|
Southern Pudú
The southern pudu (''Pudu puda'', Mapudungun ''püdü'' or ''püdu'', , ) is a species of South American deer native to the Valdivian temperate forests of south-central Chile and adjacent Argentina. It is classified as Near Threatened in the IUCN Red List. Description The southern pudu is characterized by being the second smallest deer in the world. It is slightly larger than its sister species, the northern pudu, being tall at the shoulder and weighs . The antlers of the southern pudu grow to be long and tend to curve back, somewhat like a mountain goat. Its coat is a dark chestnut-brown, and tends to tuft in the front, covering the antlers. Range and habitat The southern pudu lives in forests, including both mature and disturbed forests, typically with a dense understory, but it does nevertheless prefer open spaces with rich vegetation for feeding. It is found at lower elevations than its sister species, from sea level to elevation. In the Chilean Coast Range the pudu is fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juan Ignacio Molina
Fr. Juan Ignacio Molina (; (June 24, 1740 – September 12, 1829) was a Chilean-Spanish Jesuit priest, natural history, naturalist, historian, translator, geographer, botanist, ornithologist, and linguist. He is usually referred to as Abate Molina (Abbot Molina), and is also sometimes known by the Italian form of his name, Giovanni Ignazio Molina. He was one of the precursors of the theory of the gradual evolution of species, 44 years before Charles Darwin, Darwin, who repeatedly quoted him in "The Origin of Species". Biography Early years Molina was born at Guaraculén, a big farm located near Villa Alegre, Chile, Villa Alegre (General Captaincy of Chile), where he lived until he was 5 years old. In the current province of Linares Province, Linares, in the Maule Region of Chile. His parents were Agustín Molina and Francisca González Bruna. From an early age he was attracted to the nature of his environment, and in addition to his school work, he enjoyed observing nature on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nothofagus Dombeyi
''Nothofagus dombeyi'', Dombey's beech, coigue, coihue or coigüe (from Mapudungun ''koywe'') is a tree species native to southern Chile and the Andean parts of Argentine Patagonia. It is a fast-growing species that can live in a wide range of climatic conditions, and forms dense forests. It is cultivated for its timber, and as an ornamental subject. The shadow produced by stands of ''Nothofagus dombeyi'' is an important factor that keeps the air around streams cool and with relatively low daily temperature variations. Description It can become a large tree, up to high and in diameter. One tree, felled by a storm in 1954, reportedly measured in diameter at the height of a man's chest and a total volume, including the branches, of 87 m³. The coihue usually has elegant branches which are flattened horizontally. The leaves are evergreen, small (25–40 mm long and 10–16 mm wide), thick, coriaceous (leathery) and lustrous, dark green, with toothed borders and an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Juan Ignacio Molina
In biology, a taxon (back-formation from ''taxonomy''; : taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion, especially in the context of rank-based (" Linnaean") nomenclature (much less so under phylogenetic nomenclature). If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were presumably set forth in prehistoric times by hunter-gatherers, as suggested by the fairly sophisticated folk taxonomies. Much later, Aristotle, and later still ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Of Argentina
This is a list of the native mammal species recorded in Argentina. As of January 2020, the list contains 402 mammal species from Argentina, of which one is extinct, seven are critically endangered, seventeen are endangered, sixteen are vulnerable, and thirty are near threatened. The following tags are used to highlight each species' conservation status as assessed by the International Union for Conservation of Nature; those on the left are used here, those in the second column in some other articles: Subclass: Theria Infraclass: Metatheria Superorder: Ameridelphia =Order: Didelphimorphia (common opossums)= Didelphimorphia is the order of common opossums of the Western Hemisphere. Opossums probably diverged from the basic South American marsupials in the late Cretaceous or early Paleocene. They are small to medium-sized marsupials, about the size of a large house cat, with a long snout and prehensile tail. *Family: Didelphidae (American opossums) **Subfamily: Caluromyi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Of Chile
A mammal () is a vertebrate animal of the class Mammalia (). Mammals are characterised by the presence of milk-producing mammary glands for feeding their young, a broad neocortex region of the brain, fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles and birds, from which their ancestors diverged in the Carboniferous Period over 300 million years ago. Around 6,640 extant species of mammals have been described and divided into 27 orders. The study of mammals is called mammalogy. The largest orders of mammals, by number of species, are the rodents, bats, and eulipotyphlans (including hedgehogs, moles and shrews). The next three are the primates (including humans, monkeys and lemurs), the even-toed ungulates (including pigs, camels, and whales), and the Carnivora (including cats, dogs, and seals). Mammals are the only living members of Synapsida; this clade, together with Sauropsida (reptiles and birds), constitutes the larg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Capreolinae
The Capreolinae, Odocoileinae, or the New World deer are a subfamily of deer. Alternatively, they are known as the telemetacarpal deer, due to their bone structure being different from the plesiometacarpal deer subfamily Cervinae. The telemetacarpal deer maintain their distal lateral metacarpals, while the plesiometacarpal deer maintain only their proximal lateral metacarpals. The Capreolinae are believed to have originated in the Middle Miocene, between 7.7 and 11.5 million years ago, in Central Asia. Although this subfamily is called New World deer in English, it includes reindeer, moose, and roe deer, all of which live in Eurasia in the Old World. Classification The following extant genera and species are recognized:Alvarez D. (2007) * Tribe Capreolini ** Genus '' Capreolus'' *** Western roe deer (''C. capreolus'') *** Eastern roe deer (''C. pygargus'') **Genus '' Hydropotes'' *** Water deer (''H. inermis'') * Tribe Alceini **Genus ''Alces'' *** Moose or Eurasian elk (' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chiloé Island
