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• W3215981238 abstract "<b>Background and Objective:</b> The guava long scale insect <i>Lepidosaphes tapleyi</i> (Williams) (Hemiptera: Diaspididae) is considered one of the main destructive pests of guava around the world. Biological control represents a sustainable alternative for saving control of <i>L. tapleyi</i>. The main objective of the present work was to study the seasonal activity and evaluate the impacts of climatic factors on populations of the parasitoid, <i>Aphytis</i> <i>lepidosaphes</i>, during two successive years (2017/2018 and 2018/2019) in Esna district, Luxor Governorate, Egypt. <b>Materials and Methods:</b> Estimation of the relationship between the population density of <i>L. tapleyi</i> and <i>A. lepidosaphes</i> activity, by using different models of correlation and regression analyses. The estimate of the effects of climatic factors (daily mean max. temp., min. temp., mean of % relative humidity and mean of dew point) on seasonal activity of the parasitoid, <i>A. lepidosaphes</i>, during two successive years (2017/2018 and 2018/2019). <b>Results:</b> The results showed that the relationship between the population density of <i>L. tapleyi</i> and <i>A. lepidosaphes </i>activity was positive during both years. Furthermore, simple regression analysis indicated that the abundance of <i>A. lepidosaphes </i>was more highly correlated with the <i>L. tapleyi</i> population density in each whole year during the two successive years. The percentages of explained variance EV (%) indicated that all tested variables, i.e. daily mean maximum temperature, minimum temperature, relative humidity and dew point were responsible for 76.26 and 65.40% of the changes in parasitoid, respectively. Furthermore, the dew point was the most effective variable for the change in the parasitoid populations by 33.61 and 18.62%. <b>Conclusion:</b> The results showed that <i>A. lepidosaphes </i>had three peaks of seasonal abundance over the entire year. As well, the activity of <i>A. lepidosaphes</i> was more highly correlated with the <i>L. tapleyi </i>population size over the two successive years." @default.
• W3215981238 created "2021-12-06" @default.
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• W3215981238 date "2021-12-15" @default.
• W3215981238 modified "2023-09-25" @default.
• W3215981238 title "Aphytis lepidosaphes (Hymenoptera: Aphelinidae) as an Effective Parasitoid for Controlling the Lepidosaphes tapleyi (Williams)" @default.
• W3215981238 doi "https://doi.org/10.3923/pjbs.2021.1246.1255" @default.
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