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Cnemidophorus
''Cnemidophorus'' is a genus of lizards in the family Teiidae. Species in the genus ''Cnemidophorus'' are commonly referred to as whiptail lizards or racerunners. The genus is native to South America, Central America, and the West Indies. Taxonomy Reeder et al. (2002) re-examined the nomenclature for the genus ''Cnemidophorus'' (''sensu lato'') and split it into the two genera ''Aspidoscelis'' and ''Cnemidophorus'' (''sensu stricto''). A further split by Harvey et al. (2012) added the genera ''Ameivula'' and '' Contomastix''. Etymology The name ''Cnemidophorus'' literally means "greave-wearing", from the Ancient Greek ' (combining form of ', "greave", a leg armor) and ' ("bearer"). Reproduction In some of the ''Cnemidophorus'' species, there are no males, and they reproduce through parthenogenesis. This is well known in bees and aphids, but is very rare in vertebrates. Those species without males are now known to originate through hybridization, or interspecific breeding. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cnemidophorus Arubensis
''Cnemidophorus arubensis'', commonly known as the Aruba whiptail or ''cododo,'' is a species of whiptail lizard in the genus ''Cnemidophorus''. The female and young lizards are known as (English: Lizard), while the mature males are called (English: Blue-blue). This lizard species is endemic to the island of Aruba and is recognized as the most common and abundant species of lizard on the island. Identification Female lizards and the young are varying shades of brown. Mature females display longitudinal bands on the upper part of their bodies, extending from the head to the tail. In addition, they exhibit blue Eyespot (mimicry), eyespots on their sides and the Hindlimb, hind limbs. ''C. arubensis'' typically grow to a length of approximately Whiptails (Teiidae) possess Femoral pore, femoral pores, although they are larger in males compared to females. Additionally, males have pre-anal pores. Diet One of the notable adaptations observed within the Teiidae family of lizards i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cnemidophorus Arenivagus
''Cnemidophorus arenivagus'' is a species of teiid lizard found in Venezuela. References {{Taxonbar, from=Q2980942 arenivagus Reptiles described in 1997 Taxa named by Allan L. Markezich Taxa named by Charles J. Cole Taxa named by Herbert C. Dessauer Reptiles of Venezuela ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Teiidae
Teiidae is a family of lacertoidean lizards native to the Americas. Members of this family are generally known as whiptails or racerunners; however, tegus also belong to this family. Teiidae is sister to the Gymnophthalmidae, Gymnopthalmidae, and both families comprise the Teiioidea. The Teiidae includes several Parthenogenesis, parthenogenic species – a mode of clonal reproduction. Presently, the Teiidae consists of approximately 150 species in eighteen genus, genera. Morphology and behavior Teiids can be distinguished from other lizards by the following characteristics: large rectangular scale (zoology), scales that form distinct transverse rows Anatomical terms of location#Dorsal and ventral, ventrally and generally small granular scale (zoology), scales Dorsum (anatomy), dorsally, head scales that are separate from the skull bones, and teeth that are solid at the base and "glued" to the jaw bones. Additionally, all teiids have a forked, snake-like tongue. They all possess we ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parthenogenesis
Parthenogenesis (; from the Greek + ) is a natural form of asexual reproduction in which the embryo develops directly from an egg without need for fertilization. In animals, parthenogenesis means the development of an embryo from an unfertilized Gametophyte, egg cell. In plants, parthenogenesis is a component process of apomixis. In algae, parthenogenesis can mean the development of an embryo from either an individual sperm or an individual egg. Parthenogenesis occurs naturally in some plants, algae, invertebrate animal species (including nematodes, some tardigrades, water fleas, some scorpions, aphids, some mites, some bees, some Phasmatodea, and parasitic wasps), and a few vertebrates, such as some fish, amphibians, and reptiles. This type of reproduction has been induced artificially in animal species that naturally reproduce through sex, including fish, amphibians, and mice. Normal egg cells form in the process of meiosis and are haploid, with half as many chromosomes as t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aspidoscelis
''Aspidoscelis'' is a genus of whiptail lizards in the family Teiidae. Taxonomy The nomenclature for the genus ''Aspidoscelis'' was published by T.W. Reeder et al. in 2002. Many species that were formerly included in the genus '' Cnemidophorus'' are now considered ''Aspidoscelis'' based upon divergent characters between the two groups. Etymology The name ''Aspidoscelis'' literally means "shield-leg", from the Ancient Greek ("shield") and ("leg"). Species The following species are recognized as being valid. *'' Aspidoscelis angusticeps'' – Yucatán whiptail *'' Aspidoscelis arizonae'' – Arizona striped whiptail *''Aspidoscelis burti'' – canyon spotted whiptail *'' Aspidoscelis calidipes'' – Tepalcatepec Valley whiptail *'' Aspidoscelis carmenensis'' – Carmen Island whiptail *''Aspidoscelis ceralbensis'' – Cerralvo Island whiptail *''Aspidoscelis communis'' – Colima giant whiptail *''Aspidoscelis costatus'' – western Mexico whiptail lizard *''Aspidos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Asexual Reproduction
