Development and fecundity of Trissolcus japonicus on fertilized and unfertilized eggs of the brown marmorated stink bug, Halyomorpha halys

Yang, Shiyong; Zhan, Hao; Zhang, Feng; Babendreier, D.; Zhong, Yongzhi; Lou, Qiaozhe; Zhong, Yijiang; Zhang, Jinping

doi:10.1007/s10340-018-0998-5

Cited by 19 publications

(37 citation statements)

References 38 publications

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“…Our results showed that while the placement of viable H. halys egg masses at a relatively high average temperature (22.9ºC) for 4-7 days had a negative impact on parasitism levels and fitness parameters of emerging parasitoids, these reductions in parasitoid emergence and fitness were not observed for refrigerated eggs or in either treatment at a lower average temperature (13.4ºC). The decrease in T. japonicus emergence and body weight and the increase in development time with increasing physiological age of viable H. halys eggs is in agreement with results from other studies (Qiu 2007;Yang et al 2018). Since the H. halys embryo is developing in untreated eggs (and this progresses faster at warmer temperatures), host resources and quality for immature parasitoids are likely declining (Barrett and Schmidt 1991;Vinson 2010;Skillman et al 2017).…”

Section: Applications For Field Monitoringsupporting

confidence: 89%

“…Since the H. halys embryo is developing in untreated eggs (and this progresses faster at warmer temperatures), host resources and quality for immature parasitoids are likely declining (Barrett and Schmidt 1991;Vinson 2010;Skillman et al 2017). On the other hand, eggs that have been rendered non-viable with refrigeration before nymph development progresses do not decline in quality over time (within the timespan we tested), similar to what has been found for unfertilized H. halys eggs (Yang et al 2018). This is in contrast to -80ºC frozen egg masses, which are known to rapidly decline in quality for T. japonicus after removal from the freezer (McIntosh et al 2019).…”

Section: Applications For Field Monitoringsupporting

confidence: 80%

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An effective cold storage method for stockpilingHalyomorpha halyseggs for field surveys and laboratory rearing ofTrissolcus japonicus

Wong

Walz

Oscienny

et al. 2020

Preprint

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An effective stockpiling method for egg masses of the invasive brown marmorated stink bug (Halyomorpha halys [Stål]; Hemiptera: Pentatomidae) would be useful for rearing and field studies of its egg parasitoid Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae). The current method of stockpiling H. halys egg masses at sub-zero temperatures has lethal and sublethal fitness consequences for T. japonicus. We show that parasitoid emergence from egg masses refrigerated at 8°C for up to two months before parasitism is higher than from frozen egg masses and usually has minimal or no sublethal fitness effects (sex ratio, development time, activity, fecundity, longevity, and weight) on emerging T. japonicus. Only after two months of host egg refrigeration did the emergence of T. japonicus begin to decrease significantly (by 9.6% relative to untreated viable egg masses), whereas egg masses previously frozen at -80°C had a 58.8% reduction in parasitoid emergence after 14 days of storage. Refrigerated egg masses that were subsequently exposed to average field temperatures (warm: 22.9°C; cool: 13.2°C) were still suitable for T. japonicus parasitism after 7 days, while viable egg masses exposed to warm temperatures for 7 days before parasitism had 24.1% lower parasitoid emergence. Our results demonstrate that refrigeration at 8°C, while resulting in complete mortality of H. halys embryos after 10 days, are more suitable for T. japonicus parasitism than those stored at sub-zero temperatures. The quantity and quality of H. halys eggs that can be stockpiled with this method could facilitate T. japonicus laboratory colony maintenance, field monitoring, and releases.

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Section: Applications For Field Monitoringsupporting

confidence: 89%

Section: Applications For Field Monitoringsupporting

confidence: 80%

An effective cold storage method for stockpilingHalyomorpha halyseggs for field surveys and laboratory rearing ofTrissolcus japonicus

Wong

Walz

Oscienny

et al. 2020

Preprint

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“…Biological observations of T. japonicus and T. mitsukurii under laboratory conditions have been recorded by various authors [ 16 , 17 , 27 , 28 , 29 ]. Both species are able to parasitize an entire H. halys egg mass (generally 28 eggs/mass) within few hours of exposure under laboratory conditions [ 14 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Rearing Trissolcus japonicus and Trissolcus mitsukurii for Biological Control of Halyomorpha halys

