Diversity and abundance of arthropod by-catch in semiochemical-baited traps targeting apple clearwing moth (Lepidoptera: Sesiidae) in organic and conventional apple orchards in British Columbia, Canada

2014 ◽  
Vol 147 (2) ◽  
pp. 227-243 ◽  
Author(s):  
V. Marius Aurelian ◽  
Maya L. Evenden ◽  
Gary J.R. Judd
Keyword(s):  
British Columbia ◽  
Grape Juice ◽  
Tree Density ◽  
Mass Trapping ◽  
Apple Orchards ◽  
Apple Industry ◽  
Baited Traps ◽  
Clearwing Moth ◽  
The Difference ◽  
By Catch

AbstractApple clearwing moth (ACM),Synanthedon myopaeformis(Borkhausen) (Lepidoptera: Sesiidae), is an invasive species and destructive pest of commercial apple trees in British Columbia (BC), Canada. Mass trapping with Concord grape juice and sex pheromone is being developed as an organic pest management tactic. We quantified the diversity and abundance of arthropod by-catch in these traps during the 2009 flight (13 June–31 July) of ACM. Paired traps were deployed in organic and conventionally managed apple orchards planted using different tree densities representing the extremes of the current BC apple industry. Using seasonal by-catch and community-level statistical analyses we determined that family communities of arthropods caught in juice-baited and pheromone-baited traps differed significantly. Yellow juice-baited traps caught a greater variety of arthropod families in greater abundance than pheromone-baited yellow Unitraps®. We show that for each trap type, family communities caught in organic versus conventional orchards were significantly different. Organic orchard management affected abundance of some beneficial taxa, but the sign of the difference depended on the taxon examined (e.g., ladybeetles increased versus lacewings declined). Tree density had no effect on by-catch. Managing ACM by mass trapping may be detrimental to ecosystem services because many nontarget beneficial species are caught. A balanced risk-to-benefit approach should be taken before this technology is widely implemented against ACM.

Spectral discrimination by Synanthedon myopaeformis (Lepidoptera: Sesiidae) when orienting to traps baited with sex pheromone or feeding attractants

2013 ◽  
Vol 146 (1) ◽  
pp. 8-25 ◽  
Author(s):  
Gary J.R. Judd ◽  
Chelsea Eby
Keyword(s):  
Sex Pheromone ◽  
Grape Juice ◽  
Mass Trapping ◽  
Baited Traps ◽  
Spectral Discrimination ◽  
Clearwing Moth ◽  
Group 2 ◽  
Adult Mass ◽  
Group 1

AbstractApple clearwing moth, Synanthedon myopaeformis (Borkhausen) (Lepidoptera: Sesiidae), is an invasive species in Canada and a destructive pest of commercial apple trees in British Columbia. Adult mass trapping is being developed to help organic apple producers manage this pest. We manipulated and measured spectral reflectance from delta traps, unitraps, and bottle traps used to deploy sex pheromone, phenylacetaldehyde, and grape juice mass-trapping baits and compared catches in baited traps having different reflectance properties. Synanthedon myopaeformis did not discriminate among pheromone-baited delta traps painted yellow, green, or white, from those left clear (group 1), nor among those painted purple, blue, red, or black (group 2). Catches by all treatments in group 1 were significantly greater than all in group 2. Catches in pheromone-baited delta traps were positively correlated with their intensity of green wavelength reflectance (500–550 nm). Fluorescent yellow delta traps reflected more green and ultraviolet (300–400 nm) light than standard yellow or green traps but caught significantly fewer moths when baited with pheromone, implying an antagonistic interaction of green versus ultraviolet-sensitive behaviours. Pheromone-baited all-yellow unitraps caught significantly more moths than equivalent all-green, all-white, or all-red unitraps. Catches in pheromone-baited all-yellow unitraps decreased when any component (lid, funnel, or bucket) was replaced with a green one. Changing the intensity or quality of reflectance from funnels had the greatest impact on unitrap catches (82% reduction). Spectral preferences were modulated by odours eliciting different behaviours (mating versus feeding). When baited with the floral feeding odour phenylacetaldehyde, yellow and green delta traps were among the least attractive, whereas black and blue traps were among the most attractive. When baited with grape juice food baits, black bottle traps caught significantly more moths than any other colour except white, and the former are recommended for maximising mass trapping of females while minimising nontarget impacts of juice baits.