Asexual reproduction is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes. The offspring that arise by asexual reproduction from either unicellular or multicellular organisms inherit the full set of genes of their single parent and thus the newly created individual is genetically and physically similar to the parent or an exact clone of the parent. Asexual reproduction is the primary form of reproduction for single-celled organisms such as archaea and eubacteria, bacteria. Many Eukaryote, eukaryotic organisms including plants, animals, and Fungus, fungi can also reproduce asexually. In Vertebrate, vertebrates, the most common form of asexual reproduction is parthenogenesis, which is typically used as an alternative to sexual reproduction in times when reproductive opportunities are limited. Some Monitor lizard, monitor lizards, including Komodo dragons, can reproduce asexually. While all prokaryotes reproduce without the fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ameivula
''Ameivula'' is a genus of lizards in the Family (biology), family Teiidae. The genus is Endemism, endemic to South America. Many species in the genus ''Ameivula'' were previously listed in the genus ''Cnemidophorus''. Species The following 11 species, listed alphabetically, are recognized as being valid. www.reptile-database.org. *''Ameivula abalosi'' *''Ameivula apipensis'' *''Ameivula cipoensis'' *''Ameivula confusioniba'' *''Ameivula jalapensis'' *''Ameivula mumbuca'' *''Ameivula nativo'' *''Ameivula nigrigula'' *''Ameivula ocellifera'' – Spix's whiptail *''Ameivula pyrrhogularis'' *''Ameivula xacriaba'' ''Nota bene'': A Binomial nomenclature, binomial authority in parentheses indicates that the species was originally described in a genus other than ''Ameivula''. References Further reading *species:Michael Brown Harvey, Harvey MB, species:Gabriel N. Ugueto, Ugueto GN, species:Ronald Louis Gutberlet Jr., Gutberlet RL Jr (2012). "Review of Teiid Morp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Greave
A greave (from the Old French ''greve'' "shin, shin armor") or jambeau is a piece of armor that protects the human leg, leg. Description The primary purpose of greaves is to protect the tibia from attack. The tibia, or shinbone, is very close to the skin, and is therefore extremely vulnerable to just about any kind of attack. Furthermore, a successful attack on the shin results in that leg being rendered useless, greatly hampering one's ability to maneuver in any way. Greaves were used to counteract this. They usually consisted of a metal exterior with an inner padding of felt. The felt padding was particularly important because, without it, any blow would transfer directly from the metal plating to the shin. History Bronze Age Bronze greaves were used in Bronze Age Europe by the Mycenaean Greece, Mycenaean Greeks and the Central European Urnfield culture, among others. Ancient Greece and Rome The reference to greaves (Ancient Greek: κνημίδες) exists in various texts of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Combining Form
Neoclassical compounds are compound words composed from combining forms (which act as affixes or stems) derived from classical languages (classical Latin or ancient Greek) roots. Neo-Latin comprises many such words and is a substantial component of the technical and scientific lexicon of English and other languages, via international scientific vocabulary (ISV). For example, Greek '' bio-'' combines with ''-graphy'' to form ''biography'' ("life" + "writing/recording"). Source of international technical vocabulary Neoclassical compounds represent a significant source of Neo-Latin vocabulary. Moreover, since these words are composed from classical languages whose prestige is or was respected throughout the Western European culture, these words typically appear in many different languages. Their widespread use makes technical writing generally accessible to readers who may only have a smattering of the language in which it appears. Not all European languages have been equally re ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vertebrate
Vertebrates () are animals with a vertebral column (backbone or spine), and a cranium, or skull. The vertebral column surrounds and protects the spinal cord, while the cranium protects the brain. The vertebrates make up the subphylum Vertebrata with some 65,000 species, by far the largest ranked grouping in the phylum Chordata. The vertebrates include mammals, birds, amphibians, and various classes of fish and reptiles. The fish include the jawless Agnatha, and the jawed Gnathostomata. The jawed fish include both the Chondrichthyes, cartilaginous fish and the Osteichthyes, bony fish. Bony fish include the Sarcopterygii, lobe-finned fish, which gave rise to the tetrapods, the animals with four limbs. Despite their success, vertebrates still only make up less than five percent of all described animal species. The first vertebrates appeared in the Cambrian explosion some 518 million years ago. Jawed vertebrates evolved in the Ordovician, followed by bony fishes in the Devonian. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
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. It is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), morphology, behaviour, or ecological niche. In addition, palaeontologists 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. About 14% of these had been described by 2011. All species (except viruses) are given a binomial nomenclature, two-part name, a "binomen". The first part of a binomen is the name of a genus to which the species belongs. The second part is called the specific name (zoology), specific name or the specific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
