scholarly journals Mating patterns of the European grapevine moth,Lobesia botrana(Lepidoptera: Tortricidae) in sympatric and allopatric populations

2016 ◽  
Author(s):  
Karen Muller ◽  
Denis Thiéry ◽  
Lionel Delbac ◽  
Jérôme Moreau
Keyword(s):  
Lobesia Botrana ◽  
European Grapevine Moth ◽  
Mating Patterns ◽  
Allopatric Populations ◽  
Grapevine Moth

scholarly journals Grape variety affects larval performance and also female reproductive performance of the European grapevine moth Lobesia botrana (Lepidoptera: Tortricidae)

2006 ◽  
Vol 96 (2) ◽  
pp. 205-212 ◽  
Author(s):  
J. Moreau ◽  
B. Benrey ◽  
D. Thiéry
Keyword(s):  
Host Plant ◽  
Adult Emergence ◽  
Lobesia Botrana ◽  
Larval Performance ◽  
European Grapevine Moth ◽  
Wild Grape ◽  
Larval Host ◽  
Fitness Index ◽  
Grapevine Moth

AbstractFor insect herbivores, the quality of the larval host plant is a key determinant of fitness. Therefore, insect populations are supposed to be positively correlated with the nutritional quality of their host plant. This study aimed to determine if and how different varieties of grapes (including the wild grape Lambrusque) affect both larval and adult performance of the polyphagous European grapevine moth Lobesia botrana (Denis & Schiffermüller). Significant differences were found in larval development time, but not in pupal mass, adult emergence rate, or sex ratio. Although the fecundity of females is not different among varieties, females fed on some varieties produced eggs of different sizes which are correlated to their fertility. Thus, females adapt resource allocation to eggs depending on their diet as larvae. Using a fitness index, the average reproductive output was found to be highest for females reared on cv. Chardonnay. Females reared on wild grape produced a fitness index identical to the cultivated grapes. However, Lambrusque and Gewurztraminer separate themselves from the cultivated varieties according to our discriminant analyses. It is emphasized, through this study, that cultivars fed on by larvae should be considered in the population dynamics of L. botrana and that egg number is insufficient to determine host plant quality.

Day/night variations of feeding and immune activities in larvae of the European grapevine moth, Lobesia botrana

2021 ◽  
Author(s):  
Corentin Iltis ◽  
Jérôme Moreau ◽  
Guillaume Gamb ◽  
Corentin Manière ◽  
Céline Boidin-Wichlacz ◽  
...  
Keyword(s):  
Lobesia Botrana ◽  
European Grapevine Moth ◽  
Grapevine Moth

Larval intraspecific competition for food in the European grapevine moth Lobesia botrana

2014 ◽  
Vol 104 (4) ◽  
pp. 517-524 ◽  
Author(s):  
D. Thiéry ◽  
K. Monceau ◽  
J. Moreau
Keyword(s):  
Life History ◽  
Intraspecific Competition ◽  
Life History Traits ◽  
Larval Mortality ◽  
Lobesia Botrana ◽  
Reproductive Capacity ◽  
Strong Increase ◽  
European Grapevine Moth ◽  
Grapevine Moth ◽  
Larval Crowding

AbstractEffective pest management with lower amounts of pesticides relies on accurate prediction of insect pest growth rates. Knowledge of the factors governing this trait and the resulting fitness of individuals is thus necessary to refine predictions and make suitable decisions in crop protection. The European grapevine moth, Lobesia botrana, the major pest of grapes in Europe, is responsible for huge economic losses. Larvae very rarely leave the grape bunch on which they were oviposited and thus cannot avoid intraspecific competition. In this study, we determined the impact of intraspecific competition during the larval stage on development and adult fitness in this species. This was tested by rearing different numbers of larvae on an artificial diet and measuring developmental and reproductive life history traits. We found that intraspecific competition during larval development has a slight impact on the fitness of L. botrana. The principal finding of this work is that larval density has little effect on the life history traits of survivors. Thus, the timing of eclosion, duration of subsequent oviposition, fecundity appears to be more uniform in L. botrana than in other species. The main effect of larval crowding was a strong increase of larval mortality at high densities whereas the probability of emergence, sex ratio, pupal mass, fecundity and longevity of mated females were not affected by larval crowding. Owing to increased larval mortality at high larval densities, we hypothesized that mortality of larvae at high densities provided better access to food for the survivors with the result that more food was available per capita and there were no effect on fitness of survivors. From our results, larval crowding alters the reproductive capacity of this pest less than expected but this single factor should now be tested in interaction with limited resources in the wild.

scholarly journals Remote Monitoring of European Grapevine Moth, Lobesia botrana (Lepidoptera: Tortricidae) Population Using Camera-Based Pheromone Traps in Vineyards

2019 ◽  
Vol 7 (4) ◽  
pp. 652 ◽  
Author(s):  
Levent Ünlü ◽  
Bayram Akdemir ◽  
Ekrem Ögür ◽  
İnci Şahin
Keyword(s):  
Remote Monitoring ◽  
Pheromone Trap ◽  
Lobesia Botrana ◽  
Population Development ◽  
Pheromone Traps ◽  
Bud Burst ◽  
Field Observations ◽  
Pest Population ◽  
European Grapevine Moth ◽  
Grapevine Moth

This study presents a new sex pheromone trap for European Grapevine Moth, Lobesia botrana, to monitor its field population without direct field observations in Turkey. The study was conducted in Hadim and Taşkent (Konya) districts in 2016. Viticulture has been carried out for many years in both districts where the maximum vineyards are located. Due to the distance to the center and the difficulty of transportation to these districts, there has not been conducted any detailed studies until today. Therefore, this study about L. botrana, which is harmful in these vineyards, was planned. In order to monitor the pest population, the cameras were placed onto the pheromone traps, and it was tried to get information about the population development of the pest via internet without going to the vineyards. For this purpose, four locations in Hadim and one location in Taşkent district were selected and one pheromone trap was established in each location before the bud burst in vineyards. The camera was placed on each pheromone trap and was linked with vMEyeIPC program via internet. The time of first adult flight and the population development of adult L. botrana were determined. The first adult flight began at the beginning (7/4/2016) and in the middle of April (15/4/2016) in Hadim and Taşkent, respectively. The number of offspring and the maximum number of pest individuals caught in traps were recorded in vineyards in both districts.

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