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Themisto (crustacean)
''Themisto'' is a genus of marine amphipods in the family Hyperiidae. Their distribution is Cosmopolitan distribution, cosmopolitan. Ecological role ''Themisto'' are obligate carnivores. ''Themisto gaudichaudii'' has been found to feed opportunistically on copepods and chaetognaths, as juveniles also on diatoms. ''Themisto'' are important prey in many food webs. For example, ''Themisto gaudichaudii'' reaches high densities (up to 61 individuals/m3) in Kerguelen waters and is a major food item for blue petrels, thin-billed prions, Antarctic prions, common diving petrels, and southern rockhopper penguins. In the Barents Sea, ''Themisto libellula'' is very abundant in the Arctic waters and important food item for Atlantic cod, cod, Boreogadus saida, polar cod, and marine mammals near the ice edge, whereas ''Themisto abyssorum'' is important in Atlantic/boreal waters. Life history ''Themisto gaudichaudii'' matures at lengths between or more. Reproduction can be nearly continuous bu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Themisto Gaudichaudii
''Themisto gaudichaudii'' is an amphipod crustacean of the suborder Hyperiidea. Taxonomic history ''Themisto gaudichaudii'' was first described by Félix Édouard Guérin-Méneville in 1825. Since the genus was then monotypic, ''T. gaudichaudii'' became the type species of the genus ''Themisto''. The type material was collected "'" (off the coast of the Falkland Islands The Falkland Islands (; ), commonly referred to as The Falklands, is an archipelago in the South Atlantic Ocean on the Patagonian Shelf. The principal islands are about east of South America's southern Patagonian coast and from Cape Dub ...). References {{Portal bar, Crustaceans, Marine life Hyperiidea Amphipods of the Atlantic Ocean Crustaceans described in 1825 Taxa named by Félix Édouard Guérin-Méneville ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Themisto Libellula
''Themisto libellula'' is a marine amphipod of the family Hyperiidae. The species lives for 2 to 3 years, and grows up to over its lifetime. They are found in large quantities in Arctic water. In the summer, they eat more lipids to store as fuel for the winter. During the mid-winter, they eat copepods, such as '' Calanus finmarchicus''. ''T. libellula'' is eaten by cod, polar cod, and mammals at the ice edge. In the early 2000s, the population of the species began to decrease; these effects rippled through the food chain. The levels later rose in cool years, and ''T. libellula'' have moved south of the Arctic Circle. They have been observed in mass mortalities A mass mortality event (MME) is an incident that kills a vast number of individuals of a single species in a short period of time. The event may put a species at risk of extinction or upset an ecosystem. This is distinct from the mass die-off asso ..., where millions of ''T. libellula'' wash up dead on the coast. Referen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hyperiidea
The Hyperiidea is one ot the six suborders of amphipods, small aquatic crustaceans. Unlike some other suborders of Amphipoda, hyperiids are exclusively marine and do not occur in fresh water. Hyperiids are distinguished by their large eyes and planktonic habitat. Most species of hyperiids are parasites or predators of salps and jellyfish in the plankton, although '' Themisto gaudichaudii'' and a few relatives are free-swimming predators of copepods and other small planktonic animals. Gallery Taxonomy According to World Amphipoda Database, 284 species of Hyperiidea are known in 2025. Some controversy exists as to the number of families in the Hyperiidea, being given as between 20 and 23 depending on whether groups like the Thaumatopsidae are considered distinct or not. The taxonomy of Hyperiidea currently accepted by the ''World Register of Marine Species'' is as follows: ;Infraorder Physocephalata Bowman & Gruner, 1973 * Parvorder Physocephalatidira Bowman & Gruner, 1973 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CSIRO Publishing
CSIRO Publishing is an Australian-based science and technology publisher. It publishes books, journals and magazines across a range of scientific disciplines, including agriculture, chemistry, plant and animal sciences, natural history and environmental management. It also produces interactive learning modules for primary school students and provides writing workshops for researchers. CSIRO Publishing operates within the Commonwealth Scientific and Industrial Research Organisation (CSIRO). It was established as a stand-alone business unit in 1995. Books CSIRO Publishing publishes books in a number of categories, including: * Animals: behaviour; birds; domesticated; ecology and management; field guides; fish; genetics and evolution; health and welfare; invasive; invertebrates; mammals and marsupials; reproduction and physiology; reptiles and amphibians; and wildlife. * Built Environment: architecture; building; codes and standards; engineering; landscape architecture; and plan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Themisto Pacifica
