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Deroceras Praecox
''Deroceras praecox'' is a species of small air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Agriolimacidae. Taxonomy When Wiktor (1966) described ''D. praecox'' he distinguished two forms on the basis of their genitalia. Later Wiktor (1973) realised that one of the forms of ''D. praecox'' that he had distinguished was synonymous with '' Deroceras rodnae'', described slightly earlier by Grossu & Lupu (1965). But the other form with a spiral end to its penis occupied a distinct range in the Sudeten mountains and neighboring areas; this is what is called ''D. praecox'' nowadays. It remains debatable whether ''D. praecox'' might be better viewed as a subspecies of ''D. rodnae'' ( Hutchinson & Reise, 2009). Note that the distinct differences in mating behaviour between ''D. praecox'' and ''D. rodnae'' that Reise (1995) reported turn out to refer to differences between ''D. praecox'' and a more distant species, '' Deroceras juranum'' ( Hutchinson & ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deroceras Juranum
''Deroceras juranum'' is a species of air-breathing land slug, a terrestrial pulmonate gastropod mollusk in the family Agriolimacidae. Taxonomy Wüthrich (1993) described ''Deroceras juranum'' from the Jura Mountains in Switzerland, distinguishing it from the co-occurring ''Deroceras rodnae'' on the basis of ''Deroceras juranums distinct violet coloration. Later the same coloration was found in Austrian populations by Jordaens et al. (1998) and in other species of ''Deroceras'' by Reise & Hutchinson (2001). Reise (1997) demonstrated that the violet coloration was controlled by a single Mendelian-inherited gene and thus considered ''Deroceras juranum'' to be a variety of ''Deroceras rodnae''. It is treated thus in Wiktor’s (2000) monograph of the Agriolimacidae. Hutchinson & Reise (2009) later realised that what had been considered ''Deroceras rodnae'' was actually two species with radically different mating behaviours and consistent, although subtle, differences in morphol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Molluscs Recorded In Slovakia
Slovakia is a land-locked country, and therefore the molluscs of Slovakia are all land and freshwater species. There are 247 Horsák M., Juřičková L., Beran L., Čejka T. & Dvořák L. (2010). "Komentovaný seznam měkkýšů zjištěných ve volné přírodě České a Slovenské republiky. nnotated list of mollusc species recorded outdoors in the Czech and Slovak Republics. ''Malacologica Bohemoslovaca'', Suppl. 1: 1-37PDF species of molluscs living in the wild in Slovakia. In addition there are 9 gastropod species living only in greenhouses. There are a total of 219 species of gastropods, which breaks down to 51 species of freshwater gastropods, and 168 species of land gastropods, plus 28 species of bivalves living in the wild. There are 8 non-indigenous gastropod species (3 freshwater and 5 land species) and 3 species of bivalves in the wild in Slovakia. This is a total of 6 freshwater non-indigenous species of wild molluscs. ;Summary table of number of species There a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Molluscs Recorded In Poland
There are approximately 265 species of non-marine molluscs living in the wild in Poland. Systematic list The list is in zoological order rather than alphabetical order. The Polish common name (where one exists) of each mollusc is given first, in parentheses, and then the scientific name. The source for the non-marine species on this list isCLECOM-PROJECT: Checklist of species-group taxa of continental Mollusca living in the Netherlands (CLECOM Section I) 14-07-2002with changes. Gastropoda Neritidae * (rozdepka rzeczna) ''Theodoxus fluviatilis fluviatilis'' (Linnaeus, 1758) ** '' Theodoxus fluviatilis littoralis'' (Linnaeus, 1758) Aciculidae * (igliczek karpacki) ''Acicula parcelineata'' (Clessin, 1911) * (igliczek lśniący) ''Platyla polita'' (Hartmann, 1840) Viviparidae * (żyworódka pospolita) ''Viviparus viviparus'' (Linnaeus, 1758) * (żyworódka rzeczna) ''Viviparus contectus'' (Millet, 1813) Bithyniidae * (zagrzebka pospolita) ''Bithynia tentaculata'' (Linnaeus, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Molluscs Recorded In The Czech Republic
