The apple sawfly, <i>Hoplocampa testudinea</i>: a temperature driven model for spring emergence of adults

Graf, B.; Höhn, H.; Höpli, H. U.

doi:10.1111/j.1570-7458.1996.tb00794.x

Cited by 26 publications

(43 citation statements)

References 17 publications

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“…Thermal constants are frequently used to create predictive models of pest development in various environments, including stored products (Subramanyam et al 1990), greenhouses and orchards (Graf et al 1996).…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature on the developmental rate, longevity and parasitism of Aphidius ervi Haliday (Hymenoptera: Aphidiidae)

Malina¹,

Praslička²

2008

Plant Prot. Sci.

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Malina R., Praslička J. (2008): Effect of temperature on the developmental rate, longevity and parasitism of Aphidius ervi Haliday (Hymenoptera: Aphidiidae). Plant Protect. Sci., 44: 19-24.Temperature-dependent development, longevity and parasitism of the parasitoid Aphidius ervi Haliday was measured at four constant temperatures between 15°C and 30°C using Aphis pomi de Geer as host. The thresholds for egg-mummy and mummy-adult development were 6.8°C and 3.9°C, respectively. Development into mummies required an average of 146.3 degree-days (DD), while development into adults took an average of 85.3 DD. Longevity was increasing linearly in the range from 15°C to 25°C (8-15 days), but was lower at 30°C (11 days). The relationship between parasitism, recorded as percent aphids mummified, and temperature was increasing at the temperatures 15-25°C, but decreasing at higher temperatures; 10.8% of the aphids were parasitised at 15°C, 15.9% at 25°C and 14.6% at 30°C. These results are compared with previously reported data on temperature-dependent development of A. ervi on a different host.Keywords: Aphidius ervi; development time; parasitism; longevity; thermal constants 20 Vol. 44, Plant Protect. Sci. Ohta & Ohtaishi (2003) have reported also the temperature-dependent longevity of Aphidius gifuensis Ashmead. The apple aphid, Aphis pomi de Geer, is a common inhabitant of apple orchards. Dense populations may cause abnormal growth of terminal shoots, reduce the levels of non-structural carbohydrates in shoots, roots and leaves and lower the yield of fruit (Kaakeh et al. 1993).The knowledge of thermal constants and lower development thresholds provides essential information to determine the development rate of a particular species of arthropod (Jarošík et al. 2002). Thermal constants are frequently used to create predictive models of pest development in various environments, including stored products (Subramanyam et al. 1990), greenhouses and orchards (Graf et al. 1996).We studied the effect of temperature on the development, percentage of parasitism and longevity of Aphidius ervi at four constant temperatures to evaluate its potential as a biological agent to control Aphis pomi. MATERiAL AnD METhoDsHost aphid source. Aphis pomi colonies used in this study originated from a single collection of wild aphids from apple trees in the town Banská Bystrica (48°44'N, 19°08'E) in April 2006. The colonies were maintained on fresh apple tree shoots (replaced every 2 days after all aphids had migrated from dry to fresh shots) in a thermostat at 25 ± 1°C, 60 ± 5% RH and a photoperiod of 16:8 (L:D) hours. After a 1-month rearing period, the colonies were used for parasitoid experiments.Parasitoid source. Aphidius ervi were obtained from a single collection of aphid mummies from apple trees in the town Banská Bystrica in May 2006. Mummies were kept individually in small glass vials (5 × 1.5 cm) under the same temperature and humidity conditions as aphids. Mummies were checked daily and parasitoid adults retrieved as they hatc...

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Section: Introductionmentioning

confidence: 99%

Effect of temperature on the developmental rate, longevity and parasitism of Aphidius ervi Haliday (Hymenoptera: Aphidiidae)

Malina¹,

Praslička²

2008

Plant Prot. Sci.

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“…Non-linear functions are used for reproductive rates and survival of adults (e.g. Graf et al, 1996;Graf et al, 1999;Graf et al, 2001a;Schaub et al, 2005;Graf et al, 2006). …”

Section: Temperature-dependent Developmentmentioning

confidence: 99%

Web-Based Decision Support for Sustainable Pest Management in Fruit Orchards: Development of the Swiss System SOPRA

Samietz¹,

Graf²,

Höhn³

et al. 2011

Efficient Decision Support Systems - Practice and Challenges From Current to Future

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“…Adults emerge from the soil at the tight cluster stage and oviposition in the receptacle of apple flowers during full bloom can damage up to 14% of apples in Quebec orchards [3][4][5]. Eight to 15 days later, at the petal fall stage, larvae hatch and develop in young fruits, causing damage by digging galleries under the epidermis while feeding on the pulp [6].…”

Section: Introductionmentioning

confidence: 99%

Effect of Achillea millefolium Strips and Essential Oil on the European Apple Sawfly, Hoplocampa testudinea (Hymenoptera: Tenthredinidea)

Almeida¹,

Cormier²,

Lucas³

2017

Entomol Ornithol Herpetol

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The European apple sawfly Hoplocampa testudinea (Klug) (Hymenoptera: Tenthredinidae) is a pest in numerous apple orchards in eastern North America. In Quebec, Canada, the European apple sawfly can damage up to 14% of apples and growers use phosphate insecticide during the petal fall stage to control the pest. Since the insecticide is toxic for beneficial insects, we established flower strips of Achillea millefolium L. (Asterales: Asteraceae) to interfere with the oviposition of the insect as an alternative. Populations of European apple sawfly adults were significantly reduced in areas close to flower strips compared to unmanaged areas (natural groundcover). In order to understand the mechanism of the flower strip effect, we tested the repellent effect of A. millefolium essential oil on populations of H. testudinea. Twenty flowers per apple tree were sprayed during full bloom, the oviposition period of the pest. Sprayed and control flowers were then collected and dissected to note the presence of oviposition scars and eggs of the European apple sawfly. Significantly less scars and eggs were observed on sprayed flowers than on control flowers, which means that A. millefolium had a repellent effect on the insect.

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The apple sawfly, Hoplocampa testudinea: a temperature driven model for spring emergence of adults

Cited by 26 publications

References 17 publications

Effect of temperature on the developmental rate, longevity and parasitism of Aphidius ervi Haliday (Hymenoptera: Aphidiidae)

Effect of temperature on the developmental rate, longevity and parasitism of Aphidius ervi Haliday (Hymenoptera: Aphidiidae)

Web-Based Decision Support for Sustainable Pest Management in Fruit Orchards: Development of the Swiss System SOPRA

Effect of Achillea millefolium Strips and Essential Oil on the European Apple Sawfly, Hoplocampa testudinea (Hymenoptera: Tenthredinidea)

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