Effect of Synthetic “Queen Substance” and Some Related Chemicals on Immature Stages of Aedes aegypti1

Quraishi, M. Sayeed; Thorsteinson, A. J.

doi:10.1093/jee/58.2.185

Cited by 18 publications

(8 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although few pupae seemed affected by the concentrations of capric acid and its soap tested here, those that were affected behaved as those described by Quraishi and Thorsteinson (1965), namely loss of buoyancy, lying on their side on the bottom with movements resulting in horizontal motion and, later, death. Soon the normal transparency of the body became clouded, initially in the thorax, with the cloudiness gradually intensifying and spreading throughout the body in a manner much like the effects of capric acid in Agria (= Pseudosarcophaga) afinis auct.…”

Section: Resultssupporting

confidence: 47%

“…Asphyxia and complete paralysis, causing distortion of the whitened body, was the end. Although few pupae seemed affected by the concentrations of capric acid and its soap tested here, those that were affected behaved as those described by Quraishi and Thorsteinson (1965), namely loss of buoyancy, lying on their side on the bottom with movements resulting in horizontal motion and, later, death.…”

Section: Resultssupporting

confidence: 47%

“…Quraishi and Thorsteinson ( 1965) reported that capric acid killed mosquito pupae in the laboratory. Pupae were affected very little in this work.…”

Section: Discussionmentioning

confidence: 99%

See 2 more Smart Citations

On Capric Acid and Potassium Capricate as Mosquito Larvicides in Laboratory and Field

Maw¹,

House²

1971

Can Entomol

View full text Add to dashboard Cite

Can. Ent. 103: 1435-1440 (1971) For 100% mortality, concentrations of potassium capricate, 0.0009 to 0.005 M, are very effective insecticides against Aedes aegypti (Linnaeus), particularly larvae, in the laboratory (23.0Oo~0.1"C) within 1 to 5 days. And likewise potassium capricate, 0.001 to 0.002 M, and variously applied capric acid per se are effective against native mosquitoes in water pools in th-field (5"-16°C). With dosage-mortality tests of potassium capricate in the laboratory, larval mortality in A. aegypti was directly dependent on concentration, time, and age, tolerance increasing with age of the larvae. Although pupae seemed little affected, about 60% of the adults formed died during eclosion in 0.003 to 0.005 M mostly within 3 days. Admittedly these substances kill fish, crustaceans, and other insects, but in the field, treated pools soon regained living inhabitants. Some evidence shows that capric acid may be the least liable to endanger fish. Advantageous properties of these long-recognized insecticides include that both kill mosquitoes, both are easily biodegraded to harmless simple components, and both are readily metabolized by mammals.

show abstract

Section: Resultssupporting

confidence: 47%

Section: Resultssupporting

confidence: 47%

See 1 more Smart Citation

On Capric Acid and Potassium Capricate as Mosquito Larvicides in Laboratory and Field

Maw¹,

House²

1971

Can Entomol

View full text Add to dashboard Cite

show abstract

“…confusum, suggesting its use to control the pest in infested wheat meal. The above acid was detrimental to mosquito larvae also (QURAISHI and THORSTEINSON 1965a). Alpha fluoro fatty acids were invariably phagorepellents towards immature stages of D. muculutus.…”

Section: Discussionmentioning

confidence: 96%

The effect of fatty acids and their alpha‐fluoro analogs on the feeding response and development of the hidebeetle Dermestes maculatus Deg.

