Weather Conditions and Spore Trap Catches of Barley Mildew

1973 ◽  
Vol 22 (1) ◽  
pp. 1-10 ◽  
Author(s):  
L. P. Smith ◽  
R. R. Davies
Keyword(s):  
Weather Conditions ◽  
Spore Trap ◽  
Trap Catches

Factors affecting abundance and oviposition rates of a field population of the Old World screw-worm fly, Chrysomya bezziana (Diptera: Calliphoridae)

2004 ◽  
Vol 94 (4) ◽  
pp. 359-368 ◽  
Author(s):  
R.J. Mahon ◽  
H. Ahmad ◽  
K.G. Wardhaugh
Keyword(s):  
Weather Conditions ◽  
Total Rainfall ◽  
Old World ◽  
Factors Affecting ◽  
Malaysian Population ◽  
Early Evening ◽  
Catch Rates ◽  
Trap Catches ◽  
The Relationship ◽  
Chrysomya Bezziana

AbstractSentinel cattle and a grid of swormlure-baited sticky traps were used to monitor a Malaysian population of the Old World screw-worm fly, Chrysomya bezziana Villeneuve. Observations were carried out on an isolated cattle station at monthly intervals during the period August 1996 to June 2000. The number of flies caught was unaffected by weather conditions at the time of trapping, but was positively correlated with the total rainfall and the average daily air temperature prevailing 15–28 days earlier, when trapped flies were still juveniles. Trap catches were biased in favour of females, but daily catch rates of both sexes increased significantly the longer traps were open, suggesting that efficacy was related to the differential volatility of the chemicals comprising swormlure. Oviposition on sentinel cattle occurred mostly in late afternoon or early evening but increased significantly as the wound aged. Oviposition rates were positively correlated with female catch rates, but the relationship was curvilinear, suggesting that fly populations may be subject to some form of density-dependent constraint. Consistent differences in oviposition rates on sentinel cattle at different localities on the cattle station suggested the existence of highly clumped, quasi-stationary populations. Differences in trap catches between traps located in pastoral areas and those sited in nearby oil palm or rubber plantations supported this interpretation of the data. These findings are discussed in relation to the use of the sterile insect technique for the control of screw-worm fly infestations.

scholarly journals Explorative Data Analysis of Drosophila suzukii Trap Catches from a Seven-Year Monitoring Program in Southwest Germany

Insects ◽  
2018 ◽  
Vol 9 (4) ◽  
pp. 125 ◽  
Author(s):  
Felix Briem ◽  
Anto Dominic ◽  
Burkhard Golla ◽  
Christoph Hoffmann ◽  
Camilla Englert ◽  
...  
Keyword(s):  
Monitoring Program ◽  
Weather Conditions ◽  
Invasive Pest ◽  
Economic Losses ◽  
Drosophila Suzukii ◽  
Mild Winter ◽  
Annual Population ◽  
Five Phases ◽  
Trap Catches ◽  
Southwest Germany

Over the last decade, Drosophila suzukii Matsumura, an invasive pest of soft-skinned fruits, gradually established itself in Europe, often resulting in significant economic losses. In 2011, when D. suzukii was first described for Germany, the Julius Kühn Institut (JKI) started a monitoring program in southwest Germany to study the occurrence and activity of the fly. Capture data from late 2011–early 2018 from 100 traps were analyzed for the effect of weather and immediate habitat on trap captures at different times of the year. We identified five phases in the annual population development cycle of D. suzukii. We found that the mild winter of 2013/2014 helped the thorough establishment of D. suzukii in Germany. Habitat types in the immediate vicinity of the trap and local weather conditions had a strong influence on trap captures. Forest borders and hedges were found to provide adequate overwintering shelter for the flies. Trap captures in forests and hedges were generally higher than those of vineyards and orchards, even during the fruiting seasons. Summer capture rates were correlated with the number of heat days and precipitation. We also discuss briefly the limitations of using trap captures as representative of fly density in the field.

Studies in the effect of weather conditions on the activity and abundance of insect populations

1961 ◽  
Vol 244 (713) ◽  
pp. 331-378 ◽  
Keyword(s):  
Light Trap ◽  
Population Level ◽  
Weather Conditions ◽  
Logarithmic Scale ◽  
Scottish Highlands ◽  
Activity Effect ◽  
The Family ◽  
Insect Populations ◽  
South East England ◽  
Trap Catches

This paper is a statistical analysis of captures of insects every night for over 4 years in traps in a locality in the Scottish Highlands. It should be considered in relation to a similar account of work in south-east England (Williams 1951 a ). From the trap catches (on a logarithmic scale), and meteorological records taken alongside the traps, statistical analyses, chiefly by multiple regressions, were made to show (1) the relation between day to day changes in log catch and corresponding changes in temperature and wind, and (2) the relation between changes in mean log catch in the same month in different years and changes in rainfall and temperature in the three previous months. The former is an activity effect, and the latter a population effect. Details are given for total Diptera, for the bloodsucking flies of the family Simuliidae, and for total Lepidoptera in a light trap, and for total Diptera in a suction trap, this latter for activity only. The results show quantitatively the very high dependance, more so in some groups and at certain seasons, of the activity of insects on the current weather conditions, and of the population level on the previous weather. A fuller summary is included in the paper, pp. 367 to 369.

