Effect of host plants on the development, survivorship and reproduction of <i><scp>Grapholita molesta</scp></i> (Lepidoptera: Tortricidae) under laboratory conditions

Yang, Xiaofan; Feng, Fan; Ma, Chun‐Sen; Wang, Chong; Wei, Guoshu

doi:10.1111/aen.12204

Cited by 14 publications

(21 citation statements)

References 23 publications

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“…), apricots ( Prunus armeniaca L.), apples ( Malus domestica Borkh.) and pears ( Pyrus communis L.) [ 1 ]. In many countries, peach and nectarine orchards are typically managed under Integrated Fruit Production (IFP) plans, which include the use of sex pheromones for the Mating Disruption (MD) of G. molesta , together with some supplemental insecticidal applications according to the forecasting models for pest occurrence.…”

Section: Introductionmentioning

confidence: 99%

Improved Monitoring of Grapholita molesta (Lepidoptera: Tortricidae) in Stone Fruit Orchards with a Pheromone-Kairomone Combination Lure

Preti

Knight²,

Angeli

2020

Insects

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Monitoring oriental fruit moth Grapholita molesta Busck (Lepidoptera: Tortricidae), populations based on counts in sex pheromone-baited traps within sex pheromone-treated orchards for mating disruption (MD) is challenging since male orientation to traps is disrupted. In this study, we evaluated a new commercial pheromone–kairomone combination lure for G. molesta (Pherocon® OFM Combo™ Dual™), which combines the G. molesta and Cydia pomonella L. sex pheromones with a blend of acetic acid and terpinyl acetate. Trap comparisons were performed in 33 trials in peach and nectarine orchards under MD (24) or non-MD (9) during the 2018–2019 period in Italy. Male and total moth captures in traps baited with the combination lure were significantly greater than in traps with G. molesta pheromone in both years and across both pheromone treatments. The proportion of females in the total moth captures using the combination lure averaged ca. 7% across all trials. The by-catch of non-targets, i.e., Apis mellifera L., was low in traps baited either with the combination and the sex pheromone lure, while trap color (white) affected the capture of beneficials but not of the target pest. Our study proves that this combination lure can improve the monitoring and management for G. molesta in stone fruits. New studies are needed to define action thresholds to trigger supplemental control methods to MD. Secondly, female-based monitoring lures should be further developed to improve management strategies.

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Section: Introductionmentioning

confidence: 99%

Improved Monitoring of Grapholita molesta (Lepidoptera: Tortricidae) in Stone Fruit Orchards with a Pheromone-Kairomone Combination Lure

Preti

Knight²,

Angeli

2020

Insects

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“…Grapholita molesta used in this study were originally collected in August 2012, in a honey peach orchard in Shenzhou (38.0157°N, 115.5432°E), Hebei, China. The colony was mass-reared on Fuji apples through three instars and then transferred to an artificial diet (Yang et al, 2016a) in the laboratory at 26 AE 1°C, 70 AE 5% r.h., and L15:D9 photoperiod (scotophase lasting from 20:00-05:00 hours). Adults emerged individually in glass tubes (1.8 cm diameter, 8 cm high) without access to food.…”

Section: Insectsmentioning

confidence: 99%

Oviposition preferences in Grapholita molesta: the relative importance of visual and olfactory cues

Yang

Fan

Liu

et al. 2019

Entomologia Exp Applicata

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The oriental fruit moth, Grapholita molesta (Busck) (Lepidoptera: Tortricidae), is a major pest of fruit trees worldwide. Females oviposit on the young leaves of peach [Prunus persica (L.) Batsch (Rosaceae)] shoots at twilight, when light intensity changes markedly. Previous researches have shown that the oviposition response of this moth is guided particularly by visual and olfactory cues from host plants. However, the relative importance of visual and olfactory cues in their oviposition preference is largely unknown. As a crepuscular moth, how do choices change as light intensity drops rapidly from day to night? In the present study, through two‐choice behavioural experiments, the oviposition responses of G. molesta to visual and olfactory cues (alone or in combination) from peach shoots were tested at four light intensities ranging from daylight to starlight. Grapholita molesta showed similar oviposition responses to plant cues under 1 000, 100, 1 and 0.01 mW m−2 illumination. Olfactory cues from peach shoots attracted significantly more oviposition than the negative control, whereas visual cues alone did not. Furthermore, olfactory cues were more attractive than visual cues, and no significant interaction was observed between the responses to the two cues. Our findings indicate that G. molesta females mainly rely on olfactory cues to recognize oviposition sites, regardless of differences in light intensity. These results do not provide evidence for attraction to visual cues, but the possibility that the brightness of leaves might be used to guide oviposition is discussed.

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“…Different pests are known to cause damage to different parts of plants and cause harm during different periods of the year. For example, apple aphids ( Aphis pomi ) are mainly harmful to roots or young shoots and young leaves at the upper and lower parts of the plant, whereas Oriental fruit moths (Grapholita molesta) mainly harm fruit stems and fruits and cause fruit drop . Apple leaf roller moth ( Pandemis heparana ) and apple leaf miners ( Lyonetia clerkella ) damage trees by feeding on upper young or lower mature leaves .…”

Section: Introductionmentioning

confidence: 99%

Spatial and temporal distribution, degradation, and metabolism of three neonicotinoid insecticides on different parts, especially pests' target feeding parts of apple tree

Dong

Chen

et al. 2020

Pest Management Science

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BACKGROUND: Neonicotinoid insecticides (NIs) have been recently banned in some countries because of increased pest resistance and deleterious risks to non-target organisms. Recent studies considered all parts of crops as a whole part in plant protection. However, there are few reports focused on the distribution and metabolic trends of NIs on target feeding sites of different pests in apple orchards. RESULTS:The spatial and temporal distribution, absorption, degradation, and metabolism of three NIs, imidacloprid, acetamiprid, and thiamethoxam, on different parts of apple trees were studied under foliar spray and root irrigation treatments. In the spray treatment, the initial average concentration ratios (TCRs) were 31.6% for lower shoots, 23.3% for upper leaves, 23.2% for upper shoots, 21.0% for lower leaves, and 0.5% and 0.4% for upper and lower fruits, respectively. The average half-lives of the three NIs were 2.9 days for shoots, 7.4 days for leaves, and 10.8 days for fruits. The degradation rate of shoots was 2.5 times that of leaves, and 3.6 times that of fruits. Imidacloprid olefin and N-methyl acetamiprid were two of the main metabolites. In the root treatment, both roots and soils had high TCRs during the whole sampling period. Only imidacloprid was transmitted to above-ground parts of the plants, with TCRs of 0.38-50.94%.CONCLUSION: This study found significant differences in spatial and temporal distribution, degradation, metabolism, and trends of NIs on different pest target sites of apple trees. The data obtained may help promote scientific control of target pests and evaluation of safety for non-target species in orchards.

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Effect of host plants on the development, survivorship and reproduction of Grapholita molesta (Lepidoptera: Tortricidae) under laboratory conditions

Cited by 14 publications

References 23 publications

Improved Monitoring of Grapholita molesta (Lepidoptera: Tortricidae) in Stone Fruit Orchards with a Pheromone-Kairomone Combination Lure

Improved Monitoring of Grapholita molesta (Lepidoptera: Tortricidae) in Stone Fruit Orchards with a Pheromone-Kairomone Combination Lure

Oviposition preferences in Grapholita molesta: the relative importance of visual and olfactory cues

Spatial and temporal distribution, degradation, and metabolism of three neonicotinoid insecticides on different parts, especially pests' target feeding parts of apple tree

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