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Pulmonate
Pulmonata or pulmonates is an informal group (previously an order, and before that, a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includes many land and freshwater families, and several marine families. The taxon Pulmonata as traditionally defined was found to be polyphyletic in a molecular study per Jörger ''et al.'', dating from 2010. Pulmonata are known from the Carboniferous period to the present. Pulmonates have a single atrium and kidney, and a concentrated symmetrical nervous system. The mantle cavity is on the right side of the body, and lacks gills, instead being converted into a vascularised lung. Most species have a shell, but no operculum, although the group does also include several shell-less slugs. Pulmonates are hermaphroditic, and some groups possess love darts. Linnean taxonomy The taxonomy of this group according to the taxonomy of the Gastrop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siphonarioidea
Siphonarioidea is a taxonomic superfamily of air-breathing sea snails or false limpets, marine gastropod mollusks in the clade Panpulmonata. Distribution The Siphonarioidea are broadly distributed across the globe, however they are known to be the most abundant and species diverse in the warmer temperate to subtropical regions. More specifically, they are found within the southern hemisphere of the Indo-Pacific region. They generally inhabit marine benthic regions, specifically the subtidal zones. Description Siphonarioidea are almost entirely marine organisms, as they have been found to have evolved into despite the terrestrial ecosystems inhabited by their ancestors. They inhabit the subtidal zones of marine ecosystems, and resemble true limpets with their non coiled, conical shells. Siphonarioidea are frequently referred to as "false limpets" due to some distinct differences despite their resemblance to these Patellogastropoda. For example, Siphonariid adults' dorso-ven ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snails
A snail is a shelled gastropod. The name is most often applied to land snails, terrestrial molluscs, terrestrial pulmonate gastropod molluscs. However, the common name ''snail'' is also used for most of the members of the molluscan class Gastropoda that have a coiled gastropod shell, shell that is large enough for the animal to retract completely into. When the word "snail" is used in this most general sense, it includes not just land snails but also numerous species of sea snails and freshwater snails. Gastropods that naturally lack a shell, or have only an internal shell, are mostly called ''slugs'', and land snails that have only a very small shell (that they cannot retract into) are often called ''semi-slugs''. Snails have considerable human relevance, including Snails as food, as food items, as pests, and as vectors of disease, and their shells are used as decorative objects and are incorporated into jewellery. The snail has also had some cultural significance, tending t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermaphrodite
A hermaphrodite () is a sexually reproducing organism that produces both male and female gametes. Animal species in which individuals are either male or female are gonochoric, which is the opposite of hermaphroditic. The individuals of many taxonomic groups of animals, primarily invertebrates, are hermaphrodites, capable of producing viable gametes of both sexes. In the great majority of tunicates, mollusks, and earthworms, hermaphroditism is a normal condition, enabling a form of sexual reproduction in which either partner can act as the female or male. Hermaphroditism is also found in some fish species, but is rare in other vertebrate groups. Most hermaphroditic species exhibit some degree of self-fertilization. The distribution of self-fertilization rates among animals is similar to that of plants, suggesting that similar pressures are operating to direct the evolution of selfing in animals and plants. A rough estimate of the number of hermaphroditic animal species ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Systellommatophora
The Systellommatophora (synonym Gymnomorpha) is a clade of primitive, air-breathing slugs, according to the taxonomy of the Gastropoda (Bouchet & Rocroi, 2005). They are marine and terrestrial pulmonate gastropods within the Heterobranchia. There are two superfamilies in this clade. Slugs in the superfamily Onchidioidea are primarily marine (except for five land-dwelling or freshwater species), whereas slugs in the superfamily Veronicelloidea are primarily terrestrial. Anatomy No species in this clade have shells as adults. These slugs are distinguished by the location of the anus at the rear of the body. Although neither superfamily bears shells as adults, the Onchidioidea do possess a vestigial, non-mineralized shell sac and possess a larval shell. It is not known whether or not the veronicellids bear a larval shell. Taxonomy According to the previous taxonomy of the Gastropoda (Ponder & Lindberg, 1997) Systellommatophora was considered to be a suborder or an order. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Planorboidea
