|
Gecarcinucidae
The Gecarcinucidae are a family of true freshwater crabs. The family Parathelphusidae is now demoted to the rank of subfamily, as the Parathelphusinae, within the Gecarcinucidae. "Family" Parathelphusidae is now considered as a junior synonym. Taxonomy The Gecarcinucidae are thought to have originated in the Indian subcontinent when it was an island continent in the Paleogene, despite not being of ancient Gondwanan origins themselves (unlike other lineages that are thought to have originated in Insular India). Divergence estimates indicate that the Gecarcinucidae originate from Southeast Asian ancestors that dispersed to India during the middle Eocene, before India collided with Asia. This is thought to have occurred due to India drifting close enough to Southeast Asia to allow for biotic exchange between both regions. As the Gecarcinucidae are a freshwater group that could not disperse via marine habitats, this indicates that temporary land bridges may have formed in the Eoce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insular India
The term Insular India refers to the isolated landmass which became the Indian subcontinent. Across the latter stages of the Cretaceous and most of the Paleocene, following the breakup of Gondwana, the Indian subcontinent remained an isolated landmass as the Indian Plate drifted across the Tethys Ocean, forming the Indian Ocean. The process of India's separation from Madagascar first began 88 million years ago, but complete isolation only occurred towards the end of the Maastrichtian, a process that has been suggested to be the creation of the Deccan Traps. Soon after, the land mass moved northward rather quickly, until contact with Asia was established 55 million years ago. Even then, both landmasses did not become fully united until around 35 million years ago, and periods of isolation occurred as recently as 24 million years ago. Thus, for a period of 53 million years India has retained a degree of isolation, 11 of which it has been a complete island c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clinothelphusa
''Clinothelphusa kakoota'' is a species of crab in the family Gecarcinucidae, which is endemic to Sri Lanka. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical swamps, and rivers. It is threatened by habitat loss, and is listed as a critically endangered species on the IUCN Red List The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biol .... It is known from a single site with an area of less than . Its nearest relatives are another Sri Lankan endemic genus of crabs, '' Ceylonthelphusa''. References Crustaceans of Sri Lanka Gecarcinucidae Freshwater crustaceans of Asia Taxonomy articles created by Polbot {{crab-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Crab
Around 1,300 species of freshwater crabs are distributed throughout the tropics and subtropics, divided among eight families. They show direct development and maternal care of a small number of offspring, in contrast to marine crabs, which release thousands of planktonic larvae. This limits the dispersal abilities of freshwater crabs, so they tend to be endemic to small areas. As a result, a large proportion are threatened with extinction. Systematics More than 1,300 described species of freshwater crabs are known, out of a total of 6,700 species of crabs across all environments. The total number of species of freshwater crabs, including undescribed species, is thought to be up to 65% higher, potentially up to 2,155 species, although most of the additional species are currently unknown to science. They belong to eight families, each with a limited distribution, although various crabs from other families are also able to tolerate freshwater conditions ( euryhaline) or are secon ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parathelphusinae
''Arachnothelphusa rhadamanthysi''Cave crab, Borneo Parathelphusinae is a subfamily of freshwater crabs, which was formerly placed in the family Parathelphusidae; they are mainly found in South and Southeast Asia, but also found elsewhere in Asia and in Australia . The family is now considered as a junior synonym of the family Gecarcinucidae. The Parathelphusinae inhabit rivers, lakes and rice paddies. Some species, for example from the genus ''Somanniathelphusa'', are locally important as food, particularly in Thailand, Mizoram (India), etc. where they are an important ingredient in ''som tam''. Some others are very rare and close to extinction such as the Parathelphusa reticulata, Singapore's Swamp Forest Crab. Genera in this family are: *'' Adelaena'' *'' Arachnothelphusa'' *''Austrothelphusa'' *'' Bakousa'' *'' Bassiathelphusa'' *'' Ceylonthelphusa'' *'' Clinothelphusa'' *'' Coccusa'' *'' Currothelphusa'' *'' Esanthelphusa'' *'' Geelvinkia'' *'' Geithusa'' *'' Heterot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Esanthelphusa
