A Novel Pheromone Dispenser for Mating Disruption of the Leafminer Phyllocnistis citrella (Lepidoptera: Gracillariidae)

Mating disruption for leafrollers has been conducted on a commercial scale using a single multispecies pheromone dispenser on contiguous blocks of cherries in Central Otago for 4 years Pheromone trap and packhouse results were collected from isolated untreated (654 ha) and pheromonetreated cherry orchard areas (764 ha) in the Cromwell district In untreated cherry orchards catches of light brown apple moth (Epiphyas postvittana) were exceptionally high (38 males/trap/day) with lower catches of Planotortrix octo (025 males/ trap/day) Catches of both species were strongly disrupted in the treated areas reducing E postvittana to 00036 moths/trap/day and P octo to nil Trap catches of both species have increased steadily over 5 years (2008/09 to 20012/13) in blocks not using mating disruption Packhouse results showed that all of the fruit inspected from both treated and untreated areas were free of leafroller infestations in 2012/13 Insecticide use in the pheromonetreated areas was reduced by one application compared with the areas without pheromone

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Comparison of different pheromone traps for the capture of adults of the processionary pine moth,Thaumetopoea pityocampa(Denis and Schiffermüller) (Lepidoptera: Thaumetopoeidae), and assessment of its control with mating disruption

10.1603/ice.2016.109796 ◽

2016 ◽

Author(s):

Christos Athanassiou

Keyword(s):

Mating Disruption ◽

Thaumetopoea Pityocampa ◽

Pheromone Traps

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Mating Disruption of Pseudococcus calceolariae (Maskell) (Hemiptera, Pseudococcidae) in Fruit Crops

Insects ◽

10.3390/insects12040343 ◽

2021 ◽

Vol 12 (4) ◽

pp. 343

Author(s):

Carolina Ballesteros ◽

Alda Romero ◽

María Colomba Castro ◽

Sofía Miranda ◽

Jan Bergmann ◽

...

Keyword(s):

Visual Inspection ◽

Mating Disruption ◽

Economic Importance ◽

Fruit Crops ◽

Potential Control ◽

The Third ◽

Pseudococcus Calceolariae ◽

And Control ◽

Potential Use ◽

Control Tool

Pseudococcus calceolariae, the citrophilous mealybug, is a species of economic importance. Mating disruption (MD) is a potential control tool. During 2017–2020, trials were conducted to evaluate the potential of P. calceolariae MD in an apple and a tangerine orchard. Two pheromone doses, 6.32 g/ha (2017–2018) and 9.45 g/ha (2019–2020), were tested. The intermediate season (2018–2019) was evaluated without pheromone renewal to study the persistence of the pheromone effect. Male captures in pheromone traps, mealybug population/plant, percentage of infested fruit at harvest and mating disruption index (MDI) were recorded regularly. In both orchards, in the first season, male captures were significantly lower in MD plots compared to control plots, with an MDI > 94% in the first month after pheromone deployment. During the second season, significantly lower male captures in MD plots were still observed, with an average MDI of 80%. At the third season, male captures were again significant lower in MD than control plots shortly after pheromone applications. In both orchards, population by visual inspection and infested fruits were very low, without differences between MD and control plots. These results show the potential use of mating disruption for the control of P. calceolariae.

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Effect of Pheromone Blend Components, Sex Ratio, and Population Size on the Mating of Cadra cautella (Lepidoptera: Pyralidae)

Journal of Insect Science ◽

10.1093/jisesa/ieaa128 ◽

2020 ◽

Vol 20 (6) ◽

Author(s):

Abeysinghe Mudiyanselage Prabodha Sammani ◽

Dissanayaka Mudiyanselage Saman Kumara Dissanayaka ◽

Leanage Kanaka Wolly Wijayaratne ◽

William Robert Morrison

Keyword(s):

Sex Ratio ◽

Population Size ◽

Management Practices ◽

Mating Disruption ◽

Current Knowledge ◽

Mating Status ◽

Cadra Cautella ◽

Synthetic Chemicals ◽

Population Sizes ◽

Lepidoptera Pyralidae

Abstract The almond moth Cadra cautella (Walker), a key pest of storage facilities, is difficult to manage using synthetic chemicals. Pheromone-based management methods remain a high priority due to advantages over conventional management practices, which typically use insecticides. Cadra cautella females release a blend of pheromone including (Z, E)-9,12-tetradecadienyl acetate (ZETA) and (Z)-9-tetradecadien-1-yl acetate (ZTA). The effect of these components on mating of C. cautella and how response varies with the population density and sex ratio remain unknown. In this study, the mating status of C. cautella was studied inside mating cages under different ratios of ZETA and ZTA diluted in hexane and at different population sizes either with equal or unequal sex ratio. The lowest percentage of mated females (highest mating disruption [MD] effects), corresponding to roughly 12.5%, was produced by a 5:1 and 3.3:1 ratio of ZETA:ZTA. Populations with equal sex ratio showed the lowest percentage of mated females, at 20% and 12.5% under lower and higher density, respectively. The next lowest percentage of mated females was produced when the sex ratio was set to 1: 2 and 2:1 male:female, with just 25% and 22.5% of moths mated, respectively. This study shows that mating status of C. cautella is influenced by ZETA:ZTA ratio, sex ratio, and population size. This current knowledge would have useful implications for mating disruption programs.

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Inhibitory Copulation Effect of Vibrational Rival Female Signals of Three Stink Bug Species as a Tool for Mating Disruption

Insects ◽

10.3390/insects12020177 ◽

2021 ◽

Vol 12 (2) ◽

pp. 177

Author(s):

Aline Moreira Dias ◽

Miguel Borges ◽

Maria Carolina Blassioli Moraes ◽

Matheus Lorran Figueira Coelho ◽

Andrej Čokl ◽

...

Keyword(s):

Pest Management ◽

Mating Behavior ◽

Mating Disruption ◽

Management Strategies ◽

Stink Bug ◽

Stink Bugs ◽

Vibratory Communication ◽

Communication Signals ◽

Long Duration ◽

Bean Plants

Stink bugs are major pests in diverse crops around the world. Pest management strategies based on insect behavioral manipulation could help to develop biorational management strategies of stink bugs. Insect mating disruption using vibratory signals is an approach with high potential for pest management. The objective of this work was to investigate the effect of conspecific female rival signals on the mating behavior and copulation of three stink bug species to establish their potential for mating disruption. Previously recorded female rival signals were played back to bean plants where pairs of the Neotropical brown stink bug, Euschistus heros, and two green stink bugs, Chinavia ubica and Chinavia impicticornis were placed. Vibratory communication and mating behavior were recorded for each pair throughout the experimental time (20 min). Female rival signals show a disrupting effect on the reproductive behavior of three conspecific investigated stink bug species. This effect was more clearly expressed in E. heros and C. ubica than in C. impicticornis. The likelihood of copulating in pairs placed on control plants, without rival signals, increased 29.41 times in E. heros, 4.6 times in C. ubica and 1.71 times in C. impicticornis. However, in the last case, the effect of female rivalry signals in copulation was not significant. The effect of mating disruption of female rival signals of the three stink bug species may originate from the observed reduction in specific vibratory communication signals emitted, which influences the duet formation and further development of different phases of mating behavior. Our results suggest that female rival signals have potential for application in manipulation and disruption of mating behavior of stink bugs. Further work needs to focus on the effects of female rival signals used in long duration experiments and also their interactions with chemical communication of stink bugs.

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