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Banana Pipistrelle
The banana serotine (''Afronycteris nanus''), formerly known as the banana pipistrelle, is a species of vesper bat found throughout much of Africa. It was previously known as ''Pipistrellus nanus'', but genetic analysis later reclassified it in ''Neoromicia''. However, more recent phylogenetic evidence indicates that it and Heller's serotine (''A. helios'') comprise the distinct genus ''Afronycteris''. Description Banana serotines are unusually small bats, with a total length of about , about half of which consists of the tail. Adults weigh only , although females are slightly larger than males. The fur is dark with golden or reddish brown tips, fading to greyish or near-white tips on the fur of the underparts. The wings are brown, sometimes with a narrow white border on the hind margin. The ears are triangular with a tragus (ear), tragus that has been described as "hatchet-shaped". The thumbs of banana serotines bear an unusual pad composed of ridged hairy skin with multiple se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wilhelm Peters
Wilhelm Karl Hartwich (or Hartwig) Peters (22 April 1815 in Koldenbüttel – 20 April 1883) was a German natural history, naturalist and explorer. He was assistant to the anatomist Johannes Peter Müller and later became curator of the Natural History Museum, Berlin, Berlin Zoological Museum. Encouraged by Müller and the explorer Alexander von Humboldt, Peters travelled to Mozambique via Angola in September 1842, exploring the coastal region and the Zambesi River. He returned to Berlin with an enormous collection of natural history specimens, which he then described in ''Naturwissenschaftliche Reise nach Mossambique... in den Jahren 1842 bis 1848 ausgeführt'' (1852–1882). The work was comprehensive in its coverage, dealing with mammals, birds, reptiles, amphibians, river fish, insects and botany. He replaced Martin Lichtenstein as curator of the museum in 1858, and in the same year he was elected a foreign member of the Royal Swedish Academy of Sciences. In a few years, he g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angola
, national_anthem = " Angola Avante"() , image_map = , map_caption = , capital = Luanda , religion = , religion_year = 2020 , religion_ref = , coordinates = , largest_city = capital , official_languages = Portuguese , languages2_type = National languages , languages2 = , ethnic_groups = , ethnic_groups_ref = , ethnic_groups_year = 2000 , demonym = , government_type = Unitary dominant-party presidential republic , leader_title1 = President , leader_name1 = João Lourenço , leader_title2 = Vice President , leader_name2 = Esperança da CostaInvestidura do Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxonomy Articles Created By Polbot
Taxonomy is the practice and science of categorization or classification (general theory), classification. A taxonomy (or taxonomical classification) is a scheme of classification, especially a hierarchical classification, in which things are organized into groups or types. Among other things, a taxonomy can be used to organize and index knowledge (stored as documents, articles, videos, etc.), such as in the form of a library classification system, or a Taxonomy for search engines, search engine taxonomy, so that users can more easily find the information they are searching for. Many taxonomies are hierarchy, hierarchies (and thus, have an intrinsic tree structure), but not all are. Originally, taxonomy referred only to the categorisation of organisms or a particular categorisation of organisms. In a wider, more general sense, it may refer to a categorisation of things or concepts, as well as to the principles underlying such a categorisation. Taxonomy organizes taxonomic uni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Female Sperm Storage
Female sperm storage is a biological process and often a type of sexual selection in which sperm cells transferred to a female during mating are temporarily retained within a specific part of the reproductive tract before the oocyte, or egg, is fertilized. The site of storage is variable among different animal taxa and ranges from structures that appear to function solely for sperm retention, such as insect spermatheca and bird sperm storage tubules (bird anatomy), to more general regions of the reproductive tract enriched with receptors to which sperm associate before fertilization, such as the caudal portion of the cow oviduct containing sperm-associating annexins. Female sperm storage is an integral stage in the reproductive process for many animals with internal fertilization. It has several documented biological functions including: * Supporting the sperm by: a.) enabling sperm to undergo biochemical transitions, called capacitation and motility hyperactivation, in which they ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frequency Modulated
Frequency modulation (FM) is the encoding of information in a carrier wave by varying the instantaneous frequency of the wave. The technology is used in telecommunications, radio broadcasting, signal processing, and computing. In analog frequency modulation, such as radio broadcasting, of an audio signal representing voice or music, the instantaneous frequency deviation, i.e. the difference between the frequency of the carrier and its center frequency, has a functional relation to the modulating signal amplitude. Digital data can be encoded and transmitted with a type of frequency modulation known as frequency-shift keying (FSK), in which the instantaneous frequency of the carrier is shifted among a set of frequencies. The frequencies may represent digits, such as '0' and '1'. FSK is widely used in computer modems, such as fax modems, telephone caller ID systems, garage door openers, and other low-frequency transmissions. Radioteletype also uses FSK. Frequency modulation is wi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biosonar
Echolocation, also called bio sonar, is a biological sonar used by several animal species. Echolocating animals emit calls out to the environment and listen to the echoes of those calls that return from various objects near them. They use these echoes to locate and identify the objects. Echolocation is used for navigation, foraging, and hunting in various environments. Echolocating animals include some mammals (most notably Laurasiatheria) and a few birds, especially some bat species and odontocetes (toothed whales and dolphins), but also in simpler forms in other groups such as shrews, and two cave-dwelling bird groups, the so-called cave swiftlets in the genus ''Aerodramus'' (formerly ''Collocalia'') and the unrelated oilbird ''Steatornis caripensis''. Early research The term ''echolocation'' was coined in 1938 by the American zoologist Donald Griffin, who, with Robert Galambos, first demonstrated the phenomenon in bats. As Griffin described in his book, the 18th century I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Torpor
