scholarly journals Comparing the toxicity of two fumigants to insects from the field vs laboratory - does insect origin matter?

2018 ◽  
Vol 71 ◽  
pp. 350
Author(s):  
Adriana J. Najar-Rodriguez ◽  
Matthew K.D. Hall ◽  
Catherine R. Wilks ◽  
Anthony R. Adlam ◽  
Sam Brierley ◽  
...  
Keyword(s):  
New Zealand ◽  
Bark Beetle ◽  
Pinus Radiata ◽  
Methyl Bromide ◽  
Artificial Diet ◽  
Ethanol Tolerance ◽  
Forest Insect ◽  
Alpha Pinene ◽  
Potential Alternative ◽  
Different Origins

The golden-haired bark beetle, Hylurgus ligniperda (F.), is a common forest insect which may be associated with pine (Pinus radiata D.Don) logs exported from New Zealand. We tested the dose-mortality responses of H. ligniperda adults, from two different origins (field vs laboratory), to methyl bromide (MB), the most widely used fumigant worldwide; and to ethanedinitrile (EDN), a potential alternative to MB. Naked insects were fumigated with either MB or EDN at 10°C for 4 and 3 hours, respectively. Laboratory adults had been reared on artificial diet under controlled conditions for >10 generations. Field adults, by contrast, had been recently collected from Lindgren funnel traps with lures of alpha-pinene and ethanol. Tolerance to the two fumigants tested was significantly different, according to the origin of the insects, with field-collected adults being less tolerant to MB and EDN than laboratory-reared ones. The implications of our results for the development of disinfestation schedules for New Zealand export logs will be discussed.    

scholarly journals Comparing the toxicity of two fumigants to insects from the field vs laboratory — does insect origin matter?

2017 ◽  
Vol 70 ◽  
pp. 323
Author(s):  
A.J. Najar-Rodriguez ◽  
M.K.D. Hall ◽  
C.R. Wilks ◽  
A.R. Adlam ◽  
S. Brierley ◽  
...  
Keyword(s):  
New Zealand ◽  
Bark Beetle ◽  
Methyl Bromide ◽  
The Other ◽  
Alpha Pinene ◽  
Controlled Conditions ◽  
Other Hand ◽  
Significant Difference ◽  
Different Origins

The golden-haired bark beetle, Hylurgus ligniperda, is one of the most common insects normally associated with New Zealand export logs. Here we tested the dose-mortality responses of H. ligniperda adults, from two different origins (field vs laboratory), to methyl bromide (MB) — the most widely used fumigant worldwide and ethanedinitrile (EDN), a new fumigant currently being considered as very promising for MB replacement. Naked insects were fumigated with either MB or EDN at 10˚C for 4 and 3 hours, respectively. Adults from the laboratory had been reared on an arti cial diet and under controlled conditions for over 10 generations at the time of the experiments. Field adults, on the other hand, had been recently collected from Lindgren funnel traps with lures of alpha-pinene and ethanol. Our results showed that there is a significant difference in the tolerance to the two fumigants tested according to the origin of the insects, with field-collected adults being less tolerant to MB and EDN than laboratory-reared ones. The implications of our results for the development of disinfestation schedules for New Zealand export logs will be discussed.

scholarly journals Efficacy of methyl bromide used at reduced rates to control larvae and adults of goldenhaired bark beetle Hylurgus ligniperda

2013 ◽  
Vol 66 ◽  
pp. 82-88
Author(s):  
K.G. Somerfield ◽  
B.L. Bycroft ◽  
D.W. Brash ◽  
J.N. Clark ◽  
D.I. Hedderley ◽  
...  
Keyword(s):  
New Zealand ◽  
Bark Beetle ◽  
Pinus Radiata ◽  
Methyl Bromide ◽  
Life Stages ◽  
Cambium Layer

Pine (Pinus radiata D Don) logs exported from New Zealand must undergo fumigation to ensure they are free of phytosanitary insects to meet the requirements of importing countries The goldenhaired bark beetle Hylurgus ligniperda (F) is one of the major hitchhiker species that can infest New Zealand pine logs Adults and larvae can be present in the bark and cambium layer of freshly cut logs To examine ways of reducing rates of methyl bromide fumigation diet containing both life stages (extracted from pine logs) was exposed to 0 49 or 73 g/m3 methyl bromide for 16 h in 28litre fumigation chambers at 5 10 15 or 20C Both the 49 g/m3 and 73 g/m3 methyl bromide exposures resulted in 100 mortality at all temperatures Average mortality among controls was larvae 7 adults 23 The results indicate that the present methyl bromide fumigation rates used for pine logs exported from New Zealand could be reduced

scholarly journals Life cycle and massrearing of Hylurgus ligniperda using a novel eggcollection method

