Host specificity of Laricobius nigrinus Fender (Coleoptera: Derodontidae), a potential biological control agent of the hemlock woolly adelgid, Adelges tsugae Annand (Homoptera: Adelgidae)

Zilahi‐Balogh, G. M. G.; Kok, Loke T.; Salom, Scott M.

doi:10.1016/s1049-9644(02)00014-2

Cited by 83 publications

(44 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The majority of theses studies have shown that results from both kind of tests are in general agreement (Duan and Messing, 2000b;Zilahi Balogh et al, 2002;Haye, 2004;Kuhlmann et al, 2005). An attempt was made by Mansfield and Mills (2004) to compare the outcome of no-choice, dual choice and multiple choice tests.…”

Section: How Indicative Are Host Specificity Tests?mentioning

confidence: 89%

Methods Used to Assess Non-target Effects of Invertebrate Biological Control Agents of Arthropod Pests

2005

View full text Add to dashboard Cite

The number of concerns regarding potential non-target effects of invertebrate biological control agents of arthropods has risen over the last decade and an increasing number of studies have since dealt with this topic. Despite some recent international initiatives aimed at providing guidance for risk assessment of biological control agents, detailed methods on how tests should be designed and conducted to assess for potential non-target effects still need to be provided. It is believed that this review comes at an ideal time, giving an overview of methods currently applied in the study of non-target effects in biological control of arthropod pests. It provides the first step towards the ultimate goal of devising guidelines for the appropriate methods that should be universally applied for the assessment and minimisation of potential non-target effects. The main topics that are reviewed here include host specificity (including field surveys, selection of non-target test species and testing protocols), post-release studies, competition, overwintering and dispersal. Finally, a number of conclusions that have emerged from this comprehensive compilation of studies are drawn, addressing potential non-target effects in arthropod biological control.

show abstract

Section: How Indicative Are Host Specificity Tests?mentioning

confidence: 89%

Methods Used to Assess Non-target Effects of Invertebrate Biological Control Agents of Arthropod Pests

2005

View full text Add to dashboard Cite

show abstract

“…The aphid-like insect inserts a long stylet in the parenchyma tissue on the underside of hemlock needles and twigs, and consumes photosynthates, eventually starving the tree and causing death (Young et al 1995). Native predators have thus far been unsuccessful in controlling HWA populations (Montgomery and Lyon 1996), although bio-control agents such as the Laricobius nigrinus show some promise in curbing further expansion (Zilahi-Balogh et al 2002, Mausel et al 2010. Because of its sensitivity to cold temperatures, the rate of HWA colonization decelerates northward (Orwig et al 2002(Orwig et al , 2012.…”

Section: Introductionmentioning

confidence: 99%

Hemlock loss due to the hemlock woolly adelgid does not affect ecosystem C storage but alters its distribution

2013

View full text Add to dashboard Cite

Abstract. The 1950s introduction of the hemlock woolly adelgid (HWA, Adelges tsugae) has caused extensive hemlock (Tsuga canadensis) mortality with little understanding of the long-term consequences for forest carbon (C) storage. In southern New England, hemlock is being replaced by the early successional species black birch (Betula lenta). The objective of this research was to measure C stocks in stand types of varying age and abundance of hemlock and/or black birch. Using information from previous studies and comparisons of data between plots with identical land-use history, we addressed the question of whether the quantity and distribution of C pools in black birch forests are the same as those found in the hemlock stands they replace and, if so, over what time scales. If HWA did not infest hemlock stands in central MA, C stocks in these secondary stands could still increase by at least ;30% over a period of 100 years. Girdling, intended to simulate HWA infestation, resulted in a large transfer of C from live biomass to coarse woody debris five years after treatment, but had little effect on total ecosystem C content. A former hemlock stand killed by HWA and now dominated by black birch saplings (;23,000 stems ha À1 ) also had a large pool of highly decayed CWD and a rapidly aggrading C pool in live biomass. C pools in biomass in a mature, secondary growth black birch stand ;135 years since pastureland abandonment were as large as those in a primary-growth hemlock stand ;235 years of age. Because of uncertainties in the intensity of former land use and time since pastureland abandonment, this analysis can only speak to the potential consequences of HWA on forest-C balance over the long term. Based on this analysis, it appears that ecosystem C storage is resilient to the loss of hemlock because of vigorous regrowth by black birch. This empirical finding is consistent with the results of a recent modeling effort.

show abstract

“…PBA is found on eastern white pine, Pinus strobus L. (Pinaceae), and is distributed throughout eastern North America and Europe (Blackman and Eastop, 1994). This species was also tested by Zilahi-Balogh et al (2002) during host feeding tests on L. nigrinus. Eggs, nymphs, and adults of both prey species were used in no-choice and paired-choice (HWA and PBA) tests.…”

Section: Host Feedingmentioning

confidence: 99%

“…Sasajiscymnus tsugae (Sasaji and McClure) (formerly Pseudoscymnus tsugae) was the first biological control agent released for the control of HWA (Cheah and McClure, 1998;McClure et al, 2000), followed by Laricobius nigrinus Fender (Coleoptera: Derodontidae) (Cheah et al, 2004). Laricobius nigrinus is native to the Pacific Northwest and was studied under quarantine (Zilahi-Balogh et al, 2002. It is currently being released in the eastern US as a biological control agent of HWA (Mausel, 2004).…”

Section: Introductionmentioning

confidence: 99%

Development and feeding of Tetraphleps galchanoides, a predator of the hemlock woolly adelgid

et al. 2006

View full text Add to dashboard Cite

Tetraphleps galchanoides Ghauri (Hemiptera: Anthocoridae) nymphs were collected from hemlock woolly adelgid (HWA) Adelges tsugae Annand (Hemiptera: Adelgidae) infested Tsuga sp. in Baoxing, Sichuan, China. First and second stage nymphs collected from foliage shipped from China; were reared to adults and tested for feeding rates and host preferences. They were reared at 5, 8, 12, and 15 ± 1°C , respectively, in the quarantine laboratory at Virginia Polytechnic Institute and State University. At 8°C, development time was 15, 20, and 40 days for the N-III, IV, and V nymphal stages, respectively. Adult males lived 83 days with a range of 21À147 days. A single adult female lived for 21 days. At 5°C, second stage T. galchanoides nymphs consumed 0.8 HWA nymphs per day, and 2.0 HWA nymphs per day at the N-V stage. At 8°C, consumption of HWA nymphs ranged from 1.3 to 3.4 nymphs per day for the N-III to N-V stages, respectively. Adult T. galchanoides consumed more HWA eggs than HWA adults, pine bark adelgid (PBA) Pineus strobi (Hartig) (Hemiptera: Adelgidae) adults, and eggs in no-choice tests. In choice tests with HWA eggs and PBA eggs, more HWA eggs were eaten. Adult and nymph body measurements are presented for determination of nymphal instars.

show abstract

Host specificity of Laricobius nigrinus Fender (Coleoptera: Derodontidae), a potential biological control agent of the hemlock woolly adelgid, Adelges tsugae Annand (Homoptera: Adelgidae)

Cited by 83 publications

References 10 publications

Methods Used to Assess Non-target Effects of Invertebrate Biological Control Agents of Arthropod Pests

Methods Used to Assess Non-target Effects of Invertebrate Biological Control Agents of Arthropod Pests

Hemlock loss due to the hemlock woolly adelgid does not affect ecosystem C storage but alters its distribution

Development and feeding of Tetraphleps galchanoides, a predator of the hemlock woolly adelgid

Contact Info

Product

Resources

About