scholarly journals Monitoring Chilecomadia valdiviana (Lepidoptera: Cossidae) Using Sex Pheromone-Baited Traps in Apple Orchards in Chile

Insects ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 511
Author(s):  
Wilson Barros-Parada ◽  
Eduardo Fuentes-Contreras ◽  
Jan Bergmann ◽  
Heidy Herrera ◽  
Takeshi Kinsho ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Apple Tree ◽  
Tree Canopy ◽  
Control Treatment ◽  
Mass Trapping ◽  
Apple Orchards ◽  
Trap Catch ◽  
Baited Traps ◽  
Trap Location ◽  
Series Of Experiments

Chilecomadia valdiviana (Philippi) (Lepidoptera: Cossidae) is a native xylophagous pest in apple orchards in Chile. A series of experiments evaluated the efficacy of trap type, sex pheromone (Z7,Z10-16:Ald) dose, and trap location in the apple tree canopy on trap catch of male adults. Bucket traps (6 L), with and without roof and cross vane spacers, together with bucket traps (20 L) without roof and spacers, showed higher catches among the four types of traps evaluated. In a second experiment, the UNI-trap and Delta trap showed higher catches than Multipher, wing, and bucket traps (6 L). Male catches were not affected by height when tested at 0, 1.5, and 3 m in the canopy. A 300 µg dose of Z7,Z10-16:Ald showed higher catch than the control treatment. This dose allowed monitoring of male flight of C. valdiviana for at least five weeks in apple orchards in Chile. Based on relative trap costs, we propose the use of 6 L bucket traps for male mass trapping, while Delta traps can be used for monitoring of male flight. We found that male flight of C. valdiviana occurred mainly from mid-August to late November, reaching its maximum in mid-September.

scholarly journals Annual Spread Rate of Tomentosus Root Disease

Plant Disease ◽  
1997 ◽  
Vol 81 (9) ◽  
pp. 1053-1056 ◽  
Author(s):  
R. S. Hunt ◽  
F. G. Peet
Keyword(s):  
British Columbia ◽  
Tree Ring ◽  
Root Disease ◽  
Uninfected Control ◽  
Radial Increment ◽  
Spread Rate ◽  
Annual Increment ◽  
Temporal Differences ◽  
The Difference ◽  
A New Technique

The spread rate of tomentosus root disease, caused by Inonotus tomentosus, was investigated by a new technique employing temporal differences in the initiation of the reduced annual radial increment between pairs of diseased trees. Pairs of infected trees (stumps) located on the periphery of disease centers were selected in each of six widely separated spruce (Picea spp.) stands in British Columbia. Distances between 12 pairs of stumps were measured, and disks were collected from each stump. Similarly, disks from four additional pairs were collected from trees in a younger stand. Uninfected control disks were collected for all sites. Tree-ring measurements were determined for all disk samples and the year in which the reduction of the annual increment attributable to I. tomentosus began was determined for infected trees. The difference between initiation years for pairs of infected trees divided into the distance between them produced an average annual spread rate of 20 cm/yr. This rate will be used in developing a model for the disease.

Semiochemical-based integrated pest management of ambrosia beetles (Coleoptera: Curculionidae: Scolytinae) in British Columbia’s forest industry: implemented in 1982 and still running

2020 ◽  
Vol 153 (1) ◽  
pp. 79-90
Author(s):  
John H. Borden ◽  
Eveline Stokkink
Keyword(s):  
British Columbia ◽  
Integrated Pest Management ◽  
Pest Management ◽  
Management Programme ◽  
Early Years ◽  
Cost Ratio ◽  
Mass Trapping ◽  
Trypodendron Lineatum ◽  
Ambrosia Beetles ◽  
Tolerable Level

