SEX-SPECIFIC EMERGENCE OF IPS TYPOGRAPHUS L. (COLEOPTERA: SCOLYTIDAE) AND FLIGHT BEHAVIOR IN RESPONSE TO PHEROMONE SOURCES FOLLOWING HIBERNATION

1986 ◽  
Vol 118 (1) ◽  
pp. 59-67 ◽  
Author(s):  
Åke Lindelöw ◽  
Jan Weslien
Keyword(s):  
Sex Ratio ◽  
Pheromone Trap ◽  
Ips Typographus ◽  
Flight Behavior ◽  
Pheromone Traps ◽  
Factors Influencing ◽  
Emergence Patterns ◽  
Temporal And Spatial ◽  
Trap Catches ◽  
Dispersal Characteristics

AbstractEmergence patterns, sex ratios, and dispersal characteristics of Ips typographus L. (Coleoptera: Scolytidae) emerging from hibernation sites were studied under field conditions. A total of 8666 emerging beetles were caught in 14 tent-traps, covering brood tree stumps at 3 different hibernation sites. Samples of these beetles were sexed at frequent intervals. The proportion of females increased as emergence progressed and the overall proportion of females was 62%. A total of 3433 beetles emerging after hibernation were marked and released on 19 separate occasions. The recapture rates were 13 and 4% in nearby and distant pheromone traps, respectively. Recaptures were recorded at distances of up to 1800 m. Beetles were able to respond and fly to pheromone sources shortly after emergence without prior feeding or prolonged flight activity. Trapping and marking techniques, temporal and spatial emergence patterns, seasonal sex ratio changes, and factors influencing pheromone trap catches are discussed.

SOME FACTORS INFLUENCING PHEROMONE TRAP CATCHES OF THE EUROPEAN CORN BORER, OSTRINIA NUBILALIS (LEPIDOPTERA: PYRALIDAE)

1978 ◽  
Vol 110 (1) ◽  
pp. 51-55 ◽  
Author(s):  
D. G. R. McLeod ◽  
A. N. Starratt
Keyword(s):  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Pheromone Trap ◽  
Pheromone Traps ◽  
Rapid Loss ◽  
Corn Borer ◽  
Corn Borers ◽  
Factors Influencing ◽  
Lepidoptera Pyralidae ◽  
Trap Catches

AbstractA study was made of the reason for the fairly rapid loss of attractancy of pheromone traps for the European corn borer, Ostrinia nubilalis (Hübner). This loss in attractancy appeared to be attributable mainly to formation of an inhibitory or repellent substance(s). Although traps with a suspended pheromone dispenser were significantly more attractive than traps with the dispenser placed in contact with the adhesive, they still became relatively unattractive to male corn borers within approximately 1 week.

scholarly journals Flight initiation and flight activity in Prostephanus truncatus (Coleoptera: Bostrichidae)

1998 ◽  
Vol 88 (5) ◽  
pp. 545-552 ◽  
Author(s):  
D. Scholz ◽  
C. Borgemeister ◽  
R. H. Markham ◽  
H. M. Poehling
Keyword(s):  
Sex Ratios ◽  
Breeding Site ◽  
Pheromone Trap ◽  
Flight Activity ◽  
Prostephanus Truncatus ◽  
Pheromone Traps ◽  
Set Up ◽  
Trap Catches ◽  
Maize Cobs ◽  
Flight Initiation

AbstractIn an outdoor experimental set-up, the number of Prostephanus truncatus (Horn) flying from maize cobs was recorded over 38 observation weeks. Flight activity in the field was recorded for 50 weeks with three pheromone traps, each placed at c. 100–300 m from the first experimental set-up. Multiple regression analyses revealed that both flight initiation and flight activity were partly influenced by mean temperatures, but were not directly related. Flight initiation was mainly dependent on population density. An additional experiment showed that sex ratios among pheromone trap catches were not correlated with the number of beetles caught; sex ratios were female-biased throughout the year. Seasonal fluctuations in flight activity recorded with pheromone traps are mainly dependent on changes in the number and sizes of beetle populations in a given area, as well as on breeding site availability and suitability.

