The apple sawfly, <i>Hoplocampa testudinea</i>: Temperature effects on adult life‐span and reproduction

Graf, B.; Höpli, H. U.; Höhn, H.

doi:10.1046/j.1570-7458.2001.00795.x

Cited by 11 publications

(25 citation statements)

References 7 publications

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“…Thus, the pre-bloom applications aimed at controlling sawfly adults often may not reach the target. Application during petal fall aimed at hatching sawfly larvae is considered to be the most important by most authors (Bovien, Stapel, 1940;Leski, 1960;Graf et al, 1996 a;b;2001;Ciglar, Barić, 2002). Shortly after hatching from the egg, larva penetrates into the fruitlet and becomes well protected from contact insecticides.…”

Section: Species Ratio Spring Emergence Population Dynamics and Dammentioning

confidence: 99%

“…White sticky traps are used to monitor the beginning and activity of flight of sawfly adults (Owens, Prokopy, 1978;Wildbolz, Staub, 1984). Phenology models for predicting apple sawfly spring emergence, adult life span, egg-laying activity and egg-hatch were developed by Graf et al (1996 a;2001;. In addition, a model to predict possible infestation levels of black plum sawfly with respect to environmental conditions was presented (Шевчук, Денисюк, 2009).…”

Section: Species Ratio Spring Emergence Population Dynamics and Dammentioning

confidence: 99%

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Species ratio, spring emergence, population dynamics and damage of plum sawflies Hoplocampa minuta and H. flava in plum orchard

Tamošiūnas

Valiuškaitė

Survilienė

et al. 2014

Zemdirbyste-Agriculture

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An investigation of black plum sawfly (Hoplocampa minuta Christ, 1791) and yellow plum sawfly (Hoplocampa flava Linnaeus, 1761) populations using white sticky traps Rebell ® bianco was carried out in a plum orchard of Institute of Horticulture of Lithuanian Research Centre for Agriculture and Forestry from 2010 to 2012. A possibility to predict spring emergence of H. minuta and H. flava using temperature sum method, species ratio, main population parameters and relation between trap catches and infestation levels were investigated. H. minuta appeared to be more dominant in the complex of two plum sawfly species during the study overall, building up to 62% of individuals in comparison to H. flava and, considering various population parameters (emergence and flight dynamics, population density, sex ratio) being more significant contributor to fruit damage. Population density and flight dynamics were driving factors in determining potential damage to crop. Coincidence between mass flight and flowering periods was one of the major factors influencing fruit damage caused by plum sawflies. When mass flight coincided with flowering phase, vulnerable to sawfly attack of plum cv. 'Stanley', a high damage level of 27.8% was observed. When mass flight was strongly shifted towards the end of flowering, a relatively low damage of 7.0% was recorded. Based on the results of the correlation analysis, trap catch data could be reliably used to predict the magnitude of fruit damage level only when mass flight coincides with susceptible flowering phase. Further studies are needed to establish reliable damage thresholds for different plum cultivars. Temperature sum model to predict emergence of first plum sawfly adults was proposed. The model was based on soil temperature at 10 cm depth and two different starting dates to begin calculation. Temperature sums of 86 and 84 degree-days were calculated. Provisionary date at a temperature sum of 60 degree-days is proposed for trap placement in the orchards.

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Section: Species Ratio Spring Emergence Population Dynamics and Dammentioning

confidence: 99%

Section: Species Ratio Spring Emergence Population Dynamics and Dammentioning

confidence: 99%

Species ratio, spring emergence, population dynamics and damage of plum sawflies Hoplocampa minuta and H. flava in plum orchard