Torpor is a state of decreased physiological activity in an animal, usually marked by a reduced body temperature and metabolic rate. Torpor enables animals to survive periods of reduced food availability. The term "torpor" can refer to the time a hibernator spends at low body temperature, lasting days to weeks, or it can refer to a period of low body temperature and metabolism lasting less than 24 hours, as in "daily torpor". Animals that undergo daily torpor include birds (even tiny hummingbirds, notably Cypselomorphae) and some mammals, including many marsupial species, rodent species (such as mice), and bats. During the active part of their day, such animals maintain normal body temperature and activity levels, but their metabolic rate and body temperature drop during a portion of the day (usually night) to conserve energy. Some animals seasonally go into long periods of inactivity, with reduced body temperature and metabolism, made up of multiple bouts of torpor. This is kno ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Uapaca Kirkiana
''Uapaca kirkiana'', the sugar plum or mahobohobo, is a species of dioecious plant in the family Phyllanthaceae. It is native to the southern Afrotropics, where it occurs in well-watered miombo woodlands. Within range it is one of the most popular wild fruits. It is rarely cultivated but trees are left when land is being cleared. Still a traditional food plant in Africa, this little-known fruit has the potential to improve nutrition, boost food security, foster rural development and support sustainable land care. In Shona, the fruit are referred to as ''mazhanje'', and in Chichewa ''masuku''. Range It occurs in the miombo woodlands of Angola, the DRCongo, Zambia, southern Burundi, Tanzania, Malawi, central and northern Mozambique, and Zimbabwe Zimbabwe (), officially the Republic of Zimbabwe, is a landlocked country located in Southeast Africa, between the Zambezi and Limpopo Rivers, bordered by South Africa to the south, Botswana to the south-west, Zambia to th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Strelitzia Nicolai
''Strelitzia nicolai'', commonly known as the wild banana or giant white bird of paradise, is a species of banana-like plants with erect woody stems reaching a height of , and the clumps formed can spread as far as . The -long leaves are grey-green and arranged like a fan at the top of the stems, similar to '' Ravenala madagascariensis''. The inflorescence is composed of a dark blue bract, white sepals and a bluish-purple "tongue". The entire flower can be as much as high by long, and is typically held just above the point where the leaf fan emerges from the stem. Flowers are followed by triangular seed capsules. ''Strelitzia nicolai'' is among the few plants which have been verified to contain the pigment bilirubin, which is usually found in animals. Distribution ''Strelitzia nicolai'' is one of three larger ''Strelitzia'' species, the other two being tree-like '' S. caudata'' and '' S. alba''. ''S. nicolai'' is restricted to evergreen coastal forest and thicket of eastern S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Musa (genus)
''Musa'' is one of two or three genera in the family Musaceae. The genus includes flowering plants producing edible bananas and plantains. Around 70 species of ''Musa'' are known, with a broad variety of uses. Though they grow as high as trees, banana and plantain plants are not woody and their apparent " stem" is made up of the bases of the huge leaf stalks. Thus, they are technically gigantic herbaceous plants. ''Musa'' species are used as food plants by the larvae of some Lepidoptera species, including the giant leopard moth and other ''Hypercompe'' species, including '' H. albescens'' (only recorded on ''Musa''), '' H. eridanus'', and '' H. icasia''. Description Banana plants represent some of the largest herbaceous plants existing in the present, with some reaching up to in height (59 feet (18 meters) in the case of '' Musa ingens''). The large herb is composed of a modified underground stem (rhizome), a false trunk of tightly rolled petioles, a netw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Banana
A banana is an elongated, edible fruit – botanically a berry – produced by several kinds of large herbaceous flowering plants in the genus ''Musa''. In some countries, bananas used for cooking may be called "plantains", distinguishing them from dessert bananas. The fruit is variable in size, color, and firmness, but is usually elongated and curved, with soft flesh rich in starch covered with a rind, which may be green, yellow, red, purple, or brown when ripe. The fruits grow upward in clusters near the top of the plant. Almost all modern edible seedless ( parthenocarp) bananas come from two wild species – ''Musa acuminata'' and ''Musa balbisiana''. The scientific names of most cultivated bananas are ''Musa acuminata'', ''Musa balbisiana'', and ''Musa'' × ''paradisiaca'' for the hybrid ''Musa acuminata'' × ''M. balbisiana'', depending on their genomic constitution. The old scientific name for this hybrid, ''Musa sapientum'', is no longer used. ''Musa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sierra Leone
Sierra Leone,)]. officially the Republic of Sierra Leone, is a country on the southwest coast of West Africa. It is bordered by Liberia to the southeast and Guinea surrounds the northern half of the nation. Covering a total area of , Sierra Leone has a tropical climate, with diverse environments ranging from savanna to rainforests. The country has a population of 7,092,113 as of the 2015 census. The capital and largest city is Freetown. The country is divided into five administrative regions, which are subdivided into Districts of Sierra Leone, 16 districts. Sierra Leone is a constitutional republic with a unicameral parliament and a directly elected executive president, president serving a five-year term with a maximum of two terms. The current president is Julius Maada Bio. Sierra Leone is a Secular state, secular nation with Constitution of Sierra Leone, the constitution providing for the separation of state and religion and freedom of conscience (which includes freedom of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
