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Gastropteridae
Gastropteridae, the bat-winged slugs, is a family of sea slugs, gastropod molluscs in the superfamily Philinoidea of the clade Cephalaspidea, the headshield slugs and bubble snails. The greatest diversity of these colourful small slugs is in the tropical and sub-tropical Indo-Pacific region. Description Gastropteridae is a fairly diverse family containing four genera and thirty-three described species. Adults have an internal reduced shell or no shell at all. The body is fairly short, usually under in length, but exceptionally up to . Compared to the closely related philinids and the aglajids, the mantle cavity is small, and the gills are located further forward, in an exposed position. In most species, the hind end of the headshield is narrowed, raised and curved forward, sometimes being further forward than the front edge of the head. A radula is present, but no jaws. These slugs are mostly brightly coloured and distinctively patterned. Gastropterids have parapodia (large ou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropteridae
Gastropteridae, the bat-winged slugs, is a family of sea slugs, gastropod molluscs in the superfamily Philinoidea of the clade Cephalaspidea, the headshield slugs and bubble snails. The greatest diversity of these colourful small slugs is in the tropical and sub-tropical Indo-Pacific region. Description Gastropteridae is a fairly diverse family containing four genera and thirty-three described species. Adults have an internal reduced shell or no shell at all. The body is fairly short, usually under in length, but exceptionally up to . Compared to the closely related philinids and the aglajids, the mantle cavity is small, and the gills are located further forward, in an exposed position. In most species, the hind end of the headshield is narrowed, raised and curved forward, sometimes being further forward than the front edge of the head. A radula is present, but no jaws. These slugs are mostly brightly coloured and distinctively patterned. Gastropterids have parapodia (large ou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cephalaspidea
The order Cephalaspidea, also known as the headshield slugs and bubble snails, is a major taxon of sea slugs and bubble snails, marine gastropod mollusks within the larger clade Euopisthobranchia.Jörger K. M., Stöger I., Kano Y., Fukuda H., Knebelsberger T. & Schrödl M. (2010). "On the origin of Acochlidia and other enigmatic euthyneuran gastropods, with implications for the systematics of Heterobranchia". ''BMC Evolutionary Biology'' 10: 323. . Bubble shells is another common name for these families of marine gastropods, some of which have thin bubble-like shells. This clade contains more than 600 species. Members of this worldwide clade used to be considered the most primitive of the opisthobranchs, but now they are considered as derived and specialized members of the Euthyneura Spengel, 1881. Headshield slugs are the most morphologically diverse group of all the opisthobranchs. Anatomy The vast majority possess a shell, although it may be reduced or internal. They have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siphopteron
''Siphopteron'' is a genus of sea slugs, marine gastropod molluscs in the family Gastropteridae. Species Species within the genus ''Siphopteron'' include: * '' Siphopteron alboaurantium'' (Gosliner, 1984) * '' Siphopteron brunneomarginatum'' (Carlson & Hoff, 1974) * '' Siphopteron citrinum'' (Carlson & Hoff, 1974) * '' Siphopteron flavobrunneum'' (Gosliner, 1984) * '' Siphopteron flavum'' (Tokioka & Baba, 1964) * '' Siphopteron fuscum'' (Baba & Tokioka, 1965) * '' Siphopteron ladrones'' (Carlson & Hoff, 1974) * '' Siphopteron leah'' Klussmann-Kolb & Klussmann, 2003 * '' Siphopteron michaeli'' (Gosliner & Williams, 1988) * '' Siphopteron nigromarginatum'' Gosliner, 1989 * '' Siphopteron pohnpei'' (Hoff & Carlson, 1983) * '' Siphopteron quadrispinosum'' Gosliner, 1989 * '' Siphopteron tigrinum'' Gosliner, 1989 * ''Siphopteron'' sp. 1Lange R., Werminghausen J. & Anthes N. (2013). "Cephalo-traumatic secretion transfer in a hermaphrodite sea slug". ''Proceedings of the Royal Society B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gastropteron
''Gastropteron'' is a genus of small colorful sea slugs, marine gastropod molluscs in the family Gastropteridae Gastropteridae, the bat-winged slugs, is a family of sea slugs, gastropod molluscs in the superfamily Philinoidea of the clade Cephalaspidea, the headshield slugs and bubble snails. The greatest diversity of these colourful small slugs is in the ....Bouchet, P.; Gofas, S. (2015). Gastropteron. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=181211 on 2015-06-30 Species Species within the genus ''Gastropteron'' include: * '' Gastropteron bicornutum'' Baba & Tokioka, 1965 * '' Gastropteron chacmol'' Gosliner, 1989 * '' Gastropteron hamanni'' Gosliner, 1989 * '' Gastropteron japonicum'' Tokioka & Baba, 1964 * '' Gastropteron odhneri'' Gosliner, 1989 * '' Gastropteron pacificum'' Bergh, 1894 * '' Gastropteron rubrum'' (Rafinesque, 1814) * '' Gastropteron sibogae'' Bergh, 1905 * '' Gastr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siphopteron Quadrispinosum
