Open AccessSeasonal population dynamics and daily activity of the Liriomyza solani Hering
Author(s) -
A. I. Sikura,
V. Gunchak,
М. Solomiichuk
Publication year - 2021
Publication title -
zahist ì karantin roslin
Language(s) - English
Resource type - Journals
eISSN - 2786-4960
pISSN - 1606-9773
DOI - 10.36495/1606-9773.2021.67.229-241
Subject(s) - pest analysis , population , abundance (ecology) , growing season , horticulture , biology , relative humidity , phytosanitary certification , positive correlation , air temperature , toxicology , ecology , geography , demography , meteorology , medicine , sociology
Goal. To investigate the seasonal dynamics of the abundance and daily activity of the Liriomyza solani Hering to determine the timing of phytosanitary monitoring of regulated pests of the genus Liriomyza.
Methods. Seasonal dynamics of abundance and daily activity of L. solani Hering adults were studied in 2018 on open ground plots where tomatoes are grown in Uzhgorod district of Transcarpathian region. Panel-type yellow glue traps were used for research. Replacement of traps and determination of the number of caught adults was carried out with an interval of 7—10 days during the entire growing season of plants. Summer activity of L. solani was studied from 6 am to 9 pm.
Results. The highest numbers of adults were observed in June — July, when 126 and 129 individuals were caught with yellow traps, respectively. At the same time, the average monthly air temperatures in June and July were 20.6°С and 21.6°С, respectively, with an average humidity of 69—67%. We also investigated the features of the seasonal dynamics of summer and the development of the L. solani depending on the rate of accumulation of the sums of effective and active temperatures during the growing season. The study of daily activity showed that there is a dependence of the pest activity on hydrothermal conditions. Thus, a positive correlation was observed between an increase in the number of caught adults and an increase in temperature (r = 0.910) and a negative correlation between a decrease in caught adults and an increase in moisture (r = –0.713).
Conclusions. The indicators of the sums of active and effective temperatures can serve as predictors for determining the timing of phytosanitary monitoring of agromizids. The temperature range for SAT indicators is 1209.7—3621.7°С, and SET is 486.5—1713.1°С. It has been established that in agrocenoses of open ground the most favorable period of the day for phytosanitary monitoring of pests of the genus Liriomyza is from 9.00 to 15.00 hours, when the activity of adults is greatest.