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Glyptemys
''Glyptemys'' is a genus of turtles in the family Emydidae. It comprises two species, the bog turtle and wood turtle, both of which are endemic to North America. Until 2001, these turtles were considered members of the genus '' Clemmys'', which currently has one member, the spotted turtle. Full grown, these turtles grow to between . These turtles are semiaquatic, although this varies based on season. Their morphological characteristics make them unique from other species and unique from each other. ''Glyptemys'' turtles prefer slow moving streams and ponds, and feed on insects, plant matter, small invertebrates, and carrion. These turtles are protected throughout their range. All species in ''Glyptemys'' are considered endangered. Taxonomy The taxonomic classification of Emydidae turtles has been eventful and many schools of thought are given about how the different genera and species should be arranged. Before 2001, the bog and wood turtles were members of the genus ' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glyptemys Muhlenbergii
The bog turtle (''Glyptemys muhlenbergii'') is a critically endangered species of semiaquatic turtle in the family Emydidae. The species is endemic to the eastern United States. It was first scientifically described in 1801 after an 18th-century survey of Pennsylvania. The smallest North American turtle, its carapace measures about long when fully grown. Although the bog turtle is similar in appearance to the painted or spotted turtles, its closest relative is actually the somewhat larger wood turtle. The bog turtle can be found from Vermont in the north, south to Georgia, and west to Ohio. Diurnal and secretive, it spends most of its time buried in mud and – during the winter months – in hibernation. The bog turtle is omnivorous, feeding mainly on small invertebrates. The bog turtle is the state reptile of New Jersey. An adult bog turtle weighs on average. Its skin and shell are typically dark brown, with a distinctive orange spot on each side of the neck. Considered ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bog Turtle
The bog turtle (''Glyptemys muhlenbergii'') is a critically endangered species of semiaquatic turtle in the family Emydidae. The species is endemic to the eastern United States. It was first scientifically described in 1801 after an 18th-century survey of Pennsylvania. The smallest North American turtle, its carapace measures about long when fully grown. Although the bog turtle is similar in appearance to the painted or spotted turtles, its closest relative is actually the somewhat larger wood turtle. The bog turtle can be found from Vermont in the north, south to Georgia, and west to Ohio. Diurnal and secretive, it spends most of its time buried in mud and – during the winter months – in hibernation. The bog turtle is omnivorous, feeding mainly on small invertebrates. The bog turtle is the state reptile of New Jersey. An adult bog turtle weighs on average. Its skin and shell are typically dark brown, with a distinctive orange spot on each side of the neck. Considered thre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wood Turtle
The wood turtle (''Glyptemys insculpta'') is a species of turtle endemic to North America. It is in the genus ''Glyptemys'', a genus which contains only one other species of turtle: the bog turtle (''Glyptemys muhlenbergii'' ). The wood turtle reaches a straight carapace length of , its defining characteristic being the pyramidal shape of the scutes on its upper shell. Morphologically, it is similar to the bog turtle, spotted turtle (''Clemmys guttata''), and Blanding's turtle (''Emydoidea blandingii''). The wood turtle exists in a broad geographic range extending from Nova Scotia in the north (and east) to Minnesota in the west and Virginia in the south. In the past, it was forced south by encroaching glaciers: skeletal remains have been found as far south as Georgia. It spends a great deal of time in or near the water of wide rivers, preferring shallow, clear streams with compacted and sandy bottoms. The wood turtle can also be found in forests and grasslands, but will rarely ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glyptemys Insculpta
