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Pilar Tuco-tuco
The Pilar tuco-tuco (''Ctenomys pilarensis'') is a species of rodent in the family Ctenomyidae. It is found in Ñeembucú and Misiones Departments in southern Paraguay, east of the city of Pilar. The species lives in areas with sandy soil. It is present in a few isolated populations and is threatened by conversion of its habitat to agriculture and its treatment as a pest. Its karyotype A karyotype is the general appearance of the complete set of chromosomes in the cells of a species or in an individual organism, mainly including their sizes, numbers, and shapes. Karyotyping is the process by which a karyotype is discerned by de ... has 2n = 48 or 50 and FN = 50. References Mammals of Paraguay Tuco-tucos Mammals described in 1993 {{rodent-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rodent
Rodents (from Latin , 'to gnaw') are mammals of the Order (biology), order Rodentia ( ), which are characterized by a single pair of continuously growing incisors in each of the upper and Mandible, lower jaws. About 40% of all mammal species are rodents. They are native to all major land masses except for Antarctica, and several oceanic islands, though they have subsequently been introduced to most of these land masses by human activity. Rodents are extremely diverse in their ecology and lifestyles and can be found in almost every terrestrial habitat, including human-made environments. Species can be arboreal, fossorial (burrowing), saltatorial/ricochetal (leaping on their hind legs), or semiaquatic. However, all rodents share several morphological features, including having only a single upper and lower pair of ever-growing incisors. Well-known rodents include Mouse, mice, rats, squirrels, prairie dogs, porcupines, beavers, Cavia, guinea pigs, and hamsters. Once included wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ctenomyidae
A tuco-tuco is a neotropical rodent in the family Ctenomyidae. Tuco-tucos belong to the only living genus of the family Ctenomyidae, ''Ctenomys'', but they include approximately 60 different species. The common name, "tuco-tuco", comes from the "tuc-tuc" sound they make while they dig their burrows."Southern Tuco-tuco (''Ctenomys australis'')" ARKive. 4 October 2013. The relationships among the species are debated by taxonomists. It has been described that they are in a state of "taxonomic chaos", but banded karyotypes have been used to help make progress on their taxonomic study. Their closest relatives are Octodon, degus and other Octodontidae, octodontids. All species of tuco-tucos are found in South America from Peru and central Brazil southwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ñeembucú Department
Ñeembucú (; GuaranÃ: ''Ñe'ẽmbuku'') is a department located in the south of the Eastern Region of Paraguay. The capital is Pilar. The department is almost entirely rural, and is home to some of the oldest and best-preserved Jesuit ruins, which are located near the town of Humaitá. Districts The department is divided in 16 districts: # Alberdi # Cerrito # Desmochados # General José Eduvigis DÃaz # Guazú Cuá # Humaitá # Isla Umbú # Laureles # Mayor José J. Martinez # Paso de Patria # Pilar # San Juan Bautista del Ñeembucú # Tacuaras # Villa Franca # Villa Oliva # VillalbÃn Geography Land The terrain in Ñeembucú is markedly flat, covered mostly in flat, grassy fields only broken by the occasional wetland swamp or green "monte". Montes, despite their name, are not mountains at all, but patches of dense trees and brush that provide shade to the cattle who graze on the flat plains surrounding them. Almost all of the land in Ñeembucú is use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Misiones Department
Misiones () is a Departments of Paraguay, department located in the southern region of Paraguay. Its capital is San Juan Bautista, Paraguay, San Juan Bautista. The eighth of Paraguay's 17 departments, it was created in 1906, then known as the ''San Ignacio Department'', and was not given its present name until 1945. Its current name reflects its status as home to several Jesuit Reductions, or missions. Misiones borders the departments of Paraguarà Department, Paraguarà and Caazapá Department, Caazapá to the north, Itapúa Department, Itapúa to the east, Ñeembucú Department, Ñeembucú to the west, and the Corrientes Province of Argentina to the south. History The modern settling of Misiones began with the arrival of Jesuit missionaries to the region in the 17th century and the subsequent establishment of several reductions whose purpose was to both civilize and Catechism, catechize the indigenous Guarani people, Guaranà peoples. While several of these reductions w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraguay
Paraguay, officially the Republic of Paraguay, is a landlocked country in South America. It is bordered by Argentina to the Argentina–Paraguay border, south and southwest, Brazil to the Brazil–Paraguay border, east and northeast, and Bolivia to the northwest. It has a population of around 6.1 million, nearly 2.3 million of whom live in the Capital city, capital and largest city of Asunción, and its surrounding metro area. Spanish conquistadores arrived in 1524, and in 1537 established the city of Asunción, the first capital of the Governorate of the RÃo de la Plata. During the 17th century, Paraguay was the center of Reductions, Jesuit missions, where the native Guaranà people were converted to Christianity and introduced to European culture. After the Suppression of the Society of Jesus, expulsion of the Jesuits from Spanish territories in 1767, Paraguay increasingly became a peripheral colony. Following Independence of Paraguay, independence from Spain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pilar, Paraguay
