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Ctenosaura Hemilopha
''Ctenosaura hemilopha'', also known as the Cape spiny-tailed iguana or Baja California spiny-tailed iguana, is a species of ctenosaura, spinytail iguana endemic (ecology), endemic to Baja California.Grismer, L. Lee.(2002) ''Amphibians and Reptiles of Baja California, Including Its Pacific Islands and the Islands in the Sea of Cortés''. The University of California Press.409 p. It is arboreal and primarily herbivorous, although it can be an opportunistic carnivore. Males may grow up to in length, while females are smaller, with a length of up to . Five subspecies are currently recognized. The existence of mainland and insular populations of this species has been valuable in providing biologists with study and control groups comparing the evolution of island populations and their mainland counterparts. The San Esteban Island subspecies (''C.h. conspicuosa'') coexists with the giant San Esteban chuckwalla, contrary to predictions of ecological niche theory. Taxonomy and ety ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward Drinker Cope
Edward Drinker Cope (July 28, 1840 – April 12, 1897) was an American zoologist, paleontology, paleontologist, comparative anatomy, comparative anatomist, herpetology, herpetologist, and ichthyology, ichthyologist. Born to a wealthy Quaker family, he distinguished himself as a child prodigy interested in science, publishing his first scientific paper at the age of 19. Though his father tried to raise Cope as a gentleman farmer, he eventually acquiesced to his son's scientific aspirations. Cope had little formal scientific training, and he eschewed a teaching position for field work. He made regular trips to the Western United States, American West, prospecting in the 1870s and 1880s, often as a member of United States Geological Survey, U.S. Geological Survey teams. A personal feud between Cope and paleontologist Othniel Charles Marsh led to a period of intense fossil-finding competition now known as the Bone Wars. Cope's financial fortunes soured after failed mining ventures i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flower
Flowers, also known as blooms and blossoms, are the reproductive structures of flowering plants ( angiosperms). Typically, they are structured in four circular levels, called whorls, around the end of a stalk. These whorls include: calyx, modified leaves; corolla, the petals; androecium, the male reproductive unit consisting of stamens and pollen; and gynoecium, the female part, containing style and stigma, which receives the pollen at the tip of the style, and ovary, which contains the ovules. When flowers are arranged in groups, they are known collectively as inflorescences. Floral growth originates at stem tips and is controlled by MADS-box genes. In most plant species flowers are heterosporous, and so can produce sex cells of both sexes. Pollination mediates the transport of pollen to the ovules in the ovaries, to facilitate sexual reproduction. It can occur between different plants, as in cross-pollination, or between flowers on the same plant or even the same f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexual Dimorphism
Sexual dimorphism is the condition where sexes of the same species exhibit different Morphology (biology), morphological characteristics, including characteristics not directly involved in reproduction. The condition occurs in most dioecy, dioecious species, which consist of most animals and some plants. Differences may include secondary sex characteristics, size, weight, color, markings, or behavioral or cognitive traits. Male-male reproductive competition has evolved a diverse array of sexually dimorphic traits. Aggressive utility traits such as "battle" teeth and blunt heads reinforced as battering rams are used as weapons in aggressive interactions between rivals. Passive displays such as ornamental feathering or song-calling have also evolved mainly through sexual selection. These differences may be subtle or exaggerated and may be subjected to sexual selection and natural selection. The opposite of dimorphism is ''monomorphism'', when both biological sexes are phenotype, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Evolution
Evolution is the change in the heritable Phenotypic trait, characteristics of biological populations over successive generations. It occurs when evolutionary processes such as natural selection and genetic drift act on genetic variation, resulting in certain characteristics becoming more or less common within a population over successive generations. The process of evolution has given rise to biodiversity at every level of biological organisation. The scientific theory of evolution by natural selection was conceived independently by two British naturalists, Charles Darwin and Alfred Russel Wallace, in the mid-19th century as an explanation for why organisms are adapted to their physical and biological environments. The theory was first set out in detail in Darwin's book ''On the Origin of Species''. Evolution by natural selection is established by observable facts about living organisms: (1) more offspring are often produced than can possibly survive; (2) phenotypic variatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Woodpecker
Woodpeckers are part of the bird family (biology), family Picidae, which also includes the piculets, wrynecks and sapsuckers. Members of this family are found worldwide, except for Australia, New Guinea, New Zealand, Madagascar and the extreme polar regions. Most species live in forests or woodland habitats, although a few species are known that live in treeless areas, such as rocky hillsides and deserts, and the Gila woodpecker specializes in exploiting cacti. Members of this family are chiefly known for their characteristic behaviour. They mostly forage for insect prey on the trunks and branches of trees, and often communicate by drumming with their beaks, producing a reverberatory sound that can be heard at some distance. Some species vary their diet with fruits, birds' eggs, small animals, tree sap, human scraps, and carrion. They usually nest and roost in holes that they excavate in tree trunks, and their abandoned holes are of importance to other cavity-nesting birds. They ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Seri People
