Effect of density of pheromone sources, pheromone dosage and population pressure on mating of pink bollworm, Pectinophora gossypiella (Lepidoptera: Gelechiidae)

AbstractThe effect of density of the Shin-Etsu twist-tie rope pheromone formulation (PBW rope L®) on mating of female pink bollworm, Pectinophora gossypiella(Saunders) was tested in Israel. The success of mating disruption was evaluated during 1997 by the mating table technique, comparing the percentage of mating of virgin sentinel females in pheromone-treated and control plots. Under low pest population pressure application of ‘long-life’ formulation of P. gossypiellapheromone, PBW rope L®, spaced 9 m, 11 m and 14 m apart, resulted in very high suppression of mating (96.5–100%) and complete shut-down of pheromone trap catch. These application rates were much lower than those now prevailing in Israel and elsewhere. Spacing of ropes 20 m apart resulted in less effective mating disruption of 65% only, and shut-down of pheromone traps was also incomplete. The tests during 1998 were carried out at high pest population and efficacy of treatments was assessed by the reduction of male capture in traps in pheromone-treated plots relative to catches in the control. The distance between pheromone sources proved to be the most critical factor determining success. In both years, any spacing significantly greater than 10 m gave markedly less than complete trap catch shutdown/mating suppression. Pheromone dosages and population density were also important in determining mating success. Results obtained in this study indicate the possibility of reducing the number of pheromone sources per unit area and the total amount of pheromone as compared with that in use today, only at very low pest populations. However at high population levels, dispensers closely-spaced, with increased dosages of pheromone, are required.

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Evaluation of Shin-Etsu twist-tie rope dispensers by the mating table technique for disrupting mating of the cotton bollworm, Helicoverpa armigera (Lepidoptera: Noctuidae), and the pink bollworm, Pectinophora gossypiella (Lepidoptera: Gelechiidae)

Bulletin of Entomological Research ◽

10.1017/s0007485300025712 ◽

1998 ◽

Vol 88 (2) ◽

pp. 141-148 ◽

Cited By ~ 8

Author(s):

M Kehat ◽

L Anshelevich ◽

D Gordon ◽

M Harel ◽

E Dunkelblum

Keyword(s):

Helicoverpa Armigera ◽

Mating Disruption ◽

Pink Bollworm ◽

Pectinophora Gossypiella ◽

Cotton Bollworm ◽

Complete Suppression ◽

Helicoverpa Armígera ◽

Rope Dispensers ◽

High Level ◽

And Control

AbstractDifferent Shin-Etsu twist-tie rope formulations, containing either the cotton bollworm, Helicoverpa armigera (Hübner) pheromone or pink bollworm, Pectinophora gossypiella (Saunders) pheromone, or both, in the same rope, were tested in Israel for mating disruption. The success of mating disruption was evaluated by the mating table technique, comparing the percentage of mating of virgin sentinel females in pheromone-treated and control plots. Two variants of this technique were evaluated, one with two mating tables per plot, each containing five to seven females, and the other with six to eight mating tables per plot, with only one female per table. The latter method was more sensitive than the former, particularly at low population densities. Two tests were conducted in 1995 in order to compare a blend of five components of H. armigera pheromone with a blend of two components for mating disruption. The application consisted of 2000 ropes/ha, each with 80 mg pheromone. Evaluation by the two mating table methods showed clearly that the formulation containing two components was superior to the five-component blend for mating disruption, suppressing mating almost completely for 49 days. A new combined formulation, HPROPE, containing 175 mg of the H. armigera two component blend and 65 mg of P. gossypiella pheromone was tested in 1996 for mating disruption of both pests. Application of 625 ropes/ha caused a high level of suppression of mating of H. armigera females for at least 94 days and that of P. gossypiella females for 161 days. The pheromone release rates were c. 625 mg/day/ha for H. armigera and 162 mg/day/ha for P. gossypiella. A ‘long-life’ formulation of P. gossypiella pheromone, PBW rope LR, applied at 125 ropes/ha releasing 137 mg/day/ha achieved complete suppression of mating over 75 days. This release rate of P. gossypiella pheromone was much lower than that currently used in Israel (275 mg/day/ha). The present study indicates that mating of females of two moth pests with different pheromones can be disrupted by one combined formulation.

