Quality degradation of industrial hemp due to infestation by
            <i>Halyomorpha halys</i>
            (Hemiptera: Pentatomidae)

Andreadis, Stefanos S.; Moysiadis, Theodoros; Gogolashvili, Nikoloz E.; Koutsogeorgiou, Eleni I.; Fifis, Georgios T.; Tsaliki, Eleni

doi:10.1080/09670874.2022.2089769

Cited by 5 publications

(2 citation statements)

References 32 publications

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“…In conclusion, our findings confirm the incidence of a facultative reproductive diapause of females of H. halys in N. Greece and provide valuable information on the phenology and reproductive physiology of this pest in this region. Despite its widespread presence in our country [ 6 , 7 , 24 , 43 ], little research has been conducted to investigate the biological parameters of this insect. Our results suggest that overwintering females of H. halys do not initiate egg laying right away once they leave their overwintering sites, but rather need some additional time for diapause termination in order to mature reproductively.…”

Section: Discussionmentioning

confidence: 99%

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Females of Halyomorpha halys (Hemiptera: Pentatomidae) Experience a Facultative Reproductive Diapause in Northern Greece

Koutsogeorgiou

Kouloussis

Koveos

et al. 2022

Insects

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Halyomorpha halys (Stål) (Hemiptera: Pentatomidae) is a native pest of East Asia that overwinters as an adult in natural and human-made structures. Adult emergence from overwintering sites starts in spring, whereas females produce offspring in early summer on host plants, where most feeding occurs. In this study, we investigated the reproductive physiology of overwintering females of H. halys in Northern Greece, by determining the duration of the preoviposition period and fecundity of individuals that were left to overwinter in natural conditions and were subsequently transferred to chambers with standard conditions monthly, from December 2020 to March 2021. According to our results, overwintering H. halys females do not initiate egg laying once they emerge from overwintering sites, but rather need some additional time to exit diapause and mature reproductively. The mean preoviposition period of overwintering females that were transferred from their overwintering sites to the chambers in December 2020 was 29.0 days, which was significantly longer by 8.3 days than that of females that overwintered until March 2021, and by 13.2 days than the control (26 °C, 60% RH and a 16:8 h light : dark photoperiod). No significant difference among the average number of eggs per egg mass laid by overwintering individuals brought in the chambers in different time intervals and the laboratory colony was observed. However, females that were left to overwinter until March laid a significantly higher number of eggs in total, compared to the ones whose overwintering was disrupted in February. Based on our findings, overwintering females of H. halys experience a facultative reproductive diapause in Northern Greece. Our study was the first to determine the occurrence of diapause of H. halys in N. Greece and our findings could be very valuable for assessing the damage of this pest to early-season crops and designing successful management practices.

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Section: Discussionmentioning

confidence: 99%

“…The laboratory colony was maintained as described by Andreadis et al [ 24 ]. Adults and nymphs were collected from abandoned buildings and fields in central Macedonia.…”

Section: Methodsmentioning

confidence: 99%