|
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. Dist ... [...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. Dist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Opisthobranchia
Opisthobranchs () is now an 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 heart). Opisth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Euctenidiacea
The Euctenidiacea, common name dorid nudibranchs, are a taxonomic suborder of sea snails or slugs, marine gastropod molluscs in the 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 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 superfamilies Doridoidea and Phyllidioidea (called by him Cryptobranchia + ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chromodoris Lochi
''Chromodoris lochi'', common name Loch's chromodoris, is a species of colourful sea slug, a dorid nudibranch, a 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-color, through to pink and light orange. T ... [...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 st ... [...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 ... [...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—sens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mollusca
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 g ... [...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 **Family Aranucidae **Family Bornellidae **Family Dendronotidae **Family Dotidae **Family Hancockiidae **Family Lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylliroe Bucephalum
''Phylliroe bucephala'' is a parasitic species of pelagic nudibranch, a marine gastropod mollusc in the family Phylliroidae. Biology This species of nudibranch is transparent with its guts visible through the laterally flattened body. It has a tail and two long smooth rhinophores. It feeds on jellyfish and plankton as an adult. The juveniles parasitize ''Zanclea'' medusae Jellyfish and sea jellies are the informal common names given to the medusa-phase of certain gelatinous members of the subphylum Medusozoa, a major part of the phylum Cnidaria. Jellyfish are mainly free-swimming marine animals with umbrella ....Gosliner TM, Valdes A Behrens DW 2015 ''Nudibranch and Sea Slug Identification Indo-Pacific'' New World Publications Jacksonville Florida USA References * Powell A. W. B., ''New Zealand Mollusca'', William Collins Publishers Ltd, Auckland, New Zealand 1979 SeaSlugForum {{Taxonbar, from=Q3200126 Phylliroidae Gastropods described in 1810 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Janolus Sp Taken In Anilao Philippines
''Janolus'' is a genus of small to large sea slugs, or more accurately nudibranchs, marine gastropod mollusks, in the family Janolidae. The name ''Janolus'' is derived from the two-headed god Janus, in ancient Roman mythology. Description Adult individuals of ''Janolus'' species can be between 2.5 cm to 8 cm long, depending on the species. They are semi-translucent and the body is covered in short cerata. Distribution ''Janolus'' species are found in many areas world-wide, including Europe, Australia, Japan and Africa. Ecology Habitat This genus of nudibranch is found in shallow and subtidal waters. Feeding habits ''Janolus'' species feed on Bryozoa, moss animals. Predators In California, '' Navanax'' is a known predator of ''Janolus''. ''Navanax'' tracks the slime of ''Janolus'' by using chemoreceptors. When ''Janolus'' is about to be caught, it rolls into a ball, leaving its cerata exposed. Species Species in the genus ''Janolus'' include:MolluscaBas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephalopyge Trematoides
''Cephalopyge trematoides'' is a pelagic species of nudibranch. A free-swimming marine gastropod in the family Phylliroidae. ''Cephalopyge trematoides'' is the only known species in its genus (i.e. the genus is monotypic). Etymology Cephalopyge is a contraction of cephalus (Greek: κεφαλή , "head") and (πūγή, "behind") referring to the position of the anus close to the head. The species epithet trematoides expresses a likeness to flukes. Description ''C. trematoides'' grows to 2.5 cm in length. It swims at approximately 12 cm/s, by passing several undulatory waves down its body each second. It is flattened and transparent; its internal organs are visible.Marine species identification portalCephalopygeanCephalopyge trematoides Pelagic nudibranchs Of the approximately 3000 species of nudibranch, the vast majority are benthic, only a couple are neustonic, and ''C. trematoides'' is very unusual in that it is pelagic. It is estimated to be one of only f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