2016 ◽  
Vol 69 ◽  
pp. 143-152 ◽  
Author(s):  
G.K. Clare ◽  
E.M. George
Keyword(s):  
Life Cycle ◽  
New Zealand ◽  
Pinus Radiata ◽  
Methyl Bromide ◽  
Artificial Diet ◽  
Developmental Stages ◽  
Pupal Stage ◽  
Laboratory Method ◽  
Life Stages ◽  
Large Numbers

The goldenhaired bark beetle Hylurgus ligniperda (Coleoptera Scolytidae) is an insect of quarantine concern associated with Pinus radiata in New Zealand Exported logs are fumigated with methyl bromide (MB) before departure or on arrival Research is under way to find alternatives to MB for logs and to manage emissions This research requires large numbers of all stages of H ligniperda to identify effective treatments The study reports the first laboratory method for rearing large numbers of all life stages of H ligniperda A novel oviposition device enabled efficient egg collection Larvae were reared from eggs inoculated directly into artificial diet Life cycle data were obtained for all the developmental stages of H ligniperda Six continuous generations were produced with each generation taking a minimum of 72 days Females laid an average of 30919 eggs each Almost 70 of the eggs formed adults via four larval instars and a pupal stage

scholarly journals Monitoring the concentration of methyl bromide in the treated space during commercial fumigation of logs

2016 ◽  
Vol 69 ◽  
pp. 324-324
Author(s):  
M.K.D. Hall ◽  
A.R. Adlam ◽  
A.J. Hall ◽  
A.J. Najar-Rodriguez
Keyword(s):  
New Zealand ◽  
Pinus Radiata ◽  
Methyl Bromide ◽  
Average Volume ◽  
Critical Step ◽  
Toxicity Studies ◽  
Insect Toxicity ◽  
Sorption Characteristics

Development of sciencebased fumigation schedules for phytosanitary treatments relies on an understanding of the factors which influence the effectiveness of a fumigant under different conditions Understanding the sorption characteristics of a fumigant is a critical step in establishing commercial treatment schedules as this process which involves adsorption and absorption of fumigant molecules influences the concentration of the fumigant remaining in the treated space after fumigation and hence the amount of fumigant available to kill insects We monitored the concentration of methyl bromide during commercial fumigation of three log stacks (average volume 4078 m3) with 120 g/m3 methyl bromide for 13 h under a tarpaulin Pine (Pinus radiata D Don) logs were fumigated at South Port Bluff (New Zealand) during April 2015 Gas samples from the treated space were taken at 05 1 2 3 the treated space indicating that the rest of the fumigant was sorbed These data can now be combined with insect toxicity studies to guide the development of improved commercial treatment schedules to treat log exports from New Zealand

Efficacy of quarantine treatments using reduced methyl bromide concentrations to disinfest Pinus radiata logs from New Zealand

2020 ◽  
Vol 89 ◽  
pp. 101718
Author(s):  
Adriana J. Najar-Rodriguez ◽  
Matthew K.D. Hall ◽  
Anthony R. Adlam ◽  
Saeedeh Afsar ◽  
Kambiz Esfandi ◽  
...  
Keyword(s):  
New Zealand ◽  
Pinus Radiata ◽  
Methyl Bromide

scholarly journals Relative methyl bromide tolerances of Arhopalus ferus (Mulsant) Hylurgus ligniperda (F) and Hylastes ater (Paykull) adults

2014 ◽  
Vol 67 ◽  
pp. 80-85
Author(s):  
T. Pranamornkith ◽  
M.K.D. Hall ◽  
A.R. Adlam ◽  
B.B.C. Page ◽  
P.G. Connolly ◽  
...  
Keyword(s):  
New Zealand ◽  
Bark Beetle ◽  
Methyl Bromide ◽  
Pine Bark ◽  
Black Pine ◽  
Life Stages ◽  
Forest Pests ◽  
Longhorn Beetle ◽  
Hylastes Ater ◽  
India And China

The adult stages of three key New Zealand forest pests burnt pine longhorn beetle (Arhopalus ferus) goldenhaired bark beetle (Hylurgus ligniperda) and black pine bark beetle (Hylastes ater) were fumigated at 10 or 20C for 4 h to determine their mortalities at increasing dosages of methyl bromide as a first step towards developing a new fumigation schedule for New Zealand export logs Hylastes adults were the most methyl bromide tolerant methyl bromide concentration required to control Hylastes adults is much lower than the phytosanitary requirement for export logs to India and China which requires 120 g/m3 for for logs exported from New Zealand but further work on other life stages is required

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