The wood turtle (''Glyptemys insculpta'') is a species of turtle endemic to North America. It is in the genus ''Glyptemys'', a genus which contains only one other species of turtle: the bog turtle (''Glyptemys muhlenbergii'' ). The wood turtle reaches a straight carapace length of , its defining characteristic being the pyramidal shape of the scutes on its upper shell. Morphologically, it is similar to the bog turtle, spotted turtle (''Clemmys guttata''), and Blanding's turtle (''Emydoidea blandingii''). The wood turtle exists in a broad geographic range extending from Nova Scotia in the north (and east) to Minnesota in the west and Virginia in the south. In the past, it was forced south by encroaching glaciers: skeletal remains have been found as far south as Georgia. It spends a great deal of time in or near the water of wide rivers, preferring shallow, clear streams with compacted and sandy bottoms. The wood turtle can also be found in forests and grasslands, but will rar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clemmys
''Clemmys'' is a genus of turtles currently containing a single extant species, the spotted turtle ''(Clemmys guttata)''. Taxonomy In the past, several other species were included in the genus, including a number of fossil species. DNA analysis has restricted the genus to containing only the spotted turtle. Fossil species are now restricted to the Neogene of North America as far back as the Miocene. Extant species formerly in ''Clemmys'' *Wood turtle - now ''Glyptemys insculpta'' *Bog turtle - now ''Glyptemys muhlenbergii'' *Western pond turtle - now ''Actinemys marmorata'' Fossil species *†''Clemmys hesperia'' Hay, 1903 - Pliocene *†''Clemmys owyheensis'' Brattstrom & Sturn, 1959 - Miocene (Hemphillian The Hemphillian North American Stage on the geologic timescale is the North American faunal stage according to the North American Land Mammal Ages chronology (NALMA), typically set from 10,300,000 to 4,900,000 years BP. It is usually considered t ...) References {{T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emydidae
Emydidae (Latin ''emys'' (freshwater tortoise) + Ancient Greek εἶδος (''eîdos'', “appearance, resemblance”)) is a family of testudines (turtles) that includes close to 50 species in 10 genera. Members of this family are commonly called terrapins, pond turtles, or marsh turtles. Several species of Asian box turtles were formerly classified in the family; however, revised taxonomy has separated them to a different family (Geoemydidae). As currently defined, the Emydidae are entirely a Western Hemisphere family, with the exception of two species of pond turtle. Description The upper shell (carapace) of most emydids is the shape of a low arch, although in some species, it is domed. The upper shell may have one or two ridges that run from front to the back of the animal (a projection commonly called a "keel"), or such a feature may be absent. A prominent bridge often connects the top shell to the bottom shell ( plastron). Emydids have large bottom shells, and some memb ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clemmys Guttata
The spotted turtle (''Clemmys guttata''), the only species of the genus ''Clemmys'', is a small, semi-aquatic turtle that reaches a carapace length of upon adulthood. Their broad, smooth, low dark-colored upper shell, or carapace, ranges in its exact colour from black to a bluish black with a number of tiny yellow round spots. The spotting patterning extends from the head, to the neck and out onto the limbs. Sexually mature males have a concave plastron and a long, thick tail. By contrast, sexually mature females possess a flat plastron and have a tail notable shorter and thinner than mature males. Mature males also have a dark iris and face; females typically have a yellow or orange iris and a similarly coloured face that is distinctly lighter than males. Juveniles appear female-like in this regard and at maturity males begin to develop darker features. Spotted turtles are aquatic omnivores that inhabit a variety of semi-aquatic or in other words, shallow, fresh-water areas s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spotted Turtle
The spotted turtle (''Clemmys guttata''), the only species of the genus ''Clemmys'', is a small, semi-aquatic turtle that reaches a carapace length of upon adulthood. Their broad, smooth, low dark-colored upper shell, or carapace, ranges in its exact colour from black to a bluish black with a number of tiny yellow round spots. The spotting patterning extends from the head, to the neck and out onto the limbs. Sexually mature males have a concave plastron and a long, thick tail. By contrast, sexually mature females possess a flat plastron and have a tail notable shorter and thinner than mature males. Mature males also have a dark iris and face; females typically have a yellow or orange iris and a similarly coloured face that is distinctly lighter than males. Juveniles appear female-like in this regard and at maturity males begin to develop darker features. Spotted turtles are aquatic omnivores that inhabit a variety of semi-aquatic or in other words, shallow, fresh-water areas su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emys