Peverieri

Dieckhoff²,

Giovannini

et al. 2020

Insects

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Halyomorpha halys is a severe agricultural pest of Asian origin that has invaded many countries throughout the world. Pesticides are currently the favored control methods, but as a consequence of their frequent use, often disrupt Integrated Pest Management. Biological control with egg parasitoids is seen as the most promising control method over the long-term. Knowledge of the reproductive biology under laboratory conditions of the most effective candidates (Trissolcus japonicus and Trissolcus mitsukurii) for optimizing production for field releases is strongly needed. Rearing of these egg parasitoids was tested by offering three different host supply regimes using new emerged females and aged, host-deprived females in different combinations. Results showed a mean progeny per female ranging from 80 to 85 specimens for T. japonicus and from 63 to 83 for T. mitsukurii. Sex ratios were strongly female biased in all combinations and emergence rates exceeded 94% overall. Cumulative curves showed that longer parasitization periods beyond 10–14 days (under the adopted rearing regimes) will not lead to a significantly increase in progeny production. However, ageing females accumulate eggs in their ovaries that can be quickly laid if a sufficient number of host eggs are supplied, thus optimizing host resources. Our data showed that offering H. halys egg masses to host-deprived female Trissolcus once a week for three weeks allowed its eggs to accumulate in the ovary, providing the greatest number of offspring within a three week span.

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“…Foliage or other organisms or their remnants (e.g., feathers, hair) may occasionally occlude portions of the trapping surface. Traps enable longer sampling intervals than sentinel eggs, given the rapidly diminishing acceptability of ≥3-d-old eggs to T. japonicus (Qiu et al 2007, Yang et al 2018. Predation of sentinel eggs is relatively common (Morrison et al 2016, Abram et al 2017, adversely affecting results if parasitoid detection is intended.…”

Section: Discussionmentioning

confidence: 99%

Sampling Methods for Adventive Trissolcus japonicus (Hymenoptera: Scelionidae) in a Wild Tree Host of Halyomorpha halys (Hemiptera: Pentatomidae)

Quinn

Talamas

Leskey

et al. 2019

Journal of Economic Entomology

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Halyomorpha halys (Stål) (Hemiptera: Pentatomidae) is an invasive pest that has established in much of the United States. Adventive populations of an effective Asian egg parasitoid of H. halys, Trissolcus japonicus (Ashmead) (Hymenoptera: Scelionidae), have been detected in several states, including Virginia, and its geographic range is expanding. Documenting changes in its distribution and abundance have thus become key research priorities. For these specific purposes, surveillance of T. japonicus over large geographic areas using sentinel H. halys egg masses may not be optimally efficient, and examination of alternative sampling tactics is warranted. In 2016, sentinel H. halys egg masses were deployed as vertical transects in the canopy of female Ailanthus altissima (Mill.) Swingle (Sapindales: Simaroubaceae) in Virginia. A brief follow-up study in 2016 using yellow sticky traps deployed in the same trees yielded captures of T. japonicus, leading to a comparison of vertical transects of sentinel eggs and yellow sticky traps in 2017. Both methods yielded T. japonicus detections only in the middle and upper tree canopies, whereas other known H. halys parasitoids were detected in the lower, middle, or upper canopies. Based on this information, a method for deploying yellow sticky traps in the middle canopy of H. halys host trees was assessed in 2017, yielding T. japonicus captures. A comparison of estimated time inputs revealed that traps were more efficient than sentinel eggs in this regard. Results are discussed in relation to the utility of each sampling method to address specific questions about the range expansion and ecology of T. japonicus.

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Development and fecundity of Trissolcus japonicus on fertilized and unfertilized eggs of the brown marmorated stink bug, Halyomorpha halys

Cited by 19 publications

References 38 publications

An effective cold storage method for stockpilingHalyomorpha halyseggs for field surveys and laboratory rearing ofTrissolcus japonicus

An effective cold storage method for stockpilingHalyomorpha halyseggs for field surveys and laboratory rearing ofTrissolcus japonicus

Rearing Trissolcus japonicus and Trissolcus mitsukurii for Biological Control of Halyomorpha halys

Sampling Methods for Adventive Trissolcus japonicus (Hymenoptera: Scelionidae) in a Wild Tree Host of Halyomorpha halys (Hemiptera: Pentatomidae)

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