Implementation of pheromone traps in detecting click beetles population level in East Croatia

2007 ◽  
Vol 35 (2) ◽  
pp. 513-516 ◽  
Author(s):  
Marija Ivezić ◽  
Emilija Raspudić ◽  
Mirjana Brmež ◽  
Stjepan Pančić ◽  
Ivana Majić
Keyword(s):  
Population Level ◽  
Pheromone Traps ◽  
Click Beetles

scholarly journals Do pheromone trapping always reflect Ips typographus (L.) population level? A study from the Tatra National Park in Poland

2021 ◽  
Vol 63 (1) ◽  
pp. 36-47
Author(s):  
Wojciech Grodzki
Keyword(s):  
National Park ◽  
Population Level ◽  
Wind Damage ◽  
Physiological Status ◽  
Pheromone Traps ◽  
Protection Zone ◽  
Pheromone Trapping ◽  
Dead Trees ◽  
Active Protection ◽  
Tatra National Park

Abstract Pheromone traps are used for monitoring I. typographus populations in Norway spruce stands of the Tatra National Park (TPN) in Poland. The presented study is based on the set of pheromone traps of precisely known location (23) located in the whole area of the TPN and operated continuously in 2010–2019. The data on the captures of beetles were compared with two kinds of data concerning the mortality: the area covered by standing dead trees (airborne photographs) in the no-intervention zone, and the volume of trees infested by bark beetles processed in the active protection zone. No relationship was found between the mean numbers of beetles captured yearly in all pheromone traps in the whole TPN area and the volume of infested trees removed from the stands in the active protection zone. The captures in the two selected study areas were correlated with the area of spots with dead trees in the 500 m circle around the traps, however, this correlation is not statistically significant. There is no relation of captures to the volume of processed infested trees. The captures decreased in the growing seasons after the wind damage, and increased markedly after the drought started in 2015. The results of pheromone trapping are affected by several factors, as wind damage and defence potential of trees resulting from their physiological status. Pheromone traps represent valuable source of information about the bark beetle I. typographus population dynamics, although the collected data do not enable direct definition of its population level, especially in the protected areas with different and unstable (changed in 2017) approach to the protection of stands. As most of the information on beetles is captured in the first half of the growing season, the data collected till the end of July are sufficient for monitoring purposes; thus, the trapping should be reduced to the period May–July.

scholarly journals Distribution and relative abundance of the economically important click beetles (Elateridae: Agriotes sp.) in Hungary

2010 ◽  
pp. 53-60
Author(s):  
Antal Nagy ◽  
István Dávid ◽  
István Szarukán
Keyword(s):  
Relative Abundance ◽  
Abundant Species ◽  
Common Species ◽  
Pheromone Traps ◽  
Additional Species ◽  
Click Beetles ◽  
Click Beetle ◽  
Significant Damage

Click beetle (Elateridae: Agriotes sp.) species of 24 sites in different regions of Hungary were studied in 2010. A. brevis, A. sputator, A. obscurus, A. lineatus, A. rufipalpis and A. ustulatus were sampled by pheromone traps in maize fields. During the study more than 80000 beetles were caught. The three most common species were A. ustulatus, A. sputator and A. rufipalpis. The distribution of the studied species was uneven. In south Hungary A. ustulatus, A, rufipalpis and A. sputator were the three most abundant species. In the Transdanubia A. sputator was the most abundant. A. ustulatus reached higher abundance in only three sites (3/12). A. obscurus occurred only in west Hungary (Transdanubia). In eastern Hungary the abundance of studied species was higher. In this reason we have to monitor the populations of these pests and if it is necessary we have to take actions against them. In Transdanubia the abundance were generally lower but in many cases reached the threshold of significant damage. Beyond that 13 additional species were sampled so the total number of sampled species was 19.

scholarly journals Seasonal fluctuation of Agriotes lineatus, A. obscurus and A. sputator click beetles caught using pheromone traps in Poland

2018 ◽  
Vol 54 (No. 2) ◽  
pp. 118-127 ◽  
Author(s):  
Jakubowska Magdalena ◽  
Bocianowski Jan ◽  
Nowosad Kamila
Keyword(s):  
Seasonal Fluctuation ◽  
Weather Conditions ◽  
Assessment System ◽  
First Year ◽  
Pheromone Traps ◽  
Agricultural Crops ◽  
Trap Catch ◽  
Click Beetles ◽  
The Relationship ◽  
Agriotes Lineatus

The trap catch of Agriotes species and dynamics of the occurrence of adult click beetles using pheromone traps were determined, and the relationship between the dynamics of the caught wireworms and the placement of traps in selected agricultural crops was investigated. The study was conducted in 2011–2014 in the fields of different crops at five localities in two regions in Poland. The effectiveness of trapping the Elateridae beetles using pheromone traps varied in different localities. The results of the analysis of variance indicate statistically significant differences in the number of A. lineatus beetles only in individual years of research. On average, most individuals of this species were observed in the first year of observation (72.62), and the least – in 2012 (18.5). Statistically significant differences in the occurrence of beetles in each month were observed for all species except A. obscurus. No statistically significant differences between populations of the tested Agriotes species were observed in different localities. Their effectiveness was influenced largely by weather conditions. Pheromone traps work well and can be a part of an assessment system for the integrated pest management of Agriotes species.

