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Drymaeus Pseudofusoides
''Drymaeus'' is a large genus of medium-sized, air-breathing tropical land snails, terrestrial pulmonate gastropod molluscs belonging to the subfamily Peltellinae within the family Bulimulidae. It is one of the most species-rich genera among Neotropical land mollusks, comprising approximately 300 species distributed from Florida through Central and South America. Taxonomy and etymology The name ''Drymaeus'' was first introduced by Johann Christian Albers in 1850 as a subgenus of '' Bulimus'' Bruguière, 1789. The name stems from the greek word δρῦς (drys), meaning "tree" or "oak", the word ''drymaeus'' itself meaning "lives in the woods". The genus continues to be the subject of active taxonomic and evolutionary research. Currently, it is classified within the family Bulimulidae, a group of mostly arboreal snails in the superfamily Orthalicoidea. Historically, classification within ''Drymaeus'' has relied heavily on shell morphology, but this approach has proven problemat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drymaeus Strigatus
''Drymaeus strigatus'' is a species of tropical air-breathing land snail, a pulmonate gastropod mollusk in the family Bulimulidae. Distribution * PeruBreure A. S. H. & Mogollón Avila V. (2010). "Well-known and little-known: miscellaneous notes on Peruvian Orthalicidae (Gastropoda, Stylommatophora)". ''Zoologische Mededelingen'' 84HTM. * Ecuador Description The living animal is brownish-beige, slightly darker just above the foot. The tentacles are whitish at the base and turning light-beige towards the eyes. References This article incorporates CC-BY-3.0 text from the reference Further reading * Pilsbry H. A. (1897-1898). "American Bulimulidae: ''Bulimulus'', ''Neopetraeus'', ''Oxychona'', and South American ''Drymaeus''". ''Manual of Conchology George Washington Tryon Jr. (20 May 1838 – 5 February 1888) was an American malacologist who worked at the Academy of Natural Sciences in Philadelphia. Biography George Washington Tryon was the son of Edward K. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Word Stem
In linguistics, a word stem is a word part responsible for a word's lexical meaning. The term is used with slightly different meanings depending on the morphology of the language in question. For instance, in Athabaskan linguistics, a verb stem is a root that cannot appear on its own and that carries the tone of the word. Typically, a stem remains unmodified during inflection with few exceptions due to apophony (for example in Polish, ("city") and ("in the city"); in English, ''sing'', ''sang'', and ''sung'', where it can be modified according to morphological rules or peculiarities, such as sandhi). Word stem comparisons across languages have helped reveal cognates that have allowed comparative linguists to determine language families and their history. Root vs stem The word ''friendship'' is made by attaching the morpheme ''-ship'' to the root word ''friend'' (which some linguists also call a stem). While the inflectional plural morpheme ''-s'' can be attached to '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mesembrinus
''Mesembrinus'' is a genus of tropical land snails, terrestrial pulmonate gastropod molluscs in the subfamily Peltellinae of the family Bulimulidae. ''Mesembrinus'' was previously considered a subgenus of ''Drymaeus ''Drymaeus'' is a large genus of medium-sized, air-breathing tropical land snails, Terrestrial animal, terrestrial pulmonate gastropod Mollusca, molluscs belonging to the subfamily Peltellinae within the family Bulimulidae. It is one of the most ...'', but research published in 2023 has elevated the taxon to genus level. Species Currently, these species are included in ''Mesembrinus'': References Bulimulidae Gastropod genera Taxa described in 1850 {{Bulimulidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antidrymaeus
''Antidrymaeus'' is a genus of tropical land snails, terrestrial pulmonate gastropod molluscs in the subfamily Peltellinae of the family Bulimulidae. ''Antidrymaeus'' was previously considered a subgenus of ''Drymaeus ''Drymaeus'' is a large genus of medium-sized, air-breathing tropical land snails, Terrestrial animal, terrestrial pulmonate gastropod Mollusca, molluscs belonging to the subfamily Peltellinae within the family Bulimulidae. It is one of the most ...'', but research published in 2023 has elevated the taxon to genus. Species Currently, these species are included in ''Antidrymaeus''. References Bulimulidae Gastropod genera Taxa described in 1907 {{Bulimulidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Argentina
Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourth-largest country in the Americas, and the List of countries and dependencies by area, eighth-largest country in the world. Argentina shares the bulk of the Southern Cone with Chile to the west, and is also bordered by Bolivia and Paraguay to the north, Brazil to the northeast, Uruguay and the South Atlantic Ocean to the east, and the Drake Passage to the south. Argentina is a Federation, federal state subdivided into twenty-three Provinces of Argentina, provinces, and one autonomous city, which is the federal capital and List of cities in Argentina by population, largest city of the nation, Buenos Aires. The provinces and the capital have their own constitutions, but exist under a Federalism, federal system. Argentina claims sovereignty ov ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazil
Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population, seventh-largest by population, with over 212 million people. The country is a federation composed of 26 Federative units of Brazil, states and a Federal District (Brazil), Federal District, which hosts the capital, Brasília. List of cities in Brazil by population, Its most populous city is São Paulo, followed by Rio de Janeiro. Brazil has the most Portuguese-speaking countries, Portuguese speakers in the world and is the only country in the Americas where Portuguese language, Portuguese is an Portuguese-speaking world, official language. Bounded by the Atlantic Ocean on the east, Brazil has a Coastline of Brazil, coastline of . Covering roughly half of South America's land area, it Borders of Brazil, borders all other countries and ter ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andes
The Andes ( ), Andes Mountains or Andean Mountain Range (; ) are the List of longest mountain chains on Earth, longest continental mountain range in the world, forming a continuous highland along the western edge of South America. The range is long and wide (widest between 18th parallel south, 18°S and 20th parallel south, 20°S latitude) and has an average height of about . The Andes extend from south to north through seven South American countries: Argentina, Chile, Bolivia, Peru, Ecuador, Colombia, and Venezuela. Along their length, the Andes are split into several ranges, separated by intermediate depression (geology), depressions. The Andes are the location of several high plateaus—some of which host major cities such as Quito, Bogotá, Cali, Arequipa, Medellín, Bucaramanga, Sucre, Mérida, Mérida, Mérida, El Alto, and La Paz. The Altiplano, Altiplano Plateau is the world's second highest after the Tibetan Plateau. These ranges are in turn grouped into three majo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amazon Basin
The Amazon basin is the part of South America drained by the Amazon River and its tributary, tributaries. The Amazon drainage basin covers an area of about , or about 35.5 percent of the South American continent. It is located in the countries of Bolivia, Brazil, Colombia, Ecuador, Guyana, Peru, Suriname, and Venezuela, as well as the territory of French Guiana. Most of the basin is covered by the Amazon rainforest, also known as Amazon rainforest, Amazonia. With a area of dense tropical forest, it is the largest rainforest in the world. Geography The Amazon River begins in the Andes, Andes Mountains at the west of the basin with its main tributary the Marañón River and Apurímac River, Apurimac River in Peru. The highest point in the Drainage divide, watershed of the Amazon is the second biggest peak of Yerupajá at . The Amazon River Basin occupies the entire central and eastern area of South America, lying to the east of the Andes mountain range and extending from th ... [...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] |
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 Cladogram#Homoplasies, homoplasy. The recurrent evolution of flight is a classic example, as flying pterygota, 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 ''homology (biology), 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 trai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phenotypic Plasticity
Phenotypic plasticity refers to some of the changes in an organism's behavior, morphology and physiology in response to a unique environment. Fundamental to the way in which organisms cope with environmental variation, phenotypic plasticity encompasses all types of environmentally induced changes (e.g. morphological, physiological, behavioural, phenological) that may or may not be permanent throughout an individual's lifespan. The term was originally used to describe developmental effects on morphological characters, but is now more broadly used to describe all phenotypic responses to environmental change, such as acclimation (acclimatization), as well as learning. The special case when differences in environment induce discrete phenotypes is termed polyphenism. Generally, phenotypic plasticity is more important for immobile organisms (e.g. plants) than mobile organisms (e.g. most animals), as mobile organisms can often move away from unfavourable environments. Nevertheless ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