''Siphopteron quadrispinosum'' is a species of small sea slug, a marine opisthobranch gastropod mollusc in the order Cephalaspidea, the headshield slugs. This slug is a simultaneous hermaphrodite. Distribution This species was originally identified in Hawaii (Kihei, Maui) and Papua New Guinea, and has a wide distribution throughout the western and central Pacific Ocean. Description ''Siphopteron quadrispinosum'' is a relatively small species of sea slug, growing to a maximum length of 5 mm. The body is bright yellow, and the siphon is orange-red in colour. The parapodia and siphon differ between the Papua New Guinean and Haiwaiian populations. Papua New Guinean specimens have the colouration of the siphon continuing along the posterior shield. Also, the parapodia are entirely yellow. In Hawaiian populations, the parapodia have a white margin and the orange-red colouration along the posterior shield is absent. Eggs of this species are pale yellow and are laid in a flattened ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philinoidea
Philinoidea is a taxonomic superfamily of sea slugs, specifically headshield slugs, marine gastropod mollusks in the order Cephalaspidea. MolluscaBase eds. (2021). MolluscaBase. Philinoidea Gray, 1850 (1815). Accessed through: World Register of Marine Species at: http://marinespecies.org/aphia.php?p=taxdetails&id=196322 on 2021-10-14 Anatomy The species in the Superfamily Philinoidea are generally small animals, and have no shell or gills. Unlike some related forms, the visceral mass is not sharply set off from the rest of the body. Taxonomy According to the latest taxonomy, the following families are recognised in the Superfamily Philinoidea: * Aglajidae * Alacuppidae * Antarctophilinidae Moles, Avila & Malaquias, 2019 * Colpodaspididae * Gastropteridae * Laonidae * Philinidae * Philinoglossidae * Philinorbidae ** '' Philinorbis'' Habe, 1950 ** '' Pseudophiline'' Habe, 1976 * Scaphandridae Scaphandridae is a family of sea snails, marine gastropod mollusks in th ... [...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] |
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] |
World Register Of Marine Species
The World Register of Marine Species (WoRMS) is a taxonomic database that aims to provide an authoritative and comprehensive 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 the ''World List of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gonopore
A gonopore, sometimes called a gonadopore, is a genital pore in many invertebrates. Hexapods, including insects have a single common gonopore, except mayflies, which have a pair of gonopores. More specifically, in the unmodified female it is the opening of the common oviduct, and in the male, it is the opening of the ejaculatory duct. The position of the gonopore varies considerably between groups, but is generally constant within groups, allowing its position to be used as a "segmental marker". In Malacostraca, it is on the sixth thoracic segment; in Symphyla it is on the fourth trunk segment; in arachnids, it is on the second segment of the opisthosoma. In insects and centipedes, the gonopores are close to the animal's tail, while in millipedes they are on the third body segment behind the head, near the second pair of legs. See also * Gonopod * Gonopodium Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penis
A penis (plural ''penises'' or ''penes'' () is the primary sexual organ that male animals use to inseminate females (or hermaphrodites) during copulation. Such organs occur in many animals, both vertebrate and invertebrate, but males do not bear a penis in every animal species, and in those species in which the male does bear a so-called penis, the penises in the various species are not necessarily homologous. The term ''penis'' applies to many intromittent organs, but not to all. As an example, the intromittent organ of most cephalopoda is the hectocotylus, a specialized arm, and male spiders use their pedipalps. Even within the Vertebrata there are morphological variants with specific terminology, such as Hemipenis, hemipenes. In most species of animals in which there is an organ that might reasonably be described as a penis, it has no major function other than intromission, or at least conveying the sperm to the female, but in the Eutheria, placental mammals the peni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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