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The word cochineal is derived from the French cochenille, derived from Spanish cochinilla, in turn derived from Latin coccinus, from Greek κόκκινος kokkinos, "scarlet" from κόκκος kokkos (Latin equivalent coccum) referring in this case either to the oak berry (actually the insects of the genus Kermes) or to a red dye made from the crushed bodies thereof.
The cochineal is an insect of economic and historical importance as a main source of the red dye carmine. It has reportedly been used for this purpose in the Americas since the 10th century. [ 2 ] Genus Dactylopius is also important because several species have been used as agents of biological pest control , and because several are known as ...
The scale insect genus Porphyrophora is a large group in the family Margarodidae, which includes the insects Polish cochineal and Armenian cochineal formerly used in dye production. References [ edit ]
The Polish cochineal lives on herbaceous plants growing in sandy and arid, infertile soils. Its primary host plant is the perennial knawel (Scleranthus perennis), but it has also been known to feed on plants of 20 other genera, including mouse-ear hawkweed (Hieracium pilosella), bladder campion (Silene inflata), velvet bent (Agrostis canina), Caragana, [4] smooth rupturewort (Herniaria glabra ...
A new strain of the cochineal was introduced from Opuntia stricta collected in Australia in 1997 with encouraging results. The genotype of Dactylopius opuntiae which effectively controlled Opuntia stricta in South Africa was also introduced in Kenya, resulting in the reduction in flowering and fruiting, and leading to the death of the plants.
Some, such as the cochineal, kermes, lac, Armenian cochineal, and Polish cochineal, have been used to produce red dyes for coloring foods and dyeing fabrics. [ 27 ] [ 28 ] [ 29 ] Both the colour name " crimson " and the generic name Kermes are from Italian carmesi or cremesi for the dye used for Italian silk textiles, in turn from the Persian ...
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to draw or drain out all the blood before replacing it with embalming fluids like formaldehyde for preservation of structures as practiced in Anatomy: Head rest: to elevate the head Ropes: to tie the corpse in places so that it does not change posture during dissection Rubber gloves: protective; video link: Goggles: protective; video link ...