Competition in Mosqviitoes. 2. Production of Aedes aegypti1 Larval Growth Retardant at Various Densities and Nutrition Levels

Moore, C. G.; Whitacre, David M.

doi:10.1093/aesa/65.4.915

Cited by 59 publications

(40 citation statements)

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“…Although (88) suggested that production of growth retardant factors was probably induced by food shortage. Evidence of chemi cal factors acting in dense populations was also demonstrated in Culex pipiens quinquefasciatus (45, 46).…”

Section: Cause and Effectmentioning

confidence: 99%

Influence of Population Density on Size, Fecundity, and Developmental Rate of Insects in Culture

Peters¹,

Barbosa²

1977

Annu. Rev. Entomol.

188

112

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Section: Cause and Effectmentioning

confidence: 99%

Influence of Population Density on Size, Fecundity, and Developmental Rate of Insects in Culture

Peters¹,

Barbosa²

1977

Annu. Rev. Entomol.

188

112

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“…One of these substances was named Growth Retardant Factor (GRF) by Moore & Fisher 22 . Later studies have confirmed the effect of GRF on larvae and pupae, and described other biological and chemical characteristics of them, including, the solubility of GRF in ether [23][24][25] .Those experiments that showed the effect of GRF differed greatly from the one discussed herein in the following ways: i) the concentration of larvae required for the effect of GRF to manifest itself was much higher than the concentration used in this study, ii) in those experiments, a single batch of larvae was exposed to a fixed volume of water without water replacement, for shorter periods. In this study, five batches of larvae were exposed to a fixed volume of water with a daily water replacement of 20%, over a long period (71 days).…”

Section: Discussionmentioning

confidence: 99%

Influence of water replacement on Diflubenzuron duration effect in the control of Aedes aegypti in simulated field conditions, in Northeastern Brazil

et al. 2013

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Introduction: Theoretically, it is possible to control dengue by reducing breeding sites. However in most countries, it has not been possible to obtain sustainable dengue control using only the reduction of potential breeding sites thus use of larvicides continues to be necessary. This paper presents an estimate of the rate of water replacement in residential water containers in the city of Fortaleza, northeast Brazil, and the respective duration of the effect of Diflubenzuron on Aedes aegypti immatures. Methods: Several trials were performed to estimate the duration of the effect of Diflubenzuron in simulated field conditions with replacement daily with 20% by volume of water. Eighteen containers with 20 litres of water treated with Diflubenzuron, and 6 containers with well water were used. The initial concentration of Diflubenzuron in the treated containers was 2.875 x 10-4 grams/litre. Third stages larvae were added to the containers, the first day of experiment. All the containers were inspected daily and dead larvae and pupae were removed and counted. Each trial was terminated when all larvae added to one of the groups (treated or control) had died or pupated. Results: From the 1st to the 19th day, the Diflubenzuron achieved 100% control, adjusting for the emergence of pupae in untreated containers not allowing any larvae to develop into pupae. From the 20th to the 70th day, the control ranged from 97.9% to 36.6%. Conclusions: This study reports a good larvicide effect of Diflubenzuron in the doses used by the Brazilian Programme of Dengue Control.

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“…albopictus larvae did not exclude this hypothesis. Conversely, Moore and Whitacre (1972) found that overcrowding was not a limiting condition for the development of the young larvae.…”

Section: Figmentioning

confidence: 90%

Studies on Aedes albopictus Larval Mass-Rearing Optimization

Medici¹,

Carrieri²,

Scholte³

et al. 2011

jnl. econ. entom.

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To set up a sterile male technique program to control Aedes albopictus (Skuse) in areas in northern Italy, a pilot mass-rearing facility is under development. For this purpose, experiments were carried out to find the optimal larval density for the optimization of the rearing parameters, i.e., to obtain the fastest larval development, the highest larval and pupal survival rate, and large-sized pupae. Several different larval densities, from 40 to 2874 larvae per liter, were tested. For densities from 40 to 600 larvae per liter significant size differences were found among pupae obtained under different larval densities. The larvae raised at the lowest density tended to be smaller and to develop most slowly, i.e., longer pupation time. Also, increasing water volume and depth seemed to negatively affect the pupation success. Compared with the other larval densities tested, the larvae reared at a density of 2874 larvae per liter developed slightly faster and showed higher survival rates, indicating this density as appropriate for the development of a mass rearing, at least using the current larval diet.

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Competition in Mosqviitoes. 2. Production of Aedes aegypti1 Larval Growth Retardant at Various Densities and Nutrition Levels

Cited by 59 publications

References 0 publications

Influence of Population Density on Size, Fecundity, and Developmental Rate of Insects in Culture

Influence of Population Density on Size, Fecundity, and Developmental Rate of Insects in Culture

Influence of water replacement on Diflubenzuron duration effect in the control of Aedes aegypti in simulated field conditions, in Northeastern Brazil

Studies on Aedes albopictus Larval Mass-Rearing Optimization

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