Mating Disruption of Two Sympatric, Orchard-Inhabiting Tortricids, Choristoneura rosaceana and Pandemis limitata (Lepidoptera: Tortricidae), with Pheromone Components of Both Species' Blends

1999 ◽  
Vol 92 (2) ◽  
pp. 380-390 ◽  
Author(s):  
M. L. Evenden ◽  
G. J. R. Judd ◽  
J. H. Borden
Keyword(s):  
Mating Disruption ◽  
Choristoneura Rosaceana ◽  
Pheromone Components ◽  
Pandemis Limitata

TOWARD PHEROMONE-BASED MATING DISRUPTION OF ENARMONIA FORMOSANA (LEPIDOPTERA: TORTRICIDAE) ON ORNAMENTAL CHERRY TREES

1999 ◽  
Vol 131 (1) ◽  
pp. 97-105 ◽  
Author(s):  
Crawford McNair ◽  
Gerhard Gries ◽  
Mark Sidney
Keyword(s):  
British Columbia ◽  
Management Strategy ◽  
Mating Disruption ◽  
Integrated Management ◽  
Urban Environments ◽  
Breast Height ◽  
Pheromone Components ◽  
Pheromone Blend ◽  
Enarmonia Formosana ◽  
Cherry Trees

AbstractThe potential for pheromone-mediated mating disruption of the cherry bark tortrix (CBT), Enarmonia formosana (Scopoli), was evaluated by attaching PVC tube dispensers to the trunks of mature (> 40 cm diameter at breast height) ornamental cherry trees, Prunus cvs., lining suburban streets of New Westminster and Vancouver, British Columbia. Dispensers released either a blend of (E)-9-dodecenyl acetate (E9-12:OAc, 49.5%), (Z)-9-dodecenyl acetate (Z9-12:OAc, 49.5%), and (Z)-7-decenyl acetate (Z7-10:OAc, 1%) at a rate of 29 mg/day (Exp. 1), or E9-12:OAc alone at 27 mg/day (Exp. 2), 4 mg/day (Exp. 3), or 0.5 mg/day (Exp. 4). A sticky Delta trap baited with a grey rubber septum impregnated with CBT pheromone components E9-12:OAc (40 μg), Z9-12:AOc (60 μg), and Z7-10:OAc (1 μg) was placed in each tree. Captures of male CBTs in treatment trees were significantly reduced compared with control trees in all experiments. Results suggest that disruption of pheromone-based communication in CBT around individual cherry trees is feasible with a pheromone blend or with E9-12:OAc alone, and could become part of an integrated management strategy for CBT in urban environments.

DISTRIBUTION AND FLIGHT ACTIVITY OF OBLIQUEBANDED AND THREELINED LEAFROLLERS (LEPIDOPTERA: TORTRICIDAE) IN THE OKANAGAN AND SIMILKAMEEN VALLEYS OF BRITISH COLUMBIA

1984 ◽  
Vol 116 (12) ◽  
pp. 1659-1664 ◽  
Author(s):  
H. F. Madsen ◽  
J. M. Vakenti ◽  
A. P. Gaunce
Keyword(s):  
British Columbia ◽  
Sex Pheromone ◽  
Flight Activity ◽  
Choristoneura Rosaceana ◽  
Obliquebanded Leafroller ◽  
Large Numbers ◽  
Pandemis Limitata ◽  
Growing Region

AbstractThe distribution and adult flight activity of obliquebanded leafroller, Choristoneura rosaceana (Harris) and threelined leafroller, Pandemis limitata (Rob.) were studied in the Okanagan and Similkameen valleys of British Columbia using traps baited with the sex pheromone of each species. Adult activity began in early June and continued through September and the two species were distributed throughout the apple-growing region of the Okanagan and Similkameen valleys. In the northern Okanagan and in uncultivated areas at higher elevation, the trap captures indicated that both species are univoltine. In the southern Okanagan and the Similkameen Valley, large numbers of both species were captured throughout the season which may indicate more than one generation. Traps captured similar numbers of adults in orchards with known infestations and in orchards lacking infestations, suggesting that males are attracted to traps in orchards from native hosts in uncultivated sites.

Comparative Sex Pheromone Biosynthesis in the Obliquebanded Leafroller, Choristoneura rosaceana, and the Redbanded Leafroller, Argyrotaenia velutinana, Moths

1987 ◽  
Vol 42 (7-8) ◽  
pp. 961-964
Author(s):  
Stephen P. Foster ◽  
Wendell L. Roelofs
Keyword(s):  
Sex Pheromone ◽  
Carbon Chain ◽  
Pheromone Biosynthesis ◽  
Choristoneura Rosaceana ◽  
Argyrotaenia Velutinana ◽  
Deuterium Label ◽  
Sex Pheromone Biosynthesis ◽  
Redbanded Leafroller ◽  
Obliquebanded Leafroller ◽  
Pheromone Components

Biosynthesis of the major sex pheromone components of the obliquebanded leafroller, (Z)- and (E)-11-tetradecenyl acetates, is shown to proceed by Δ11 desaturation of myristate as in the related redbanded leafroller. A comparison between the amounts of deuterium label incorporated into the pheromone components from labelled myristic, palmitic and stearic acids gave a higher level of incorporation for the shorter chain acids, suggesting that Δ11 desaturation is a faster process than 2 carbon chain-shortening by β-oxidation.