MONITORING POPULATION LEVELS OF EIGHT SPECIES OF NOCTUIDS WITH SEX-ATTRACTANT TRAPS IN SOUTHERN ALBERTA, 1978–1983: CONSISTENCY OF TRAP CATCHES AND PRECISION OF POPULATION ESTIMATES

1987 ◽  
Vol 119 (6) ◽  
pp. 557-566 ◽  
Author(s):  
J.R. Byers ◽  
D.L. Struble ◽  
G.B. Schaalje
Keyword(s):  
Sex Attractant ◽  
Late Summer ◽  
Population Level ◽  
Weather Conditions ◽  
Early Summer ◽  
Flight Period ◽  
Relative Population ◽  
Peridroma Saucia ◽  
Southern Alberta ◽  
Trap Catches

AbstractSex-attractant traps were used to monitor the relative abundances of eight species of cutworm and army worm moths at 81 locations in a 13 000-km2 (5000-mi2) area of southern Alberta from 1978 to 1983. Clover cutworm (Discestra trifolii (Hufn.)), variegated cutworm (Peridroma saucia (Hbn.)), bertha armyworm (Mamestra configurata Wlk.), and Leucania commoides Gn. were monitored during spring and early summer, and redbacked cutworm (Euxoa ochrogaster (Gn.)), darksided cutworm (Euxoa messoria (Harr.)), pale western cutworm (Agrotis orthogonia Morr.), and army cutworm (Euxoa auxiliaris (Grt.)) during late summer and fall.The ranking of moth catches among locations within years was highly consistent, indicating that the spatial pattern of abundance within the survey area remained stable during each flight period. The corollary is that differences in population levels among locations were being consistently detected. Most of the species also exhibited a considerable degree of consistency of pattern of abundance between consecutive years and to some extent over all years.Estimates of the variability associated with individual traps, between duplicate traps, and among locations were obtained for each species. The within-location variability was always much less than the among-location variability, indicating that a meaningful measure of the relative population level at each location was being obtained. When abundance levels approached economic thresholds the likelihood of moth catches in duplicate traps being within 20% of the mean catch for a location was usually greater than 80%. Year-to-year differences in mean trap catches were frequently significant at the 95% confidence level and the monitoring system could detect relatively small changes in population level between years. Season cumulative trap catches are a composite measure of abundance and the mate-searching activity of males. Weather conditions that restrict male activity are also likely to reduce oviposition by females. Cumulative trap catches may therefore be closely correlated with realized fecundity.

scholarly journals Effect of weather conditions on light-trap catches of Trichoptera in Hungary (Central Europe)

2014 ◽  
Vol 83 (4) ◽  
pp. 269-280
Author(s):  
László Nowinszky ◽  
Ottó Kiss ◽  
János Puskás
Keyword(s):  
Central Europe ◽  
Strong Influence ◽  
Light Trap ◽  
Weather Conditions ◽  
Maximum Temperature ◽  
Daily Maximum Temperature ◽  
Daily Maximum ◽  
Temperature Minimum ◽  
Trap Catch ◽  
Trap Catches

ABSTRACT The study deals with the effect of weather conditions on the light trap catch of 2 caddisflies (Trichoptera) species: Hydropsyche bulgaromanorum and Setodes punctatus. We found that the light trap catch of both species increased when the daily maximum temperature, minimum and average values of temperature was higher. The results can be written down with second- or third-degree polynomials. The fluctuation in temperature had no clear influence on the catch. The hydrothermal quotient has a strong influence on the catch of both species. Precipitation has no significant influence on the catch of the tested species.

scholarly journals Study of Paddy Stem Borers Population Dynamics and Influencing Environmental Factors through Light Trap

2019 ◽  
pp. 1-10
Author(s):  
Mubashar Hussain ◽  
Muhammad Yasir Ali ◽  
Muhammad Umer ◽  
Numan Ejaz ◽  
Muhammad Bilal ◽  
...  
Keyword(s):  
Insect Pests ◽  
Light Trap ◽  
Weather Conditions ◽  
Stem Borer ◽  
Rice Crop ◽  
Stem Borers ◽  
Yellow Stem Borer ◽  
Insect Trap ◽  
Rice Stem Borers ◽  
Trap Catches

