Sayamia Germaini

	Sayamia Germaini ''Sayamia germaini'' is a species of freshwater crabs, now moved from the Parathelphusidae to the subfamily Parathelphusinae, found in Thailand, Cambodia and southern Vietnam. This crab is considered an alien invasive species to Taiwan and is included on the list of least concern arthropods In July 2016, the International Union for Conservation of Nature (IUCN) listed 4069 least concern arthropod species. Of all evaluated arthropod species, 43% are listed as least concern. The IUCN also lists 27 arthropod subspecies as least con .... References External links Freshwater Crab Information Web: ''Sayamia germaini'' (retrieved 19 August 2017) {{Taxonbar, from=Q14313949 Gecarcinucidae Freshwater crustaceans of Asia Crustaceans described in 1902 ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]
picture info	Freshwater Crabs 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'' '' Heterothe ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]
picture info	Invasive Species An invasive species otherwise known as an alien is an introduced organism that becomes overpopulated and harms its new environment. Although most introduced species are neutral or beneficial with respect to other species, invasive species adversely affect habitats and bioregions, causing ecological, environmental, and/or economic damage. The term can also be used for native species that become harmful to their native environment after human alterations to its food webfor example the purple sea urchin ('' Strongylocentrotus purpuratus'') which has decimated kelp forests along the northern California coast due to overharvesting of its natural predator, the California sea otter ('' Enhydra lutris''). Since the 20th century, invasive species have become a serious economic, social, and environmental threat. Invasion of long-established ecosystems by organisms is a natural phenomenon, but human-facilitated introductions have greatly increased the rate, scale, and geographic range ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	List Of Least Concern Arthropods In July 2016, the International Union for Conservation of Nature (IUCN) listed 4069 least concern arthropod species. Of all evaluated arthropod species, 43% are listed as least concern. The IUCN also lists 27 arthropod subspecies as least concern. No subpopulations of arthropods have been evaluated by the IUCN. This is a complete list of least concern arthropod species and subspecies as evaluated by the IUCN. Centipedes '' Mecistocephalus angusticeps'' Arachnids There are 21 arachnid species assessed as least concern. Spiders ''Argyrodes rostratus'' * Fimbriated striated burrowing spider (''Chilobrachys fimbriatus'') * Eastern Indian striated burrowing spider (''Chilobrachys hardwicki'') '' Cryptothele alluaudi'' ''Damastes validus'' * Adanson's house jumper (''Hasarius adansoni'') ''Heliophanus activus'' '' Heteroonops tetraspinosus'' ''Microdipoena elsae'' ''Myrmarachne constricta'' ''Noideattella assumptia'' ''Pelicinus marmoratus'' * Indian ornamental (''P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Freshwater Crustaceans Of Asia Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include non- salty mineral-rich waters such as chalybeate springs. Fresh water may encompass frozen and meltwater in ice sheets, ice caps, glaciers, snowfields and icebergs, natural precipitations such as rainfall, snowfall, hail/ sleet and graupel, and surface runoffs that form inland bodies of water such as wetlands, ponds, lakes, rivers, streams, as well as groundwater contained in aquifers, subterranean rivers and lakes. Fresh water is the water resource that is of the most and immediate use to humans. Water is critical to the survival of all living organisms. Many organisms can thrive on salt water, but the great majority of higher plants and most insects, amphibians, reptiles, mammals and birds need fresh water to survive. Fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]