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Andricus Kollari
''Andricus kollari'', also known as the marble gall wasp, is a parthenogenetic species of wasp which causes the formation of marble galls on oak trees. Synonyms for the species include ''Cynips kollari'', ''Andricus quercusgemmae'', ''A. minor'', ''A. indigenus'' and ''A. circulans''. Description Adult ''Andricus kollari'' are dark brown, and about in length. It has alternating sexual and asexual generations, each often taking two years to complete. Like all gall wasps, it causes the formation of parasitic galls on trees in which it lays its larvae. In May or June, a sexual female lays her eggs in the developing buds of susceptible oak trees using her ovipositor. Chemicals produced by both the adult and developing wasps cause the formation of a gall. Pedunculate oak (''Quercus robur''), sessile oak (''Quercus petraea'') and the hybrid ''Quercus × rosacea'' can all be parasitized. The host trees are often immature or retarded specimens; galls are rarer on older, healthier tre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Theodor Hartig
Theodor Hartig (21 February 1805 – 26 March 1880) was a German forestry biologist and botanist. Biography Hartig was born in Dillenburg. He was educated in Humboldt University of Berlin, Berlin (1824–1827), and was successively lecturer and professor of forestry at the University of Berlin (1831–1838) and at the Braunschweig University of Technology, Carolinum, Braunschweig. Hartig was the first to discover and name the sieve tube element cells (as ''Siebfasern'' - sieve fibres and ''Siebröhren'' - sieve tubes) in 1837. His List of zoologists by author abbreviation, zoologist author abbreviation is Hartig. He described many gall wasp species. In 1842, Theodor Hartig described what is now known as the Hartig net, a network of fungal hyphae that penetrate feeder roots and surround epidermal cells. The Hartig net is part of the structure of ectomycorrizae, mutualistic symbioses between fungi and plant roots. He died in Braunschweig. Works *1836 Forstliches und forstnaturw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Inquiline
In zoology, an inquiline (from Latin ''inquilinus'', "lodger" or "tenant") is an animal that lives commensally in the nest, burrow, or dwelling place of an animal of another species. For example, some organisms such as insects may live in the homes of gophers or the garages of humans and feed on debris, fungi, roots, etc. The most widely distributed types of inquiline are those found in association with the nests of social insects, especially ants and termites – a single colony may support dozens of different inquiline species. The distinctions between parasites, social parasites, and inquilines are subtle, and many species may fulfill the criteria for more than one of these, as inquilines do exhibit many of the same characteristics as parasites. However, parasites are specifically ''not'' inquilines, because by definition they have a deleterious effect on the host species, while inquilines have not been confirmed to do so. In the specific case of termites, the term "'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rose Bedeguar Gall
''Diplolepis rosae'' is a gall wasp which causes a gall known as the rose bedeguar gall, Robin's pincushion, mossy rose gall, or simply moss gall.Darlington, Arnold (1975) ''The Pocket Encyclopaedia of Plant Galls in Colour.'' Pub. Blandford Press. Poole. . P. 133 - 135. The gall develops as a chemically induced distortion of an unopened leaf axillary or terminal bud, mostly on field rose (''Rosa arvensis'') or dog rose (''Rosa canina'') shrubs. The female wasp lays up to 60 eggs within each leaf bud using her ovipositor. The grubs develop within the gall, and the wasps emerge in spring; the wasp is parthenogenetic with fewer than one percent being males. A similar gall is caused by '' Diplolepis mayri'', but this is much less common. Names Being so prominent and interesting in appearance, this gall has more folklore attached to it than most. The term 'Bedeguar, Bedegar or Bedequar' comes from a French word, ''bédégar'', and is ultimately from the Persian, ''bād-āwar'', meani ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oak Artichoke Gall