Rice crop is affected by many insect pests like White Stem Borer, Yellow Stem Borer and Pink Stem Borer. Rice stem borers are main pests affecting rice crop from nursery to physiological maturity including them in key pests. These studies had been carried out to discover the encouraging and antagonistic boundaries of weather parameters for the rice stem borers. As per result of studies, the population was recorded higher from mid-March to 1st week of May and then it escalated again from 2nd week of August to a maximum in September in case of Yellow Stem Borer (Scirpophaga incertulus) and White Stem Borer (Scirpophaga innotata) of rice during the both years 2017-2018; while in case of Pink Stem Borer population recorded from mid-September to the last week of April in 2017 and lasted till 4th week of May 2018. On evaluating the weather conditions specially temperature and relative humidity, it was detected that insect trap catches noted inside a certain range of temperature that varies from 18-35°C in case of White Stem Borer and 17-34°C for Yellow stem borer of rice. Extreme catches were documented in April and September inside a temperature range of 26-32°C considering it ideal series of temperature for insect light trap catches and activity of yellow and white stem borer. However, in case of pink stem borer above 32°C no catch was observed.

scholarly journals The influence of meteorological factors on the hazel (Corylus L.) pollen concentration in Sosnowiec in the years 1997-2007

2012 ◽  
Vol 61 (2) ◽  
pp. 49-56 ◽  
Author(s):  
Katarzyna Dąbrowska-Zapart
Keyword(s):  
Relative Humidity ◽  
Pollen Season ◽  
Meteorological Factors ◽  
Pollen Grains ◽  
Weather Conditions ◽  
Zero Temperature ◽  
Spore Trap ◽  
Average Maximum ◽  
Pollen Seasons ◽  
Daily Concentration

An analysis of hazel pollen seasons in Sosnowiec was presented on the basis of data from the years 1997-2007. The research was conducted by means of the volumetric method using a Burkard-type spore trap. The duration of pollen seasons was determined by means of the 98% method. The research demonstrated statistically significant correlations between the average, maximum and minimum temperature, relative humidity as well as the number of days with sub-zero temperature and the beginning of the hazel pollen season. It was demonstrated that the duration of the pollen season depended on air relative humidity, insolation and precipitation during the season and the annual sum depended on the weather conditions of the year preceding pollen production and also the weather conditions two years earlier. Significant correlations were also found between weather conditions and the daily concentration of pollen grains. The daily concentration decreased when relative humidity was high and increased with high insolation and air temperature.

scholarly journals Identification and evaluation of the main risk periods of Botrytis cinerea infection on grapevine based on phenology, weather conditions and airborne conidia

2020 ◽  
Vol 158 (1-2) ◽  
pp. 88-98 ◽  
Author(s):  
E. González-Fernández ◽  
A. Piña-Rey ◽  
M. Fernández-González ◽  
M. J. Aira ◽  
F. J. Rodríguez-Rajo
Keyword(s):  
Botrytis Cinerea ◽  
Disease Risk ◽  
Weather Conditions ◽  
Infection Risk ◽  
Climatic Conditions ◽  
Airborne Spores ◽  
Spore Trap ◽  
Chemische Industrie ◽  
Commercial Study ◽  
Using Data

AbstractIn the present study, a new method for a decision-support system for fungicide administration against the pathogen Botrytis cinerea in vineyards was developed based on Integrated Pest Management principles which identified an infection risk before the appearance of disease symptoms. The proposed method is based on the combination of (i) the phenological observations of the main susceptible stages to infection, (ii) the airborne spores monitoring, (iii) the forecasting of the suitable meteorological conditions for B. cinerea spore germination during the subsequent 4–6 days after the spore detection. Aerobiological, phenological and meteorological analyses were carried out using data from 2008 to 2015 in a vineyard of Northwestern Spain. Aerobiological spore data were obtained using a Lanzoni VPPS-2000 pollen-spore trap. Phenological observations were conducted on 22 plants of Treixadura cultivar following the BBCH (Biologische Bundesanstalt für Land und Forstwirtschaft, Bundessortenamt und CHemische Industrie) scale. The Magarey generic fungal model was applied for the identification of the main meteorological suitable periods for infection within the susceptible phenological stages of flowering and ripening of berries. Our results showed that climatic conditions favoured fungal development during flowering, although a higher incidence of B. cinerea infection risk-periods occurred during the prior-to-harvest stage of ripening of berries, the most susceptible phenological stage to B. cinerea infection obtained by the proposed methodology. This approach enables more precise targeting in pesticide spraying and reduction in pesticide application from 4–5 to 2–3 times per year at our commercial study. It also illustrates the real-world benefits of integrated disease risk modelling.

Sign in / Sign up

Export Citation Format

Share Document