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Austroleucon
''Austroleucon'' is a genus of hooded shrimps within the family Leuconidae Leuconidae is a family (biology), family of marine hooded shrimp (order (biology), order Cumacea). The family was established by Georg Ossian Sars in his 1878 study of Mediterranean cumaceans. Description Leuconidae retain the original number .... There are currently 3 species assigned to the genus. Species * '' Austroleucon adiazetos'' * '' Austroleucon dolosolevis'' * '' Austroleucon levis'' References {{Taxonbar, from=Q18091777 Cumacea Malacostraca genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austroleucon Adiazetos
''Austroleucon'' is a genus of hooded shrimps within the family Leuconidae Leuconidae is a family (biology), family of marine hooded shrimp (order (biology), order Cumacea). The family was established by Georg Ossian Sars in his 1878 study of Mediterranean cumaceans. Description Leuconidae retain the original number .... There are currently 3 species assigned to the genus. Species * '' Austroleucon adiazetos'' * '' Austroleucon dolosolevis'' * '' Austroleucon levis'' References {{Taxonbar, from=Q18091777 Cumacea Malacostraca genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austroleucon Dolosolevis
''Austroleucon'' is a genus of hooded shrimps within the family Leuconidae. There are currently 3 species assigned to the genus. Species * ''Austroleucon adiazetos ''Austroleucon'' is a genus of hooded shrimps within the family Leuconidae Leuconidae is a family (biology), family of marine hooded shrimp (order (biology), order Cumacea). The family was established by Georg Ossian Sars in his 1878 study o ...'' * '' Austroleucon dolosolevis'' * '' Austroleucon levis'' References {{Taxonbar, from=Q18091777 Cumacea Malacostraca genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austroleucon Levis
''Austroleucon'' is a genus of hooded shrimps within the family Leuconidae. There are currently 3 species assigned to the genus. Species * ''Austroleucon adiazetos'' * ''Austroleucon dolosolevis ''Austroleucon'' is a genus of hooded shrimps within the family Leuconidae. There are currently 3 species assigned to the genus. Species * ''Austroleucon adiazetos ''Austroleucon'' is a genus of hooded shrimps within the family Leuconida ...'' * '' Austroleucon levis'' References {{Taxonbar, from=Q18091777 Cumacea Malacostraca genera ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Leuconidae
Leuconidae is a family (biology), family of marine hooded shrimp (order (biology), order Cumacea). The family was established by Georg Ossian Sars in his 1878 study of Mediterranean cumaceans. Description Leuconidae retain the original number of free thorax, thoracic somites, but do not possess a free telson. Their mandible (arthropod), mandibles are truncated Dorsum (biology), dorsally to the molar. In males, the flagellum of the second Antenna (biology), antenna reaches beyond the hindmost edge of the carapace. Their gills do not have gill plates or other supports. The endopods (interior branches) of the uropods are present on two (or more rarely one) segments. The males of almost all Leuconidae also have pleopods, typically two pairs that lack an external process on the inner ramus. In females the second antenna is greatly reduced. They have exopods (outer branches) on the maxillipeds and on the first two pereiopods, in females of some species often also on the third, and i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthropod
Arthropods (, (gen. ποδός)) are invertebrate animals with an exoskeleton, a Segmentation (biology), segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and Arthropod cuticle, cuticle made of chitin, often Mineralization (biology), mineralised with calcium carbonate. The arthropod body plan consists of segments, each with a pair of appendages. Arthropods are bilaterally symmetrical and their body possesses an exoskeleton, external skeleton. In order to keep growing, they must go through stages of moulting, a process by which they shed their exoskeleton to reveal a new one. Some species have wings. They are an extremely diverse group, with up to 10 million species. The haemocoel, an arthropod's internal cavity, through which its haemolymph – analogue of blood – circulates, accommodates its interior Organ (anatomy), organs; it has an open circulatory system. Like their exteriors, the internal or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malacostraca