''Esanthelphusa'' is a genus of freshwater crabs, found in South-East Asia Southeast Asia, also spelled South East Asia and South-East Asia, and also known as Southeastern Asia, South-eastern Asia or SEA, is the geographical south-eastern region of Asia, consisting of the regions that are situated south of mainland .... Species * '' Esanthelphusa chiangmai'' (Ng & Naiyanetr, 1993) * '' Esanthelphusa denchaii'' (Naiyanetr, 1984) * '' Esanthelphusa dugasti'' (Rathbun, 1902): Laos, Thailand, Vietnam * '' Esanthelphusa fangensis'' (Naiyanetr, 1987) * '' Esanthelphusa nani'' (Naiyanetr, 1984) * '' Esanthelphusa nimoafi'' Yeo, 2004 * '' Esanthelphusa phetchaburi'' (Ng & Naiyanetr, 1993) * '' Esanthelphusa prolatus'' (Rathbun, 1902): Vietnam References External links ** {{Taxonbar, from=Q18592369 Gecarcinucidae Freshwater crustaceans of Asia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Baratha (genus)
Bharatha People (, ) also known as Bharatakula and Paravar, is an ethnicity in the island of Sri Lanka. Earlier considered a caste of the Sri Lankan Tamils, they got classified as separate ethnic group in the 2001 census. They are descendant of Tamil speaking Paravar of Southern India who migrated to Sri Lanka under Portuguese rule. They live mainly on the western coast of Sri Lanka and mainly found in the cities of Mannar, Negombo and Colombo. Etymology Scholars derive ''Bharatha'', also pronounced as ''Parathar'', from the Tamil root word ''para'' meaning "expanse" or "sea". The word has been documented in ancient Sangam literature, describing them as maritime people of the ''Neithal'' Sangam landscape''.'' Colonial archives refer them as ''Paruwa'', a corrupted form of "Paravar". According to other scholars is ''Bharatha'' a name the community took from the Hindu epic Mahabharata, the clan of Bhāratas, who were the ancestor of the heroes in the epic, following their ori ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austrothelphusa
''Austrothelphusa'' is a genus of freshwater crab endemic to Australia, comprising the following species: *'' Austrothelphusa agassizi'' (Rathbun, 1905) *'' Austrothelphusa angustifrons'' (A. Milne-Edwards, 1869) *'' Austrothelphusa insularis'' (Colosi, 1919) *'' Austrothelphusa raceki'' (Bishop, 1963) *'' Austrothelphusa tigrina'' (Short, 1994) *'' Austrothelphusa transversa'' (von Martens, 1868) *'' Austrothelphusa valentula'' (Riek, 1951) *'' Austrothelphusa wasselli'' (Bishop, 1963) Most of these species are restricted to Queensland, but '' Austrothelphusa transversa'' is also found in New South Wales, South Australia, Northern Territory and Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to th .... These crabs grow to a carapace width of and are omnivores. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ceylonthelphusa
''Ceylonthelphusa'' is a genus of freshwater crabs endemic to Sri Lanka, where they live in moist lowland forests, swamps and rivers. Many of the species are on the IUCN Red List of threatened species, with the greatest risk factor being habitat loss Habitat destruction (also termed habitat loss and habitat reduction) is the process by which a natural habitat becomes incapable of supporting its native species. The organisms that previously inhabited the site are displaced or dead, thereby .... ''Ceylonthelphusa'' contains these species: *'' C. alpina'' Bahir & Ng, 2005 *'' C. armata'' (Ng, 1995) *''C. austrina'' (Alcock, 1909) *'' C. callista'' (Ng, 1995) *''C. cavatrix'' (Bahir, 1998) *''C. diva'' Bahir & Ng, 2005 *''C. durrelli'' Bahir & Ng, 2005 *''C. kandambyi'' Bahir, 1999 *''C. kotagama'' (Bahir, 1998) *''C. nana'' Bahir, 1999 *''C. nata'' Ng & Tay, 2001 *''C. orthos'' Ng & Tay, 2001 *''C. rugosa'' (Kingsley, 1880) *''C. sanguinea'' (Ng, 1995) *' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.JPG "Click for more on -> Freshwater Crab")
