizards have independently evolved elongate bodies without limbs or with greatly reduced limbs at least twenty-five times via convergent evolution, leading to many lineages of legless lizards. These resemble snakes, but several common groups of legless lizards have eyelids and external ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Reptiles Of Brazil
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or becomin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reptiles Described In 1885
Reptiles, as commonly defined, are a group of tetrapods with an ectothermic metabolism and amniotic development. Living traditional reptiles comprise four orders: Testudines, Crocodilia, Squamata, and Rhynchocephalia. About 12,000 living species of reptiles are listed in the Reptile Database. The study of the traditional reptile orders, customarily in combination with the study of modern amphibians, is called herpetology. Reptiles have been subject to several conflicting taxonomic definitions. In Linnaean taxonomy, reptiles are gathered together under the class Reptilia ( ), which corresponds to common usage. Modern cladistic taxonomy regards that group as paraphyletic, since genetic and paleontological evidence has determined that birds (class Aves), as members of Dinosauria, are more closely related to living crocodilians than to other reptiles, and are thus nested among reptiles from an evolutionary perspective. Many cladistic systems therefore redefine Reptilia as a cla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
