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Western Fence Lizard
The western fence lizard (''Sceloporus occidentalis'') is a common lizard of Arizona, New Mexico, California, Idaho, Nevada, Oregon, Utah, Washington, Northern Mexico, and the surrounding area. As the ventral abdomen of an adult is characteristically blue, it is also known as the blue-belly. Two western fence lizards have been reported with duplicated or forked tails, presumably following an autotomy. Taxonomy Taxonomy for the western fence lizard has been under much debate. ''S. occidentalis'' belongs in the order Squamata (snakes and lizards) and the suborder Iguania. The family in which it belongs is still under scrutiny. The family Phrynosomatidae, along with seven other families, used to be included in the single family Iguanidae, until Frost and Etheridge's (1989) analysis of iguanian systematics suggested the family be divided. Most literature, however, still place the phrynosomatids in Iguanidae. Five subspecies are recognized, as follows: *San Joaquin fence lizard, ''Sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sacramento County, California
Sacramento County () is a county located in the U.S. state of California. As of the 2020 census, the population was 1,585,055. Its county seat is Sacramento, which has been the state capital of California since 1854. Sacramento County is the central county of the Greater Sacramento metropolitan area. The county covers about in the northern portion of the Central Valley, on into Gold Country. Sacramento County extends from the low delta lands between the Sacramento River and San Joaquin River, including Suisun Bay, north to about ten miles (16 km) beyond the State Capitol and east into the foothills of the Sierra Nevada Mountains. The southernmost portion of Sacramento County has direct access to San Francisco Bay. Since 2010, statewide droughts in California have further strained Sacramento County's water security. History Sacramento County was one of the original counties of California, which were created in 1850 at the time of statehood. The county was named after ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phrynosomatidae
The Phrynosomatidae are a diverse family of lizards, sometimes classified as a subfamily (Phrynosomatinae), found from Panama to the extreme south of Canada. Many members of the group are adapted to life in hot, sandy deserts, although the spiny lizards prefer rocky deserts or even relatively moist forest edges, and the short-horned lizard lives in prairie or sagebrush environments. The group includes both egg-laying and viviparous species, with the latter being more common in species living at high elevations. The earliest fossil remains of this group are known from the Late Cretaceous of Mongolia and belong to the genus ''Desertiguana''. As phrynosomatids are presently known only from North America, these remains indicate that phrynosomatids likely had a wider distribution in prehistoric times. Genera The Phrynosomatidae are organised into 9 genera in this family. The earless taxa (''Cophosaurus'' and ''Holbrookia'') are sister genera. Family Phrynosomatidae * ''Callisaurus' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Male Sceloporus Occidentalis Occidentalis
Male (symbol: ♂) is the sex of an organism that produces the gamete (sex cell) known as sperm, which fuses with the larger female gamete, or ovum, in the process of fertilization. A male organism cannot reproduce sexually without access to at least one ovum from a female, but some organisms can reproduce both sexually and asexually. Most male mammals, including male humans, have a Y chromosome, which codes for the production of larger amounts of testosterone to develop male reproductive organs. Not all species share a common sex-determination system. In most animals, including humans, sex is determined genetically; however, species such as ''Cymothoa exigua'' change sex depending on the number of females present in the vicinity. In humans, the word ''male'' can also be used to refer to gender in the social sense of gender role or gender identity. Overview The existence of separate sexes has evolved independently at different times and in different lineages, an example of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subspecies
In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (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 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 ranks, such as variety, may be named. In bacteriology and virology, under standard bacterial nomenclature and virus nomenclature, there are recommendations but not strict requirements for recognizing other important infraspecific ranks. A taxonomist decides whether ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clade
A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, the equivalent Latin term ''cladus'' (plural ''cladi'') is often used in taxonomical literature. The common ancestor may be an individual, a population, or a species (extinct or extant). Clades are nested, one in another, as each branch in turn splits into smaller branches. These splits reflect evolutionary history as populations diverged and evolved independently. Clades are termed monophyletic (Greek: "one clan") groups. Over the last few decades, the cladistic approach has revolutionized biological classification and revealed surprising evolutionary relationships among organisms. Increasingly, taxonomists try to avoid naming taxa that are not clades; that is, taxa that are not monophyletic. Some of the relationships between organisms ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Molecular Systematics