Andricus foecundatrix (formerly ''Andricus fecundator'') is a parthenogenetic gall wasp which lays a single egg within a leaf bud, using its ovipositor, to produce a gall known as an oak artichoke gall, oak hop gall, larch-cone gall or hop strobile The gall develops as a chemically induced distortion of leaf axillary or terminal buds on pedunculate oak (''Quercus robur'') or sessile oak (''Quercus petraea'') trees. The larva lives inside a smaller hard casing inside the artichoke and this is released in autumn. The asexual wasp emerges in spring and lays her eggs in the oak catkins. These develop into small oval galls which produce the sexual generation of wasps.The Virtual Filed Guide UK A yew artichoke gall caused by the fly '' Taxomyia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Knopper Gall
''Andricus quercuscalicis'' is a gall wasp species inducing knopper galls. Knopper galls develop as a chemically induced distortion of growing acorns on pedunculate oak (''Quercus robur'' L.) trees, caused by gall wasps, which lay eggs in buds with their ovipositor. The gall thus produced can greatly reduce the fecundity of the oak host, making this gall potentially more of a threat to the reproductive ability of the tree than those that develop on leaves, buds, stems, etc. The Turkey oak (''Quercus cerris'' L.), introduced into Britain in 1735, is required for the completion of the life cycle of the gall. The knopper is a recent introduction to the British Isles, first arriving in the 1960s and now found throughout England, Wales and as far north as Scotland; first occurring for example in 2007 at Eglinton Country Park in North Ayrshire. The physical appearance of the gall The large 2 cm gall growth appears as a mass of green to yellowish-green, ridged, and at first stick ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cola-nut Gall
Cola-nut gallsDarlington, Arnold (1975) ''The Pocket Encyclopaedia of Plant Galls in Colour.'' Pub. Blandford Press. Poole. . P. 155. develop as a chemically induced distortion of leaf axillary or terminal buds on pedunculate oak (''Quercus robur'') or sessile oak (''Quercus petraea'') trees, caused by the agamic gall wasp ''Andricus lignicola'' ( Hartig, 1840) which lays single eggs within leaf buds using their ovipositor. A previous name or synonym for the species ''A. lignicola'' is ''A. lignicolus'' and ''A. venheurni''. The physical appearance of the galls The galls are found in small groups, which however do not coalesce, helping to prevent mis-identification with the oak marble gall (''Andricus kollari''), in addition the shape is ovoid rather than spherical and it is scaly rather than smooth. It grows up to about 10 x 8 mm and is at first green, rapidly changing to grey-brown, with light red patches where the original bud scales have separated. It is hard and firm, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andricus Grossulariae
''Andricus grossulariae'' is a gall wasp species inducing agamic acorn cup galls on oak tree acorn cups and sexual phase galls on catkins. Synonyms include ''Andricus fructuum'' (Trotter, 1899), ''Andricus gemellus'' (Belizin & Maisuradze, 1961), ''Andricus intermedius'' (Tavares, 1922), ''Andricus mayri'' (Wachtl, 1879) and ''Cynips panteli'' (Kieffer, 1897). Galls Acorn cup galls develop as a chemically induced distortion of the growing acorn cups on oak trees, caused by gall wasps which lay eggs within the tissues of the acorn cup. The sexual phase appears on catkins as rounded structures (6 mm × 3–4 mm) possessing a characteristic point, and when young are covered with fine hairs. The galls, shiny and hard, turn red in colour and then black or dark purple. The asexual or parthenogenetic phase, about 10 mm across, develops on acorn cups of English oak ''Q. robur'' and sessile oak ''Q. petraea''. The galls, formed of flattened projections, often enclose the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pannage
Pannage (also referred to as ''Eichelmast'' or ''Eckerich'' in Germany, Switzerland, Liechtenstein, Luxembourg, Austria, Slovenia and Croatia) is the practice of releasing livestock-domestic pig, pigs in a forest, so that they can feed on fallen acorns, beechmast, Sweet Chestnut, chestnuts or other Nut (fruit), nuts. Historically, it was a right or privilege granted to local people on common land or in royal forests.H. R. Loyn, ''Anglo-Saxon England and the Norman Conquest'', 2nd ed. 1991:369. Pannage had two very useful purposes in Middle Ages, Medieval times: in Domestic pig#Rooting, rooting around looking for nuts, they also turned the soil and broke it. Pig-rooting prevented soil compaction and released nutrients for plant growth. It was also fattened pigs for slaughter. Especially in the eastern shires of England, pannage was so prominent a value in the economic importance of woodland that it was often employed, as in ''Domesday Book'' (1086), as a measurement. Customarily ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hemorrhoid