scholarly journals Selectivity of the oriental fruit moth sex pheromone trap in peach and apricot orchards

2010 ◽  
Vol 16 (2) ◽  
Author(s):  
K. Hári ◽  
B. Pénzes
Keyword(s):  
Sex Pheromone ◽  
Chemical Control ◽  
Pheromone Trap ◽  
External Morphology ◽  
Oriental Fruit Moth ◽  
Pheromone Traps ◽  
Sex Pheromone Traps ◽  
Fruit Orchards ◽  
Trap Catches ◽  
Male Genital

One of the most important pests of the stone fruit orchards is the oriental fruit moth (Grapholitha 1110/esta B.). Chemical control targeted against the young larvae is the most effective way of protection. so the ti ming of treatments has to be based on the observation of emergence. Emergence may be monitored with sex pheromone traps. It is already known from former publications, that the traps for oriental fruit moth are also effective in the case of the plum moth (Grapholitha f1111ebra11a Tr.), which external morphology is very similar to the oriental fruit moth. As the emergence of the oriental fruit moth in peach and apricot orchards has not been observed in detaib in Hungary, we started a s1Udy in this field. Our aim was to measure the selectivity of the sex pheromone traps. On the basis of examining more than 5000 males caught and the investigation of male genital ia. it could be established that the pheromone traps. Csalomon and Deltastop, for oriental fruit moth, caught the plum moth in the same ratio. The ratio of the oriental fruit moth and the plum moth trapped in the peach orchards was I: I . while in the apricot orchards the number of the caught plum moth males was seven times as many as that of the oriental fruit moths. Consequently, it can be established that data based on oriental fruit moth trap catches can not be used without additional investigations of genitalia for the prediction of larval hatch. The selectivity of the plum moth trap. used as a control. was acceptable in both orchards.

scholarly journals Movement of potato moth estimated by markrecapture experiments

2002 ◽  
Vol 55 ◽  
pp. 177-181 ◽  
Author(s):  
P.J. Cameron ◽  
G.P. Walker ◽  
A.R. Wallace ◽  
P.J. Wigley
Keyword(s):  
Pest Resistance ◽  
Pheromone Trap ◽  
Pheromone Traps ◽  
Release Point ◽  
Pooled Data ◽  
Fluorescent Powder ◽  
Dispersal Model ◽  
Standard Linear ◽  
Small Plot ◽  
Trap Catches

The movement of potato moth Phthorimaea operculella (Zeller) was investigated using moths marked with fluorescent powder and recaptured with sweep nets and pheromone traps In a small plot trial sweep netting recovered most marked moths within the release plot and both sweep and pheromone trap catches declined at distances of 20 and 42 m In commercial fields pheromone trap recaptures declined beyond distances of 40 m from the release point and may have been reduced by natural barriers Moths were recaptured at approximately 200 m both within the release crop and in separate crops Use of a standard linear dispersal model with pooled data from all three experiments suggested that only 10 of moths dispersed beyond 200 m but evidence for this model was not conclusive These results provide part of the information required for determining suitable locations of susceptible refuge crops which have been proposed for diluting pest resistance to insectresistant transgenic crops

RELATIONSHIPS AMONG PHEROMONE TRAP CATCHES OF MALE CORN EARWORM MOTHS (LEPIDOPTERA: NOCTUIDAE), EGG NUMBERS, AND PHENOLOGY IN CORN

1991 ◽  
Vol 123 (2) ◽  
pp. 271-281 ◽  
Author(s):  
M.A. Latheef ◽  
J.A. Witz ◽  
J.D. Lopez
Keyword(s):  
Cross Correlation ◽  
Pheromone Trap ◽  
Corn Earworm ◽  
Pheromone Traps ◽  
Mediating Effects ◽  
Large Numbers ◽  
Cross Correlation Analysis ◽  
Time Differential ◽  
Trap Catches ◽  
Lepidoptera Noctuidae

