|
Apis Mellifera Capensis
The Cape honey bee or Cape bee (''Apis mellifera capensis'') is a southern South African subspecies of the western honey bee. They play a major role in South African agriculture and the economy of the Western Cape by pollinating crops and producing honey in the Western Cape region of South Africa. The Cape honey bee is unique among honey bee subspecies because workers can lay diploid, female eggs, by means of thelytoky, while workers of other subspecies (and, in fact, unmated females of virtually all other eusocial insects) can only lay haploid, male eggs. Not all workers are capable of thelytoky – only those expressing the thelytoky phenotype, which is controlled by a recessive allele at a single locus (workers must be homozygous at this locus to be able to reproduce by thelytoky). The bee tends to be darker in colour than the African honey bee (African bee, ''A.m. scutellata''). Other differences that might allow for differentiation of the subspecies from African honey ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxalis Pes-caprae
''Oxalis pes-caprae'' (African wood-sorrel, Bermuda buttercup, Bermuda sorrel, buttercup oxalis, Cape sorrel, English weed, goat's-foot, sourgrass, soursob or soursop; ) is a species of heterostyly, tristylous yellow-flowering plant in the wood sorrel family Oxalidaceae. ''Oxalis cernua'' is a less common synonym for this species. Some of the most common names for the plant reference its sour taste owing to oxalic acid present in its tissues. Indigenous to South Africa, the plant has become a pest plant in different parts of the world that is difficult to eradicate because of how it propagates through underground bulbs. Name ''Oxalis pes-caprae'' is often called by the common name sourgrass, ''sour''grass due to its moderately Sour, sour flavor. This sourness is caused by an exceptionally high content of oxalic acid. The specific epithet ''pes-caprae'' means 'goat's-foot', possibly in reference to the shape of the leaf. Description The ''Oxalis pes-caprae'' flower is floral ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of Theoretical Biology
The ''Journal of Theoretical Biology'' is a biweekly peer-reviewed scientific journal covering theoretical biology, as well as mathematical, computational, and statistical aspects of biology. Some research areas covered by the journal include cell biology, evolutionary biology, population genetics, morphogenesis, and immunology. The journal was established in 1961. Its founding editor-in-chief was English biologist James F. Danielli, who remained editor until his death in 1984. The journal is published by Elsevier and, , the editors-in-chief are Denise Kirschner (University of Michigan Medical School), Mark Chaplain (University of St. Andrews), and Akira Sawaki (Aichi Cancer Center, Nagoya). Lewis Wolpert served as editor-in-chief for more than 55 years. According to the ''Journal Citation Reports'' the journal has a 2020 impact factor of 2.691. Notable articles The following are the most highly cited articles (more than 2000 citations at April 2021) that have been published in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Parthenogenesis
Parthenogenesis (; from the Greek grc, παρθένος, translit=parthénos, lit=virgin, label=none + grc, γένεσις, translit=génesis, lit=creation, label=none) is a natural form of asexual reproduction in which growth and development of embryos occur in a gamete (egg or sperm) without combining with another gamete (e.g., egg and sperm fusing). In animals, parthenogenesis means development of an embryo from an unfertilized Gametophyte, egg cell. In plants, parthenogenesis is a component process of apomixis. In algae, parthenogenesis can mean the development of an embryo from either an individual sperm or an individual egg. Parthenogenesis occurs naturally in some plants, algae, invertebrate animal species (including nematodes, some tardigrades, water fleas, some scorpions, aphids, some mites, some bees, some Phasmatodea and parasitic wasps) and a few vertebrates (such as some fish, amphibians, reptiles and birds). This type of reproduction has been induced artificially ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Fusion And Terminal Fusion Automixis
Central is an adjective usually referring to being in the center of some place or (mathematical) object. Central may also refer to: Directions and generalised locations * Central Africa, a region in the centre of Africa continent, also known as Middle Africa * Central America, a region in the centre of America continent * Central Asia, a region in the centre of Eurasian continent * Central Australia, a region of the Australian continent * Central Belt, an area in the centre of Scotland * Central Europe, a region of the European continent * Central London, the centre of London * Central Region (other) * Central United States, a region of the United States of America Specific locations Countries * Central African Republic, a country in Africa States and provinces * Blue Nile (state) or Central, a state in Sudan * Central Department, Paraguay * Central Province (Kenya) * Central Province (Papua New Guinea) * Central Province (Solomon Islands) * Central Province, Sri Lank ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Honeybee Heroes
Honeybee Heroes in a honeybee sanctuary and beekeeper education non-profit organisation founded in 2020 by Chris Oosthuizen in the Overberg region of South Africa. Honeybee Heroes seeks to increase population numbers of the endemic Capensis honeybee subspecies (Apis mellifera capensis), which is increasingly at risk due to a number of factors including monocropping, pesticide use, beekeeper malpractice, habitat loss, and climate change. Secondary activities of the organisation include educating South African consumers on honey adulteration and encouraging them to purchase from local producers. Working with local farmers to create more environmentally friendly cultivation techniques, including the planting of pollinator-friendly cover crops, and other general honeybee welfare advocacy activities. Through Honeybee Heroes' Adopt-a-Hive program, individuals in South Africa or overseas, sponsor beehives, which are then placed on the Honeybee Heroes farm in Stanford Valley (Western ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Constantia, Cape Town