Malacostraca (from New Latin; ) is the largest of the six classes of crustaceans, containing about 40,000 living species, divided among 16 orders. Its members, the malacostracans, display a great diversity of body forms and include crabs, lobsters, crayfish, shrimp, krill, prawns, woodlice, amphipods, mantis shrimp, tongue-eating lice and many other less familiar animals. They are abundant in all marine environments and have colonised freshwater and terrestrial habitats. They are segmented animals, united by a common body plan comprising 20 body segments (rarely 21), and divided into a head, thorax, and abdomen. Etymology The name Malacostraca was coined by a French zoologist Pierre André Latreille in 1802. He was curator of the arthropod collection at the National Museum of Natural History in Paris. The name comes from the Greek roots (', meaning "soft") and (', meaning "shell"). The name is misleading, since the shell is soft only immediately after moulting, and is u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cumacea
Cumacea is an order of small marine crustaceans of the superorder Peracarida, occasionally called hooded shrimp or comma shrimp. Their unique appearance and uniform body plan makes them easy to distinguish from other crustaceans. They live in soft-bottoms such as mud and sand, mostly in the marine environment. There are more than 1,500 species of cumaceans formally described. The species diversity of Cumacea increases with depth. Anatomy Cumaceans have a strongly enlarged cephalothorax with a carapace, a slim abdomen, and a forked tail. The length of most species varies from . The carapace of a typical cumacean is composed of several fused dorsal head parts and the first three somites of the thorax. This carapace encloses the appendages that serve for respiration and feeding. In most species, there are two eyes at the front side of the head shield, often merged into a single dorsal eye lobe. The five posterior somites of the thorax form the pereon. The pleon (abdomen) consists ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crustacean
Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group can be treated as a subphylum under the clade Mandibulata. It is now well accepted that the hexapods emerged deep in the Crustacean group, with the completed group referred to as Pancrustacea. Some crustaceans (Remipedia, Cephalocarida, Branchiopoda) are more closely related to insects and the other hexapods than they are to certain other crustaceans. The 67,000 described species range in size from '' Stygotantulus stocki'' at , to the Japanese spider crab with a leg span of up to and a mass of . Like other arthropods, crustaceans have an exoskeleton, which they moult to grow. They are distinguished from other groups of arthropods, such as insects, myriapods and chelicerates, by the possession of biramous (two-parted) limbs, and by th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eumalacostraca
Eumalacostraca is a subclass of crustaceans, containing almost all living malacostracans, or about 40,000 described species. The remaining subclasses are the Phyllocarida and possibly the Hoplocarida. Eumalacostracans have 19 segments (5 cephalic, 8 thoracic and 6 abdominal). This arrangement is known as the "caridoid facies", a term coined by William Thomas Calman in 1909. The thoracic limbs are jointed and used for swimming or walking. The common ancestor is thought to have had a carapace, and most living species possess one, but it has been lost in some subgroups. Caridoid facies Calman identified the following features as distinguishing eumalacostracan crustaceans: "Carapace enveloping the thoracic region; movably stalked eyes; biramous first antenna; scale-like exopod on the second antenna; natatory exopods on the thoracic limbs; elongate, ventrally flexible abdomen; tail fan formed by the lamellar rami of the uropods on either side of the telson." Classification Martin and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peracarida
The superorder Peracarida is a large group of malacostracan crustaceans, having members in marine, freshwater, and terrestrial habitats. They are chiefly defined by the presence of a brood pouch, or ''marsupium'', formed from thin flattened plates (oostegites) borne on the basalmost segments of the legs. Peracarida is one of the largest crustacean taxa and includes about 12,000 species. Most members are less than in length, but the largest is probably the giant isopod (''Bathynomus giganteus'') which can reach . The earliest known perecaridian was '' Oxyuropoda ligioides'', a fossil of which has been found dating to the Late Devonian (more than 360 mya) of Ireland. Characteristics The most obvious characteristic of the group is the marsupium in females. This brood pouch is enclosed by the large, flexible oostergites, bristly flaps which extend from the basal segments of the thoracic appendages, which form the floor of a chamber roofed by the animal's sternum. This chamber is w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
