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Keyword: Fact |
Overview - a b c d e f g h i j k l m n o p q r s t u v w x y z |
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| When Brachycera occur in large masses they can be very annoying and can, in certain cases, lead to significant damage to agriculture, especially in the meat and milk production industry. Due to the fact that some species of Brachycera t very often reside in feces and carcasses, they can transfer diseases. Some general examples of Brachycera are : Blow-flies, house flies and Muscidae.
The Drosophilidae, or fruit flies, of which about 3,000 spec... | | |
| | Royal jelly | | ...tamins and trace elements.
The production of royal jelly takes place in specialized hives/ OR is a specialised form of beekeeping and involves more or less complicated procedures. The royal jelly sold in Germany is largely from China. Due to the fact that the procedure requires removing the queen, and the colony is exposed to extreme stress, the production of royal jelly in Germany has little public support.
Royal jelly and propolis are used as raw materials in pharmaceutical products. Howe... | | |
| | | ...age treatment plants and other muddy or foul waters. The larvae have a breathing tube, which is up to 100 mm in length. Therefore they are known as rat-tailed maggots. The larvae of drone flies develop to a body length of up to 20 mm. Due to the fact that they filter feculent particles from the water, they contribute to the clarification of water. | | |
| | The European paper wasp poses no risk to humans. In fact, it is very useful as a plant pollinator and insect predator. | | |
| | ... (up to several hundred at one time) in strongly smelling organic substances such as feces or carrion. The excretions of the larvae can be problematic for humans. therefore meat which has been in contact with them should not be eaten. Due to the fact that they carry germs, blow flies are known to spread diseases.
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| | Due to the fact that leaf beetles are herbivores they are often seen as pests, this includes the Colorado potato beetle, Psylliodes, Common asparagus beetle, Chrysomela populi and the Agelastica alni. | | |
| | In Central Europe the alder leaf beetle is commonly encountered and as only representative species of the genus Agelastica. In fact it is found almost everywhere in the Palearctic. It does not occur in the Alps. Agelastica alni reproduce once a year and are not endangered. | | |
| | Amongst humans, particularly in western industrialized countries, spiders have a bad reputation. This irrational aversion may in some cases lead to mental illness (arachnophobia). Some species of spiders are in fact dangerous to humans, for example, the black widow. In Cambodia, spiders are brutally killed and eaten. However in many Asian cultures, the spider is considered useful because it kills insects. In West Africa, the spider is considered a deity. | | |
| | Adults reach body lengths of 7. 5-10. 5 mm. The upper surface of their bodies is densely covered with grey or brown hair and therefore appears grey although it is in fact black. The wing covers (elytra ) have a series of small indentations. The antennae are black and remarkably long. The larvae of these beetles develop in sandy soils. | | |
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