Temperature/toxicity relationships of some pyrethroids onCenopalpus pulcher (Acari: Acaridae)

Eesa, N. M.; Moursy, L. E.

doi:10.1007/bf01193976

Cited by 4 publications

(4 citation statements)

References 5 publications

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“…This finding is in agreement with those reported by Everson and Tonks, 1981;Subramanyam and Cutkomp, 1987;Eesa and Moursy, 1990. Toxicity of fenvalerate showed no significant change within any of the temperature ranges tested on mite nymphs.…”

Section: Resultssupporting

confidence: 83%

“…Cypermethrin (30% EG) displayed a negative temperature coefficient on both females and nymphs of T. urticae. This finding agrees with that reported earlier on the fruit-tree false spider mite, Cenopalpus pulcher (Eesa and Moursy, 1990).…”

Section: Resultssupporting

confidence: 82%

“…little has been published on temperature relationships in pyrethroid toxicity to mites, in contrast to many reports on insects. A positive correlation of measured pyrethroid toxicity to mite species with temperature after treatment has been documented in quite a few studies (Everson and Tonks, 1981;Subramanyam and Cutkomp, 1987;Eesa and Moursy, 1990). In a previous publication, we reported, for the first time, a negative temperature coefficient in cypermethrin toxicity to the fruit tree false spider mite, Cenopalpus pulcher (Eesa and Moursy, 1990).…”

Section: Introductionmentioning

confidence: 89%

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Temperature relationships in pyrethroid toxicity to the two?spotted spider mite, Tetranychus urticae Koch

Eesa

Moursy

1993

Exp Appl Acarol

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Section: Resultssupporting

confidence: 83%

Section: Resultssupporting

confidence: 82%

Section: Introductionmentioning

confidence: 89%

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Temperature relationships in pyrethroid toxicity to the two?spotted spider mite, Tetranychus urticae Koch

Eesa

Moursy

1993

Exp Appl Acarol

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“…In contrast to insects, mites show a positive temperature effect to both type I and II pyrethroids. 79…”

Section: Temperaturementioning

confidence: 99%

CHAPTER 3. Pyrethrins and Pyrethroid Insecticides

Schleier¹,

Peterson²

2011

Green Chemistry Series

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Its insecticidal properties have been known for more than 150 years; although the earliest mention of the Chrysanthemum flowers from which it originates comes from early Chinese history, where it is believed that the flower passed into Europe along the silk roads. 1 The term "pyrethrum" refers to the dried and powdered flower heads of a white-flowered, daisy-like plant. belonging to the Chrysanthemum genus. Pyrethrum's insecticidal properties were recognized in the middle of the 19th century, when an American named Jumticoff discovered that many Caucuses tribes used it for the control of body lice.' The earliest cultivation of pyrethrum, also called "Persian pyrethrum" or "Persian pow ders", was in the region of the Caucuses extending into Northern Persia. 2 The first Persian powders that were processed and commercialized in Europe in the 1820s were most likely prepared from a mixture of C. roseum and C. corneum. During and after 1876, these preparations were introduced into the USA, Japan, Africa and South America. 3 ,4 The superior insecticidal properties of C. cinerariaefolium were first discovered around 1845 and these species sub sequently supplanted previously cultivated species. Chrysanthemum cinerpr iaefolium is currently cultivated in the

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Pyrethrins and Pyrethroid Insecticides

III*

Peterson

2011

Green Trends in Insect Control

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Pyrethrum is one of the oldest and most widely used botanical insecticides and its insecticidal properties have been known for more than 150 years. The commercial limitations of pyrethrum extracts, which are collectively known as pyrethrins, have long been recognized because of their high rate of photodegradation and a short “knockdown” (rapid paralysis) effect. After the discovery of the constituents of pyrethrins, researchers searched for derivatives of pyrethrins that had a higher resistance to photodegradation. This search directly led to the synthesis of pyrethroids. The advantages of pyrethrins and pyrethroids in pest management are that they are highly lipophilic, have a short half-life in the environment, have a low terrestrial vertebrate toxicity, and do not biomagnify like older chemical classes such as organochlorines. This chapter reviews the chemistry, mode of action, metabolism, environmental fate, and human-health and environment risks for pyrethrins and pyrethroids.

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Temperature/toxicity relationships of some pyrethroids onCenopalpus pulcher (Acari: Acaridae)

Cited by 4 publications

References 5 publications

Temperature relationships in pyrethroid toxicity to the two?spotted spider mite, Tetranychus urticae Koch

Temperature relationships in pyrethroid toxicity to the two?spotted spider mite, Tetranychus urticae Koch

CHAPTER 3. Pyrethrins and Pyrethroid Insecticides

Pyrethrins and Pyrethroid Insecticides

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