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Philaenus Spumarius
''Philaenus spumarius'', the meadow froghopper or meadow spittlebug, is a species of insect belonging to the spittlebug family Aphrophoridae. In Italy and America, it is economically important as one of the vectors of Pierce's Disease (''Xylella fastidiosa''). Etymology The genus name ''Philaenus'' comes from the Greek ''philein'' ("love"), while the species name ''spumarius'' is from the Latin ''spuma'' ("sparkling"), referring to the foam nests; the binomial ''Philaenus spumarius'' can be translated as "foam lover." Varietas Varietas within this species include: *''Philaenus spumarius var. populellus'' *''Philaenus spumarius var. vittatus'' *''Philaenus spumarius var. lateralis'' *''Philaenus spumarius var. fasciatus'' *''Philaenus spumarius var. gibbus'' Distribution ''Philaenus spumarius'' is quite common and widespread. The species' original distribution was restricted to the Palearctic realm. They are present in most of Europe, in North Africa, in part of Russia, in A ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philaenus Spumarius - 2014-08-06
''Philaenus'' is a genus of insects belonging to the family Aphrophoridae, the spittlebugs. The meadow spittlebug ''Philaenus spumarius'' is a common insect in much of the Northern Hemisphere, and it is sometimes a pest on crops such as alfalfa. It is important to science because its entire genome has been sequenced. It has also been the subject of many studies of genetic diversity because it displays marked color polymorphism. There are sixteen color phenotypes, with individuals taking various dark, pale, mottled, and striped patterns. Most other ''Philaenus'' species are also color polymorphic. Many species are polyphagous, feeding on a number of plants. Some species specialize on one host plant, the common asphodel (''Asphodelus aestivus'').Maryańska-Nadachowska, A., et al. (2013)Chromosomal location of rDNA clusters and TTAGG telomeric repeats in eight species of the spittlebug genus ''Philaenus'' (Hemiptera: Auchenorrhyncha: Aphrophoridae).''European Journal of Entomology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philaenus
''Philaenus'' is a genus of insects belonging to the family Aphrophoridae, the spittlebugs. The meadow spittlebug '' Philaenus spumarius'' is a common insect in much of the Northern Hemisphere, and it is sometimes a pest on crops such as alfalfa. It is important to science because its entire genome has been sequenced. It has also been the subject of many studies of genetic diversity because it displays marked color polymorphism. There are sixteen color phenotype In genetics, the phenotype () is the set of observable characteristics or traits of an organism. The term covers the organism's morphology or physical form and structure, its developmental processes, its biochemical and physiological proper ...s, with individuals taking various dark, pale, mottled, and striped patterns. Most other ''Philaenus'' species are also color polymorphic. Many species are polyphagous, feeding on a number of plants. Some species specialize on one host plant, the common asphodel (''Asphod ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Europe
Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia and it is located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. Comprising the westernmost peninsulas of Eurasia, it shares the continental landmass of Afro-Eurasia with both Africa and Asia. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south and Asia to the east. Europe is commonly considered to be Boundaries between the continents of Earth#Asia and Europe, separated from Asia by the drainage divide, watershed of the Ural Mountains, the Ural (river), Ural River, the Caspian Sea, the Greater Caucasus, the Black Sea and the waterways of the Turkish Straits. "Europe" (pp. 68–69); "Asia" (pp. 90–91): "A commonly accepted division between Asia and E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genista
Genista is a genus of flowering plants in the legume family Fabaceae, native to open habitats such as moorland and pasture in Europe and western Asia. They include species commonly called broom, though the term may also refer to other genera, including ''Cytisus'' and ''Chamaecytisus''. Brooms in other genera are sometimes considered synonymous with ''Genista'': ''Echinospartum'', ''Retama'', ''Spartium'', ''Stauracanthus'', and ''Ulex''. Description They are mainly deciduous shrubs and trees, often with brush-like foliage, often spiny to deter grazing, and masses of small, pea-like yellow blooms which are sometimes fragrant. Many of the species have flowers that open explosively when alighted on by an insect, the style flying through the upper seam of the keel and striking the underside of the insect, followed by a shower of pollen that coats the insect. The name of the Plantagenet royal line, which reigned in England from 1154 to 1485, is derived from this genus, being a dia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cardamine Pratensis
''Cardamine pratensis'', the cuckoo flower, lady's smock, mayflower, or milkmaids, is a flowering plant in the family Brassicaceae. It is a perennial herb native throughout most of Europe and Western Asia. The specific name ''pratensis'' is Latin for "meadow". Description ''Cardamine pratensis'' is a herbaceous, hairless,Webb, D.A., Parnell, J. and Doogue, D. ''An Irish Flora'' 1996. Dundalgan Press, Dundalk. perennial plant growing to 40–60 cm tall, with pinnate leaves 5–12 cm long with 3–15 leaflets, each leaflet about 1 cm long. The flowers are produced on a spike 10–30 cm long, each flower 1–2 cm in diameter with four very pale violet-pink (rarely white) petals. The style of the fruit is short or longish. It grows best close to water. Etymology Its common name ''cuckoo flower'' derives from the formation of the plant's flowers at around the same time as the arrival each spring of the first cuckoos in the British Isles. An alternative 16th c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Instar