In Greek mythology, Themisto (; Ancient Greek: Θεμιστώ) was a Thessalin princess as the daughter of King Hypseus of LapithsApollodorus, 1.9.2 and the naiad Chlidanope. Her name is derived from the Ancient Greek word: "θεμιστος" which means "belonging to the law", or "belonging to the customs". Family Themisto's sisters were Cyrene, AlcaeaScholia on Pindar, ''Pythian Ode'' 9.31 and Astyagyia. She was the third and last wife of Athamas, a Boeotian king. According to some sources, the couple had four children: Leucon, Erythrius, Schoeneus, and Ptous. In other sources, there were but two: Sphincius and Orchomenus, or else Schoeneus and Leucon. Some say that the father of Leucon was Poseidon (see also Leuconoe). Mythology Themisto intended to kill her husband's children by his previous wife, but accidentally slew her own sons. This was the subject of a non-surviving tragedy by Euripides, retold by Hyginus as follows. Athamas married Themisto as he believed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brood Pouch (Peracarida)
The marsupium or brood pouch, is a characteristic feature of Peracarida, including the orders Amphipoda, Isopoda, and Cumacea Cumacea is an order (biology), 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. .... It is an egg chamber formed by oostegites, which are appendages that are attached to the coxae (first segment) of the first pereiopods. Females lay their eggs directly into the brood chamber, and the young will develop there, undergoing several moults before emerging as miniature adults referred to as mancae. Males have no marsupium. References {{malacostraca-stub Crustacean anatomy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Themisto Abyssorum
In Greek mythology, Themisto (; Ancient Greek: Θεμιστώ) was a Thessalin princess as the daughter of King Hypseus of LapithsApollodorus, 1.9.2 and the naiad Chlidanope. Her name is derived from the Ancient Greek word: "θεμιστος" which means "belonging to the law", or "belonging to the customs". Family Themisto's sisters were Cyrene, AlcaeaScholia on Pindar, ''Pythian Ode'' 9.31 and Astyagyia. She was the third and last wife of Athamas, a Boeotian king. According to some sources, the couple had four children: Leucon, Erythrius, Schoeneus, and Ptous. In other sources, there were but two: Sphincius and Orchomenus, or else Schoeneus and Leucon. Some say that the father of Leucon was Poseidon (see also Leuconoe). Mythology Themisto intended to kill her husband's children by his previous wife, but accidentally slew her own sons. This was the subject of a non-surviving tragedy by Euripides, retold by Hyginus as follows. Athamas married Themisto as he believed ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Boreogadus Saida
''Boreogadus saida'', known as the polar cod or as the Arctic cod, is a fish of the cod family Gadidae, related to the true cod (genus ''Gadus''). Another fish species for which both the common names Arctic cod and polar cod are used is ''Arctogadus glacialis''. Description Arctic cod have slender bodies, deeply forked tails, a projecting mouth, and a small chin barbel. They have three dorsal fins and two anal fins, which are all separate from each other. The caudal fin is concave, the pectoral fins reach beyond the end of the first dorsal fin, and the pelvic fins are elongated rays. The lateral line is interrupted along the entire length of the fish. They are plainly coloured with brownish spots and a silvery body. Greenlandic Inuit fishers have described two morphotypes of Arctic cod, a lighter-colored variety and a darker-colored variety. Arctic cod are frequently misidentified as polar cod (Arctogadus glacialis) during their larval and early juvenile stages. The species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atlantic Cod
The Atlantic cod (: cod; ''Gadus morhua'') is a fish of the family Gadidae, widely consumed by humans. It is also commercially known as '' cod'' or ''codling''.''Atlantic Cod'' . Seafood Portal. In the western Atlantic Ocean, cod has a distribution north of Cape Hatteras, , and around both coasts of and the ; in the easte ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