AbstractThree species of ambrosia beetles (Trypodendron lineatum (Olivier), Gnathotrichus sulcatus (LeConte), and G. retusus (LeConte) (Coleoptera: Curculionidae: Scolytinae)) have been estimated to cause annual losses of $95–$189 million in degrade of logs and lumber on the British Columbia coast, in Canada. A consultant-run semiochemical-based integrated pest management programme was implemented in 1982 against these beetles, following fulfilment of four prerequisites: (1) presence of receptive potential clients, (2) availability of semiochemical lures, (3) invention of an operational trap, and (4) proof of concept of mass trapping technology. The programme is based on two broad strategies: maintain the problem at a tolerable level and, if necessary, reduce the problem to a tolerable level. One measure of effectiveness over 12 years of mass trapping at a dryland sort near Sooke, on Vancouver Island, British Columbia, was 16.4 million beetles trapped and an estimated five to one benefit-to-cost ratio. Despite success, several factors have conspired to reduce the programme from 50 sites serviced in early years to 7 in 2018. Timber companies in British Columbia are currently showing renewed interest and are taking steps to incorporate the integrated pest management programme as a formal component of their overall operations.

History of the Larch Sawfly, with Notes on Origin and Biology,

1955 ◽  
Vol 87 (3) ◽  
pp. 103-111 ◽  
Author(s):  
H. C. Coppel ◽  
K. Leius
Keyword(s):  
British Columbia ◽  
North America ◽  
Native Species ◽  
Insect Pest ◽  
Forest Insect ◽  
Larch Sawfly ◽  
History Of ◽  
Biological Characters ◽  
The Difference ◽  
Forest Biology

The larch sawfly, Pristiphora erichronii (Htg.), is currently considered a major forest insect pest in Canada. At the present time within Canada, the sawfly reacts to parasitism by Mesoleius tenthredinis Morley in two ways. In Manitoba and Saslratchewan the sawfly encapsulates approximately 100 per cent of the parasite eggs deposited, whereas in British Columbia encapsulation rarely exceeds four per cent (Muldrew, 1953). The reasons for the difference in degree of encapsulation are apparently unknown; however, since the origin of the sawfly itself is obscure, the possibility exists that a native species, an introduced species, Or a combination of both may he present, or that geographical or ecological units may have arisen. Studies now under way by officers of the Forest Biology and Entomology divisions are attacking the problem of identity and origin following the pattern established for the European spruce sawfly, Diprion hercyniae (Htg.). In this instance, as with the larch sawfly, parasites were introduced on the assumption that the pest had been introduced from Europe. Critical investigations by Reeks (1941) and Balch, Reeks, and Smith (1941), involving morphological, cytological, and other biological characters, showed that the species occurring in North America was one of two species common in Europe, and previously referred to there as Gilpinia polytoma (Htg.). Balch et al. (1941) showed that D. hercyniae had been introduced into North America.

SOIL pH VARIATION IN BRITISH COLUMBIA APPLE ORCHARDS

1982 ◽  
Vol 62 (4) ◽  
pp. 695-698 ◽  
Author(s):  
G. H. NEILSEN ◽  
P. B. HOYT
Keyword(s):  
British Columbia ◽  
Soil Ph ◽  
Soil Surface ◽  
Tree Trunk ◽  
Apple Orchards ◽  
Ph Variation ◽  
Individual Trees

Soil pH variation was examined in British Columbia apple orchards. Soil pH tended to increase as distance from the tree trunk and depth from the soil surface increased. However, pH variation from tree to tree was frequently significant both for widely separated trees in orchards where pH was expected to be variable and for adjacent trees in orchards expected to have uniform soil pH. To represent orchard blocks adequately, emphasis should, therefore, be placed upon collecting samples from many rather than a few trees. Nonetheless, the possibility of decreased soil pH near trees can not be ignored in sampling individual trees.