''Emys'' is a small genus of turtles in the family Emydidae. The genus (''sensu lato'') is endemic to Europe and North America. Species The following two species may be assigned to the genus ''Emys'' (''sensu lato''). ''Nota bene'': A binomial authority in parentheses indicates that the species was originally described in a genus other than ''Emys''. Taxonomy The eastern North American species, ''E. blandingii'', is usually separated into its own genus, ''Emydoidea''. Similarly, the western North American species, ''E. marmorata'' and ''E. pallida'', were recently moved to their own genus, ''Actinemys ''Actinemys'' is a small genus of turtles in the family Emydidae."''Actinemys'' ". The Reptile Database. www.reptile-database.or The genus is Endemism, endemic to the west coast of North America. The genus contains two species. Species The fol ...''. References ;Bibliography * * Further reading * Duméril AMC (1805). ''Zoologie analytique, ou méthode naturelle de clas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emys Orbicularis
The European pond turtle (''Emys orbicularis''), also called commonly the European pond terrapin and the European pond tortoise, is a species of long-living freshwater turtle in the family Emydidae. The species is endemic to the Western Palearctic. Subspecies The following 14 subspecies are recognized as being valid. *''Emys orbicularis capolongoi'' – Sardinian pond turtle *''Emys orbicularis colchica'' – Colchis pond turtle *''Emys orbicularis eiselti'' – Eiselt's pond turtle *'' Emys orbicularis fritzjuergenobstii'' – Obst's pond turtle *'' Emys orbicularis galloitalica'' – Italian pond turtle *'' Emys orbicularis hellenica'' – western Turkey pond turtle *'' Emys orbicularis hispanica'' – Spanish pond turtle *'' Emys orbicularis iberica'' – Kura Valley pond turtle *'' Emys orbicularis ingauna'' *''Emys orbicularis lanzai'' – Corsican pond turtle *'' Emys orbicularis luteofusca'' – central Turkey pond turtle *''Emys orbicularis occidentalis'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emys Marmorata
The Western pond turtle (''Actinemys marmorata''), also known commonly as the Pacific pond turtle is a species of small to medium-sized turtle in the family Emydidae. The species is endemic to the western coast of the United States and Mexico, ranging from western Washington state to northern Baja California. It was formerly found in Canada (in British Columbia), but in May 2002, the Canadian Species at Risk Act listed the Pacific pond turtle as being extirpated. Taxonomy and systematics Its genus classification is mixed. ''Emys'' and ''Actinemys'' were used among published sources in 2010. It was known by several names in the Indigenous languages of its range, including kʰá:wanaka: ( Northeastern Pomo), kʰa:wana ( Southern Pomo), and ʔaləšək (Lushootseed). Description The dorsal color of ''A. marmorata'' is usually dark brown or dull olive, with or without darker reticulations or streaking. The plastron is yellowish, sometimes with dark blotches in the centers of the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temperature-dependent Sex Determination
Temperature-dependent sex determination (TSD) is a type of environmental sex determination in which the temperatures experienced during embryonic/larval development determine the sex of the offspring. It is only observed in reptiles and teleost fish. TSD differs from the chromosomal sex-determination systems common among vertebrates. It is the most studied type of environmental sex determination (ESD). Some other conditions, e.g. density, pH, and environmental background color, are also observed to alter sex ratio, which could be classified either as temperature-dependent sex determination or temperature-dependent sex differentiation, depending on the involved mechanisms. As sex-determining mechanisms, TSD and genetic sex determination (GSD) should be considered in an equivalent manner, which can lead to reconsidering the status of fish species that are claimed to have TSD when submitted to extreme temperatures instead of the temperature experienced during development in the wild, si ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
