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Day Gecko
''Phelsuma'' is a large genus of geckos in the family Gekkonidae. Species in the genus ''Phelsuma'' are commonly referred to as day geckos. Some day geckos are seriously endangered and some are common, but all ''Phelsuma'' species are CITES Appendix II listed. Little is known about trade in day geckos, but the IUCN considers it a threat to some species. Some species are captive-bred. Taxonomy The genus itself is thought to have originated anywhere between the Late Cretaceous to the mid-Eocene (43 to 75 mya), as that is when its lineage is known to have diverged from the one containing the Namaqua day gecko (''Rhoptropella''), although it is unknown how closely related both genera are. The crown group containing all recent species is thought to have originated in the early Oligocene, about 30 million years ago, with the most basal of them being the isolated Andaman day gecko (''P. andamanensis''), which diverged from all other species shortly after the crown group originated ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gold Dust Day Gecko
The gold dust day gecko (''Phelsuma laticauda'') is a diurnal species of gecko. It lives in northern Madagascar, Tanzania (Dar Es Salaam) and on the island of Comoros; it has also been introduced to Hawaii and other Pacific islands. It's typically seen in houses and various trees. The gold dust day gecko feeds on insects and nectar. It is commonly known as the mascot of GEICO Insurance, and also as the main character of the video game series '' Gex''. One subspecies is recognized (in addition to the nominate one): ''Phelsuma laticauda angularis''. Description This lizard can reach a total length of 3.9-5.1″ (10-13cm). The body colour is a bright green or yellowish green or rarely blue. Typical for this day gecko are the red speckles on the neck and the upper back. There are three rust-coloured transverse bars on the snout and head; the upper part of the skin around the eye is blue. On the lower back there are three tapering red bars. The tail is slightly flattened. The under ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lygodactylus
''Lygodactylus'' is a genus of diurnal geckos with 72 species. They are commonly referred to as dwarf geckos. They are mainly found in Africa and Madagascar although two species are found in South America. ''Lygodactylus picturatus'', the best known species, is found in Kenya and commonly known as the white-headed dwarf gecko. Recently, illegal importation from Tanzania of brightly colored (and critically-endangered), '' Lygodactylus williamsi,'' known as electric blue geckos, has been gaining attention for ''Lygodactylus'' geckos in the reptile trade. Since all trade in wild-caught ''Lygodactylus williamsi'' is illegal, shipments of these geckos are often intentionally mislabelled as ''Lygodactylus spp.'' or as '' Lygodactylus capensis''. As some customs officials have difficulty identifying members of this genus, ''Lygodactylus spp.'' identification guidehas been published online by CITES. Species Species in alphabetical order by specific name: *'' Lygodactylus angolensis' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phelsuma Dubia
''Phelsuma dubia'', also known as dull day gecko, olive day gecko, Zanzibar day gecko or green day gecko, is a diurnal species of gecko. It is about in length and lives on the western coast of Madagascar, in the Comoros, and the coast of East Africa. It typically inhabits trees and can also be found near human dwellings. The Dull day gecko feeds on insects and nectar. Scientific synonyms *''Pachydactylus dubius'' Boettger, 1881 *''Phelsuma dubia'' - Kluge, 1993 *''Phelsuma dubia'' - Glaw & Vences, 1994: 298 *''Phelsuma dubia'' - Broadley & Howell, 1991: 10 *''Phelsuma dubia'' - Rösler, 2000: 101 Description This lizard belongs to the medium-sized day geckos. It can reach a maximum length of approximately 15 cm. The body colour varies between grayish green, grayish brown and bluish green. The tail may be bright blue. A rust-coloured stripe extends from the nostril to the eye. There is a red v-shaped stripe on the snout. On the back there often are brownish or red-bric ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bay Of Bengal