The Seri or ''Comcaac'' people are an Indigenous group of the Mexican state of Sonora. The majority reside on the Seri communal property (), in the towns of Punta Chueca () and El Desemboque () on the mainland coast of the Gulf of California. Tiburón Island (''Tahejöc'') and San Esteban Island (''Cofteecöl'' and sometimes ''Hast'') were also part of their traditional territory. They maintain an intimate relationship with both the sea and the land. They are one of the ethnic groups of Mexico that has most strongly maintained their language and culture throughout the years after contact with Spanish and Mexican cultures. The Seri people are not related culturally or linguistically to other groups that have lived in the area, such as the Opata, Yaqui (sg.: ''Yequim'', pl.: ''Yectz''), O'odham (sg.: ''Hapaay''), or Cochimí. The Seri language is distinct from all others in the region and is considered a language isolate. Beside the Apache (sg.: ''Hapats'', pl.: ''Hapats ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinaloa
Sinaloa (), officially the (), is one of the 31 states which, along with Mexico City, compose the Federal Entities of Mexico. It is divided into 18 municipalities, and its capital city is Culiacán Rosales. It is located in northwest Mexico and is bordered by the states of Sonora Sonora (), officially Estado Libre y Soberano de Sonora (), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. The state is divided into Municipalities of Sonora, 72 ... to the northwest, Chihuahua (state), Chihuahua to the north and Durango to the east, both across the Sierra Madre Occidental; and Nayarit to the southeast. To the west, Sinaloa faces Baja California Sur, across the Gulf of California. The state covers an area of and includes the islands of Palmito Verde, Palmito de la Virgen, Altamura, Santa María, Saliaca, Macapule, and San Ignacio. In addition to the capital city, the state's important cities inc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sonora
Sonora (), officially Estado Libre y Soberano de Sonora (), is one of the 31 states which, along with Mexico City, comprise the Administrative divisions of Mexico, Federal Entities of Mexico. The state is divided into Municipalities of Sonora, 72 municipalities; the capital (and largest) city of which is Hermosillo, located in the center of the state. Other large cities include Ciudad Obregón, Nogales, Sonora, Nogales (on the Mexico–United States border, Mexico-United States border), San Luis Río Colorado, and Navojoa. Sonora is bordered by the states of Chihuahua (state), Chihuahua to the east, Baja California to the west (of the north portion) and Sinaloa to the southeast. To the north, it shares a border with the United States, and on the southwest has a significant share of the coastline of the Gulf of California. Sonora's natural geography is divided into three parts: the Sierra Madre Occidental in the east of the state; plains and rolling hills in the center; and the co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermosillo
Hermosillo (), formerly called Pitic (as in ''Santísima Trinidad del Pitic'' and ''Presidio del Pitic''), is a city in the center of the northwestern Mexican state of Sonora. It is the municipal seat of the Hermosillo municipality, the state's capital and largest city, as well as the primary economic center for the state and the region. As of 2020, the city has a population of 936,263, making it the 18th largest city in Mexico. The recent increase in the city's population is due to expanded industrialization, especially within the automotive industry. Hermosillo was ranked as one of the five best cities to live in, in Mexico, as published in the study "The Most Livable Cities of Mexico 2013" by the Strategic Communications Cabinet of the Mexican Federal Government. Hermosillo was also ranked in 2016 as the seventh most competitive city in the country according to the Mexican Institute for Competitiveness (IMCO), based on factors such as its economic diversification, geographica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
La Paz, Baja California Sur
La Paz (, ) is the capital and largest city of the Mexico, Mexican States of Mexico, state of Baja California Sur, with a 2020 census population of 250,141 inhabitants, making it the most populous city in the state. La Paz City is located in La Paz Municipality, Baja California Sur, La Paz Municipality—the fourth-largest Municipalities of Mexico, municipality in Mexico, by area and populace (with a reported 292,241 inhabitants), covering an area of . For air travelers, La Paz is served by Manuel Márquez de León International Airport, with connecting flights to some of Mexico's main cities (Guadalajara, Mexico City, Monterrey, León, Guanajuato, Tijuana), as well as other destinations across the north-northwest of the country (including Chihuahua City, Ciudad Juárez, Ciudad Obregón, Culiacán, Hermosillo, Mazatlán and Querétaro, among others). Seasonal services to American Airlines hubs Dallas, Texas, and Phoenix, Arizona, are also provided. Additionally, two ferry servi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cerralvo Island
Isla Cerralvo (), as is commonly named, whose official name is Isla Jacques Cousteau (; ), is an island located off the Cerralvo Canal coast near La Paz, Baja California Sur, Mexico. It is long with a land area of , and is the ninth-largest island in Mexico. The island is adjacent to the towns of El Sargento and La Ventana and is part of La Paz Municipality, Baja California Sur, Municipality of La Paz. The island peak comes to and the ridge line runs north–south with many small streams draining east to Gulf of California and west to Cupalo Canal. There are many steep bluffs on the eastern sides and many sandy beaches and points on the west side. There is abundant marine life surrounding this island which are due to underwater topography and ocean currents and are the traditional fishing grounds of the local ejidos and is dotted with temporary fish camps. Virtually all local marine life must migrate past the island, and water visibility goes up to 30 meters, making it a prime ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
