Age-Specific Life Table Parameters and Survivorship of an Iranian Population of the Codling Moth (Lepidoptera: Tortricidae) at Different Constant Temperatures

Aghdam, Hossein Ranjbar; Fathipour, Yaghoub; Kontodimas, D. C.; Radjabi, G.; Rezapanah, Mohammadreza

doi:10.1603/008.102.0205

Cited by 23 publications

(14 citation statements)

References 27 publications

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“…As the sex ratio of codling moth is 1:1, absolute density of female codling moth equals that of male codling moth. The mean number of eggs produced and laid by codling moth females varies slightly with temperature ( Agndam et al 2009 ) but can be safely estimated at 50 ( Geier 1963 and references therein). However, only about 33% of eggs laid in the field produce larvae that successfully attack apples ( Geier 1963 ).…”

Section: Discussionmentioning

confidence: 99%

Maximizing Information Yield From Pheromone-Baited Monitoring Traps: Estimating Plume Reach, Trapping Radius, and Absolute Density ofCydia pomonella(Lepidoptera: Tortricidae) in Michigan Apple

Adams¹,

Schenker²,

McGhee³

et al. 2017

J Econ Entomol

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Novel methods of data analysis were used to interpret codling moth (Cydia pomonella) catch data from central-trap, multiple-release experiments using a standard codlemone-baited monitoring trap in commercial apple orchards not under mating disruption. The main objectives were to determine consistency and reliability for measures of: 1) the trapping radius, composed of the trap’s behaviorally effective plume reach and the maximum dispersive distance of a responder population; and 2) the proportion of the population present in the trapping area that is caught. Two moth release designs were used: 1) moth releases at regular intervals in the four cardinal directions, and 2) evenly distributed moth releases across entire approximately 18-ha orchard blocks using both high and low codling moth populations. For both release designs, at high populations, the mean proportion catch was 0.01, and for the even release of low populations, that value was approximately 0.02. Mean maximum dispersive distance for released codling moth males was approximately 260 m. Behaviorally effective plume reach for the standard codling moth trap was < 5 m, and total trapping area for a single trap was approximately 21 ha. These estimates were consistent across three growing seasons and are supported by extraordinarily high replication for this type of field experiment. Knowing the trapping area and mean proportion caught, catch number per single monitoring trap can be translated into absolute pest density using the equation: males per trapping area = catch per trapping area/proportion caught. Thus, catches of 1, 3, 10, and 30 codling moth males per trap translate to approximately 5, 14, 48, and 143 males/ha, respectively, and reflect equal densities of females, because the codling moth sex ratio is 1:1. Combined with life-table data on codling moth fecundity and mortality, along with data on crop yield per trapping area, this fundamental knowledge of how to interpret catch numbers will enable pest managers to make considerably more precise projections of damage and therefore more precise and reliable decisions on whether insecticide applications are justified. The principles and methods established here for estimating absolute codling moth density may be broadly applicable to pests generally and thereby could set a new standard for integrated pest management decisions based on trapping.

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Section: Discussionmentioning

confidence: 99%

Maximizing Information Yield From Pheromone-Baited Monitoring Traps: Estimating Plume Reach, Trapping Radius, and Absolute Density ofCydia pomonella(Lepidoptera: Tortricidae) in Michigan Apple

Adams¹,

Schenker²,

McGhee³

et al. 2017

J Econ Entomol

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“…Survival pattern was accessed by the curves that describe the age-specific survivorship ( l x ) with days of the adults after exposed heat shock [33]. The effects of heat-shock treatments on longevity, reproductive parameters in parent adults, and fitness parameters in F 1 progeny were tested by one-way analysis of variance (ANOVA), and means were compared using Tukey's test ( P <0.05).…”

Section: Methodsmentioning

confidence: 99%

Tolerance to High Temperature Extremes in an Invasive Lace Bug, Corythucha ciliata (Hemiptera: Tingidae), in Subtropical China