Chiloé Island (, , ), also known as Greater Island of Chiloé (''Isla Grande de Chiloé''), is the largest island of the Chiloé Archipelago off the west coast of Chile, in the Pacific Ocean. The island is located in southern Chile, in the Los Lagos Region. The island is roughly rectangular. Its southwestern half is a wilderness of contiguous forests and swamps. Mountains form a belt running from the northwestern to the southeastern corner of the island. Cordillera del Piuchén make up the northern mountains and the more subdued Cordillera de Pirulil gathers the southern mountains. The landscape of the northeastern sectors of Chiloé Island is dominated by rolling hills with a mosaic of pastures, forests and cultivated fields. While the western shores are rocky and relatively straight, the eastern and northern shores contain many inlets, bays and peninsulas, and it is here where all towns and cities lie. Geographically, the bulk of the island is a continuation of the Chilean C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gene Flow
In population genetics, gene flow (also known as migration and allele flow) is the transfer of genetic variation, genetic material from one population to another. If the rate of gene flow is high enough, then two populations will have equivalent allele frequencies and therefore can be considered a single effective population. It has been shown that it takes only "one migrant per generation" to prevent populations from diverging due to Genetic drift, drift. Populations can diverge due to Natural selection, selection even when they are exchanging alleles, if the selection pressure is strong enough. Gene flow is an important mechanism for transferring genetic diversity among populations. Migrants change the distribution of genetic diversity among populations, by modifying allele frequencies (the proportion of members carrying a particular variant of a gene). High rates of gene flow can reduce the genetic differentiation between the two groups, increasing homogeneity. Gene flow has b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Haplotype
A haplotype (haploid genotype) is a group of alleles in an organism that are inherited together from a single parent. Many organisms contain genetic material (DNA) which is inherited from two parents. Normally these organisms have their DNA organized in two sets of pairwise similar chromosomes. The offspring gets one chromosome in each pair from each parent. A set of pairs of chromosomes is called diploid and a set of only one half of each pair is called haploid. The haploid genotype (haplotype) is a genotype that considers the singular chromosomes rather than the pairs of chromosomes. It can be all the chromosomes from one of the parents or a minor part of a chromosome, for example a sequence of 9000 base pairs or a small set of alleles. Specific contiguous parts of the chromosome are likely to be inherited together and not be split by chromosomal crossover, a phenomenon called genetic linkage. As a result, identifying these statistical associations and a few alleles of a specif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cytochrome B
Cytochrome b is a protein found in the membranes of aerobic cells. In eukaryotic mitochondria (inner membrane) and in aerobic prokaryotes, cytochrome b is a component of respiratory chain complex III () — also known as the bc1 complex or ubiquinol-cytochrome c reductase. In plant chloroplasts and cyanobacteria, there is a homologous protein, cytochrome b6, a component of the plastoquinone-plastocyanin reductase (), also known as the b6f complex. These complexes are involved in electron transport, the pumping of protons to create a proton-motive force ( PMF). This proton gradient is used for the generation of ATP. These complexes play a vital role in cells. Structure and function Cytochrome b/b6 is an integral membrane protein of approximately 400 amino acid residues that probably has 8 transmembrane segments. In plants and cyanobacteria, cytochrome b6 consists of two protein subunits encoded by the petB and petD genes. Cytochrome b/b6 non-covalently binds two heme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MtDNA Control Region
A mitochondrion is a specialized organelle found in the cytoplasm of eukaryotic cells, which is the powerhouse of cells that produce energy through oxidative phosphorylation. Besides producing energy, they are crucial for various cellular functions such as calcium signaling, controlling metabolism, synthesizing hemoglobin and steroids, and regulating programmed cell death. Besides the production of ATP, there is a complex relationship between the mitochondrial genome (mtDNA) and the nuclear genome (nDNA). Unlike nuclear DNA which resides in the nucleus, mtDNA is inherited from the mother. Upon fertilization, the mtDNA of the sperm is typically lost through ubiquitination, and only the egg contributes to the mtDNA of the zygote, due to the significant difference in mtDNA copy number between the sperm (about 100 copies) and the egg (about 100,000 copies). Mitochondrial DNA (mtDNA) Is a small, abundant, and purified molecule of DNA. It is a closed, circular, double-stranded molecu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gayana
''Gayana'' is a biannual peer-reviewed scientific journal published by the University of Concepción. It covers zoology and oceanology works on taxonomy, systematics, phylogeny, biogeography, environmental biology, biotechnology, limnology, hydrology and atmospheric sciences. It was established by the merger of two journals; ''Gayana Oceanología'' and ''Gayana Zoología''. '' Gayana Botánica'' remains a separate journal. Abstracting and indexing The journal is abstracted and indexed in Biological Abstracts, BIOSIS Previews, Essential Science Indicators and Zoological Record. BIOSIS Previews BIOSIS Previews is an English-language, bibliographic database service, with abstracts and citation indexing. It is part of ''Clarivate Analytics Web of Science'' suite. BIOSIS Previews indexes data from 1926 to the present. BIOSIS Previews i ..., References External links * Multilingual journals University of Concepción academic journals Academic journals established in 199 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