Lymnaeoidea is a taxonomic superfamily of air-breathing freshwater snails that belong to the superorder Hygrophila.MolluscaBase eds. (2020). MolluscaBase. Lymnaeoidea Rafinesque, 1815. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=489336 on 2020-06-27 Families * Acroloxidae Thiele, 1931 * Bulinidae P. Fischer & Crosse, 1880 * Burnupiidae Albrecht, 2017 * Clivunellidae Kochansky-Devidé & Slišković, 1972 † * Lymnaeidae Rafinesque, 1815 * Physidae Fitzinger, 1833 * Planorbidae Planorbidae, common name the ramshorn snails or ram's horn snails, is a family (biology), family of air-breathing freshwater snails, Aquatic animal, aquatic pulmonate gastropod Mollusca, molluscs. Unlike most molluscs, the blood of ram's horn sn ... Rafinesque, 1815 ;Families brought into synonymy: * Ancylidae Rafinesque, 1815: synonym of Ancylinae Rafinesque, 1815 * Limnophysidae W. Dybowski, 1903: synonym of Lymnaeidae Rafinesque, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacidorboidea
The Glacidorbidae is a Taxonomy (biology), taxonomic family (biology), family of freshwater snails. Taxonomy 2005 taxonomy Glacidorbidae is the only family in the superfamily Glacidorboidea. Glacidorboidea has been classified within the informal group Lower Heterobranchia in the Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005), taxonomy of Bouchet & Rocroi (2005). 2010 taxonomy Jörger et al. (2010) Heterobranchia#2010 taxonomy, redefined the major groups within the Heterobranchia; they moved Glacidorboidea to Panpulmonata.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. . Genera Genera within the family Glacidorbidae include:Ponder, W. F., Avern, G. J. (2000). The Glacidorbidae (Mollusca: Gastropoda: Heterobranchia) of Australia. ''Records of the Australian Museum'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chilinoidea
Chilinoidea is a superfamily of air-breathing freshwater snails, pulmonate gastropod mollusk Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...s in the superorder Hygrophila. References Panpulmonata {{Pulmonata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Edward Gray
John Edward Gray (12 February 1800 – 7 March 1875) was a British zoologist. He was the elder brother of zoologist George Robert Gray and son of the pharmacologist and botanist Samuel Frederick Gray (1766–1828). The same is used for a zoological name. Gray was keeper of zoology at the British Museum in London from 1840 until Christmas 1874, before the natural history holdings were split off to the Natural History Museum. He published several catalogues of the museum collections that included comprehensive discussions of animal groups and descriptions of new species. He improved the zoological collections to make them amongst the best in the world. Biography Gray was born in Walsall, but his family soon moved to London, where Gray studied medicine. He assisted his father in writing ''The Natural Arrangement of British Plants'' (1821). After being blackballed by the Linnean Society of London, Gray shifted his interest from botany to zoology. He began his zoological ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphiboloidea
Amphiboloidea is a taxonomic superfamily of air-breathing land snails. Distribution Amphibolids are found in Indo-Pacific intertidal mangrove, saltmarsh and estuarine mudflat habitats. Taxonomy 2005 taxonomy According to the taxonomy of the Gastropoda (Bouchet & Rocroi, 2005), it is a superfamily in the informal group Basommatophora, within the Pulmonata. This superfamily has contained only one family, the Amphibolidae. 2007 taxonomy Golding et al. (2007)Golding R. E., Ponder W. F. & Byrne M. (2007). "Taxonomy and anatomy of Amphiboloidea (Gastropoda: Heterobranchia: Archaeopulmonata)". ''Zootaxa'' 1476: 1-50abstract have established new families: * Maningrididae Golding, Ponder & Byrne, 2007 - with the only species '' Maningrida arnhemensis'' * Phallomedusidae Golding, Ponder & Byrne, 2007 2010 taxonomy Basommatophora ( Siphonarioidea and Amphiboloidea and Hygrophila) have been found polyphyletic and so Jörger et al. (2010)Jörger K. M., Stöger I., Kano Y ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johannes Thiele (zoologist)
Karl Hermann Johannes Thiele (1 October 1860 – 5 August 1935) was a German zoologist specialized in malacology. Thiele was born in Goldap, East Prussia. His ''Handbuch der systematischen Weichtierkunde'' (English language, English edition published by the Smithsonian under the title ''Handbook of Systematic Malacology'') is a standard work. From 1904 until his retirement in 1925 he was the curator of the malacological collection at the Museum für Naturkunde, Museum für Naturkunde (Museum of Natural History) in Berlin. Thiele described more than 1.500 new species of molluscs; until today their types are deposited with the Museum of Natural History in Berlin. Especially important are his works on the Mollusca of the First German Antarctica Expedition and of the Valdivia Expedition, German Deep Sea Expedition aboard the vessel Valdivia. Thiele's classification of Gastropoda has been in use up to the past decade. It modified an earlier concept of Henri Milne-Edwards (1848) with thr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