The Bay of Bengal is the northeastern part of the Indian Ocean, bounded on the west and northwest by India, on the north by Bangladesh, and on the east by Myanmar and the Andaman and Nicobar Islands of India. Its southern limit is a line between Sangaman Kanda, Sri Lanka, and the north westernmost point of Sumatra, Indonesia. It is the largest water region called a bay in the world. There are countries dependent on the Bay of Bengal in South Asia and Southeast Asia. During the existence of British India, it was named as the Bay of Bengal after the historic Bengal region. At the time, the Port of Kolkata served as the gateway to the Crown rule in India. Cox's Bazar, the longest sea beach in the world and Sundarbans, the largest mangrove forest and the natural habitat of the Bengal tiger, are located along the bay. The Bay of Bengal occupies an area of . A number of large rivers flow into the Bay of Bengal: the Ganges– Hooghly, the Padma, the Brahmaputra–Yamuna, the Barak†... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andaman Islands
The Andaman Islands () are an archipelago in the northeastern Indian Ocean about southwest off the coasts of Myanmar's Ayeyarwady Region. Together with the Nicobar Islands to their south, the Andamans serve as a maritime boundary between the Bay of Bengal to the west and the Andaman Sea to the east. Most of the islands are part of the Andaman and Nicobar Islands, a Union Territory of India, while the Coco Islands and Preparis Island are part of the Yangon Region of Myanmar. The Andaman Islands are home to the Andamanese, a group of indigenous people that includes a number of tribes, including the Jarawa and Sentinelese. While some of the islands can be visited with permits, entry to others, including North Sentinel Island, is banned by law. The Sentinelese are generally hostile to visitors and have had little contact with any other people. The government protects their right to privacy. History Etymology In the 13th century, the name of Andaman appears in Late Middle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phelsuma Andamanense
The Andaman day gecko (''Phelsuma andamanensis''), also known as the Andaman Islands day gecko, is a species of gecko in the genus ''Phelsuma''. It is endemic to the Andaman Islands of India, and has recently been introduced to the Nicobar islands. It is a small, slender lizard, has a bright green colour and feeds on insects. Its range is nearly 5000 km away from the centre of the distribution area of the genus ''Phelsuma'', in Mauritius and Madagascar. Taxonomy Phylogenetic evidence indicates that ''P. andamanensis'' is the most basal extant member of the genus ''Phelsuma'', having diverged from the clade containing all the Western Indian Ocean ''Phelsuma'' species during the late Oligocene, about 27 million years ago. In its home range, an immense genetic diversity of mitochondrial haplotypes is seen among individuals, indicating that it had colonized the Andamans entirely naturally and not due to humans somehow transporting it from the Western Indian Ocean islands. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indian Ocean
The Indian Ocean is the third-largest of the world's five oceanic divisions, covering or ~19.8% of the water on Earth's surface. It is bounded by Asia to the north, Africa to the west and Australia to the east. To the south it is bounded by the Southern Ocean or Antarctica, depending on the definition in use. Along its core, the Indian Ocean has some large marginal or regional seas such as the Arabian Sea, Laccadive Sea, Bay of Bengal, and Andaman Sea. Etymology The Indian Ocean has been known by its present name since at least 1515 when the Latin form ''Oceanus Orientalis Indicus'' ("Indian Eastern Ocean") is attested, named after Indian subcontinent, India, which projects into it. It was earlier known as the ''Eastern Ocean'', a term that was still in use during the mid-18th century (see map), as opposed to the ''Western Ocean'' (Atlantic Ocean, Atlantic) before the Pacific Ocean, Pacific was surmised. Conversely, Ming treasure voyages, Chinese explorers in the Indian Oce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endolymphatic
Endolymph is the fluid contained in the membranous labyrinth of the inner ear. The major cation in endolymph is potassium, with the values of sodium and potassium concentration in the endolymph being 0.91 millimolar, mM and 154 millimolar, mM, respectively. It is also called ''Scarpa's fluid'', after Antonio Scarpa. Structure The inner ear has two parts: the bony labyrinth and the membranous labyrinth. The membranous labyrinth is contained within the bony labyrinth, and within the membranous labyrinth is a fluid called endolymph. Between the outer wall of the membranous labyrinth and the wall of the bony labyrinth is the location of perilymph. Composition Perilymph and endolymph have unique ionic compositions suited to their functions in regulating electrochemical impulses of hair cells. The electric potential of endolymph is ~80-90 mV more positive than perilymph due to a higher concentration of K compared to Na. The main component of this unique extracellular fluid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Femoral Triangle
