Temperature Requirements of Some Aphids and Their Parasites

Campbell, Alan D.; Frazer, B. D.; Gilbert, Neil; Gutiérrez, A. P.; Mackauer, M.

doi:10.2307/2402197

Cited by 1,099 publications

(989 citation statements)

References 17 publications

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“…Tais efeitos deletérios são verificados principalmente quando as altas temperaturas são mantidas constantes (Campbell et al, 1974). Na fase adulta, também observou-se um decréscimo do tempo mediano de vida com o aumento da temperatura verificandose uma maior longevidade a 18ºC e menor a 30ºC.…”

Section: íNstaresunclassified

Biologia de Aphis gossypii Glover, 1877 (Hemiptera: Aphididae ) em abobrinha cultivar caserta (Cucurbita pepo L.) em diferentes temperaturas

et al. 2008

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BIOLOGIA DE RESUMOAs cucurbitáceas apresentam grande demanda no mercado mundial e uma das principais pragas que atacam essas culturas é o pulgão Aphis gossypii. Assim, objetivou-se estudar aspectos da biologia desse afídeo em função da temperatura na cultivar de abobrinha Caserta (Cucurbita pepo L.). Utilizaram-se discos foliares (2,5cm de ) acondicionados, com a face abaxial para cima, em placas de Petri (5cm de ) contendo uma lâmina de ágar-água. Em cada placa foi deixada uma ninfa recém-nascida, acompanhandose o seu desenvolvimento ao longo de todo o ciclo de vida, em diferentes temperaturas (18, 21, 24, 27 e 30±1ºC), 70±10% UR e fotofase de 12 horas. O delineamento foi inteiramente casualizado, com 60 repetições. Verificou-se que as temperaturas afetaram o desenvolvimento de A. gossypii. Menor duração do período ninfal e maior produção diária de ninfas foram observadas a 24 e 27ºC. A temperatura de 30ºC provocou efeito deletério, causando 68% de mortalidade na fase ninfal. Termos para indexação:Pulgão, ciclo biológico, Cucurbitaceae. ABSTRACTThe cucurbitaceous plants are always on demand in world market and one of the main pests on these crop is the aphid Aphis gossypii. This work aimed to study the biological aspects of A. gossypii on the Caserta (Cucurbita pepo L.) cultivar in different temperatures. To determine the biological aspects of A. gossypii, nymphs were kept on leaf disks (2.5 cm ) with the abaxial side up in Petri dishes (5 cm ) containing a thin layer of agar-water. Each dish contained one nymph of the first instar of the aphid. The development and the other biological parameters were evaluated in different temperatures (18, 21, 24, 27 e 30±1ºC), 70±10% RH and 12h photophase. The experiments were complete randomized design with 60 replicates. The results showed that the temperature influenced the development of A. gossypii. The shorter nymphal period and higher daily nymph s production were observed at 24 and 27 ºC. The temperature of 30 ºC was deleterius inducing to 68% of mortality at the nymphal stage of A. gossypii.

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Section: íNstaresunclassified

Biologia de Aphis gossypii Glover, 1877 (Hemiptera: Aphididae ) em abobrinha cultivar caserta (Cucurbita pepo L.) em diferentes temperaturas

et al. 2008

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“…Equações lineares de regressão y I = a i + b i t foram estimadas entre o inverso do desenvolvimento (1/D variável resposta, y t -dias) em função das temperaturas estudadas (variável independente, t -o C) após Campbell et al (1974), bem como os respectivos erros-padrão para as médias estimadas da temperatura básica (Tb) e da constante térmica (K) foram estimados. Apenas os dados oriundos de temperaturas que tiveram efeito direto no desenvolvimento foram utilizados para a estimativa do requerimento térmico (18,22,25, 28 e 30 o C); portanto, excluindo a temperatura de 32 o C. A T b e a K foram estimadas pela relação do intercepto com o coefi ciente linear da equação (i.e., T b = -a i /b i ), resultante da estimativa de desenvolvimento zero na equação (0 = a i + b i t).…”

Section: Efeito Da Temperatura No Desenvolvimento Deunclassified

Exigências térmicas da praga do coqueiro Atheloca subrufella (Hulst)(Lepidoptera: Phycitidae)

Santana¹,

Barros²,

Torres³

et al. 2010

Neotrop. entomol.

