Identificaton of the Alarm and Sex Pheromones of the Leaf‑Footed Bug, Leptoglossus zonatus (Heteroptera: Coreidae)

Inoue, Katia M.; Vidal, Diogo M.; Saad, Emir B.; Martins, Camila B. C.; Zarbin, Paulo H. G.

doi:10.21577/0103-5053.20180238

Cited by 8 publications

(8 citation statements)

References 33 publications

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“…were greater contribution on the distinction of male and female eggs during E 1 and E 3 ( Table S2 ). Hexanal showed a significant difference between male and female Leptolossus zobatus ( Inoue et al., 2019 ) and heptanal could reduce its sensitivity to the peripheral and central olfactory level independently of mating status ( Deisig et al., 2012 ). Hexanal, heptanal, and nonanal were also reported have the potential to attract female T. infestans ( Fontan et al., 2002 ).…”

Section: Resultsmentioning

confidence: 99%

Nondestructive characterization gender of chicken eggs by odor using SPME/GC-MS coupled with chemometrics

Xiang¹,

gan²,

Jin³

et al. 2022

Poultry Science

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It's a difficult task for researchers to identify the gender of chicken eggs by nondestructive approach in the early of incubation, which not only could reduce the cost of incubation, but also could improve the welfare of chicks. Therefore, SPME/GC-MS has been applied to investigate its potential as a nondestructive tool for characterizing the differences of odor between male and female chicken eggs during early of incubation and even before hatch. The results showed that more volatiles were found in female White leghorn eggs during early of incubation and 6,10-dimethyl-5,9-undecadien-2-one, 6-methyl-5-hepten-2-one, nonanal, decanal, octanal, 2-nonen-1-ol, etc. were important for the distinction of male and female White leghorn eggs during E 1 -E 9 of incubation. 2-ethyl-1-hexanol; octanal, nonanal, 2,2,4-trimethyl-3-carboxyisopropyl pentanoic acid isobutyl ester; 2-nonen-1-ol, cyclopropanecarboxamide, heptadecane were correlated with gender of unhatched White leghorn, Hy-line brown and Jing fen eggs, respectively. Moreover, sex-related volatiles have been strongly influenced by incubation process and egg breed, and to be related to steroid hormone biosynthesis. What's more, this study enables us to develop a new visual for ovo sexing of chicken eggs and advances our understanding of the biological significance behind volatiles emitted from chicken eggs.

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Section: Resultsmentioning

confidence: 99%

Nondestructive characterization gender of chicken eggs by odor using SPME/GC-MS coupled with chemometrics

Xiang¹,

gan²,

Jin³

et al. 2022

Poultry Science

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“…Current management strategies for Leptoglossus are limited, in part, because of inadequate monitoring strategies [19]. Pheromones are known to play a role in the reproduction and aggregation of both L. clypealis and L. zonatus [20,21,22]. However, they are not yet commercially available for monitoring, and while some of the pheromones have been characterized and synthesized, no field applications have been developed.…”

Section: Introductionmentioning

confidence: 99%

Seasonal Dynamics of the Leaffooted Bug Leptoglossus zonatus and Its Implications for Control in Almonds and Pistachios

Daane

Yokota

Wilson

2019

Insects

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Leptoglossus zonatus is a polyphagous pest found throughout much of the Western Hemisphere. In California, L. zonatus attacks almond, pistachio, pomegranate, and walnut crops, but the seasonal use of and economic damage to these crops varies. To better understand the seasonal changes of L. zonatus populations and to improve monitoring programs in California’s San Joaquin Valley, we caged overwintering adult males and females and then followed the resulting population dynamics over a one-year period. There were three generations over the one-year period, although eggs, nymphs, and adults overlapped among successive generations. From an initial 75 overwintering adult females, there were 1214 egg strands, 16,692 nymphs, and 4900 adults recorded during the one-year period. Depending on the generation, the number of nymphs per egg strand ranged from 11.3 to 14.3; the sex ratio was close to 1:1 with the exception of one female-biased cage; and nymph mortality ranged from 22.0% to 39.5%. Adult females isolated from each generation produced 2.4–5.1 egg strands per female that totaled 41.7–61.7 eggs per female with a 67.1–86.8% successful hatch rate. We find that the adult is the overwintering stage, as more adults (without food provisions) survived the winter compared to medium-sized or large-sized nymphs provided with both food and water. The results are discussed with respect to the development of L. zonatus control and monitoring programs for California’s multi-billion-dollar (US) nut crops.

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“…Damage is significantly higher from the larger bug species, L. zonatus , than from L. clypealis . Currently, there are few control options for these insects, but investigations are underway of semiochemicals and other attractants which might be used in traps or lures to monitor or control these insects [7,36,37,38,39]. This study provides evidence that feeding by L. clypealis and L. zonatus can result in significant damage to almonds.…”

Section: Discussionmentioning

confidence: 88%

Assessing Feeding Damage from Two Leaffooted Bugs, Leptoglossus clypealis Heidemann and Leptoglossus zonatus (Dallas) (Hemiptera: Coreidae), on Four Almond Varieties

Joyce

Barman

Doll

et al. 2019

Insects

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Leaffooted bugs (Leptoglossus spp; Hemiptera: Coreidae) are phytophagous insects native to the Western Hemisphere. In California, Leptoglossus clypealis and Leptoglossus zonatus are occasional pests on almonds. Early season feeding by L. clypealis and L. zonatus leads to almond drop, while late season feeding results in strikes on kernels, kernel necrosis, and shriveled kernels. A field cage study was conducted to assess feeding damage associated with L. clypealis and L. zonatus on four almond varieties, Nonpareil, Fritz, Monterey, and Carmel. The objectives were to determine whether leaffooted bugs caused significant almond drop, to pinpoint when the almond was vulnerable, and to determine the final damage at harvest. Branches with ~20 almonds were caged and used to compare almond drop and final damage in four treatments: (1) control branches, (2) mechanically punctured almonds, (3) adult Leptoglossus clypealis, and (4) adult Leptoglossus zonatus. Replicates were set up for eight weeks during two seasons. Early season feeding resulted in higher almond drop than late season, and L. zonatus resulted in greater drop than L. clypealis. The almond hull width of the four varieties in the study did not influence susceptibility to feeding damage. The final damage assessment at harvest found significant levels of kernel strikes, kernel necrosis, and shriveled almonds in bug feeding cages, with higher levels attributed to L. zonatus than L. clypealis. Further research is warranted to develop an Integrated Pest Management program with reduced risk controls for L. zonatus.

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Identificaton of the Alarm and Sex Pheromones of the Leaf‑Footed Bug, Leptoglossus zonatus (Heteroptera: Coreidae)

Cited by 8 publications

References 33 publications

Nondestructive characterization gender of chicken eggs by odor using SPME/GC-MS coupled with chemometrics

Nondestructive characterization gender of chicken eggs by odor using SPME/GC-MS coupled with chemometrics

Seasonal Dynamics of the Leaffooted Bug Leptoglossus zonatus and Its Implications for Control in Almonds and Pistachios

Assessing Feeding Damage from Two Leaffooted Bugs, Leptoglossus clypealis Heidemann and Leptoglossus zonatus (Dallas) (Hemiptera: Coreidae), on Four Almond Varieties

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