Attraction of male Pandemis limitata (Lepidoptera: Tortricidae) to natural and synthetic pheromone sources: importance for assessing communication disruption

2006 ◽  
Vol 138 (5) ◽  
pp. 697-711 ◽  
Author(s):  
Naomi C. DeLury ◽  
Gary J.R. Judd ◽  
Mark G.T. Gardiner
Keyword(s):  
Filter Paper ◽  
Flight Tunnel ◽  
Communication Disruption ◽  
Baited Traps ◽  
Pheromone Components ◽  
Tetradecenyl Acetate ◽  
Clean Air ◽  
Pandemis Limitata ◽  
Synthetic Blend ◽  
Pheromone Blend

AbstractIn flight-tunnel assays in both clean and pheromone-permeated air, we compared attraction and behavioural responses of male Pandemis limitata (Robinson) to “calling” females, female pheromone gland extract (FGE), and synthetic sources of pheromone. In clean air, female-baited traps caught significantly more males than traps baited with rubber septa lures loaded with 10 or 100 µg of the known pheromone components ((Z)-11-tetradecenyl acetate (Z11-14:Ac) and (Z)-9-tetradecenyl acetate) blended in a 91:9 or 94:6 ratio. Traps baited with septa loaded with 500 µg of the 94:6 blend caught as many males as did female-baited traps. Proportions of males engaging in wing fanning, take-off flight, locking onto the plume, and upwind flight towards a rubber septum loaded with 100 or 500 µg of the 94:6 blend were not significantly different from proportions exhibiting these behaviours in response to calling females. Only 500 µg lures elicited as much source contact in the same time as did a calling female. In clean air, traps baited with FGE applied to filter paper at 5 or 10 female equivalents caught as many males as did calling females. In air treated with Z11-14:Ac applied as a pheromone disruptant, females attracted more males and did so sooner than did five equivalents of FGE on filter paper. Consequently, disruption of male orientation to calling females was significantly shorter (74 h) than disruption of orientation to FGE (146 h). However, FGE dispensed from a piezoelectric microsprayer at a rate equivalent to 50 pg of Z11-14:Ac·min–1 caught as many males as a calling female. At this delivery rate, two-choice microsprayer bioassays revealed that FGE containing the two known components at a 91:9 ratio was more attractive than a synthetic blend of these two pheromone components alone at the same ratio. In air permeated with Z11-14:Ac, disruption of orientation to this FGE lasted 74 h, equivalent to disruption of orientation to females. These results suggest the published two-component pheromone blend for P. limitata is likely incomplete, and in the absence of suitable synthetic attractants, we recommend use of calling females or FGE delivered using a microsprayer system for any laboratory examination of communication disruption in this species.

RESPONSE OF FOUR LEAFROLLER SPECIES (LEPIDOPTERA: TORTRICIDAE) TO SEX ATTRACTANTS IN BRITISH COLUMBIA ORCHARDS

1980 ◽  
Vol 112 (4) ◽  
pp. 427-430 ◽  
Author(s):  
H. F. Madsen ◽  
B. J. Madsen
Keyword(s):  
British Columbia ◽  
Sex Pheromones ◽  
Northern Region ◽  
Control Measures ◽  
Choristoneura Rosaceana ◽  
Sex Attractants ◽  
Predominant Species ◽  
Fruit Growing ◽  
Pandemis Limitata ◽  
Archips Argyrospilus

AbstractThe sex pheromones of Archips argyrospilus (Walker), Archips rosanus (L.), Choristoneura rosaceana Harris, and Pandemis limitata Rob. were evaluated in orchards with the objective of developing a method of monitoring leafroller population densities. The sex pheromones were specific for three species but not for C. rosaceana. This leafroller was captured in traps containing A. rosanus sex pheromone more frequently than in traps with its own attractant. The trapping program indicated that C. rosaceana and P. limitata were abundant in the southern fruit growing region of British Columbia and that A. argyrospilus and A. rosanus were the predominant species in the northern region. The traps can be used to identify leafroller species in orchards and to indicate when moths are active which may help in timing control measures.

scholarly journals Development of 2-phenylethanol plus acetic acid lures to monitor obliquebanded leafroller (Lepidoptera: Tortricidae) under mating disruption