Hemorrhoids (or haemorrhoids), also known as piles, are vascular structures in the anal canal. In their normal state, they are cushions that help with stool control. They become a disease when swollen or inflamed; the unqualified term ''hemorrhoid'' is often used to refer to the disease. The signs and symptoms of hemorrhoids depend on the type present. Internal hemorrhoids often result in painless, bright red rectal bleeding when defecating. External hemorrhoids often result in pain and swelling in the area of the anus. If bleeding occurs, it is usually darker. Symptoms frequently get better after a few days. A skin tag may remain after the healing of an external hemorrhoid. While the exact cause of hemorrhoids remains unknown, a number of factors that increase pressure in the abdomen are believed to be involved. This may include constipation, diarrhea, and sitting on the toilet for long periods. Hemorrhoids are also more common during pregnancy. Diagnosis is made by lookin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gospel Of Judas
The Gospel of Judas is a non-canonical Gnostic gospel. The content consists of conversations between Jesus and Judas Iscariot. Given that it includes late 2nd-century theology, it is widely thought to have been composed in the 2nd century (prior to 180 AD) by Gnostic Christians, rather than the historic Judas himself. The only copy of it known to exist is a Coptic language text that has been carbon dated to 280 AD, plus or minus 60 years. It has been suggested that the text derives from an earlier manuscript in the Greek language An English translation was first published in early 2006 by the National Geographic Society. Significance In contrast to the canonical gospels, which paint Judas as a betrayer who delivered Jesus to the authorities for crucifixion in exchange for money, the Gospel of Judas portrays Judas's actions as done in obedience to instructions given to him by Jesus. It asserts that the other disciples had not learned the true Gospel, which Jesus taught only to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dead Sea Scrolls
The Dead Sea Scrolls (also the Qumran Caves Scrolls) are ancient Jewish and Hebrew religious manuscripts discovered between 1946 and 1956 at the Qumran Caves in what was then Mandatory Palestine, near Ein Feshkha in the West Bank, on the northern shore of the Dead Sea. Dating from the 3rd century BCE to the 1st century CE, the Dead Sea Scrolls are considered to be a keystone in the history of archaeology with great historical, religious, and linguistic significance because they include the oldest surviving manuscripts of entire books later included in the biblical canons, along with deuterocanonical and extra-biblical manuscripts which preserve evidence of the diversity of religious thought in late Second Temple Judaism. At the same time they cast new light on the emergence of Christianity and of Rabbinic Judaism. Most of the scrolls are held by Israel in the Shrine of the Book at the Israel Museum, but their ownership is disputed by Jordan due to the Qumran Caves' history: f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron Gall Ink
Iron gall ink (also known as common ink, standard ink, oak gall ink or iron gall nut ink) is a purple-black or brown-black ink made from iron salts and tannic acids from vegetable sources. It was the standard ink formulation used in Europe for the 1400-year period between the 5th and 19th centuries, remained in widespread use well into the 20th century, and is still sold today. Preparation and use The ink was traditionally prepared by adding some iron(II) sulfate ( Fe S O4) to a solution of tannic acid, but any iron ion donor can be used. The gallotannic acid was usually extracted from oak galls or galls of other trees, hence the name. Fermentation or hydrolysis of the extract releases glucose and gallic acid, which yields a darker purple-black ink, due to the formation of iron gallate. The fermented extract was combined with the iron(II) sulfate. After filtering, the resulting pale-grey solution had a binder added to it (most commonly gum arabic) and was used to write on pap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
