Field-cage evaluation of the survival, feeding and reproduction of Laricobius osakensis (Coleoptera: Derodontidae), a predator of Adelges tsugae (Hemiptera: Adelgidae)

Vieira, L. C.; Salom, Scott M.; Montgomery, Michael E.; Kok, Loke T.

doi:10.1016/j.biocontrol.2013.05.004

Cited by 10 publications

(7 citation statements)

References 17 publications

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“…Short‐term studies describing natural history and interactions in systems undergoing flux may thus be extremely limited in their application to system understanding and extrapolation to other systems (which also may be undergoing flux). Temperature‐based predictions of native or introduced predator/prey synchronization (Cheah & McClure, ; Lu & Montgomery, ; Lu et al , ; Zilahi‐Balogh et al , 2003; Flowers et al , ; Lamb et al , , ; Mausel et al , ; Grubin et al , ; Keena et al , ; Vieira et al , ; Limbu et al , ) may therefore not be applicable and could partly explain the failure of introduced biocontrol species to control A. tsugae . Indeed, introduced biocontrol species have exhibited new nontarget impacts as a result of climate change (Lu et al , ).…”

Section: Discussionmentioning

confidence: 99%

Implications of early production in an invasive forest pest

Leppanen

Simberloff

2016

Agr Forest Entomol

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1 First-instar hemlock woolly adelgid Adelges tsugae nymphs were observed on eastern hemlock Tsuga canadensis in Blount County, Tennessee, 3 months earlier than all previous worldwide accounts and during the warmest recorded December (2015) in North America. 2 Subsequent quantification of maturing nymphs, adults and egg-laying adults, followed by the hatching and development of first-instar nymphs into egg-laying adults and implantation of their offspring, indicates newly documented, early A. tsugae reproduction in Blount and Knox Counties, Tennessee, shifted in time and with life stages overlapping within an earlier and shorter window. 3 Warm winter temperatures may accelerate the A. tsugae life cycle, contributing offspring to A. tsugae populations outside of recognized cycles and possibly confounding management. 4 Historic warm winter temperatures throughout the introduced range of A. tsugae in eastern North America may have contributed to its escalation from 'introduced' to 'invasive'.

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Section: Discussionmentioning

confidence: 99%

Implications of early production in an invasive forest pest

Leppanen

Simberloff

2016

Agr Forest Entomol

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“…The presence of a predator does not necessitate its interaction with and population impact on prey (Van Driesche & Hoddle, 2017). Studies demonstrating predators reduce HWA numbers in the laboratory and in field cages (e.g., McClure et al, 2000;Lamb et al, 2005;Mausel et al, 2008b;Vieira et al, 2013) are suggestive but indicate only potential for control in the field. Control is achieved when pest numbers are reduced below the threshold where they damage their host.…”

Section: Environmental Assessmentmentioning

confidence: 99%

“…McClure (1995a,b) reported the most significant HWA natural enemy in Japan is the oribatid mite Diapterobates humeralis, consuming "woolly" filaments that constitute the ovisac and subsequently dislodge >95% of eggs, which never colonise Tsuga spp. Studies demonstrating predators reduce HWA numbers in the laboratory and in field cages (e.g., McClure et al, 2000;Lamb et al, 2005;Mausel et al, 2008b;Vieira et al, 2013) are suggestive but indicate only potential for control in the field. Propagation difficulties and apparent differences in its interactions with HWA infesting different hemlock species prevented its use .…”

Section: Introductionmentioning

confidence: 99%

Circumventing regulatory safeguards:Laricobiusspp. and biocontrol of the hemlock woolly adelgid

Leppanen

Frank

Simberloff

2018

Insect Conserv Diversity

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Biological control entails introducing non‐native natural enemies to control weeds and pests. Instances of poorly regulated biocontrol have had harmful consequences leading to significant efforts to improve risk assessment of agents before release. Laricobius naganoensis (Coleoptera: Derodontidae) was inadvertently imported to eastern North America with Laricobius osakensis, introduced from Japan to control the hemlock woolly adelgid Adelges tsugae (Hemiptera: Adelgidae). The United States Department of Agriculture (U.S.D.A.) subsequently permitted introduction of L. naganoensis as a biocontrol agent and contaminant, requiring no study or monitoring owing to difficulty of the effort required to distinguish it from L. osakensis. The Plant Protection Act of 2000 (7 U.S.C. § § 7701–7786) assigns U.S.D.A. responsibility for vetting and reducing risk from biocontrol agents while ensuring the process is transparent, accessible, and based on scientific evidence. Typically, release of a new agent involves a 30‐day period when the public may review and comment on an assessment of risk associated with the introduction, an Environmental Assessment (EA). No public review and comment period was allowed before L. naganoensis’ introduction, and the EA was not made public. Biocontrol practitioners and stakeholders agree that critical scientific evaluation of multiple lines of evidence is necessary to evaluate risk associated with new introductions. The importance of accurate agent identification and avoidance of contamination has long been recognised, and procedures to minimise risk are well known. While such processes might be difficult to implement, those challenges should not justify a release that circumvents regulatory safeguards.

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“…This finding suggests L. osakensis relies on volatiles produced by HWA’s host trees to locate potential prey. The phenology of L. osakensis is highly synchronous with the life cycle of HWA, making it a good candidate for biological control of HWA in North America [ 17 , 134 , 135 ].…”

Section: Potential Hwa Control and Management Optionsmentioning

confidence: 99%

A Little Bug with a Big Bite: Impact of Hemlock Woolly Adelgid Infestations on Forest Ecosystems in the Eastern USA and Potential Control Strategies

Letheren

Hill

Salie

et al. 2017

IJERPH

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Hemlock woolly adelgid (Adelges tsugae Annand, HWA) remains the single greatest threat to the health and sustainability of hemlock in the eastern USA. The loss of hemlock trees leads to further negative impacts on the diversity and stability of ecosystems in the eastern part of North America. It is, therefore, urgent to develop effective control measures to reduce HWA populations and promote overall hemlock health. Currently available individual and integrated approaches should continue to be evaluated in the laboratory and in the field along with the development of other new and innovative methods.

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Field-cage evaluation of the survival, feeding and reproduction of Laricobius osakensis (Coleoptera: Derodontidae), a predator of Adelges tsugae (Hemiptera: Adelgidae)

Cited by 10 publications

References 17 publications

Implications of early production in an invasive forest pest

Implications of early production in an invasive forest pest

Circumventing regulatory safeguards:Laricobiusspp. and biocontrol of the hemlock woolly adelgid

A Little Bug with a Big Bite: Impact of Hemlock Woolly Adelgid Infestations on Forest Ecosystems in the Eastern USA and Potential Control Strategies

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