Temporal variation in abundance of male and female spruce budworms at combinatory associations of light traps and pheromone traps

2019 ◽  
Vol 167 (6) ◽  
pp. 526-533
Author(s):  
Marc Rhainds ◽  
Dan Lavigne ◽  
Troy Rideout ◽  
Jean‐Noël Candau
1979 ◽  
Vol 111 (9) ◽  
pp. 977-984 ◽  
Author(s):  
G.E. Bucher ◽  
G.K. Bracken

AbstractEfficiencies of light and pheromone traps were estimated from captures of moths emerging from pupae in the center of circular arrays of traps up to 200 m in radius. Light traps captured 1 insect for every 3.6 that passed through a linear meter at the trap, an efficiency factor of 0.28. This factor was constant for different insect densities. The pheromone traps were 3.5 times as efficient as light traps based on the captures of males only. The low efficiencies imply that the traps have a small zone of influence and several may be needed in a limited area to produce catches within reasonable confidence limits when populations are sparse and detection of increasing numbers has the greatest value.


2019 ◽  
pp. 1561-1565
Author(s):  
Clerison Regis Perini ◽  
Andres O. Angulo ◽  
Tania Sonia Olivares ◽  
Jonas Andre Arnemann ◽  
Jerson Vanderlei Carus Guedes

Since invasion of Helicoverpa armigera (Hübner) in South America, identification of Helicoverpa species became essential for Integrated Pest Management (IPM). Thus, we worked out on a pictorial key to identify tree important Helicoverpa species that occur in the Southern Cone of America, using new morphological characters from the prothoracic legs. Adult male and female of Helicoverpa zea (Boddie), H. armigera, and Helicoverpa gelotopoeon (Dyar) were used for identification. Prothoracic legs from moths were removed and images were taken (magnification of 25X) with scales and specialized scales. In addition, images (magnification of 50X) of prothoracic legs were used to measure the foretibia and epiphysis. The results showed that measurable characters were more reliable and accurate on male moths than female moths. For this reason, we will show only detailed results of male moths. Foretibia of H. zea were longer than H. gelotopoeon, but shorter than H. armigera. This size is visible with or without scales and specialized scales on males. Here, we show a first detailed description of protibial epiphysis. H. armigera has the longest epiphysis with fore margin pointed and with bristles terminating before the end of epiphysis. This illustrated pictorial key shown some first detailed descriptions of prothoracic legs. These characters are useful on integrated pest management programs of many crops to identify male representatives of Helicoverpa, which are captured on pheromone traps.


Zootaxa ◽  
2021 ◽  
Vol 5061 (2) ◽  
pp. 369-376
Author(s):  
THIAGO T. S. POLIZEI ◽  
NEUSA HAMADA

The monotypic genus Pagelmis Spangler, 1981 was described from six thousand specimens of Pagelmis amazonica Spangler, 1981 collected with blacklight traps in Ecuador. For many years the known distribution of this genus was restricted to its type-locality, and recently it was recorded in Venezuela, Suriname and Brazil (Roraima State). Now, 40 years after the description of the genus, we describe the second Pagelmis species, based on male and female collected in the Amazon forest (Amazonas State, Brazil). With the description of the second species in the genus we provide an emended diagnosis of Pagelmis. Since adults of this genus were previously collected only in light traps, no habitat information was known. We collected adults of the new species in the first- and second-order streams with black, acidic water and sandy streambeds. The main substrates available in these streams were leaves and roots of riparian vegetation.  


1979 ◽  
Vol 111 (1) ◽  
pp. 91-95 ◽  
Author(s):  
Warren Steck ◽  
E. W. Underhill ◽  
M. D. Chisholm ◽  
C. C. Peters ◽  
H. G. Philip ◽  
...  

AbstractTraps baited with the sex pheromone of the bertha army worm moth, Mamestra configurata (Walker), were operated at 36 sites across the prairie provinces in 1976 and 1977. They captured ca. 15 times as many bertha moths as did light traps and were considered to constitute a useful method for detection of adults of this species.


Enfoque UTE ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 27-36
Author(s):  
Muhammad Arshad ◽  
Muhammad Irfan Ullah ◽  
Muhammad Wasim Abbas ◽  
Asad Abdullah ◽  
Usama Hassan

The pink bollworm, Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae) is an important insect pest of the cotton crop worldwide. Sex-pheromone and light traps were used to monitor the adult P. gossypiella population in Bt cotton field for the years 2017-18 at southern Punjab, Pakistan. The sampling of infested bolls was done to record the damage level of P. gossypiella. The sex-pheromone traps captured approximately 2-3 times more adults than light traps in all locations during 2017-18. For sex-pheromone traps, temperature showed negative and strong relation (R2 = 0.63-0.80) with trap catches. Fewer bolls (7.0-9.0%) were infested in plots where sex-pheromone traps were installed compared to check plots (32-37%). Therefore, the pheromone trapping proved an effective and eco-friendly tool for the monitoring and management of P. gossypiella. Our findings enable forecasting of seasonal P. gossypiella population providing additional information for the development of an integrated pest management program for this pest.


2013 ◽  
Vol 53 (3) ◽  
pp. 215-221 ◽  
Author(s):  
Magdalena Jakubowska ◽  
Jan Bocianowski

Abstract In recent years, a local, growing population of cutworm in agricultural fields with various plants such as vegetables, horticultural, and ornamental plants has been observed. The scope of our research covered the observation of two species of cutworms: Agrotis segetum (Schiff.) and A. exclamationis (L.), which are the most dominant species in Poland. Cutworms were monitored in the 2005-2009 season with the use of Delta type pheromone traps with synthetic sexual pheromone and self-catch traps with a light source. The purpose of the research was to determine the dependence between the dynamics of the catches and the location of the traps, in fields with sugar beet, winter barley, and winter wheat in two municipalities: Winna Góra and Więcławice for the two studied cutworm species. Moreover, we used light traps in our analysis of the two studied cutworm species’, flight dynamics in Poznań, Winna Góra, and Więcławice in the 2003-2006 time period. The overall results can be used for adjusting the currently used monitoring methods for short-term and long-term forecasting of cutworm flights, and for optimizing chemical control of the cutworm


2007 ◽  
Vol 139 (5) ◽  
pp. 700-712 ◽  
Author(s):  
Rebecca H. Hallett ◽  
Sheila A. Goodfellow ◽  
James D. Heal

AbstractIn 2002, two types of light traps were compared against sticky yellow cards for efficiency and selectivity in capturing adult swede midge Contarinia nasturtii (Kieffer) (Diptera: Cecidomyiidae). Incandescent light traps were more efficient at capturing swede midge than were sticky traps. Incandescent light traps were more selective than blacklight traps and required less time for processing of samples and identification of captured midges. Emergence (2003 and 2004) and pheromone (2004) traps were used to assess swede midge population dynamics. Captures from emergence traps indicate up to five overlapping emergence events for swede midge each year. Emergence traps captured swede midge earlier in the season than pheromone traps, but pheromone-trap captures continued later in the season than those in emergence traps. Pheromone traps are small and portable, easy to maintain, and capture significantly more swede midge than emergence traps.


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