Cohen

Levinson

1974

Zeitschrift für Angewandte Entomologie

View full text Add to dashboard Cite

Larvae and adults of the species Dermestes maculatus were attracted by palmitic and stearic acids and repelled by a lower homolog, caprylic acid. Lauric acid, which strongly deterred larvae, was phagostimulatory to adults. Palmitic and stearic acids enhanced larval growth and metamorphosis, whereas caprylic and lauric acids were inhibitory. The above effects parallel the feeding response. Larvae differed from adults in their response to alpha fluoro fatty acids. The former were invariably repelled by the fluoro analogs, whereas the latter were stimulated to feed on a diet containing alpha fluoro laurate and alpha fluoro stearate. It appears that mature stages were incapable of distinguishing between fatty acids and their respective fluoro derivatives. Sodium fluoro acetate was highly toxic to hidebeetle larvae, while alpha fluoro fatty acids appeared relatively nontoxic, inhibiting growth at a dietary level of 1.0% only. This moderate effect was ascribed to inhibition of beta oxidation, whereby the lethal fluoro acetate was not released. Zusammenfassung Die Wirkung von Fettsäuren und ihrer Alpha‐Fluoro‐Analogen auf die Nahrungsaufnahme und Entwicklung des Speckkäfers Dermestes maculatus Deg. Larven und Imagines von Dermestes maculatus Deg. wurden von Palmitic‐ und Stearic‐Säure angezogen und von der kürzeren Homologen, Caprylic‐Säure, abgestoßen. Lauric‐Säure wirkte stark abstoßend auf die Larven und phagostimulatorisch auf die Imagines. Palmitic‐ und Stearic‐Säure beschleunigten den Wuchs der Larven und die Metamorphose während Caprylic‐ und Lauric‐Säure verzögernd wirkten. Die Larven reagierten anders als die Imagines auf Alpha‐Fluoro‐Fettsäuren. Die Larven wurden von Fluoro Analogen immer abgestoßen, während die Imagines von Alpha‐Fluoro‐Laurat und Alpha‐Fluoro‐Stearat enthaltender Nahrung zur Nahrungsaufnahme stimuliert wurden. Anscheinend sind die Imagines nicht fähig zwischen Fettsäuren und ihren respectiven Fluoro‐Derivaten zu unterscheiden. Sodium‐Fluoro‐Acetat wirkte sehr giftig auf die Larven. Alpha‐Fluoro‐Fettsäure wirkte auf die Larven verhältnismäßig wenig giftig. Nahrung mit einem Zusatz von 1,0% dieser Säure verzögerte nur das Wachstum. Diese schwache Wirkung ist der Hemmung der Beta‐Oxidation zuzuschreiben, die das Freisetzen des tödlichen Fluoro‐Acetats verhindert.

show abstract

“…Newer agents, relatively free from the above drawbacks, will be the most likely candidates for insect control. Some of the chemicals which may meet these criteria are the insect growth regulators, which include natural insect hormones, hormone analogs, and fatty acid analogs (Jakob and Schoof 1972;Quraishi and Thorsteinson 1965a;Schaefer and Wilder 1972). Since mosquito control often requires the use of chemicals in the immediate vicinity of human habitations, the low mammalian toxicity and specificity of insect growth regulators makes them particularly attractive.…”

Section: Introductionmentioning

confidence: 99%

EFFECTS OF ECDYSONES, JUVENILE HORMONE ANALOGS, AND 6-OXOOCTANOIC ACID ON THE DEVELOPMENT OF THE MOSQUITO, CULEX TARSALIS (DIPTERA: CULICIDAE)

1974

View full text Add to dashboard Cite

Eggs, larvae, and pupae of Culex tarsalis Coquillett were treated with ecdysones, juvenile hormone analogs, and 6-oxooctanoic acid. Effects of these agents on mortality, induction of supernumerary stages, and adult emergence were determined. Topical treatment of eggs with CRD9499 (a juvenile hormone analog), β-ecdysone, and 22-isoecdysone caused a reduction in adult emergence. Treatment of fourth-instar larvae with these chemicals not only induced mortality but also caused the formation of supernumerary intermediate stages. Larvae of C. tarsalis were very susceptible to CRD9499, but pupae were resistant. The ecdysones caused some mortality but only at very high doses and would thus be of little use as larvicides. 6-Oxooctanoic acid caused high rates of mortality at 0.001 M concentrations.

show abstract

Effect of Synthetic “Queen Substance” and Some Related Chemicals on Immature Stages of Aedes aegypti1

Cited by 18 publications

References 0 publications

On Capric Acid and Potassium Capricate as Mosquito Larvicides in Laboratory and Field

On Capric Acid and Potassium Capricate as Mosquito Larvicides in Laboratory and Field

The effect of fatty acids and their alpha‐fluoro analogs on the feeding response and development of the hidebeetle Dermestes maculatus Deg.

EFFECTS OF ECDYSONES, JUVENILE HORMONE ANALOGS, AND 6-OXOOCTANOIC ACID ON THE DEVELOPMENT OF THE MOSQUITO, CULEX TARSALIS (DIPTERA: CULICIDAE)

Contact Info

Product

Resources

About