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Nudibranch
Nudibranchs () are a group of soft-bodied marine gastropod molluscs, belonging to the order Nudibranchia, that 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", and "sea rabbit". About 3,000 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 opisthobranchs (sea slugs), within the phylum Mollusca (molluscs), but many sea slugs belong to several taxonomic groups that 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 wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathydeviidae
''Bathydevius'' (Greek for "deep-living deviation") is a Monotypic taxon, monotypic genus of unusual, highly distinctive nudibranch (sea slug) native to deep waters of the Pacific Ocean, North Pacific Ocean. It contains a single species, ''B. caudactylus'' ("finger tail"), and is the only known member of the monotypic family Bathydeviidae. Taxonomy ''Bathydevius'' is a bizarre nudibranch with a highly unusual appearance, ecology, and taxonomy. It is the first known nudibranch to inhabit the bathypelagic zone, and only one of very few pelagic, free-swimming genera within this generally Benthos, benthic group. It has a large, bell-shaped oral hood that it can use to catch prey, superficially similar to that of a Venus flytrap and closely resembling that of the nudibranch ''Melibe''. However, phylogenetic studies indicate that ''Bathydevius'' is not closely related to ''Melibe'', and is rather either (based on Ribosomal RNA, rRNA) the most Basal (phylogenetics), basal nudibranch ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathydevius
''Bathydevius'' (Greek for "deep-living deviation") is a monotypic genus of unusual, highly distinctive nudibranch (sea slug) native to deep waters of the North Pacific Ocean. It contains a single species, ''B. caudactylus'' ("finger tail"), and is the only known member of the monotypic family Bathydeviidae. Taxonomy ''Bathydevius'' is a bizarre nudibranch with a highly unusual appearance, ecology, and taxonomy. It is the first known nudibranch to inhabit the bathypelagic zone, and only one of very few pelagic, free-swimming genera within this generally benthic group. It has a large, bell-shaped oral hood that it can use to catch prey, superficially similar to that of a Venus flytrap and closely resembling that of the nudibranch '' Melibe''. However, phylogenetic studies indicate that ''Bathydevius'' is not closely related to ''Melibe'', and is rather either (based on rRNA) the most basal nudibranch genus or (based on mtDNA) the sister genus to the Bathydorididae. Distribut ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Slug
Sea slug is a common name for some Marine biology, marine invertebrates with varying levels of resemblance to terrestrial Slug, slugs. Most creatures known as sea slugs are gastropods, i.e. they are Sea snail, sea snails (marine gastropod mollusks) that, over evolutionary time, have either entirely lost their shells or have seemingly lost their shells due to having a significantly reduced or internal shell. The name "sea slug" is often applied to Nudibranch, nudibranchs and a paraphyletic set of other marine gastropods without apparent Gastropod shell, shells. Sea slugs have an enormous variation in body shape, color, and size. Most are partially translucent. The often bright colors of Coral reef, reef-dwelling species imply that these animals are under constant threat of predators. Still, the color can warn other animals of the sea slug's toxic stinging cells (nematocysts) or offensive taste. Like all Gastropod, gastropods, they have small, razor-sharp teeth called Radula, rad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusca
Mollusca is a phylum of protostome, protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant taxon, extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The number of additional fossil species is estimated between 60,000 and 100,000, and the proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine biology, marine phylum, comprising about 23% of all the named marine organisms. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat, as numerous groups are freshwater mollusc, freshwater and even terrestrial molluscs, terrestrial species. The phylum is typically divided into 7 or 8 taxonomy (biology), taxonomic class (biology), classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurobiology, neurologi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropod
Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, freshwater, and from the land. There are many thousands of species of sea snails and sea slug, slugs, as well as freshwater snails, freshwater limpets, land snails and slugs. The class Gastropoda is a diverse and highly successful class of mollusks within the phylum Mollusca. It 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 Furongian, Late Cambrian. , 721 family (taxonomy), families of gastropods are known, of which 245 are extinct and appear only in the fossil record, while 476 are currently neontology, extant living fossil, with or without a fossil record. Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chromodoris Lochi
''Chromodoris lochi'', common name Loch's chromodoris, or Loch’s chromodoris slug, is a species of colourful sea slug, a dorid nudibranch, a marine (ocean), marine gastropod mollusk in the family Chromodorididae. Distribution This species is found in the tropical waters of the central Indo-Pacific region and is known to range from Malaysia, Indonesia, Philippines to Fiji and the northern coast of Australia.Rudman, 1982''Chromodoris lochi''Sea Slug Forum, accessed 14 October 2013. Description ''Chromodoris lochi'' is blue or blueish-white with a white margin and typically dark or black lines running down the mantle and the foot. On the mantle, a continuous line runs around the border passing on the outside of the rhinophore and a second median one can be discontinuous. Individuals can reach at least 4 cm in length. There is some variation between individuals in this species, and the gills (retractile) and rhinophores (contractile) range in colour from a translucent straw- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusc
