Pyemotes tritici: Difference between revisions
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'''''Pyemotes tritici''''' is a species of [[mite]] known as the '''grain itch mite''' or '''straw itch mite'''. There is some evidence that it may be associated with [[dermatitis]] in humans.<ref>{{cite journal |author=S. Rosen, I. Yeruham & Y. Braverman |title=Dermatitis in humans associated with the mites ''Pyemotes tritici'', ''Dermanyssus gallinae'', ''Ornithonyssus bacoti'' and ''Androlaelaps casalis'' in Israel |journal=[[Medical and Veterinary Entomology]] |volume=16 |issue=4 |pages=442–444 |year=2002 |pmid=12510897 |doi=10.1046/j.1365-2915.2002.00386.x}}</ref> |
'''''Pyemotes tritici''''' is a species of [[mite]] known as the '''grain itch mite''' or '''straw itch mite'''. There is some evidence that it may be associated with [[dermatitis]] in humans.<ref>{{cite journal |author=S. Rosen, I. Yeruham & Y. Braverman |title=Dermatitis in humans associated with the mites ''Pyemotes tritici'', ''Dermanyssus gallinae'', ''Ornithonyssus bacoti'' and ''Androlaelaps casalis'' in Israel |journal=[[Medical and Veterinary Entomology]] |volume=16 |issue=4 |pages=442–444 |year=2002 |pmid=12510897 |doi=10.1046/j.1365-2915.2002.00386.x}}</ref> |
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==Life cycle== |
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''Pyemotes tritici'' is [[ovoviviparous]], this means that the embryos fully develop inside the female, emerging from the birth canal as adults. Males are born after a gestation period that is two days less than that of the females, the males help the females to emerge and copulation takes place as soon as the females are born. In fact any unmated female is unable to copulate later in life. Fewer than 10% of the offspring are male, although the proportion rises under conditions of gross overcrowding. On average, each female produces about 250 offspring, but after mating with about fifteen females, male fertility rates decline.<ref name=Schuster>{{cite book|author=Schuster,Reinhart |title=The Acari: Reproduction, development and life-history strategies|url=https://books.google.com/books?id=_fvwCAAAQBAJ&pg=PA209 |year=2012 |publisher=Springer Science & Business Media |isbn=978-94-011-3102-5 |pages=209–219}}</ref> |
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==Ecology== |
==Ecology== |
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Revision as of 19:10, 29 August 2018
| Pyemotes tritici | |
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| Species: | P. tritici
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| Pyemotes tritici (LaGrèze-Fossat & Montagné, 1851) [1]
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Acarus tritici LaGrèze-Fossat & Montagné, 1851 | |
Pyemotes tritici is a species of mite known as the grain itch mite or straw itch mite. There is some evidence that it may be associated with dermatitis in humans.[2]
Life cycle
Pyemotes tritici is ovoviviparous, this means that the embryos fully develop inside the female, emerging from the birth canal as adults. Males are born after a gestation period that is two days less than that of the females, the males help the females to emerge and copulation takes place as soon as the females are born. In fact any unmated female is unable to copulate later in life. Fewer than 10% of the offspring are male, although the proportion rises under conditions of gross overcrowding. On average, each female produces about 250 offspring, but after mating with about fifteen females, male fertility rates decline.[3]
Ecology
The Angoumois grain moth (Sitotroga cerealella) is a pest of stored grain, laying its eggs on the seedheads in the field or on the grain in the silo. Until 1882, it was thought that Pyemotes tritici, known as the grain itch mite and sometimes found swarming over straw or hay, was feeding on the crop, however it turns out that the mites are carnivores and are feeding on the larvae of the moth. When the mites come into contact with human skin, they attempt to feed there, causing an intense itchiness, often over the whole body surface. After about sixteen hours, blister-like vesicles erupt on the skin surface and other symptoms can include headache, joint pain, fever and nausea.[4]
References
- ^ "Species Pyemotes tritici (LaGrèze-Fossat & Montagné, 1851)". Australian Faunal Directory. Department of the Environment, Water, Heritage and the Arts. Retrieved May 14, 2010.
- ^ S. Rosen, I. Yeruham & Y. Braverman (2002). "Dermatitis in humans associated with the mites Pyemotes tritici, Dermanyssus gallinae, Ornithonyssus bacoti and Androlaelaps casalis in Israel". Medical and Veterinary Entomology. 16 (4): 442–444. doi:10.1046/j.1365-2915.2002.00386.x. PMID 12510897.
- ^ Schuster,Reinhart (2012). The Acari: Reproduction, development and life-history strategies. Springer Science & Business Media. pp. 209–219. ISBN 978-94-011-3102-5.
- ^ Berenbaum, May (1993). Ninety-nine More Maggots, Mites, and Munchers. University of Illinois Press. pp. 31–32. ISBN 978-0-252-06322-0.
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