The Measurement and Control of Humidity

Buxton, P. A.; Mellanby, Kenneth

doi:10.1017/s0007485300012608

Cited by 135 publications

(42 citation statements)

References 3 publications

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“…alstoniae was studied in the laboratory at temperatures of 20, 25 and 30+ 1 ~ each in combination with a relative humidity (RH) of 50, 70 and 90 + 3%, which was maintained after the method of Buxton and Mellanby (1934). In each experiment, one gravid female was released in a colony ofB.…”

Section: Methodsmentioning

confidence: 99%

Influence of temperature and relative humidity on the development ofAmblyseius alstoniae (Acari: Phytoseiidae)

Kumari

Sadana

1991

Exp Appl Acarol

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Kumari, M. and Sadana, G.L., 1991. Influence of temperature and relative humidity on the development of Amblyseius alstoniae (Acari: Phytoseiidae). Exp. Appl. Acarol., Reproduction and development ofAmblyseius alstoniae Gupta is significantly affected by temperature and relative humidity (RH), optimum being a temperature of 25~ and RH of 70%. At this combination, the viability of eggs, fecundity and daily egg production were higher, oviposition period and longevity were of longer duration, and mortality was minimal. Increase or decrease in these temperature and RH levels leads to a drop in fecundity, longevity and oviposition period and an increase in mortality. Longevity of females is always greater than that of males, irrespective of temperature and RH. Female:male ratio decreases with increase in temperature, irrespective of RH.

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Section: Methodsmentioning

confidence: 99%

Influence of temperature and relative humidity on the development ofAmblyseius alstoniae (Acari: Phytoseiidae)

Kumari

Sadana

1991

Exp Appl Acarol

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“…Larvae were moved to fresh diet in new wells each day and given progressively more room to grow by placing them five, three, two and then one larva per well over consecutive days. The tissue-culture plates were kept on racks in a desiccator with a super saturated solution of K 2 SO 4 in its base (to create an environment with 95% relative humidity, Sweetman, 1933) at 35 o C. At the first sign of defaecation (yellow colour in the diet), which occurs just prior to pupation, larvae were gently transferred to clean wells lined with two layers of Kimwipes ® tissue paper and placed in a second desiccator containing a supersaturated solution of NaCl (75% relative humidity, Buxton and Mellanby, 1934) at 35 o C. Prepupae and pupae were checked daily. When close to adult emergence, each pupa was provided with a small quantity of bee bread and sugar candy, so that the newly-emerged adult bee could obtain some food immediately.…”

Section: Larval Bee/avidin Assaymentioning

confidence: 99%

Effects of ingestion of a biotin-binding protein on adult and larval honey bees

et al. 2002

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-The insecticidal properties of biotin-binding proteins (BBPs) have recently been exploited in transgenic plants. As BBPs have a broad spectrum of insect toxicity, their potential impacts on non-target insects such as honey bees need to be assessed. In this study, the effects of feeding a purified BBP, avidin, to honey bee larvae and adults were determined. A realistic larval dosing regime was developed by estimating the pollen content of brood food in the field and adding avidin to artificial diet at rates that simulated the presence of avidin-expressing transgenic pollen in brood food. Larval survival and development were unaffected by avidin in assays which simulated larvae receiving pollen expressing 0, 4 or 40 µM avidin at concentrations of 164 µg pollen per mg food for the first 2 days and 880 µg pollen per mg food thereafter. Food consumption and survival of adult bees were also unaffected by avidin added to pollen-candy at levels corresponding to pollen expression of 0, 6.7 or 20 µM avidin.Apis mellifera / biotin-binding protein / avidin / transgenic plant

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“…They were then observed under different temperature and humidity conditions. The temperatures used were 20, 25, 30 and 35ºC and the relative humidities were maintained at 50, 70, 90% following the procedure of Buxton and Mellanby (1934). All the studies were carried out at 12:12 light: dark photoperiods.…”

Section: Methodsmentioning

confidence: 99%

Effects of temperature, relative humidity and host on the biology of anisopteromalus calandrae (Hymenoptera: pteromalidae)

Ahmed

Hasan

Ahmed

et al. 2015

Bangladesh J. Zool.

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Developmental period of the pteromalid wasp Anisopteromalus calandrae, was observed in the laboratory using two types of hosts at different constant temperature and relative humidity. The developmental period ranged from 28.6 ± 6.6 days at 20°C temperature and 90% R.H. to 10.7 ± 2.1 days at 35°C and 90% R.H. Mating of the adult parasites occurred shortly after emergence at all the temperature regimes and relative humidities under study period. The female started laying eggs within 1 day at 25, 30 and 35°C and in about 1.5 -2.0 days at 20°C. Relative humidity had no appreciable effect on oviposition. The incubation period was 2.1 ± 0.1 days at 20°C and 50% R.H. The larval period decreased from 9.3 ± 0.1 days at 20°C to 3.2 ± 0.1 days at 35°C. The relative humidity played no pronounced effect on the larval durations. The developmental period from egg to adult with Rhizopertha dominica as host was found to be shorter, being approximately one day less than that of S. oryzae as host. The duration of developmental period of male was less than that of female irrespective of temperatures and relative humidity conditions. The pupal period in female individuals decreased from 15.5 ± 0.1 days at 20ºC to 5.1 ± 0.1 days at 35ºC. The variations in relative humidity at different constant temperatures lengthened the pupal period to a lesser extent as was revealed form the experiments performed.

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The Measurement and Control of Humidity

Cited by 135 publications

References 3 publications

Influence of temperature and relative humidity on the development ofAmblyseius alstoniae (Acari: Phytoseiidae)

Influence of temperature and relative humidity on the development ofAmblyseius alstoniae (Acari: Phytoseiidae)

Effects of ingestion of a biotin-binding protein on adult and larval honey bees

Effects of temperature, relative humidity and host on the biology of anisopteromalus calandrae (Hymenoptera: pteromalidae)

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