Constantia is an affluent suburb of Cape Town, South Africa, situated about 15 kilometres south of the centre of Cape Town. It is considered to be one of the most prestigious suburbs in South Africa. The Constantia Valley lies to the east of and at the foot of the Constantiaberg mountain. Constantia Nek is a low pass linking to Hout Bay in the west. Constantia is a beautiful family orientated place for families to grow, with the leafy canopies of trees and top schools. History Constantia is one of the oldest townships of Cape Town and is famed for its wine. The estate of Groot Constantia (Great Constantia) was established in 1685 by the Dutch Colonial Governor of Cape Town, Simon van der Stel. Other notable wine farms in the area include the oldest estate, Steenberg (Mountain of Stone), established in 1682, Buitenverwachting (Beyond Expectations), Klein Constantia (Small Constantia) and Constantia Uitsig (View of Constantia). Before the twentieth century, the region was noted for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pesticide
Pesticides are substances that are meant to control pests. This includes herbicide, insecticide, nematicide, molluscicide, piscicide, avicide, rodenticide, bactericide, insect repellent, animal repellent, microbicide, fungicide, and lampricide. The most common of these are herbicides which account for approximately 80% of all pesticide use. Most pesticides are intended to serve as plant protection products (also known as crop protection products), which in general, protect plants from weeds, fungi, or insects. As an example, the fungus ''Alternaria solani'' is used to combat the aquatic weed ''Salvinia''. In general, a pesticide is a chemical (such as carbamate) or biological agent (such as a virus, bacterium, or fungus) that deters, incapacitates, kills, or otherwise discourages pests. Target pests can include insects, plant pathogens, weeds, molluscs, birds, mammals, fish, nematodes (roundworms), and microbes that destroy property, cause nuisance, or spread disease, or a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borage
Borage ( or ; ''Borago officinalis''), also known as starflower, is an annual herb in the flowering plant family Boraginaceae. It is native to the Mediterranean region, and has naturalized in many other locales. It grows satisfactorily in gardens in most of Europe, such as Denmark, France, Germany, and the United Kingdom, remaining in the garden from year to year by self-seeding. The leaves are edible and the plant is grown in gardens for that purpose in some parts of Europe. The plant is also commercially cultivated for borage seed oil extracted from its seeds. The plant contains pyrrolizidine alkaloids, some of which are hepatotoxic, mutagenic, and carcinogenic (see below under Phytochemistry). Description ''B. officinalis'' grows to a height of , and is bristly or hairy all over the stems and leaf, leaves; the leaves are Alternate leaf, alternate, Simple leaf, simple, and long. The flowers are Complete flower, complete, Perfect flower, perfect with five narrow, trian ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
American Foulbrood
American foulbrood (AFB, ''Histolysis infectiosa perniciosa larvae apium'', ''Pestis americana larvae apium''), caused by the spore-forming bacterium ''Paenibacillus larvae'' (reclassified as one species without subspecies differentiation in 2006 from ''Paenibacillus larvae'' ssp. ''larvae,'' formerly classified as ''Bacillus larvae'', and ''Paenibacillus larvae'' ssp. ''pulvifaciens''), is a highly infectious honey bee brood disease. It is the most widespread and destructive of the honey bee brood diseases. It is globally distributed and burning of infected colonies is often considered as the only effective measure to prevent spreading of the disease. Characteristics ''Paenibacillus larvae'' is a rod-shaped bacterium, which is visible only under a high power microscope. Larvae up to 3 days old become infected by ingesting spores that are present in their food. Young larvae less than 24 hours old are most susceptible to infection. Spores germinate in the gut of the larva and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Honeybee Death
A cape is a clothing accessory or a sleeveless outer garment which drapes the wearer's back, arms, and chest, and connects at the neck. History Capes were common in medieval Europe, especially when combined with a hood in the chaperon. They have had periodic returns to fashion - for example, in nineteenth-century Europe. Roman Catholic clergy wear a type of cape known as a ferraiolo, which is worn for formal events outside a ritualistic context. The cope is a liturgical vestment in the form of a cape. Capes are often highly decorated with elaborate embroidery. Capes remain in regular use as rainwear in various military units and police forces, in France for example. A gas cape was a voluminous military garment designed to give rain protection to someone wearing the bulky gas masks used in twentieth-century wars. Rich noblemen and elite warriors of the Aztec Empire would wear a tilmàtli; a Mesoamerican cloak/cape used as a symbol of their upper status. Cloth and clothing wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
African Penguin
The African penguin (''Spheniscus demersus''), also known as Cape penguin or South African penguin, is a species of penguin confined to southern African waters. Like all extant penguins, it is flightless, with a streamlined body and wings stiffened and flattened into flippers for a marine habitat. Adults weigh an average of and are tall. The species has distinctive pink patches of skin above the eyes and a black facial mask. The body's upper parts are black and sharply delineated from the white underparts, which are spotted and marked with a black band. The African penguin is a pursuit diver and feeds primarily on fish and squid. Once extremely numerous, the African penguin is declining rapidly due to a combination of several threats and is classified as endangered. It is a charismatic species and is popular with tourists. Other vernacular names of the species include black-footed penguin and jackass penguin, due to the species' loud, donkey-like noise, although several rel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
