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Tropical Pocket Gopher
The tropical pocket gopher (''Geomys tropicalis'') is a species of rodent in the family Geomyidae. It is endemic to Mexico. Its natural habitat is hot deserts. It is threatened by habitat loss. Description The tropical pocket gopher is cinnamon to brown on its back and head. Its underparts have white fur, and its tail is mostly naked. They have large front feet, along with small eyes and a thick body. Males are on average larger than females. Distribution and habitat The distribution of the tropical pocket gopher is restricted to a small area of the Veracruz moist forests, near the southeastern corner of Tamaulipas Tamaulipas, officially the Free and Sovereign State of Tamaulipas, is a state in Mexico; one of the 31 states which, along with Mexico City, comprise the 32 federal entities of Mexico. It is divided into 43 municipalities. It is located in nor ..., Mexico. Genetics The tropical pocket gopher has a diploid number of 38. This is low compared to similar species. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Alphonso Goldman
Edward Alphonso Goldman (July 7, 1873 – September 2, 1946) was an American field naturalist and mammalogist. He worked extensively in Mexico with Edward William Nelson and described and revised many groups of mammals. He was considered a leading expert on the mammals of North America. History He was born Edward Alphonso Goltman in Mount Carroll, Illinois, on July 7, 1873, to French-German American parents Jacob H. and Laura C. Goltman. They were originally from Pennsylvania before moving to Illinois, then to Nebraska, where Jacob changed the surname to Goldman, and finally California. There, Jacob, who had an interest in natural history, met naturalist Edward William Nelson, who was looking for an assistant, around 1891. Young Edward became this assistant, beginning a friendship and professional relationship with Nelson that was to last until the latter's death.Young, 1947, pp. 91–92. Goldman did well on their first joint collecting trip in California, which ended in Ja ... [...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] |
Endemic
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or bec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexico
Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundary, maritime boundaries with the Pacific Ocean to the west, the Caribbean Sea to the southeast, and the Gulf of Mexico to the east. Mexico covers 1,972,550 km2 (761,610 sq mi), and is the List of countries by area, thirteenth-largest country in the world by land area. With a population exceeding 130 million, Mexico is the List of countries by population, tenth-most populous country in the world and is home to the Hispanophone#Countries, largest number of native Spanish speakers. Mexico City is the capital and List of cities in Mexico, largest city, which ranks among the List of cities by population, most populous metropolitan areas in the world. Human presence in Mexico dates back to at least 8,000 BC. Mesoamerica, considered a cradle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Habitat Loss
Habitat destruction (also termed habitat loss or habitat reduction) occurs when a natural habitat is no longer able to support its native species. The organisms once living there have either moved elsewhere, or are dead, leading to a decrease in biodiversity and Abundance (ecology), species numbers. Habitat destruction is in fact the leading cause of biodiversity loss and species extinction worldwide. Humans contribute to habitat destruction through the Exploitation of natural resources, use of natural resources, agriculture, industrial production and urbanization (urban sprawl). Other activities include mining, logging and trawling. Environmental factors can contribute to habitat destruction more indirectly. Geological processes, climate change, introduced species, introduction of invasive species, ecosystem nutrient depletion, water pollution, water and noise pollution are some examples. Loss of habitat can be preceded by an initial habitat fragmentation. Fragmentation and lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Veracruz Moist Forests
The Veracruz moist forests () is a tropical moist broadleaf forests ecoregion in eastern Mexico. Geography The Veracruz moist forests cover an area of , occupying a portion of Mexico's Gulf Coastal Plain between the Sierra Madre Oriental and the Gulf of Mexico. The forests extend from southern Tamaulipas across northern Veracruz, eastern San Luis Potosí, and portions of eastern Hidalgo, northeastern Puebla and northern Queretaro. The Huasteca region includes much of the ecoregion. To the north, the forests transition to the dry lowland Tamaulipan mezquital and the upland Tamaulipan matorral. To the west, the Sierra Madre Oriental pine–oak forests occupy the higher elevations of the Sierra Madre Oriental. The Moctezuma River and its tributaries have carved deep canyons through the Sierra Madre, which allow moist air from the Gulf of Mexico to flow further west into the plateaus and mountains, including the Sierra Gorda, and the moist forests extend westwards along the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tamaulipas