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Mating disruption of the pink bollworm Pectinophora gossypiella (Saund.) (Lepidoptera: Gelechiidae) using gossyplure PB-rope dispensers in cotton fields

Journal of Pest Science ◽

10.1007/s10340-004-0055-4 ◽

2004 ◽

Vol 77 (4) ◽

pp. 205-210 ◽

Cited By ~ 3

Author(s):

D. Lykouressis ◽

D. Perdikis ◽

C. Michalis ◽

A. Fantinou

Keyword(s):

Mating Disruption ◽

Pink Bollworm ◽

Pectinophora Gossypiella ◽

Cotton Fields ◽

Rope Dispensers

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Pheromone-Mediated Mating Disruption as Management Option for Cydia spp. in Chestnut Orchard

Insects ◽

10.3390/insects12100905 ◽

2021 ◽

Vol 12 (10) ◽

pp. 905

Author(s):

Chiara Ferracini ◽

Cristina Pogolotti ◽

Franco Rama ◽

Giada Lentini ◽

Valerio Saitta ◽

...

Keyword(s):

Management Strategy ◽

Mating Disruption ◽

Insect Pests ◽

Oviposition Behavior ◽

Trap Catch ◽

Male Adult ◽

Background Population ◽

Successful Control ◽

And Control ◽

Control Insect

(1) Background: Pheromone-based devices are successfully used to control insect pests in agriculture. (2) Methods: Investigations were conducted to evaluate the effectiveness of mating disruption (MD) to control the chestnut tortrix moths, Cydia fagiglandana and Cydia splendana. Surveys were performed in northern Italy in 2019–2020. MD was carried out using the pheromone dispenser Ecodian® CT. The effectiveness of MD was assessed by recording male adult catches in pheromone-baited sticky traps and larvae in chestnut fruits, comparing MD and control plots. (3) Results: The total number of trapped males was significantly lower in MD plots than in control ones, for all sites and years. Trap catch suppression in MD plots averaged 89.5% and 93.8% for C. fagiglandana and 57.4% and 81% for C. splendana in 2019 and 2020, respectively. The larval infestation rate in fruits did not vary between plots except for one site where a reduction of about 71% in the MD plot was recorded in 2019. (4) Conclusions: Low catches in MD plots turned out to be a good measure of the effectiveness of communication disruption, but no satisfactory data have been obtained regarding fruit infestation, highlighting how the reduction of male catches cannot always be considered as a reliable indicator of successful control. Specific investigations about background population density, dispersal and mating/oviposition behavior are thus essential for a viable management strategy.

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Control of the pink bollworm Pectinophora gossypiella by the mating disruption technique on cotton in a semi-arid region of Turkey

Phytoparasitica ◽

10.1007/s12600-010-0131-7 ◽

2010 ◽

Vol 39 (1) ◽

pp. 19-25 ◽

Cited By ~ 2

Author(s):

Levent Unlu ◽

Eyyup Mezreli

Keyword(s):

Arid Region ◽

Mating Disruption ◽

Pink Bollworm ◽

Pectinophora Gossypiella ◽

Semi Arid Region ◽

Semi Arid

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MATING DISRUPTION OF PINK BOLLWORM, PECTINOPHORA GOSSYPIELLA (SAUNDERS) USING PB ROPE DISPENSERS IN COTTON GROWING AREAS OF PUNJAB, PAKISTAN

Plant Protection ◽

10.33804/pp.003.03.3108 ◽

2019 ◽

Vol 3 (3) ◽

pp. 117-123

Author(s):

Zulfiqar Ali Ghauri ◽

Habib Anwar ◽

Faqir Ahmad

Keyword(s):

Mating Disruption ◽

Insect Pest ◽

Pink Bollworm ◽

Pectinophora Gossypiella ◽

Cotton Yield ◽

Control Field ◽

Sex Pheromone Traps ◽

Rope Dispensers ◽

Treated Plot ◽

Cotton Bolls

Pink bollworm, Pectinophora gossypiella (Saunders), (Lepidoptera: Gelechidae) is considered as a notorious and destructive pest in the world and can reduce cotton yield up to 30% if not managed properly. Insect pest management through mating disruption technique offers practically an ideal approach to combat the pests. In the present study, the efficacy of mating disruption dispensers (PB rope L) for the management of pink bollworm was evaluated and the percent infestation in bolls and leftover bolls was determined in the cotton growing areas of Punjab, Pakistan during 2017. The PB ropes @100 per acre were used for each treated field of approximately 50 acres with a block of 10 acres as a control plot in the same union council of the treated plot. Calculation was made by comparing infestation and cotton yield in treated field with that of control field. The PB rope significantly reduced both the number of males in the sex pheromone traps and cotton bolls damage. Results revealed that PB rope during the first pin square period (45 days after sowing) effectively minimized the damage even in leftover bolls. The yield of treated field was enhanced compared with control field by 31% in 2017. Infestation in leftover bolls was estimated by comparing cotton bolls collected from control field with bolls from the treated field. The results reflected 1.56% damage in control field and 0.30% damage in treated field with a difference of 1.26 (80% reduction in damage in treated plots). Result indicated that PB rope disrupted the pest mating effectively during July to October.

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