AbstractRelationships among catches of corn earworm moths, Helicoverpa (= Heliothis) zea (Boddie), in pheromone traps, numbers of corn earworm eggs, and corn ears with fresh silks were investigated in eight corn fields during a 2-year period in Brazos River Valley, Texas. Cross-correlation analysis indicated that the catches of corn earworm moths in pheromone traps were closely associated with egg numbers in seven of eight fields with a time differential varying between −1 to +2 days. Cross-correlation peaks for new silks versus eggs occurred with time differentials being mostly positive, indicating that corn earworm egg numbers reached a maximum after corn produced large numbers of fresh silks on ears.There was a weak but significant linear relationship between egg numbers and corn earworm catches in pheromone traps when corn was in the whorl stage of growth. A stepwise regression model of the form: log (eggs/ha + 1) = 3.71 + 0.22*log(S + 1)*log(T + 1) − 0.3*log(S + 1), where S = numbers of corn ears with new silks per hectare, and T = mean corn earworm moths per trap, explained 52.5% of the variance. These results emphasize the mediating effects of fresh silks on corn earworm oviposition on corn.

scholarly journals A potential mating disruption system for three New Zealand leafroller species

2009 ◽  
Vol 62 ◽  
pp. 398-398
Author(s):  
L.M. Cole ◽  
J.T.S. Walker ◽  
A.M. El-Sayed ◽  
P.L. Lo ◽  
N. Sharma
Keyword(s):  
New Zealand ◽  
Mating Disruption ◽  
Pheromone Trap ◽  
Export Market ◽  
Pheromone Traps ◽  
Fruit Damage ◽  
Multiple Species ◽  
Lightbrown Apple Moth ◽  
Trap Catches ◽  
Pheromone Blend

A dispenser incorporating a pheromone blend to disrupt three species of New Zealand leafrollers was developed for their control in Otago summerfruit orchards This control system was evaluated for suppression of leafroller activity in Hawkes Bay apple and summerfruit orchards over 2 years In 20078 dispensers were applied at 6001000/ha in two large organic apple orchards and activity of all three species in pheromone traps was recorded Dispensers achieved only 738 and 61 shutdown of lightbrown apple moth pheromone traps in Orchards A and B respectively Dispensers were modified to increase disruption of this species and were evaluated in similar trials on the same orchards in 20089 and achieved 984 and 909 trap shutdown respectively The same dispenser was also evaluated on four summerfruit orchards where it was applied to 1 ha plots in January 2009 at 1000 dispensers/ha Pheromone trap catches of lightbrown apple moth were reduced by 833100 over the following 3 months Further assessment of this multiple species mating disruption system is required to determine its value in managing the fruit damage and larval infestation risks to meet export market tolerances

A STUDY OF PHEROMONE TRAP CATCHES IN RELATION TO CODLING MOTH (LEPIDOPTERA: OLETHREUTIDAE) DAMAGE

1974 ◽  
Vol 106 (5) ◽  
pp. 525-537 ◽  
Author(s):  
H. Riedl ◽  
B. A. Croft
Keyword(s):  
Codling Moth ◽  
Pheromone Trap ◽  
Trap Catch ◽  
Sampling Device ◽  
Predictive Tool ◽  
Male Moth ◽  
Factors Influencing ◽  
The Many ◽  
Relationship Of ◽  
Trap Catches

AbstractA sex pheromone trap was studied as a quantitative sampling device in a biological monitoring scheme for codling moth populations in Michigan apple orchards. Factors influencing trap efficiency and the relationship of trap catch to adult moth density and the overall seasonal dynamics of L. pomonella are considered.By correlating seasonal male moth catches to absolute infestation levels at harvest it was possible to indicate the density response of male moth catches in the pheromone trap (Sectar 1). Catch response was non-linear and the trap ceased to be indicative of higher infestation levels when accumulative catch exceeded about 100 moths/trap. Also, accumulative trap catches from the first few weeks of the season (before damage appeared) correlated well with eventual infestation levels indicating possible use of the pheromone trap as a predictive tool. Of the many factors influencing trap catch size the number of moth productive trees serviced by a trap (trap/tree ratio) was shown to be of critical importance.