EVALUATION OF PHEROMONE-BAITED TRAPS AND PHEROMONE LURE CONCENTRATIONS FOR MONITORING BLUEBERRY LEAFTIER (LEPIDOPTERA: TORTRICIDAE) POPULATIONS

1992 ◽  
Vol 124 (5) ◽  
pp. 815-825 ◽  
Author(s):  
Sridhar Polavarapu ◽  
William D. Seabrook
Keyword(s):  
Ice Cream ◽  
Population Monitoring ◽  
Pheromone Trap ◽  
Mass Trapping ◽  
Trap Design ◽  
Baited Traps ◽  
Pheromone Concentration ◽  
Coefficients Of Variation ◽  
Highly Correlated ◽  
Trap Catches

AbstractSix pheromone trap designs, including five high-capacily and a sticky trap, and four PVC lure concentrations of pheromone were evaluated for monitoring blueberry leaftier populations in six blueberry fields in Nova Scotia. Larval densities and subsequent male moth catches in the same year for all the trap designs evaluated, except double funnel traps, were highly correlated. Multipher III traps captured the highest number of moths, followed by Unitraps and double funnel traps. The ice cream container trap captured significantly fewer moths than any other trap design. At most locations, the first moth was caught on the same day in all the trap designs except the ice cream container trap. Trap catches increased with increasing pheromone concentration up to 0.03% dose. Traps baited with 0.3% lures captured significantly fewer moths than those with 0.003% or 0.03%. Based on mean trap catches, R2 values, coefficients of variation among traps, trap efficiency, and lure evaluations, the Unitraps baited with 0.003% lures are selected for further development of a population monitoring system for blueberry leaftier moths. The Multipher III traps baited with 0.03% lures captured up to 44 000 male moths (mean per trap per season) at high densities, demonstrating their potential in mass trapping blueberry leaftiers.

A SURVEY FOR THE AMBROSIA BEETLES TRYPODENDRON LINEATUM AND GNATHOTRICHUS RETUSUS (COLEOPTERA: SCOLYTIDAE) IN A SAWMILL USING PHEROMONE-BAITED TRAPS

1985 ◽  
Vol 117 (1) ◽  
pp. 49-55 ◽  
Author(s):  
T. L. Shore ◽  
J. A. McLean
Keyword(s):  
Temporal Distribution ◽  
Distribution Patterns ◽  
Mass Trapping ◽  
Spatial And Temporal Distribution ◽  
Trypodendron Lineatum ◽  
Ambrosia Beetles ◽  
Baited Traps

AbstractThe pheromones lineatum and (+)-sulcatol were used in traps in a sawmill to survey the ambrosia beetles Trypodendron lineatum (Olivier) and Gnathotrichus retusus (LeConte) respectively. Spatial and temporal distribution patterns for both species were identified. This information can be used for the establishment of a pheromone-based mass-trapping program for ambrosia beetles. The addition of ethanol and α-pinene to traps baited with (+)-sulcatol significantly increased the catches of G. retusus.

scholarly journals Fruiting of High-density Apple Orchards on Clonal Rootstocks

HortScience ◽  
1996 ◽  
Vol 31 (4) ◽  
pp. 665e-665
Author(s):  
A.S. Devyatov
Keyword(s):  
Podzolic Soil ◽  
Tree Density ◽  
High Density ◽  
Annual Precipitation ◽  
Apple Orchards ◽  
Average Yield ◽  
The Third ◽  
Initial Yield ◽  
Nursery Trees ◽  
All Treatment

Orchard densities from 833 to 2500 trees/ha were studied on sod-podzolic soil (annual precipitation 550 mm). An orchard was planted in Spring 1990 and 1991 using 2-year-old nursery trees grown in film containers. The interval between trees in the row was 1 to 1.5 to 2 to 2.5 and 3 m. The trees were grafted on dwarf rootstock (62-396) and semi-dwarf (54-118). The commercial fruiting of `Tellisaare' began the third year after planting, `Antey' the fourth, and Spartan at fifth. The initial yield of `Antey in the most dense treatment was 14.5 t·ha–1, `Tellisaare' was 15 to 22 t·ha–1, according to rootstocks. Average yield of `Antey' on 62-396 for 1992–95 at the orchard density of 2500 trees/ha was 10 t·ha–1·year–1 and on rootstock of 54-118 it was 21 t·ha–1. However, yield of `Tellisaare' 54-118 for 1992–1995 was 13 to 15 t·ha–1 in all treatment of orchard density from 1666 to 833 trees/ha. The annual yield of this cultivar grafted on rootstock 54-118 at a tree density of 2500 plants/ha increased to 18.3 t·ha–1.

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