2016 ◽  
Author(s):  
A. L. Knight ◽  
G. J. R. Judd ◽  
E. Basoalto ◽  
A. M. El-Sayed
Keyword(s):  
Acetic Acid ◽  
Sex Pheromone ◽  
Mating Disruption ◽  
Cydia Pomonella ◽  
Codling Moth ◽  
Choristoneura Rosaceana ◽  
Obliquebanded Leafroller ◽  
Baited Traps ◽  
Bisexual Lure ◽  
Pheromone Dispensers

AbstractWe evaluated the effectiveness of 2-phenylethanol (PET) in combination with acetic acid (AA) as a binary lure for monitoring male and female obliquebanded leafroller, Choristoneura rosaceana (Harris). Studies were conducted in apple, Malus domestica Borkhausen, orchards treated with or without sex pheromone dispensers for mating disruption (MD). Open polypropylene vials, closed membrane cups, and rubber septa loaded with AA and/or PET in varying amounts were first evaluated in a series of trapping experiments. Membrane cups loaded with 800 mg of PET were as effective as 10-mg septa, but longer lasting, and were comparable to the open vials. A membrane cup AA lure was effective in tests, but further work is needed to increase its release rate and extend its activity. Catches of codling moth, Cydia pomonella (L.), and C. rosaceana were unaffected by combining PET with (E,E)-8,10-dodecadien-1-ol, the sex pheromone of codling moth, pear ester, (E,Z)-2,4-ethyl-decadienoate, and AA lures. Adding (E)-4,8-dimethyl-1,3,7-nonatriene to this blend to enhance codling moth catch, significantly reduced catches of C. rosaceana. PET+AA was a more attractive binary lure than AA plus phenylacetonitrile (PAN) for C. rosaceana. The addition of PET or PAN to traps already baited with the sex pheromone of C. rosaceana significantly reduced male catches. Traps baited with PET+AA placed in blocks not treated with MD caught significantly fewer C. rosaceana than traps baited with sex pheromone. In comparison, sex pheromone-baited traps in MD blocks caught ≤ 1 male moth per season which was significantly lower than total moth (> 10) or female moth (≥ 3) catch in these blocks with PET+AA. A high proportion (> 70%) of trapped females were mated in both untreated and MD-treated orchards. Further refinement of this binary, bisexual lure using membrane cup technology may allow the establishment of action thresholds and improve management timings for C. rosaceana.

Captures of two leafroller moth species (Lepidoptera: Tortricidae) in traps baited with varying dosages of pheromone lures or commercial mating-disruption dispensers in untreated and pheromone-treated orchard plots

2005 ◽  
Vol 137 (1) ◽  
pp. 98-109 ◽  
Author(s):  
L.L. Stelinski ◽  
J.R. Miller ◽  
L.J. Gut
Keyword(s):  
United States ◽  
United States Of America ◽  
Mating Disruption ◽  
Choristoneura Rosaceana ◽  
Argyrotaenia Velutinana ◽  
Obliquebanded Leafroller ◽  
Rubber Septa ◽  
Single Standard ◽  
Membrane Type ◽  
Rope Dispensers

AbstractA 2-year study conducted in 0.6-ha apple (Malus domestica Borkh.) blocks examined the effects of treatment with pheromone rope dispensers on captures of the obliquebanded leafroller, Choristoneura rosaceana (Harris, 1841), and the redbanded leafroller, Argyrotaenia velutinana (Walker, 1863), in traps baited with varying dosages of pheromone lures or Isomate®-OBLR/PLR Plus pheromone rope dispensers. In untreated blocks, captures of male A. velutinana were high and did not differ among (i) traps baited with a standard lure loading used to monitor this pest, (ii) lure loadings 10 and 100 times the standard loading, and (iii) traps baited with an Isomate-OBLR/PLR Plus pheromone rope dispenser. In pheromone-treated blocks, captures of A. velutinana in traps were reduced 94%–99% for all loadings tested (up to 1000 times the standard loading). The results for C. rosaceana were different. In untreated blocks in 2002, traps baited with 10 or 30 standard lures captured significantly more C. rosaceana than traps baited with a single standard lure; however, in 2003, traps baited with the standard lure loading captured significantly more moths than traps baited with 100 and 1000 times the standard loading. Also, traps baited with Isomate-OBLR/PLR Plus pheromone rope dispensers captured significantly fewer C. rosaceana than traps with standard lures in untreated blocks. In pheromone-treated blocks, traps baited with standard monitoring lures and lures with higher loadings (10 and 1000 times the standard) captured equivalent numbers of C. rosaceana; the capture of moths was reduced by only 50%–71%. We conclude that Isomate-OBLR/PLR Plus pheromone rope dispensers deployed in Michigan, United States of America, are effective in disrupting orientation of A. velutinana; however, they are not very effective for C. rosaceana. In addition, increasing lure loading above that of 1× monitoring lures (rubber septa or membrane type) does not appear to reliably increase the effectiveness of monitoring of males of either leafroller species in orchards where pheromone ropes are deployed at recommended densities.

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