This is a list of the non-marine molluscs of the Czech Republic. That country is land-locked and therefore it has no marine molluscs, only land and freshwater species, including snails, slugs, freshwater clams and freshwater mussels. There are 247 species of molluscs living in the wild in the Czech Republic. In addition there are at least 11 gastropod species surviving in greenhouses. There are 219 gastropod species (50 freshwater and 169 land species) and 28 bivalve species living in the wild. There are also 11 introduced gastropod species (5 freshwater and 7 land species) and 4 bivalve species living in the wild in the Czech Republic. This is a total of 9 freshwater non-indigenous species living in natural habitats. ;Summary table of number of species There are 2 endemic species of molluscs in the Czech Republic: *''Alzoniella slovenica'' in Moravia (and in Slovakia too) *'' Bulgarica nitidosa'' in Bohemia. History Historical lists from 19th century or overviews of Czech ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IUCN Red List
The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of precise criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world. With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red Lists are produced by countries or organizations, which assess the risk of extinction to species within a political management unit. The aim of the IUCN Red List is to convey the urgency of conservation issues to the public and policy makers, as well as help the international community to reduce species extinction. According to IUCN the formally stated goals of the Red List are to provi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eastern Europe
Eastern Europe is a subregion of the Europe, European continent. As a largely ambiguous term, it has a wide range of geopolitical, geographical, ethnic, cultural, and socio-economic connotations. The vast majority of the region is covered by Russia, which spans roughly 40% of the continent's landmass while accounting for approximately 15% of its total population."The Balkans" , ''Global Perspectives: A Remote Sensing and World Issues Site''. Wheeling Jesuit University/Center for Educational Technologies, 1999–2002. It represents a significant part of Culture of Europe, European culture; the main socio-cultural characteristics of Eastern Europe have historically been defined by the traditions of Slavs and Greeks, as well as by the influence of Eastern Christianity as it developed through t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wiktor2000
Wiktor may refer to: * Andrzej Wiktor (1931–2018), Polish malacologist * Wiktor Andersson (1887–1966), Swedish film actor * Wiktor Balcarek (1915–1998), Polish chess player * Wiktor Biegański (1892–1974), Polish actor, film director and screenwriter * Wiktor Brillant (1877–1942), Polish pharmacist *Wiktor Chabel (born 1985), Polish rower * Wiktor Eckhaus (1930–2000), Polish–Dutch mathematician * Wiktor Jassem (1922–2016), Polish phonetician, philologist, linguist *Wiktor Gilewicz (1907–1948), Polish officer * Wiktor Grotowicz (1919–1985), Polish actor *Wiktor Komorowski (1887–1952), Polish pilot *Wiktor Litwiński Wiktor Litwiński was the President of Warsaw The city mayor of Warsaw, or more literally the ''city president of Warsaw'' (the official title in Polish is ''"prezydent miasta stołecznego Warszawy"'', literal translation ''"president of the ca ..., Polish politician * Wiktor Olecki (1909–1981), Polish cyclist * Wiktor Ormicki (1898–1941), Po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deroceras Praecox 2
''Deroceras'' is a taxonomic genus of small to medium sized air-breathing land slugs in the family Agriolimacidae. Description Most species reach only 30–35 mm in length (max 45 mm). Coloration varies considerably within and between species but common patterns are pale cream, with or without darker flecks (never stripes), and a more uniform light gray or brown to black-brown. Mucus is usually colourless but in some species includes a white deposit when the slug has been disturbed. No keel continues from the tail along the back. The mantle is large (up to half the body length), containing a shell plate internally. The pneumostome lies in the posterior half of the mantle. Generally external appearance does not reliably distinguish one species from certain others, so species identification requires dissection to reveal the genitalia, unless the local species diversity is known to be low. The taxonomy, anatomy and other aspects of the biology of this genus wer ... [...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] |
