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Reticulidia Halgerda
''Reticulidia halgerda'' is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Phyllidiidae.Bouchet P. & Rocroi J.-P. (Ed.); Frýda J., Hausdorf B., Ponder W., Valdes A. & Warén A. 2005. ''Classification and nomenclator of gastropod families''. Malacologia: International Journal of Malacology, 47(1-2). ConchBooks: Hackenheim, Germany. . ISSN 0076-2997. 397 pp. http://www.vliz.be/Vmdcdata/imis2/ref.php?refid=78278 Description ''Reticulidia halgerda'' grows to a maximum length of 7.0 cm. This species is different externally and internally from species in the ''Phyllidia'' and '' Phyllidiopsis'' genera, both of which also have yellow coloration and tuberculate ridges. ''Reticulidia halgerda'' does not have spiculose tubercles but instead has reticulate ridges on the notum that are smooth. '' Phyllidia ocellata'', '' Phyllidia tula'', ''Phyllidia varicosa'', and '' Phyllidia coelestis'' all have a different foregut The foregut is th ... [...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] |
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] |
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] |
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, |
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] |
Mollusk
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 gas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllidiidae
Phyllidiidae is a family of sea slugs, dorid nudibranchs, marine gastropod mollusks in the superfamily Phyllidioidea. This family is within the clade Doridacea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005). Distribution Most species occur in the tropical Indo-Pacific region, but a few species have been found in the tropical Atlantic Ocean and in the Mediterranean. Description The mantle of these oval nudibranchs is flattened dorsoventrally and its dorsal surface is covered with hard, colored tubercles. This mantle is decorated with contrasting colors and patterns as warning signals to predators. The lamellate rhinophores can be retracted. Like other dorid nudibranchs, all species have a dorsal anus, except for the species in the genus ''Fryeria'' where the anus is posteroventral and protrusible. In contrast with the other nudibranchs from the clade Doridacea, the species in this family lack buccal armature, i. e. radulae and jaws. The gill leaflets a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllidia
''Phyllidia'' is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod molluscs in the family Phyllidiidae.Bouchet, P.; Gofas, S. (2012)''Phyllidia''.Accessed through: World Register of Marine Species on 2012-06-07. Species Species in the genus ''Phyllidia'' include:Brunckhorst D.J. (1993) ''The systematics and phylogeny of phyllidiid nudibranchs (Doridoidea)''. Records of the Australian Museum suppl. 16: 1-108. * '' Phyllidia alyta'' Yonow, 1996 * '' Phyllidia babai'' Brunckhorst, 1993 * '' Phyllidia carlsonhoffi'' Brunckhorst, 1993 * '' Phyllidia coelestis'' Bergh, 1905 * '' Phyllidia elegans'' Bergh, 1869 * '' Phyllidia exquisita'' Brunckhorst, 1993 * ''Phyllidia flava'' Aradas, 1847 * '' Phyllidia goslineri'' Brunckhorst, 1993 * '' Phyllidia guamensis'' (Brunckhorst, 1993) * '' Phyllidia haegeli'' (Fahrner & Beck, 2000) * '' Phyllidia koehleri'' Perrone, 2000 * '' Phyllidia larryi'' (Brunckhorst, 1993) * '' Phyllidia madangensis'' Brunckhorst, 1993 * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllidiopsis
''Phyllidiopsis'' is a genus of sea slugs, dorid nudibranchs, shell-less marine gastropod molluscs and is the largest genus within the family Phyllidiidae.Bouchet, P.; Gofas, S. (2012)''Phyllidiopsis''.Accessed through: World Register of Marine Species on 2012-06-07. Description The species in this genus differ from the other genera in this family by possessing an elongate foregut and fused oral tentacles. Distribution These nudibranchs can be found in the tropical Indo-Pacific region, the eastern Pacific region, in the Red Sea, in the Caribbean Sea and a few in the Northwest Atlantic Ocean. About half of the described species can be found in deep waters. Among these deep-water sea slugs, there is a group of white species, lacking all contrasting colors. Species There are presently about 30 species in the genus ''Phyllidiopsis'' including : * ''Phyllidiopsis annae'' Brunckhorst, 1993Brunckhorst, D. J. (1993). The systematics and phylogeny of phyllidiid nudibranchs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllidia Ocellata
''Phyllidia ocellata'' is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Phyllidiidae.Bouchet, P. (2015)''Phyllidia ocellata'' Cuvier, 1804.In: MolluscaBase (2015). Accessed through: World Register of Marine Species on 2016-11-01 Distribution This species is probably confined to the central Indo-West Pacific Ocean. It is common in Indonesia and occurs from Malaysia to the Solomon Islands. Description This animal can measure up to 35 mm in length. It has been confused with '' Phyllidia japonica'', '' Phyllidia multituberculata'' and '' Phyllidia undula'' and a number of other species by most workers.Yonow, N. 1996. Systematic Revision of the Family Phyllidiidae in the Indian Ocean Province: Part 1 (Opisthobranchia: Nudibranchia: Doridoidea). Journal of Conchology 35: 483-516. This nudibranch has an orange-brown dorsum interrupted by large white or grey, compound, stalked tubercles. These tubercles are distributed alo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllidia Tula
''Phyllidia tula'' is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusk in the family Phyllidiidae. Distribution This species was described from the Ellice Islands, now known as Tuvalu. Brunckhorst examined the type material kept at the US National Museum and additional material from Guam and redescribed the species in greater detail. It has also been reported from the Marshall Islands.Johnson S. & Johnson, J., (2016)''Phyllidia tula'' Marcus & Marcus, 1970Underwater Kwajalein. Description This nudibranch has a black dorsum with large yellow-capped tubercles surrounded by pale blue or translucent white rings. Towards the edge of the mantle these tubercles become small and scattered, sometimes without any yellow caps. The rhinophores are yellow or orange. A distinctive feature is the presence of small, yellow-capped, tubercles at the edges of some of the large tubercles in the middle of the back, and scattered smaller tubercles between the l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phyllidia Varicosa
''Phyllidia varicosa'' is a species of sea slug, a dorid nudibranch, a shell-less marine gastropod mollusc in the family Phyllidiidae.Bouchet, P. (2015)''Phyllidia varicosa'' Lamarck, 1801.In: MolluscaBase (2015). Accessed through: World Register of Marine Species on 2016-11-15. Distribution This species is widely distributed throughout the Indo-West Pacific Oceans including the central Pacific and the Red Sea. Description This is a large species growing to at least 115 mm. It can be distinguished by its numerous (3 to 6), longitudinal, tuberculate notal ridges. The ridge and bases of the tubercles are a blue-grey colour. The tubercles are capped in yellow. The foot sole has a black longitudinal foot stripe. The rhinophoral clavus possesses 27 to 30 lamellae.Rudman, W.B., 1999 (January 12''Phyllidia varicosa'' Lamarck, 1801. n/nowiki> Sea Slug Forum. Australian Museum, Sydney. Mimicry Juveniles of the sea cucumber, '' Pearsonothuria graeffei'' are brightly coloured an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
