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Jenkins's Shrew Tenrec
Jenkins's shrew tenrec (''Microgale jenkinsae'') is a species of mammal in the family Tenrecidae. It is endemic to Madagascar. Its natural habitats are subtropical or tropical dry forests and shrubland. It is threatened by habitat loss. Description Jenkins's shrew tenrec is extremely small, 143-147mm with the tail being 71-81mm . Its fur is extremely dense, with the top of it being tannish-brown with darker flecks from their agouti gene. On the bottom it is a paler grizzled slate-gray. The tail of this Tenrec is dark brown on the top, and much lighter on the bottom. Habitat This tenrec is restricted to the Mikea Forest between Morombe and Manobo River in Southwest Madagascar. It is generally found in forest habitats. The forest of this region grows on sandy soil and in a semi-arid climate with annual precipitation as low as 350 mm. The canopy, which rarely exceeds twelve meters in height, is less tall than that of the inland forests and of those further north. Its habitat e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steven M
Stephen or Steven is a common English first name. It is particularly significant to Christians, as it belonged to Saint Stephen ( grc-gre, Στέφανος ), an early disciple and deacon who, according to the Book of Acts, was stoned to death; he is widely regarded as the first martyr (or "protomartyr") of the Christian Church. In English, Stephen is most commonly pronounced as ' (). The name, in both the forms Stephen and Steven, is often shortened to Steve or Stevie. The spelling as Stephen can also be pronounced which is from the Greek original version, Stephanos. In English, the female version of the name is Stephanie. Many surnames are derived from the first name, including Stephens, Stevens, Stephenson, and Stevenson, all of which mean "Stephen's (son)". In modern times the name has sometimes been given with intentionally non-standard spelling, such as Stevan or Stevon. A common variant of the name used in English is Stephan ; related names that have found some curr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Construction Industry
Construction is a general term meaning the art and science to form objects, systems, or organizations,"Construction" def. 1.a. 1.b. and 1.c. ''Oxford English Dictionary'' Second Edition on CD-ROM (v. 4.0) Oxford University Press 2009 and comes from Latin ''constructio'' (from ''com-'' "together" and ''struere'' "to pile up") and Old French ''construction''. To construct is the verb: the act of building, and the noun is construction: how something is built, the nature of its structure. In its most widely used context, construction covers the processes involved in delivering buildings, infrastructure, industrial facilities and associated activities through to the end of their life. It typically starts with planning, financing, and design, and continues until the asset is built and ready for use; construction also covers repairs and maintenance work, any works to expand, extend and improve the asset, and its eventual demolition, dismantling or decommissioning. The construction i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Of Madagascar
Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles (including birds) from which they diverged in the Carboniferous, over 300 million years ago. Around 6,400 extant species of mammals have been described divided into 29 orders. The largest orders, in terms of number of species, are the rodents, bats, and Eulipotyphla (hedgehogs, moles, shrews, and others). The next three are the Primates (including humans, apes, monkeys, and others), the Artiodactyla (cetaceans and even-toed ungulates), and the Carnivora (cats, dogs, seals, and others). In terms of cladistics, which reflects evolutionary history, mammals are the only living members of the Synapsida (synapsids); this clade, together with Sauropsida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Afrosoricida
The order Afrosoricida (a Latin-Greek compound name which means "looking like African shrews") contains the golden moles of Southern Africa, the otter shrews of equatorial Africa and the tenrecs of Madagascar. These three families of small mammals have traditionally been considered to be a part of the order Insectivora, and were later included in Lipotyphla after Insectivora was abandoned as a wastebasket taxon, before Lipotyphla was also found to be polyphyletic. Naming Some biologists use Tenrecomorpha as the name for the tenrec-golden mole clade, but Gary Bronner and Paulina Jenkins argue that Afrosoricida is more appropriate, despite their misgivings about the similarity between the name "Afrosoricida" and the unrelated shrew subgenus ''Afrosorex''. However, ''Afrosorex'' Hutterer, 1986 is a synonym of ''Crocidura'' Wagler, 1832, eliminating any confusion. Hedges discussed at length the problems with using Tenrecomorpha and other proposed names for this clade of mammals other ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paulina D
Paulina or Paullina (, ) was a name shared by three relatives of the Roman Emperor Hadrian: his mother, his elder sister and his niece. Mother of Hadrian Domitia Paulina or Paullina, Domitia Paulina Major or Paulina Major, (''Major'' Latin for ''the elder''), also known as Paulina the Elder (?-85/86). Paulina was a Roman woman born in Spain who lived in the 1st century. She was a daughter of a distinguished senatorial family. Paulina originally came from Gades (modern Cádiz, Spain). Gades was one of the wealthiest Roman cities. Little is known of the life of Paulina. She may have been related to Domitia Lucilla the grandmother of Marcus Aurelius. G. Di Vita-Evard speculated that they might have been half-sisters. Paulina married Spanish Roman Publius Aelius Hadrianus Afer, a praetor who was a paternal cousin of Roman Emperor Trajan. Paulina and Afer had two children, a daughter Aelia Domitia Paulina (75-130) and a son emperor Publius Aelius Hadrianus (76-138). Around 85/86 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oryzorictinae