Molecular phylogenetics () is the branch of phylogeny that analyzes genetic, hereditary molecular differences, predominantly in DNA sequences, to gain information on an organism's evolutionary relationships. From these analyses, it is possible to determine the processes by which diversity among species has been achieved. The result of a molecular phylogenetic analysis is expressed in a phylogenetic tree. Molecular phylogenetics is one aspect of molecular systematics, a broader term that also includes the use of molecular data in taxonomy and biogeography. Molecular phylogenetics and molecular evolution correlate. Molecular evolution is the process of selective changes (mutations) at a molecular level (genes, proteins, etc.) throughout various branches in the tree of life (evolution). Molecular phylogenetics makes inferences of the evolutionary relationships that arise due to molecular evolution and results in the construction of a phylogenetic tree. History The theoretical framew ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sceloporus Becki
''Sceloporus becki'', also known as the island fence lizard, is a species of lizard endemic to the Channel Islands of California. Taxonomy It was once considered a subspecies of the western fence lizard (''Sceloporus occidentalis''), but is now considered to be its own species. Etymology The specific epithet, ''becki'', is in honor of Rollo Howard Beck, an American ornithologist Ornithology is a branch of zoology that concerns the "methodological study and consequent knowledge of birds with all that relates to them." Several aspects of ornithology differ from related disciplines, due partly to the high visibility and th ... who collected the first specimens.Beolens, Bo; Watkins, Michael; Grayson, Michael (2011). ''The Eponym Dictionary of Reptiles''. Baltimore: Johns Hopkins University Press. xiii + 296 pp. . (''Sceloporus occidentalis becki'', p. 21). References *Flaxington, William (2005). Photograph of Island fence lizard on Santa Cruz Island. Calphoto External links N ... [...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] |
Island Fence Lizard
An island (or isle) is an isolated piece of habitat that is surrounded by a dramatically different habitat, such as water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island in a river or a lake island may be called an eyot or ait, and a small island off the coast may be called a holm. Sedimentary islands in the Ganges delta are called chars. A grouping of geographically or geologically related islands, such as the Philippines, is referred to as an archipelago. There are two main types of islands in the sea: continental and oceanic. There are also artificial islands, which are man-made. Etymology The word ''island'' derives from Middle English ''iland'', from Old English ''igland'' (from ''ig'' or ''ieg'', similarly meaning 'island' when used independently, and -land carrying its contemporary meaning; cf. Dutch ''eiland'' ("island"), German ''Eiland'' ("small island")). However, the spelling of the word w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sceloporus Occidentalis Taylori
''Sceloporus occidentalis taylori'' is a subspecies of the western fence lizard, commonly called the Sierra fence lizard. Several subspecies of the western fence lizard, a species of phrynosomatid lizard, are found in the far western part of North America. The subspecific epithet, ''taylori'', is in honor of American herpetologist Edward Harrison Taylor.Beltz, Ellin. 2006. Scientific and Common Names of the Reptiles and Amphibians of North America - Explained. http://ebeltz.net/herps/biogappx.html. See also * Coast Range fence lizard * Island fence lizard * Northwestern fence lizard ''Sceloporus occidentalis occidentalis'' is a subspecies of the western fence lizard. The common name for this taxon is the northwestern fence lizard. This lizard occurs in the state of Washington in the United States.C.M. Hogan, 2008 See also * ... Notes References * Hobart M. Smith (1995) ''Handbook of Lizards: Lizards of the United States and of Canada'', Cornell University Press, 557 pages ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sceloporus Occidentalis Occidentalis
''Sceloporus occidentalis occidentalis'' is a subspecies of the western fence lizard. The common name for this taxon is the northwestern fence lizard. This lizard occurs in the state of Washington in the United States.C.M. Hogan, 2008 See also * * Coast Range fence lizard * Island fence lizard An island (or isle) is an isolated piece of habitat that is surrounded by a dramatically different habitat, such as water. Very small islands such as emergent land features on atolls can be called islets, skerries, cays or keys. An island i ... Line notes References ITIS report: ''Sceloporus occidentalis occidentalis'' (1996)* C. Michael Hogan (2008) "Western fence lizard (''Sceloporus occidentalis'')", Globaltwitcher, ed. Nicklas Stromber Sceloporus Taxa named by Spencer Fullerton Baird {{lizard-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sceloporus Occidentalis Longipes
''Sceloporus occidentalis longipes'' is a subspecies of the western fence lizard, commonly called the Great Basin fence lizard. Several subspecies of the western fence lizard, a species of phrynosomatid lizard, are found in the far western part of North America.C.M. Hogan, 2008 Gallery File:Sceloporus occidentalis longipes - Great Basin Fence Lizard.png, Adult, Malibu, California File:Joshua Tree National Park - Great Basin fence lizard - 01.JPG, Adult, Joshua Tree National Park File:Joshua Tree National Park - Great Basin fence lizard - 03.JPG, Adult, Joshua Tree National Park File:Joshua Tree National Park - Great Basin fence lizard - 04.JPG, Adult, Joshua Tree National Park File:Joshua Tree National Park - Great Basin fence lizard - 05.JPG, Adult, Joshua Tree National Park File:Joshua Tree National Park - Great Basin fence lizard - 06.JPG, Adult, Joshua Tree National Park See also * Coast Range fence lizard * Island fence lizard * Northwestern fence lizard ''Sceloporus o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