An instar (, from the Latin '' īnstar'', "form", "likeness") is a developmental stage of arthropods, such as insects, between each moult (''ecdysis''), until sexual maturity is reached. Arthropods must shed the exoskeleton in order to grow or assume a new form. Differences between instars can often be seen in altered body proportions, colors, patterns, changes in the number of body segments or head width. After shedding their exoskeleton (moulting), the juvenile arthropods continue in their life cycle until they either pupate or moult again. The instar period of growth is fixed; however, in some insects, like the salvinia stem-borer moth, the number of instars depends on early larval nutrition. Some arthropods can continue to moult after sexual maturity, but the stages between these subsequent moults are generally not called instars. For most insect species, an ''instar'' is the developmental stage of the larval forms of holometabolous (complete metamorphism) or nymphal forms o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Temperate Climate
In geography, the temperate climates of Earth occur in the middle latitudes (23.5° to 66.5° N/S of Equator), which span between the tropics and the polar regions of Earth. These zones generally have wider temperature ranges throughout the year and more distinct seasonal changes compared to tropical climates, where such variations are often small and usually only have precipitation changes. In temperate climates, not only do latitudinal positions influence temperature changes, but sea currents, prevailing wind direction, continentality (how large a landmass is) and altitude also shape temperate climates. The Köppen climate classification defines a climate as "temperate" C, when the mean temperature is above but below in the coldest month to account for the persistency of frost. However, other climate classifications set the minimum at . Zones and climates The north temperate zone extends from the Tropic of Cancer (approximately 23.5° north latitude) to the Arctic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phenology
Phenology is the study of periodic events in biological life cycles and how these are influenced by seasonality, seasonal and interannual variations in climate, as well as environmental factor, habitat factors (such as elevation). Examples include the date of emergence of leaves and flowers, the first flight of butterflies, the first appearance of bird migration, migratory birds, the date of leaf colouring and fall in deciduous trees, the dates of egg-laying of birds and amphibia, or the timing of the developmental cycles of temperate-zone honey bee colonies. In the scientific literature on ecology, the term is used more generally to indicate the time frame for any seasonal biological phenomena, including the dates of last appearance (e.g., the seasonal phenology of a species may be from April through September). Because many such phenomena are very sensitive to small variations in climate, especially to temperature, phenological records can be a useful proxy (climate), proxy for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sclerotin
Sclerotin is a component of the Arthropod cuticle, cuticle of various Arthropoda, most familiarly insects. It is formed by Cross-link, cross-linking members of particular classes of protein molecules, a biochemical process called sclerotization, a form of Tanning (leather), tanning in which quinones are enzymatically introduced into the cuticle, and react with terminal and lysine-related amino groups in the proteins to form strong links between the molecules.Chapman, R.F. (1969) ''The Insects: Structure and Function''. Elsevier, New York. Chapter 22.37 - "Expansion of the new cuticle is brought to an end by the onset of tanning" The resulting material increases the rigidity of an insect's chitinous exoskeleton. It is particularly prominent in the thicker, armoured parts of insect and arachnid integument, such as in the biting mouthparts and sclerites of scorpions and beetles. As it matures, freshly formed sclerotin becomes a hard, horn-like substance with a range of yellow-brown co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Polymorphism (biology)
In biology, polymorphism is the occurrence of two or more clearly different morphs or forms, also referred to as alternative ''phenotypes'', in the population of a species. To be classified as such, morphs must occupy the same habitat at the same time and belong to a panmictic population (one with random mating). Ford E.B. 1965. ''Genetic polymorphism''. Faber & Faber, London. Put simply, polymorphism is when there are two or more possibilities of a trait on a gene. For example, there is more than one possible trait in terms of a jaguar's skin colouring; they can be light morph or dark morph. Due to having more than one possible variation for this gene, it is termed 'polymorphism'. However, if the jaguar has only one possible trait for that gene, it would be termed "monomorphic". For example, if there was only one possible skin colour that a jaguar could have, it would be termed monomorphic. The term polyphenism can be used to clarify that the different forms arise from the s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North America
North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Caribbean Sea, and to the west and south by the Pacific Ocean. Because it is on the North American Plate, North American Tectonic Plate, Greenland is included as a part of North America geographically. North America covers an area of about , about 16.5% of Earth's land area and about 4.8% of its total surface. North America is the third-largest continent by area, following Asia and Africa, and the list of continents and continental subregions by population, fourth by population after Asia, Africa, and Europe. In 2013, its population was estimated at nearly 579 million people in List of sovereign states and dependent territories in North America, 23 independent states, or about 7.5% of the world's population. In Americas (terminology)#Human ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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