Oryzorictinae is a subfamily of tenrecs endemic to the island of Madagascar. It is the largest of three tenrec subfamilies. Oryzorictinae is thought to have split from the lineage of its closest relative, ''Geogale'', about 30 million years ( Ma) ago. The deepest phylogenetic split within the subfamily, that between '' Oryzorictes'' and a clade composed of ''Microgale'' plus ''Nesogale'' , is thought to have occurred about 28 Ma ago. In turn, ''Microgale'' and ''Nesogale'' are thought to have diverged about 19 Ma ago. Species Subfamily Oryzorictinae * Genus ''Microgale'' ** Short-tailed shrew tenrec (''M. brevicaudata'') **Cowan's shrew tenrec (''M. cowani'') **Drouhard's shrew tenrec (''M. drouhardi'') **Dryad shrew tenrec (''M. dryas'') ** Pale shrew tenrec (''M. fotsifotsy'') ** Gracile shrew tenrec (''M. gracilis'') ** Grandidier's shrew tenrec (''M. grandidieri'') ** Naked-nosed shrew tenrec (''M. gymnorhyncha'') ** Jenkins's shrew tenrec (''M. jenkinsae'') ** Northern shr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Speciation
Speciation is the evolutionary process by which populations evolve to become distinct species. The biologist Orator F. Cook coined the term in 1906 for cladogenesis, the splitting of lineages, as opposed to anagenesis, phyletic evolution within lineages. Charles Darwin was the first to describe the role of natural selection in speciation in his 1859 book ''On the Origin of Species''. He also identified sexual selection as a likely mechanism, but found it problematic. There are four geographic modes of speciation in nature, based on the extent to which speciating populations are isolated from one another: allopatric speciation, allopatric, peripatric speciation, peripatric, parapatric speciation, parapatric, and sympatric speciation, sympatric. Speciation may also be induced artificially, through animal husbandry, agriculture, or laboratory experiments of speciation, laboratory experiments. Whether genetic drift is a minor or major contributor to speciation is the subject of much ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Adaptive Radiation
In evolutionary biology, adaptive radiation is a process in which organisms diversify rapidly from an ancestral species into a multitude of new forms, particularly when a change in the environment makes new resources available, alters biotic interactions or opens new environmental niches. Starting with a single ancestor, this process results in the speciation and phenotypic adaptation of an array of species exhibiting different morphological and physiological traits. The prototypical example of adaptive radiation is finch speciation on the Galapagos ("Darwin's finches"), but examples are known from around the world. Characteristics Four features can be used to identify an adaptive radiation: #A common ancestry of component species: specifically a ''recent'' ancestry. Note that this is not the same as a monophyly in which ''all'' descendants of a common ancestor are included. #A phenotype-environment correlation: a ''significant'' association between environments and the morp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Convergent Evolution
Convergent evolution is the independent evolution of similar features in species of different periods or epochs in time. Convergent evolution creates analogous structures that have similar form or function but were not present in the last common ancestor of those groups. The cladistic term for the same phenomenon is homoplasy. The recurrent evolution of flight is a classic example, as flying insects, birds, pterosaurs, and bats have independently evolved the useful capacity of flight. Functionally similar features that have arisen through convergent evolution are ''analogous'', whereas '' homologous'' structures or traits have a common origin but can have dissimilar functions. Bird, bat, and pterosaur wings are analogous structures, but their forelimbs are homologous, sharing an ancestral state despite serving different functions. The opposite of convergence is divergent evolution, where related species evolve different traits. Convergent evolution is similar to parallel evo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overexploitation
Overexploitation, also called overharvesting, refers to harvesting a renewable resource to the point of diminishing returns. Continued overexploitation can lead to the destruction of the resource, as it will be unable to replenish. The term applies to natural resources such as water aquifers, grazing pastures and forests, wild medicinal plants, fish stocks and other wildlife. In ecology, overexploitation describes one of the five main activities threatening global biodiversity. Ecologists use the term to describe populations that are harvested at an unsustainable rate, given their natural rates of mortality and capacities for reproduction. This can result in extinction at the population level and even extinction of whole species. In conservation biology, the term is usually used in the context of human economic activity that involves the taking of biological resources, or organisms, in larger numbers than their populations can withstand. The term is also used and defined some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mikea Forest
The Mikea Forest (or Forêt des Mikea) is a forested region of southwestern Madagascar, between Manombo and Morombe. More specifically, it stretches from Route Nationale 9 to the west coast and from Mangoky south to the Manombo River. It lies at the transition between dry deciduous forest, which is more common further north in Madagascar, and spiny forest, which is dominant in southwestern Madagascar. Its underlying geology is unconsolidated sand, and the region contains several freshwater lakes. The Forêt des Mikea is one of the largest remaining continuous forest blocks in western and southern Madagascar, but it is not protected and it is threatened by human development. This transitional terrain is one of the least protected of Madagascar's habitats. This soil composition has resulted in a collection of plant and animal species, even distinct from adjacent vegetation on limestone. Small terrestrial mammals found here include the rodents '' Macrotarsomys bastardi'', ''Macro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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