Leachia

	Leachia ''Leachia'' is a genus containing eight species of glass squids. The genus was formerly divided into two subgenera: ''Leachia'' and ''Pyrgopsis'', but is no longer. Members of this genus live in tropical and sub-tropical waters worldwide. Description The mantle is up to 20 cm long in the largest species. ''Leachia'' are characterised by the presence of two parallel ridges bearing raised cartilage spikes, which run along the underside of the body near the head. They have large round fins, which often constitute 20–30% of the entire mantle length. Like most glass squids, members of this genus possess a ring of light organs around their eyes. Bioluminescent cells produce light that cancels the shadow cast by their large eyes. Typical of cranchiid squids, juvenile ''Leachia'' species have stalked eyes. As they mature, females develop light organs on the ends of their third arm pairs. These are thought to be used in mating displays to attract males. Species * ''Leachia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Leachia Rynchophorus ''Leachia'' is a genus containing eight species of glass squids. The genus was formerly divided into two subgenera: ''Leachia'' and ''Pyrgopsis'', but is no longer. Members of this genus live in tropical and sub-tropical waters worldwide. Description The mantle is up to 20 cm long in the largest species. ''Leachia'' are characterised by the presence of two parallel ridges bearing raised cartilage spikes, which run along the underside of the body near the head. They have large round fins, which often constitute 20–30% of the entire mantle length. Like most glass squids, members of this genus possess a ring of light organs around their eyes. Bioluminescent Bioluminescence is the production and emission of light by living organisms. It is a form of chemiluminescence. Bioluminescence occurs widely in marine vertebrates and invertebrates, as well as in some Fungus, fungi, microorganisms including ... cells produce light that cancels the shadow cast by their large ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Leachia Pacifica ''Leachia pacifica'' is a species of squid in the family Cranchiidae., first described by Arturo Issel in 1908. It is mainly found in the Subtropics. No subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ... are listed in the Catalogue of Life. References Animals described in 1908 Squid {{Squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Leachia Cyclura ''Leachia cyclura'' is a species of cephalopods belonging to the family Cranchiidae The family Cranchiidae comprises the approximately 60 species of glass squid, also known as cockatoo squid, cranchiid, cranch squid, or bathyscaphoid squid. Cranchiid squid occur in surface and midwater depths of open oceans around the world. The .... The species is found in Northern America. References Squid {{Improve categories, date=February 2022 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Leachia Danae ''Leachia danae'' is a species of glass squid first described in 1931 in the Eastern tropical Pacific Ocean. It has since also been observed off the Mexican Pacific coast. References External links Squid Molluscs described in 1931 {{squid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Alphonse Trémeau De Rochebrune Alphonse Amédée Trémeau de Rochebrune was a French botanist, malacologist and a zoologist. He was born on 18 September 1836 in Saint-Savin, and died on 23 April 1912 in Paris. Biography The son of a curator of the Museum of Angoulême, he became a military surgeon and reached the rank of adjutant in 1870. After obtaining his doctorate in 1874, he travelled to Saint-Louis in Senegal. In 1878, he joined the Muséum national d'histoire naturelle as an assistant in the Laboratory of Anthropology, and then replaced Victor Bertin (1849–1880), as assistant naturalist in the Laboratory of molluscs, worms and zoophytes, after Bertin's death. He held this post until his retirement in 1911. He addressed, in one hundred fifty publications, to a variety of subjects: from geology to paleontology, botany to malacology. These include his 1860 catalogue of wild flowering plants in the Department of Charente, co-written with Savatier Alexander. From 1882 to 1883, Rochebrune took part in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Cranchiid The family Cranchiidae comprises the approximately 60 species of glass squid, also known as cockatoo squid, cranchiid, cranch squid, or bathyscaphoid squid. Cranchiid squid occur in surface and midwater depths of open oceans around the world. They range in mantle length from to over , in the case of the colossal squid. The common name, glass squid, derives from the transparent nature of most species. Cranchiid squid spend much of their lives in partially sunlit shallow waters, where their transparency provides camouflage. They are characterised by a swollen body and short arms, which bear two rows of suckers or hooks. The third arm pair is often enlarged. Many species are bioluminescent organisms and possess light organs on the undersides of their eyes, used to cancel their shadows. Eye morphology varies widely, ranging from large and circular to telescopic and stalked. A large, fluid-filled chamber containing ammonia solution is used to aid buoyancy. This buoyancy syste ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Bioluminescence Bioluminescence is the production and emission of light by living organisms. It is a form of chemiluminescence. Bioluminescence occurs widely in marine vertebrates and invertebrates, as well as in some fungi, microorganisms including some bioluminescent bacteria, and terrestrial arthropods such as fireflies. In some animals, the light is bacteriogenic, produced by symbiotic bacteria such as those from the genus '' Vibrio''; in others, it is autogenic, produced by the animals themselves. In a general sense, the principal chemical reaction in bioluminescence involves a light-emitting molecule and an enzyme, generally called luciferin and luciferase, respectively. Because these are generic names, luciferins and luciferases are often distinguished by the species or group, e.g. firefly luciferin. In all characterized cases, the enzyme catalyzes the oxidation of the luciferin. In some species, the luciferase requires other cofactors, such as calcium or magnesium ions, and s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]