Monitoring of Gram Pod Borer, Helicoverpa armigera (Hübner) through Pheromone Traps in Different Modules of Short Duration Pigeonpea

2020 ◽  
Author(s):  
Amit Yadav ◽  
Ram . Keval ◽  
Abhishek . Yadav
Keyword(s):  
Helicoverpa Armigera ◽  
Agricultural Research ◽  
Pheromone Trap ◽  
Control Measures ◽  
Pheromone Traps ◽  
Larval Population ◽  
Pod Borer ◽  
Helicoverpa Armígera ◽  
Trap Catches ◽  
Helicoverpa Armigera Hubner

Present investigations were carried out during Kharif season of 2013-14 and 2014-15 at the Agricultural Research Farm, Banaras Hindu University, Varanasi to monitor the population of Helicoverpa armigera (Hubner) by using pheromone traps and to start appropriate control measures in time. The maximum numbers of moth catches were recorded during 44th (16.8 pheromone trap-1) and 45th (19.5 pheromone trap-1) standard week in all the modules during Kharif 2013 and 2014. Relationship between pheromone trap catches and egg population was found significant and positively correlated in all modules except M3 during 2013. In the succeeding year 2014, the correlation between pheromone trap catches and egg population was positive and significant only in case of M5. The correlation between pheromone trap catches and larval population was positive in all modules but significant in case of M1 during 2013. In the succeeding year 2014, the correlation between pheromone trap catches and larval population was positive in all modules but significant only in M5.

scholarly journals A Pheromone-Based Trapping System for Monitoring the Population of Cosmopolites Sordidus (Germar) (Coleoptera: Curculionidae)

2008 ◽  
Vol 48 (4) ◽  
pp. 515-527 ◽  
Author(s):  
Gadi Reddy ◽  
Zerlene Cruz ◽  
Fritz Naz ◽  
Rangaswamy Muniappan
Keyword(s):  
Population Level ◽  
Pheromone Trap ◽  
Northern Region ◽  
Cosmopolites Sordidus ◽  
Pheromone Traps ◽  
Medium Level ◽  
Quadratic Effects ◽  
Set Up ◽  
Basic Studies ◽  
Trap Catches

A Pheromone-Based Trapping System for Monitoring the Population ofCosmopolites Sordidus(Germar) (Coleoptera: Curculionidae)The banana root borerCosmopolites sordidus(Coleoptera: Curculionidae) is native to Malaysia and Indonesia but is found in nearly all banana-growing areas of the world. Studies were conducted to determine the pheromone trap efficacy, effect of shade on trap catches and to monitor the population ofC. sordidususing pheromones in Guam. In Guam, pheromone traps were used to monitor the population level ofC. sordidus.Before monitoring began, two basic studies were carried out, which established that pheromone-baited ramp traps positioned in the shade of the banana crop canopy caught significantly more adults than those placed in sunlight and that ramp traps baited with pheromone lures caught significantly more adults than did identical traps without pheromone lures. Ramp traps baited with pheromone lures were set up at each of 10 locations throughout the island in November 2005. Weekly counts were made of the borers caught by the pheromone traps. The data indicated higher population levels (>10 per week) in the northern region and low (<5 per week) to medium level (5-10 week) populations in the southern part of the island. These differences among sites were highly significant. Linear and quadratic effects of rainfall on the number of borers captured were statistically significant, but according to quadratic regression models, the significance was due to differences at just one site.

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