Pilar () is the capital city of the Paraguayan Departments of Paraguay, department of Ñeembucú, located along the Paraguay River in the southwestern part of the country. Located about from Asunción, Pilar serves as an important center of commerce and government for the far southwestern region of the country. Etymology Pilar was founded by order of the governor-intendant Pedro Melo de Portugal on October 12, 1779 by settlers from Asunción with the name of Villa del Ñeembucú. Four years later it was called Villa del Pilar, a name owed to the Spanish people, Spanish priest Marcial Antonio Uliambre, originally from Zaragoza, where the Our Lady of the Pillar, Virgin of Pillar is venerated. Its foundation had fundamental strategic purposes, since it served as a troop station to oversee traffic in the Paraguay River. According to a census in 1783, its population was 2,355 inhabitants. History During the events that led to the Independence of Paraguay, Captain Blás José Rox ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karyotype
A karyotype is the general appearance of the complete set of chromosomes in the cells of a species or in an individual organism, mainly including their sizes, numbers, and shapes. Karyotyping is the process by which a karyotype is discerned by determining the chromosome complement of an individual, including the number of chromosomes and any abnormalities. A karyogram or idiogram is a graphical depiction of a karyotype, wherein chromosomes are generally organized in pairs, ordered by size and position of centromere for chromosomes of the same size. Karyotyping generally combines light microscopy and photography in the metaphase of the cell cycle, and results in a photomicrographic (or simply micrographic) karyogram. In contrast, a schematic karyogram is a designed graphic representation of a karyotype. In schematic karyograms, just one of the sister chromatids of each chromosome is generally shown for brevity, and in reality they are generally so close together that they look as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ploidy
Ploidy () is the number of complete sets of chromosomes in a cell, and hence the number of possible alleles for autosomal and pseudoautosomal genes. Here ''sets of chromosomes'' refers to the number of maternal and paternal chromosome copies, respectively, in each homologous chromosome pair—the form in which chromosomes naturally exist. Somatic cells, tissues, and individual organisms can be described according to the number of sets of chromosomes present (the "ploidy level"): monoploid (1 set), diploid (2 sets), triploid (3 sets), tetraploid (4 sets), pentaploid (5 sets), hexaploid (6 sets), heptaploid or septaploid (7 sets), etc. The generic term polyploid is often used to describe cells with three or more sets of chromosomes. Virtually all sexually reproducing organisms are made up of somatic cells that are diploid or greater, but ploidy level may vary widely between different organisms, between different tissues within the same organism, and at different stages in an o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Karyotype
A karyotype is the general appearance of the complete set of chromosomes in the cells of a species or in an individual organism, mainly including their sizes, numbers, and shapes. Karyotyping is the process by which a karyotype is discerned by determining the chromosome complement of an individual, including the number of chromosomes and any abnormalities. A karyogram or idiogram is a graphical depiction of a karyotype, wherein chromosomes are generally organized in pairs, ordered by size and position of centromere for chromosomes of the same size. Karyotyping generally combines light microscopy and photography in the metaphase of the cell cycle, and results in a photomicrographic (or simply micrographic) karyogram. In contrast, a schematic karyogram is a designed graphic representation of a karyotype. In schematic karyograms, just one of the sister chromatids of each chromosome is generally shown for brevity, and in reality they are generally so close together that they look as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Of Paraguay
A mammal () is a vertebrate animal of the Class (biology), 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 Evolution of mammalian auditory ossicles, middle ear bones. These characteristics distinguish them from reptiles and birds, from which their ancestors Genetic divergence, diverged in the Carboniferous Period over 300 million years ago. Around 6,640 Neontology#Extant taxon, extant species of mammals have been described and divided into 27 Order (biology), 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, Mole (animal), moles and shrews). The next three are the primates (including humans, monkeys and lemurs), the Artiodactyl, even-toed ungulates (including pigs, camels, and whales), and the Carnivora (including Felidae, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tuco-tucos
A tuco-tuco is a neotropical rodent in the family Ctenomyidae. Tuco-tucos belong to the only living genus of the family Ctenomyidae, ''Ctenomys'', but they include approximately 60 different species. The common name, "tuco-tuco", comes from the "tuc-tuc" sound they make while they dig their burrows."Southern Tuco-tuco (''Ctenomys australis'')" ARKive. 4 October 2013. The relationships among the species are debated by s. It has been described that they are in a state of "taxonomic chaos", but banded karyotypes have been used to help make progress on their taxonomic study. Their closest relatives are [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