Tamošiūnas

Valiuškaitė

Survilienė

et al. 2014

Zemdirbyste-Agriculture

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“…So far, various means have been developed for optimization of apple sawfly management. Several tools for predicting the spring emergence of adult sawflies (Graf et al, 1996 a; Zijp, apple orchards Blommers, 1997;Tamošiūnas, Valiuškaitė, 2013), life span and egg-laying time (Graf et al, 2001), embryonic development duration and egg-hatch (Ciglar, Barić, 2002;Graf et al, 2002;Falta, Kneifl, 2006) were developed. White sticky traps were investigated and proposed as a valuable and reliable tool for monitoring apple sawfly population dynamics and infestation prognosis (Wildbolz, Staub, 1984;Galli et al, 1993;Graf et al, 1996 b), economic damage threshold was determined under western Germany, Swiss and Lithuanian conditions (Wildbolz, Staub, 1984;Graf et al, 1996 b;Tamošiūnas et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution patterns of apple sawfly populations in two differently managed commercial apple orchards

Tamošiūnas

Valiuškaitė

Jukna

et al. 2015

Zemdirbyste-Agriculture

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An investigation on spatial distribution of apple sawfly (Hoplocampa testudinea Klug, 1816) populations was conducted in organically and conventionally managed apple orchards of Institute of Horticulture, Lithuanian Research Centre for Agriculture and Forestry in 2010-2013. The aim of this study was to examine population density patterns of within orchard spatial distribution of apple sawfly. White sticky traps Rebell ® bianco (Andermatt Biocontrol, Switzerland) were used to monitor apple sawfly population density. In order to determine aggregation extent in sawfly populations, coefficient k of the negative binomial distribution, serving as aggregation index, was computed using maximum-likelihood method. Additionally, in order to accurately evaluate distribution patterns of apple sawfly within orchards, spatial analysis using Kernel density function was performed. Spatial analysis was performed using program package ARCGIS 10. Results of the study on spatial distribution patterns of apple sawfly imagoes demonstrated strong tendency for aggregation of adult sawflies across the orchard area. Localisation of clumps was quite constant despite the size of the orchard. Such knowledge could be applied for optimization of apple sawfly control strategies, especially in large orchards. The highest infestation levels were recorded exactly in the aggregations of sawflies over the course of the study. Moreover, knowing exact locations of such aggregations could be useful for optimization of positioning of traps in the orchards and, ultimately, restricting insecticide applications only to places where it is really necessary.

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“…Based on the temperature dependent ageing and reproduction rates published by Graf et al (2001), and the developmental rates for eggs quantified here, the original phenology model for adult emergence (Graf et al, 1996a, b) was expanded to include oviposition and egg hatch. Based on the temperature dependent ageing and reproduction rates published by Graf et al (2001), and the developmental rates for eggs quantified here, the original phenology model for adult emergence (Graf et al, 1996a, b) was expanded to include oviposition and egg hatch.…”

Section: Introductionmentioning

confidence: 99%

The apple sawfly, Hoplocampa testudinea: egg development and forecasting of egg hatch

Graf¹,

Höpli²,

Höhn³

2002

Entomologia Exp Applicata

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The effect of temperature on egg development of the apple sawfly Hoplocampa testudinea Klug was studied under controlled conditions. Based on a linear model describing the relationship between temperature and developmental rates a thermal threshold of 6.9 • C and a thermal constant of 85 day-degrees were established. The experimental results were used to expand and parameterise an existing phenology model to include egg development and hatching of first instar larvae. The model thus became a valuable forecasting tool not only for adult emergence and the optimal monitoring period but also for egg hatch and the best timing of control measures against first instar larvae. The model was validated by comparing predictions with independent observations on egg-laying and subsequent hatching of first instar larvae under semi-field conditions.

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The apple sawfly, Hoplocampa testudinea: Temperature effects on adult life‐span and reproduction

Cited by 11 publications

References 7 publications

Species ratio, spring emergence, population dynamics and damage of plum sawflies Hoplocampa minuta and H. flava in plum orchard

Species ratio, spring emergence, population dynamics and damage of plum sawflies Hoplocampa minuta and H. flava in plum orchard

Spatial distribution patterns of apple sawfly populations in two differently managed commercial apple orchards

The apple sawfly, Hoplocampa testudinea: egg development and forecasting of egg hatch

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