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Podarcis Sicula Rb
''Podarcis'' is a genus of lizards, known colloquially as wall lizards, in the family Lacertidae. Its members look very similar to lizards of the genus ''Lacerta'', to which they were considered to belong until the 1970s. While similar externally and ecologically, ''Podarcis'' form a distinct group differing from ''Lacerta'' by the construction of the skull and the hemipenis, and by the processes of the caudal vertebrae. Wall lizards are native to Europe and northern Africa, and most species are restricted to the Mediterranean region. Wall lizards diversified and hybridized during the Messinian salinity crisis. The Italian wall lizard and the common wall lizard have been introduced to North America, where they have become intermediate hosts for some Acuariidae larvae. Species and subspecies The genus ''Podarcis'' contains the following 27 species which are recognized as being valid. A few of the many recognized subspecies are also listed here. *Bocage's wall lizard, ''Podarcis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pleistocene
The Pleistocene ( ; referred to colloquially as the ''ice age, Ice Age'') is the geological epoch (geology), epoch that lasted from to 11,700 years ago, spanning the Earth's most recent period of repeated glaciations. Before a change was finally confirmed in 2009 by the International Union of Geological Sciences, the cutoff of the Pleistocene and the preceding Pliocene was regarded as being 1.806 million years Before Present (BP). Publications from earlier years may use either definition of the period. The end of the Pleistocene corresponds with the end of the last glacial period and also with the end of the Paleolithic age used in archaeology. The name is a combination of Ancient Greek () 'most' and (; Latinized as ) 'new'. The aridification and cooling trends of the preceding Neogene were continued in the Pleistocene. The climate was strongly variable depending on the glacial cycle, oscillating between cold Glacial period, glacial periods and warmer Interglacial, int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genetic Divergence
Genetic divergence is the process in which two or more populations of an ancestral species accumulate independent genetic changes ( mutations) through time, often leading to reproductive isolation and continued mutation even after the populations have become reproductively isolated for some period of time, as there is not any genetic exchange anymore. In some cases, subpopulations cover living in ecologically distinct peripheral environments can exhibit genetic divergence from the remainder of a population, especially where the range of a population is very large (see parapatric speciation). The genetic differences among divergent populations can involve silent mutations (that have no effect on the phenotype) or give rise to significant morphological and/or physiological changes. Genetic divergence will always accompany reproductive isolation, either due to novel adaptations via selection and/or due to genetic drift, and is the principal mechanism underlying speciation. On a m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Podarcis Carbonelli
''Podarcis carbonelli'', commonly known as Carbonell's wall lizard, is a species of lizard in the family Lacertidae. The species is native to Portugal and Spain. This lizard reaches a total length (including tail) of 20 cm (8 in), and feeds primarily on small invertebrates such as insects, arachnids, and snails. Its natural habitats are temperate shrublands and sandy shores. Habitat loss threatens its survival. Etymology The specific name, ''carbonelli'', is in honor of "J. Carbonell" who is the wife of Pérez-Mellado. Description Carbonell's wall lizard grows to a snout-to-vent length of with a tail about twice as long. Females tend to be slightly larger than males in some localities. The dorsal surface is usually grey or brown, but is sometimes green (especially so in males), copiously speckled with rows of dark markings. The flanks may also be somewhat greenish with reticulated, dark markings. The underparts are whitish and there are often small blue spots along ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Podarcis Bocagei
Bocage's wall lizard (''Podarcis bocagei'') is a species of lizard in the family Lacertidae. The species is endemic to the Iberian Peninsula. Its natural habitats are temperate forests, temperate shrubland, Mediterranean-type shrubby vegetation, sandy shores, rural gardens, and urban areas. The IUCN does not consider it to be threatened. Etymology Both the specific name, ''bocagei'', and the common name, Bocage's wall lizard, are in honor of Portuguese zoologist José Vicente Barbosa du Bocage. Beolens B, Watkins M, Grayson M (2011). ''The Eponym Dictionary of Reptiles''. Baltimore: Johns Hopkins University Press. xiii + 296 pp. . (''Podarcis bocagei'', p. 28). Description Bocage's wall lizard grows to a snout-to-vent length (SVL) of about , with a tail twice SVL. Males are larger than females. It is a sturdy lizard, somewhat flattened, and resembling Carbonell's wall lizard (''Podarcis carbonelli''). The dorsal surface is usually grey or yellowish-brown, but is sometimes gree ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subspecies
In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), morphology), but that can successfully interbreed. Not all species have subspecies, but for those that do there must be at least two. Subspecies is abbreviated as subsp. or ssp. and the singular and plural forms are the same ("the subspecies is" or "the subspecies are"). In zoology, under the International Code of Zoological Nomenclature, the subspecies is the only taxonomic rank below that of species that can receive a name. In botany and mycology, under the International Code of Nomenclature for algae, fungi, and plants, other infraspecific name, infraspecific ranks, such as variety (botany), variety, may be named. In bacteriology and virology, under standard International Code of Nomenclature of Prokaryotes, bacterial nomenclature and virus clas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acuariidae
Acuariidae is a family of spirurian ses ITIS - systematics is OK but list of ta ...n nematodes. Like all nematodes, they have neither a circulatory nor a respiratory system. They are the only family in Taxonomic rank">superfamily Acuarioidea, and number about 40 genera">respiratory system">circulatory system">circulatory nor a respiratory system. They are the only family in Taxonomic rank">superfamily Acuarioidea, and number about 40 genera and 300 species, most of which are parasites of birds.Hallan (2007) Genera Several genera, particularly in the Seuratiinae, are monotypic. At least some of them are liable to be invalid. Subfamily Acuariinae Railliet, Henry & Sisoff, 1912 * '' Acuaria'' Bremser, 1811 * '' Cheilospirura'' Diesing, 1861 * '' Chevreuxia'' Seurat, 1918 * '' Chordatortilis'' Mendonça & Rodrigues, 1965 * '' Chordocephalus'' Alegret, 1941 * '' Cosmocephalus'' Molin, 1858 * '' Decorataria'' Sobolev, 1949 (sometimes included in ''Syncuaria'') * '' Desportesius'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North America
North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the south and west by the Pacific Ocean. The region includes Middle America (Americas), Middle America (comprising the Caribbean, Central America, and Mexico) and Northern America. North America covers an area of about , representing approximately 16.5% of Earth's land area and 4.8% of its total surface area. It is the third-largest continent by size after Asia and Africa, and the list of continents and continental subregions by population, fourth-largest continent by population after Asia, Africa, and Europe. , North America's population was estimated as over 592 million people in list of sovereign states and dependent territories in North America, 23 independent states, or about 7.5% of the world's popula ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Introduced Species
An introduced species, alien species, exotic species, adventive species, immigrant species, foreign species, non-indigenous species, or non-native species is a species living outside its native distributional range, but which has arrived there by human activity, directly or indirectly, and either deliberately or accidentally. Non-native species can have various effects on the local ecosystem. Introduced species that become established and spread beyond the place of introduction are considered naturalized. The process of human-caused introduction is distinguished from biological colonization, in which species spread to new areas through "natural" (non-human) means such as storms and rafting. The Latin expression neobiota captures the characteristic that these species are ''new'' biota to their environment in terms of established biological network (e.g. food web) relationships. Neobiota can further be divided into neozoa (also: neozoons, sing. neozoon, i.e. animals) and ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
