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Maja Capensis
''Maja capensis'', the Agulhas spider crab, is a species of crab in the family Majidae. Distribution The Agulhas spider crab is known from the west coast of Africa and round the South African coast to Durban in 2–100 m of water. Description The Agulhas spider crab may grow to . It has an orange to red carapace A carapace is a dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tortoises, the unde ... covered with short spines and protruding granules, and is often camouflaged with attached animals. It has two double-pointed projections extending between its eyes. The front margins of its carapace are serrated. References {{Taxonbar, from=Q6737363 Majoidea Crustaceans described in 1894 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arnold Edward Ortmann
Arnold Edward Ortmann (April 8, 1863 – January 3, 1927) was a Prussian-born United States naturalist and zoologist who specialized in malacology. Biography Ortmann was born in Magdeburg, Prussia on April 8, 1863. A student of Ernst Haeckel, he graduated from the University of Jena in 1885 with a Ph.D.; he had also studied at the University of Kiel and the University of Strasbourg. From 1886 on, he worked as an instructor at the University of Strasbourg. Together with Haeckel, he participated in an expedition to Zanzibar in 1890/91. Three years later, he emigrated to the United States, where he got a post as the curator of the department of invertebrate paleontology at Princeton University. He was elected to the American Philosophical Society in 1897. In 1899, he participated in the Peary Relief expedition, and one year later, he was naturalized as a U.S. citizen. In 1903, he moved to Pittsburgh. He became the curator of invertebrate zoology at the Carnegie Museum and from 191 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crab
Crabs are decapod crustaceans of the infraorder Brachyura (meaning "short tailed" in Greek language, Greek), which typically have a very short projecting tail-like abdomen#Arthropoda, abdomen, usually hidden entirely under the Thorax (arthropod anatomy), thorax. Their exoskeleton is often Sclerotization, thickened and hard. They generally have Arthropod leg, five pairs of legs, and they have "Pincers (tool), pincers" or "claws" on the ends of the frontmost pair, scientifically termed the ''chelae''. They are present in all the world's oceans, Freshwater crab, in freshwater, and Terrestrial crab, on land, often hiding themselves in small crevices or burrowing into sediment. Crabs are omnivores, feeding on a variety of food, including a significant proportion of Algae eater, algae, as well as Detritivore, detritus and other invertebrates. Crab meat, Crabs are widely consumed by humans as food, with over 1.5 million tonnes Crab fisheries, caught annually. True crabs first appeared ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Majidae
Majidae is a family (biology), family of crabs, comprising around 200 Ocean, marine species inside 52 genera, with a carapace that is longer than it is broad, and which forms a point at the front. The arthropod leg, legs can be very long in some species, leading to the name "spider crab". The exoskeleton is covered with bristles to which the crab attaches algae and other items to act as camouflage. Genera The roughly 200 extant and over 50 extinct species are divided among 52 genera in 5 subfamilies: Eurynolambrinae Števčić, 1994 *''Eurynolambrus'' H. Milne-Edwards & Lucas, 1841 Majinae Samouelle, 1819 *''Ageitomaia'' Griffin & Tranter, 1986 *''Anacinetops'' Miers, 1879 *''Choniognathus'' Rathbun, 1932 *''Cyclax (crab), Cyclax'' Dana, 1851 *''Entomonyx'' Miers, 1884 *''Eurynome (crab), Eurynome'' Leach, 1814 *''Jacquinotia'' Rathbun, 1915 *''Kasagia'' Richer de Forges & Ng, 2007 *''Kimbla'' Griffin & Tranter, 1986 *''Leptomithrax'' Miers, 1876 *''Maiopsis'' Faxon, 1893 *''Maja ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raffles Bulletin Of Zoology
''The Raffles Bulletin of Zoology'' is a peer-reviewed open-access scientific journal published by the Lee Kong Chian Natural History Museum at the National University of Singapore. Overview It covers the taxonomy, ecology, and conservation of Southeast Asian fauna Fauna (: faunae or faunas) is all of the animal life present in a particular region or time. The corresponding terms for plants and fungi are ''flora'' and '' funga'', respectively. Flora, fauna, funga and other forms of life are collectively .... Supplements are published as and when funding permits and may cover topics that extend beyond the normal scope of the journal depending on the targets of the funding agency. It was established as the ''Bulletin of the Raffles Museum'' in 1928 and renamed ''Bulletin of the National Museum of Singapore'' in 1961, before obtaining its current title in 1971. See also * List of zoology journals References Zoology journals Biannual journals Open access journals En ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Register Of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive catalogue and list of names of marine organisms. Content The content of the registry is edited and maintained by scientific specialists on each group of organism. These taxonomists control the quality of the information, which is gathered from the primary scientific literature as well as from some external regional and taxon-specific databases. WoRMS maintains valid names of all marine organisms, but also provides information on synonyms and invalid names. It is an ongoing task to maintain the registry, since new species are constantly being discovered and described by scientists; in addition, the nomenclature and taxonomy of existing species is often corrected or changed as new research is constantly being published. Subsets of WoRMS content are made available, and can have separate badging and their own home/launch pages, as "subregisters", such as th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carapace
A carapace is a dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tortoises, the underside is called the plastron. In botany, a carapace refers to the hard outer cover of a seed which protects the inner embryo. Crustaceans In crustaceans, the carapace functions as a protective cover over the cephalothorax (i.e., the fused head and thorax, as distinct from the abdomen behind). Where it projects forward beyond the eyes, this projection is called a rostrum. The carapace is calcified to varying degrees in different crustaceans. Zooplankton within the phylum Crustacea also have a carapace. These include Cladocera, ostracods, and isopods, but isopods only have a developed "cephalic shield" carapace covering the head. Arachnids In arachnids, the carapace is formed by the fusion of prosomal tergites into a single pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Annals Of The South African Museum
''African Natural History'' was a scientific journal published by Iziko Museums (Cape Town Cape Town is the legislature, legislative capital city, capital of South Africa. It is the country's oldest city and the seat of the Parliament of South Africa. Cape Town is the country's List of municipalities in South Africa, second-largest ...). It took the place of the ''Annals of the South African Museum'', which has been discontinued. Now the journal has been discontinued. External links * Natural history journals Annual journals English-language journals Academic journals established in 2005 {{biology-journal-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Majoidea
The Majoidea are a Superfamily (taxonomy), superfamily of crabs which includes the various spider crabs. Taxonomy In "''A classification of living and fossil genera of decapod crustaceans''" De Grave and colleagues divided Majoidea into six families. The classification has since been revised, with subfamilies Epialtinae and Mithracinae being elevated to families and Hymenosomatidae being moved to its own superfamily. The family composition according to the World Register of Marine Species is as follows: * Epialtidae MacLeay, 1838 * Inachidae MacLeay, 1838 * Inachoididae Dana, 1851 * Macrocheiridae Dana, 1851 * Majidae Samouelle, 1819 – "true" spider crabs * Mithracidae Balss, 1929 * Oregoniidae Garth, 1958 * Priscinachidae Breton, 2009 Notable species within the superfamily include: * Japanese spider crab (''Macrocheira kaempferi''), the largest living species of crab, found on the bottom of the Pacific Ocean. * ''Libinia emarginata'', the portly spider crab, a species of cra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