Gao

Zhou

et al. 2013

PLoS ONE

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Biological invasions are predicted to be more frequent as climate change is increasing its positive impact on the prevalence of invasive exotic species. Success of insect invaders in different temperature zones is closely related to their tolerance to temperature extremes. In this study, we used an exotic lace bug (Corythucha ciliata) as the study organism to address the hypotheses that an insect species invading a subtropical zone from temperate regions has a high capacity to survive and adapt to high temperatures, and that its thermal tolerance plays an important role in determining its seasonal abundance and geographic distribution. To test these hypotheses, the effects of heat shock on the survival and reproduction of C. ciliata adults were assessed in the laboratory. Adults were exposed to 26 (control), 35, 37, 39, 41, 43, and 45°C for 2 h, and then were transferred to 26°C. Heat-shock temperatures ranging from 35 to 41°C did not significantly affect survival pattern, longevity, and fecundity of adults, but heat shock at 43 and 45°C significantly reduced these traits. Exposing parent females to heat-shock treatments from 35 to 41°C did not significantly affect the hatching rate of their eggs, survival of the nymphs, and the proportion of female F 1 progeny, while no progeny were produced with treatments of 43 and 45°C. The results indicate that C. ciliata can tolerate high temperatures less than 41°C, which may contribute to its expansion into the lower latitudes in China where its hosts (Platanus trees) are widely planted. Our findings have important implications for predicting seasonal abundance and understanding invasion mechanisms of this important urban invader under climate change.

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“…For C. pomonella Aghdam et al. () reported the highest net reproductive rate at 27 °C. Again, the lower temperature optimum of G. lobarzewskii is consistent with its preference for the cooler pre‐alpine areas (Sauter & Wildbolz, ).…”

Section: Discussionmentioning

confidence: 96%

Temperature effects on reproduction and adult lifespan of the smaller fruit tortrix, Grapholita lobarzewskii

Graf

Höpli

Höhn

2014

Entomologia Exp Applicata

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The effects of temperature on adult lifespan, reproduction, and oviposition behaviour of Grapholita lobarzewskii Nowicki (Lepidoptera: Tortricidae) were studied under controlled and semi‐field conditions to improve the basis for phenological forecasting. The average female lifespan ranged from 18.9 days at 25.1 °C to 65.3 days at 11.0 °C. For adult female ageing, a lower thermal threshold (THR) of 8.6 °C and a thermal constant (K) of 298 degree days (dd) were established. At constant temperatures, fecundity ranged from 0.3 eggs per female at 11.0 °C to 107 eggs per female at 21.2 °C. The highest fecundity of 127 eggs per female was observed at fluctuating temperatures. Oviposition lasted on average 350 dd, but 50% of the eggs were laid within the first 100 dd after adult emergence. Grapholita lobarzewskii had a distinct circadian rhythm for oviposition. Females began to lay eggs at ca. 16:00 hours and ceased at 24:00 hours with the peak occurring generally at 19:00 hours. Females reacted very sensitively to sudden temperature changes. A temperature drop of 3.1 °C could cause a 1‐day interruption of oviposition.

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Age-Specific Life Table Parameters and Survivorship of an Iranian Population of the Codling Moth (Lepidoptera: Tortricidae) at Different Constant Temperatures

Cited by 23 publications

References 27 publications

Maximizing Information Yield From Pheromone-Baited Monitoring Traps: Estimating Plume Reach, Trapping Radius, and Absolute Density ofCydia pomonella(Lepidoptera: Tortricidae) in Michigan Apple

Maximizing Information Yield From Pheromone-Baited Monitoring Traps: Estimating Plume Reach, Trapping Radius, and Absolute Density ofCydia pomonella(Lepidoptera: Tortricidae) in Michigan Apple

Tolerance to High Temperature Extremes in an Invasive Lace Bug, Corythucha ciliata (Hemiptera: Tingidae), in Subtropical China

Temperature effects on reproduction and adult lifespan of the smaller fruit tortrix, Grapholita lobarzewskii

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