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.

scholarly journals Potential Application of Pheromones in Monitoring, Mating Disruption, and Control of Click Beetles (Coleoptera: Elateridae)

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Gadi V. P. Reddy ◽  
Khanobporn Tangtrakulwanich
Keyword(s):  
Soviet Union ◽  
Former Soviet Union ◽  
Mating Disruption ◽  
Management Strategies ◽  
Pheromone Traps ◽  
Click Beetles ◽  
Sex Pheromone Traps ◽  
And Control ◽  
Potato Crops ◽  
Wireworm Damage

Wireworms, the larvae stage of click beetles (family, Elateridae), are serious soil dwelling pests of small grain, corn, sugar beet, and potato crops globally. Since the 1950s, conventional insecticides such as lindane provided effective and inexpensive protection from wireworms, and little integrated pest management research (IPM) was conducted. The removal of these products from the agricultural market, particularly Lindane, has resulted in increasing levels of wireworm damage to small grain, corn, and potato crops. The wireworm damage has become an increasing problem for growers, so the demand for a meaningful risk assessment and useful methods to restrict damage is increasing. However, due to the cryptic habitat of the wireworms, pest control is very difficult and leads to unsatisfying results. The prospective appropriateness of sex pheromone traps for employing management strategies against wireworm’s populations was first suggested with experimentation in Hungary and Italy. Simultaneously, considerable work has been done on the identification and use of pheromone traps to monitor population of click beetles. The work has been mostly done in European and former Soviet Union countries. For this paper, we reviewed what work has been done in monitoring the click beetle which was considered as pests and how the pheromones can be used in IPM to monitor and control wireworms/click beetles. Also, the possibilities of using the pheromone-baited traps for mating disruption and control tested in the fields were summarized.

scholarly journals Assessment of the Attraction Range of Sex Pheromone Traps to Agriotes (Coleoptera, Elateridae) Male Click Beetles in South-Eastern Europe

Insects ◽  
2021 ◽  
Vol 12 (8) ◽  
pp. 733
Author(s):  
Lorenzo Furlan ◽  
Barbara Contiero ◽  
Miklós Tóth
Keyword(s):  
Wind Direction ◽  
Pheromone Trap ◽  
Lower Number ◽  
Mass Trapping ◽  
Pheromone Traps ◽  
Click Beetles ◽  
Additional Information ◽  
Monitoring Tools ◽  
Sex Pheromone Traps ◽  
South Eastern Europe

The attraction range of YATLORf pheromone traps to adults of four species of Agriotes (A. brevis, A. sordidus, A. litigiosus, and A. ustulatus) was studied to provide additional information about the most harmful Agriotes species in Europe. Male click beetles were marked and released at different distances from a pheromone trap. The recapture rate was calculated and analyzed using analysis of variance. The recapture rate was significantly affected by distance, species, and wind direction. The recapture rate decreased as distance increased. The majority of beetles were caught from short distances (up to 10 m) within the first five days. A. brevis, a mainly crawling species, showed the lowest recapture rate. The wind direction affected the recovery rate, with a significantly lower number of beetles moving downwind from the release points. Maximum sampling ranges and effective sampling areas were calculated. The obtained estimations were low (53 to 86 m and 509 to 2602 m2, respectively) for all the considered Agriotes species, suggesting that they were unsuitable for use as mass trapping instruments to disrupt mating. However, it seems possible to use the traps not only as monitoring tools, but also as attract-and-kill strategies for most beetle populations.

P032 E-CIGARETTE AND CIGARETTE USE AMONG U.S. ADULT IBD PATIENTS: POPULATION-LEVEL SURVEY

2020 ◽  
Vol 158 (3) ◽  
pp. S102
Author(s):  
Ryan Suk ◽  
Heetae Suk ◽  
Kalyani Sonawane ◽  
Ashish Deshmukh
Keyword(s):  
Population Level ◽  
Cigarette Use

Cranial crassicaudiasis in two coastal dolphin species from South Africa is predominantly a disease of immature individuals

2020 ◽  
Vol 139 ◽  
pp. 93-102 ◽  
Author(s):  
MF Van Bressem ◽  
P Duignan ◽  
JA Raga ◽  
K Van Waerebeek ◽  
N Fraijia-Fernández ◽  
...  
Keyword(s):  
South Africa ◽  
Bone Development ◽  
Bottlenose Dolphins ◽  
Fatal Outcome ◽  
Population Level ◽  
Cape Coast ◽  
Osteolytic Lesions ◽  
Immune Mediated ◽  
Significant Difference ◽  
The Difference

Crassicauda spp. (Nematoda) infest the cranial sinuses of several odontocetes, causing diagnostic trabecular osteolytic lesions. We examined skulls of 77 Indian Ocean humpback dolphins Sousa plumbea and 69 Indo-Pacific bottlenose dolphins Tursiops aduncus, caught in bather-protecting nets off KwaZulu-Natal (KZN) from 1970-2017, and skulls of 6 S. plumbea stranded along the southern Cape coast in South Africa from 1963-2002. Prevalence of cranial crassicaudiasis was evaluated according to sex and cranial maturity. Overall, prevalence in S. plumbea and T. aduncus taken off KZN was 13 and 31.9%, respectively. Parasitosis variably affected 1 or more cranial bones (frontal, pterygoid, maxillary and sphenoid). No significant difference was found by gender for either species, allowing sexes to be pooled. However, there was a significant difference in lesion prevalence by age, with immature T. aduncus 4.6 times more likely affected than adults, while for S. plumbea, the difference was 6.5-fold. As severe osteolytic lesions are unlikely to heal without trace, we propose that infection is more likely to have a fatal outcome for immature dolphins, possibly because of incomplete bone development, lower immune competence in clearing parasites or an over-exuberant inflammatory response in concert with parasitic enzymatic erosion. Cranial osteolysis was not observed in mature males (18 S. plumbea, 21 T. aduncus), suggesting potential cohort-linked immune-mediated resistance to infestation. Crassicauda spp. may play a role in the natural mortality of S. plumbea and T. aduncus, but the pathogenesis and population level impact remain unknown.

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