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Melibe Rosea
''Melibe rosea'', the cowled nudibranch, is a species of sea slug, a dendronotid nudibranch, a marine gastropod mollusc in the family Tethydidae. This species is only found in South Africa. Distribution This species is endemic to the South African coast and is found from Port Nolloth to Port Alfred, usually intertidally, but occasionally to 10 m. Description The cowled nudibranch is a white to pinky-red nudibranch distinguished by its large extendable hood. Knobbly paired cerata extend down the margins of the smooth notum. The notum and cerata may have opaque white encrustations. It can grow as large as 50 mm in total length.ZSILAVECZ, G. 2007. ''Nudibranchs of the Cape Peninsula and False Bay''. Ecology The cowled nudibranch feeds on small crustacea 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 an ... [...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] |
Sander Rang
Sander Rang or Paul Charles Leonard Alexander Rang (1793, Utrecht -1844, Mayotte) was a French conchologist and interpreter of Arabic texts. He was, in 1816, one of the survivors of the sinking of the frigate ''Medusa'', on which he was an ensign. He spent a good part of his life in La Rochelle, where he published his early zoological observations, in particular in the bulletins of the Society of Natural Sciences of Charente-Maritimes.In 1841 Rang was one of the founding members of the Société des Amis des Arts now the Musée des Beaux-Arts de La Rochelle.He specialised in marine fauna notably in sea hares, cephalopods and other molluscs and on the heterogenous group known as zoophytes. Sander Rang described many new mollusc species including the sea hares ''Aplysia dactylomela'', '' Dolabrifera dolabrifera'', the cuttlefish ''Sepia hierredda'' and the land snails ''Striosubulina striatella'', '' Pleurodonte desidens '' and ''Opeas hannense''. Biography Sander Rang was b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Marine Heterobranch Gastropods Of South Africa
The list of marine heterobranch gastropods of South Africa is a list of saltwater mollusc species that form a part of the molluscan fauna of South Africa. This list does not include the land or freshwater molluscs. This is a sub-list of the list of marine gastropods of South Africa, which is in turn a sub-list of the list of marine molluscs of South Africa. Heterobranchia Architectonicidae *Variegated sundial shell '' Heliacus variegatus'' (Gmelin, 1791) (Eastern Cape to Mozambique)Branch, G.M. Griffiths, C.L. Branch, M.L. Beckley, L.E. ''Two Oceans: A guide to the marine life of southern Africa.'' 5th impression, David Philip, Cape Town, 2000. Siphonariidae - False limpets *'' Siphonaria annaea'' Tomlin, 1944 (Durban northwards) *Cape False limpet '' Siphonaria capensis'' Quoy and Gaimard (Namibia to northern KwaZulu-Natal) * '' Siphonaria compressa'' Allanson, 1958 *'' Siphonaria concinna'' Sowerby, 1824 (Cape Point to Zululand) *''Siphonaria nigerrima'' Smith, 1903 (Zul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family ( la, familia, plural ') 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". What belongs to a family—or if a described family should be recognized at all—are proposed and determined by practicing taxonomists. There are no hard rules for describing or recognizing a family, but in plants, they can be characterized on the basis of both vegetative and reproductive features of plant species. Taxonomists often take different positions about descriptions, and there may be no broad consensus across the scientific community for some time. The publishing of new data and opini ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusc
Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is estimated between 60,000 and 100,000 additional species. The proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine phylum, comprising about 23% of all the named marine organisms. Numerous molluscs also live in freshwater and terrestrial habitats. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat. The phylum is typically divided into 7 or 8 taxonomic classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurologically advanced of all invertebrates—and either the giant squid or the colossal squid is the largest known invertebrate species. The gastropods ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod
The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. There are many thousands of species of sea snails and slugs, as well as freshwater snails, freshwater limpets, and land snails and slugs. The class Gastropoda contains a vast total of named species, second only to the insects in overall number. The fossil history of this class goes back to the Late Cambrian. , 721 families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently extant with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class in the phylum, with 65,000 to 80,000 living snail and slug species. The anatomy, behavior, feeding, and re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Marine (ocean)
The ocean (also the sea or the world ocean) is the body of salt water that covers approximately 70.8% of the surface of Earth and contains 97% of Earth's water. An ocean can also refer to any of the large bodies of water into which the world ocean is conventionally divided."Ocean." ''Merriam-Webster.com Dictionary'', Merriam-Webster, |
Nudibranch
Nudibranchs () are a group of soft-bodied marine gastropod molluscs which shed their shells after their larval stage. They are noted for their often extraordinary colours and striking forms, and they have been given colourful nicknames to match, such as "clown", "marigold", "splendid", "dancer", "dragon", or "sea rabbit". Currently, about 3,000 valid species of nudibranchs are known.Ocean Portal (2017)A Collage of Nudibranch Colors Smithsonian National Museum of Natural History. Retrieved 17 April 2018. The word "nudibranch" comes from the Latin "naked" and the Ancient Greek () "gills". Nudibranchs are often casually called sea slugs, as they are a family of opistobranchs (sea slugs), within the phylum Mollusca (molluscs), but many sea slugs belong to several taxonomic groups which are not closely related to nudibranchs. A number of these other sea slugs, such as the photosynthetic ''Sacoglossa'' and the colourful Aglajidae, are often confused with nudibranchs. Distribut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Slug
Sea slug is a common name for some marine invertebrates with varying levels of resemblance to terrestrial slugs. Most creatures known as sea slugs are gastropods, i.e. they are sea snails (marine gastropod mollusks) that over evolutionary time have either completely lost their shells, or have seemingly lost their shells due to having a greatly reduced or internal shell. The name "sea slug" is most often applied to nudibranchs, as well as to a paraphyletic set of other marine gastropods without obvious shells. Sea slugs have an enormous variation in body shape, color, and size. Most are partially translucent. The often bright colors of reef-dwelling species implies that these animals are under constant threat of predators, but the color can serve as a warning to other animals of the sea slug's toxic stinging cells (nematocysts) or offensive taste. Like all gastropods, they have small, razor-sharp teeth, called radulas. Most sea slugs have a pair of rhinophores—sensory te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. 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. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists 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. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Melibe
''Melibe'' is a genus of sea slugs, nudibranchs, marine gastropod mollusks in the family Tethydidae. Most nudibranchs are carnivores, but their prey is usually sessile or slow-moving animals such as sponges or bryozoans. In contrast, ''Melibe'' is an active predator which traps fast-moving free-swimming animals such as small crustaceans, using its extendable oral hood Species Species within the genus ''Melibe'' include 17 valid species: ''Species inquirenda In biological classification, a ''species inquirenda'' is a species of doubtful identity requiring further investigation. The use of the term in English-language biological literature dates back to at least the early nineteenth century. The term t ...'': * '' Melibe capucina'' Bergh, 1875 * '' Melibe lonchocera'' (E. von Martens, 1879) * '' Melibe ocellata'' Bergh, 1888 References Further reading * Gosliner, T.M. 1987. ''Nudibranchs of Southern Africa'' External links iNaturalist {{Taxonbar, from=Q3854211 Tet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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