Tamaulipas, officially the Free and Sovereign State of Tamaulipas, is a state in Mexico; one of the 31 states which, along with Mexico City, comprise the 32 federal entities of Mexico. It is divided into 43 municipalities. It is located in northeast Mexico and is bordered by the states of Nuevo León to the west, San Luis Potosí to the southwest, and Veracruz to the southeast. To the north, it has a stretch of the U.S.–Mexico border with the state of Texas, and to the east it is bordered by the Gulf of Mexico. In addition to the capital city, Ciudad Victoria, the state's largest cities include Reynosa, Matamoros, Nuevo Laredo, Tampico, and Mante. Etymology The name Tamaulipas is derived from ''Tamaholipa'', a Huastec term in which the ''tam-'' prefix signifies "place (where)". No scholarly agreement exists on the meaning of ''holipa'', but "high hills" is a common interpretation. Another explanation of the state name is that it is derived from ''Ta ma ho'lipam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genetic Variability
Genetic variability is either the presence of, or the generation of, genetic differences. It is defined as "the formation of individuals differing in genotype, or the presence of genotypically different individuals, in contrast to environmentally induced differences which, as a rule, cause only temporary, nonheritable changes of the phenotype." Genetic variability in a population promotes biodiversity, as it ensures that no two living things are exactly alike. While many factors can cause genetic variability, some factors can also decrease genetic variability. Species variability refers to the observable differences within a species, often encompassing morphological, physiological, behavioral, or phenotypic traits. While genetic variability contributes to species variability, external factors like the environment or developmental conditions can also influence the traits expressed. Causes There are many sources of genetic variability in a population: *Homologous recombination is a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geomys
The genus ''Geomys'' contains 12 extant species of pocket gophersSearch results for "''Geomys''" on thASM Mammal Diversity Database often collectively referred to as the eastern pocket gophers. Like all pocket gophers, members of this genus are fossorial herbivores. Species Extant species include: * Desert pocket gopher (''Geomys arenarius'') * Attwater's pocket gopher (''G. attwateri'') * Baird's pocket gopher (''G. breviceps'') * Plains pocket gopher (''G. bursarius'') * Hall's pocket gopher (''G. jugossicularis'') * Knox Jones's pocket gopher (''G. knoxjonesi'') * Sand Hills pocket gopher (''G. lutescens'') * Texas pocket gopher (''G. personatus'') * Southeastern pocket gopher (''G. pinetis'') * Strecker's pocket gopher (''G. streckeri'') * Central Texas pocket gopher (''G. texensis'') * Tropical pocket gopher The tropical pocket gopher (''Geomys tropicalis'') is a species of rodent in the family Geomyidae. It is endemic to Mexico. Its natural habitat is hot dese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemic Mammals Of Mexico
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are Indigenous (ecology), indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural History Of Tamaulipas
Nature is an inherent character or constitution, particularly of the Ecosphere (planetary), ecosphere or the universe as a whole. In this general sense nature refers to the Scientific law, laws, elements and phenomenon, phenomena of the physical world, including life. Although humans are part of nature, human activity or humans as a whole are often described as at times at odds, or outright Anthropocentrism, separate and even superior to nature. During the advent of modern scientific method in the last several centuries, nature became the passive reality, organized and moved by divine laws. With the Industrial Revolution, nature increasingly became seen as the part of reality deprived from intentional intervention: it was hence considered as sacred by some traditions (Jean-Jacques Rousseau, Rousseau, American transcendentalism) or a mere decorum for divine providence or human history (Hegel, Marx). However, a vitalist vision of nature, closer to the pre-Socratic one, got reborn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