Mollusca is a phylum of protostome, protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant taxon, extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The number of additional fossil species is estimated between 60,000 and 100,000, and the proportion of undescribed species is very high. Many taxa remain poorly studied. Molluscs are the largest marine biology, marine phylum, comprising about 23% of all the named marine organisms. They are highly diverse, not just in size and anatomical structure, but also in behaviour and habitat, as numerous groups are freshwater mollusc, freshwater and even terrestrial molluscs, terrestrial species. The phylum is typically divided into 7 or 8 taxonomy (biology), taxonomic class (biology), classes, of which two are entirely extinct. Cephalopod molluscs, such as squid, cuttlefish, and octopuses, are among the most neurobiology, neurologi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euctenidiacea
The Doridina, common name dorid nudibranchs, are a Taxonomy (biology), taxonomic suborder of sea snails or sea slug, slugs, marine (ocean), marine gastropod molluscs in the order (biology), order Nudibranchia. Bouchet & Rocroi (2005) rejected the name Anthobranchia on the grounds that it also included ''Onchidium'' at the time of original publication. Doridina is equivalent and used in the latest classification.Bouchet P., Rocroi J.P., Hausdorf B., Kaim A., Kano Y., Nützel A., Parkhaev P., Schrödl M. & Strong E.E. (2017). Revised classification, nomenclator and typification of gastropod and monoplacophoran families. Malacologia. 61(1-2): 1-526. A morphological Phylogenetics, phylogenetic study, published in 2000, by Wägele & Willan showed that the subclade Gnathodoridacea (= Bathydoridoidea) and the subclade Doridacea (= Phanerobranchia + Cryptobranchia + Porostomata) each form a monophyletic group. In a later study, published in 2002, A. Valdés concluded that the superfamili ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dexiarchia
The Dexiarchia are a suborder of sea slugs, shell-less marine gastropod molluscs in the order Nudibranchia. This classification is based on the study by Schrödl ''et al.,'' published in 2001, who recognized within this clade two clades Pseudoeuctenidiacea and Cladobranchia. Taxonomy Clade Pseudoeuctenidiacea ( = Doridoxida) *Superfamily Doridoxoidea **Family Doridoxidae Clade Cladobranchia ( = Cladohepatica) Contains the subclades Euarminida, Dendronotida and Aeolidida *Not assigned to a superfamily (Metarminoidea) **Family Charcotiidae **Family Dironidae **Family Embletoniidae **Family Goniaeolididae **Family Heroidae **Family Madrellidae **Family Pinufiidae **Family Proctonotidae Subclade Euarminida *Superfamily Arminoidea **Family Arminidae **Family Doridomorphidae Subclade Dendronotida *Superfamily Tritonioidea **Family Tritoniidae Tritoniidae is a taxonomic family of nudibranchs in the suborder Cladobranchia, shell-less marine gastropod mollu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisthobranchia
Opisthobranchs () is a now informal name for a large and diverse group of specialized complex gastropods which used to be united in the subclass Opisthobranchia. That taxon is no longer considered to represent a monophyletic grouping. Euopisthobranchia is a taxon containing a revised collection of opisthobranchs, and that taxon is considered monophyletic. Euopisthobranchia does not include some "traditional" opisthobranchs such as the Sacoglossa and the Acochlidiacea. The subclass Heterobranchia now contains all the species which used to be assigned to Opisthobranchia, plus all the species in the Pulmonata. The subclass Opisthobranchia included species in the order Cephalaspidea (bubble shells and headshield slugs), the sacoglossans, anaspidean sea hares, pelagic sea angels, sea butterflies, and many families of the Nudibranchia. ''Opisthobranch'' means "gills behind" (and to the right) of the heart. In contrast, ''Prosobranch'' means ''gills in front'' (of the hear ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aglajidae
Aglajidae is a family of often colorful, medium-sized, sea slugs, marine opisthobranch gastropod mollusks. These are not nudibranchs; instead they are headshield slugs, in the clade Cephalaspidea The order Cephalaspidea, also known as the headshield slugs and bubble snails, is a major taxon of sea slugs and bubble snails, marine (ocean), marine gastropod mollusks within the larger clade Euopisthobranchia. Bubble shells is another commo ....Bouchet, P. (2012). Aglajidae. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=22981 on 2012-06-16 Note on the authority and dates Family names such as this one, Aglajidae Pilsbry, 1895 (1847), that have two dates (the second one in parentheses) are those names which are ruled by Article 40(2) of the ICZN Code. "If ... a family-group name was replaced before 1961 because of the synonymy of the type genus, the replacement name is to be maintained if it is in prevailing usage. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Berghia Coerulescens
''Berghia coerulescens'' is a species of sea slug, a marine nudibranch in the family Aeolidiidae.Gofas, S. (2010) ''Berghia coerulescens'' (Laurillard, 1830).In: Bouchet, P.; Gofas, S.; Rosenberg, G. (2010) World Marine Mollusca database. Accessed through: World Register of Marine Species on 2011-03-10 It is the type speciesCarmona L., Pola M., Gosliner T.M. & Cervera J.L. (2014)The Atlantic-Mediterranean genus ''Berghia'' Trinchese, 1877 (Nudibranchia: Aeolidiidae): taxonomic review and phylogenetic analysis.Journal of Molluscan Studies. 80(5): 482-498. of the genus '' Berghia''. Distribution Originally described from the French Mediterranean coast, this species is also known from different localities along the central and western Mediterranean (including the Adriatic Sea). It also occurs in the Atlantic Ocean, from the Brittany coasts to the Canary Islands. The geographic distribution of this species has been controversial. Some specimens of '' Berghia marcusi'' and '' Berghia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
