Net- and Light trap catches of rice planthoppers and associated weather conditions in autumn.

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.

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

Polish Journal of Entomology ◽

10.2478/pjen-2014-0021 ◽

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.

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

Asian Journal of Research in Crop Science ◽

10.9734/ajrcs/2018/v2i430035 ◽

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.

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Bluetongue virus in a Nigerian dairy cattle herd: 1. Serological studies and correlation of virus activity to vector population

Journal of Hygiene ◽

10.1017/s0022172400028849 ◽

1983 ◽

Vol 90 (2) ◽

pp. 177-193 ◽

Cited By ~ 29

Author(s):

K. A. J. Herniman ◽

J. P. T. Boorman ◽

W. P. Taylor

Keyword(s):

Bluetongue Virus ◽

Light Trap ◽

Survival Rates ◽

Virus Transmission ◽

Neutralizing Antibody ◽

Decay Rates ◽

Vector Population ◽

Virus Activity ◽

Serological Studies ◽

Trap Catches

SUMMARYNewborn calves were bled at monthly intervals and examined for serum antibodies to bluetongue virus (BTV). Maternal immunity persisted for 3 months and it was possible to calculate decay rates for virus neutralizing antibody. Calves were subclinically infected with BTV within a few months of becoming susceptible and neutralization tests were used to deduce the serotype responsible. A profile of virus activity was built up over a 12 month period. Frequent light trap catches were used to examine the population dynamics of suspected Culicoides vector species. Two species, imicola and schultzei were present throughout the wet and dry seasons and survival rates were sufficiently long to account for virus transmission at any time of the year.

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