The femoral triangle (or Scarpa's triangle) is an anatomical region of the upper third of the thigh. It is a subfascial space which appears as a triangular depression below the inguinal ligament when the thigh is flexed, abducted and laterally rotated. Structure The femoral triangle is bounded: * superiorly (also known as the base) by the inguinal ligament. * medially by the medial border of the adductor longus muscle. (Some people consider the femoral triangle to be smaller hence the medial border being at the lateral border of the adductor longus muscle.) * laterally by the medial border of the sartorius muscle. The apex of the triangle is continuous with the adductor canal. The roof is formed by the skin, superficial fascia, and deep fascia (fascia lata). The superficial fascia contains the superficial inguinal lymph nodes, femoral branch of the genitofemoral nerve, branches of the ilioinguinal nerve, superficial branches of the femoral artery with accompanying veins, and upp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vestigial
Vestigiality is the retention, during the process of evolution, of genetically determined structures or attributes that have lost some or all of the ancestral function in a given species. Assessment of the vestigiality must generally rely on comparison with homologous features in related species. The emergence of vestigiality occurs by normal evolutionary processes, typically by loss of function of a feature that is no longer subject to positive selection pressures when it loses its value in a changing environment. The feature may be selected against more urgently when its function becomes definitively harmful, but if the lack of the feature provides no advantage, and its presence provides no disadvantage, the feature may not be phased out by natural selection and persist across species. Examples of vestigial structures (also called degenerate, atrophied, or rudimentary organs) are the loss of functional wings in island-dwelling birds; the human vomeronasal organ; and the hin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lamella (zoology)
Lamellae on a gecko's foot. In surface anatomy, a lamella is a thin plate-like structure, often one amongst many lamellae very close to one another, with open space between. Aside from respiratory organs, they appear in other biological roles including filter feeding and the traction surfaces of geckos. In fish, gill lamellae are used to increase the surface area in contact with the environment to maximize gas exchange (both to attain oxygen and to expel carbon dioxide) between the water and the blood. In fish gills there are two types of lamellae, primary and secondary. The primary gill lamellae (also called gill filament) extends from the gill arch, and the secondary gill lamellae extends from the primary gill lamellae. Gas exchange primarily occurs at the secondary gill lamellae, where the tissue is notably only one cell layer thick. Furthermore, countercurrent gas exchange at the secondary gill lamellae further maximizes oxygen uptake and carbon dioxide release. See also ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rodrigues Giant Day Gecko
The Rodrigues giant day gecko (''Phelsuma gigas'') is an extinct species of day gecko. It lived on the island of Rodrigues and surrounding islands and typically dwelt on trees. The Rodrigues giant day gecko fed on insects and nectar, and, unlike most other day geckos, was apparently nocturnal in habit. Description ''Phelsuma gigas'' was one of the largest known geckoes. It reached a total length of about . The body colour was grayish or grayish brown. On the back there were irregular black spottings. The tail had some striping and was charcoal- or dark grey-coloured. The tongue had a pink colour and the ventral side of the body was light yellow. The original collected specimens that were used to describe this species have been lost. Today, only a few portions of some skeletons remain. Behaviour Leguat described the species: Distribution This species inhabited Rodrigues and surrounding islands. ''P. gigas'' was last collected in 1842 on the offshore islet of Ile aux Fregates. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