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-Among the important pests of coconut, the coconut moth Atheloca subrufella (Hulst) is a signifi cant pest of fl owers and fruits, and is found across all coconut-producing regions in Brazil. We investigated the thermal requirements of A. subrufella and estimated the number of generations for two different growing coconut regions in Pernambuco State. The developmental time of all immature stages reduced as the temperature increased. The egg to adult period ranged from 19.3 to 59.8 days from 32ºC to 18 o C, respectively. The survival of the period from egg to adult was 25% at extreme temperatures (18 o C and 32 o C), while at the intermediate temperatures it was over 72%. Based on the thermal requirements determined for A. subrufella and the average temperatures determined for "Zona da Mata" and "Sertão" of Pernambuco State, it was estimated that A. subrufella is able to complete up to 13 generations per year in both areas. These results indicate that A. subrufella exhibited development and reproduction limited by temperatures higher than 32 o C and lower than 18 o C. However, based on the thermal requirements of A. subrufella and the mean temperatures of the "Zona da Mata" and "Sertão" of Pernambuco State, this pest can develop throughout the entire year.

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“…Regression equations for rate of development, physiological time (DO), and lower threshold temperatures were calculated by the method of Campbell et al (1974) for each of the life stages (Table 1). Lower threshold temperatures were calculated by extrapolation through the x-axis.…”

Section: Instar Durationmentioning

confidence: 99%

“…Lower threshold temperatures were calculated by extrapolation through the x-axis. This approach may involve considerable error, but as Campbell et al (1974) pointed out, to reduce such errors may require 2-12 observations each day, particularly when ambient temperature approaches S ... the threshold value. However, for field use thresholds derived by extrapolation may be adequate, particularly where strong linear associations of development rate and temperature are apparent over the range of favourable temperatures, as for the pea aphid (Campbell & Mackauer 1975).…”

Section: Instar Durationmentioning

confidence: 99%

Effect of temperature on the biology of bluegreen lucerne aphid,Acyrthosiphon kondoi

Rohitha

Penman

1983

New Zealand Journal of Zoology

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Temperature/development relationships in bluegreen lucerne aphid, Acyrthosiphon kondoi Shinji, were studied at 5 constant temperatures between 6°C and 30°C using aphids held individually in stem cages. All biological variables recorded showed strong associations with temperature. Reproduction was clearly modified by temperature, increasing temperature reducing the pre-oviposition period, total reproductive period, and total number of progeny produced; maxima were at 11°C for these variables. No aphids survived at 30°C, and at 25.SoC there was limited reproductive success. There were generally 4 instars, but up to 15% of aphids went through 5 instars. Development rate showed a linear relationship with temperature between 6°C and 20.5°C; extrapolation indicated a lower threshold for development of 2.63°C. Using this threshold value, developmental comparisons expressed in terms of physiological time (day degrees, DO) showed that all instars were similar in duration (38.4 DO each). The rate of generation completion was approximately 3 times as long as doubling time (145 DO, as against 46 DO). Comparison of life tables for progeny from alate and apterous maternal morphs showed significant differences in the intercepts of regression for the intrinsic rate of increase and the doubling rate against temperature. Possible implications of these differences in performance of progeny from the 2 morphs are discussed.

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Temperature Requirements of Some Aphids and Their Parasites

Cited by 1,099 publications

References 17 publications

Biologia de Aphis gossypii Glover, 1877 (Hemiptera: Aphididae ) em abobrinha cultivar caserta (Cucurbita pepo L.) em diferentes temperaturas

Biologia de Aphis gossypii Glover, 1877 (Hemiptera: Aphididae ) em abobrinha cultivar caserta (Cucurbita pepo L.) em diferentes temperaturas

Exigências térmicas da praga do coqueiro Atheloca subrufella (Hulst)(Lepidoptera: Phycitidae)

Effect of temperature on the biology of bluegreen lucerne aphid,Acyrthosiphon kondoi

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