Population fluctuations of thrips (Thysanoptera) and their relationship to the phenology of rice in Babolsar (Mazandaran Province, Iran)
2018
Mona Rajabian Miri (Department of Plant Protection, Faculty of Crop Sciences, Sari University of Agricultural Sciences and Natural Resources, Sari, Iran) | Masoumeh Shayanmehr (Department of Plant Protection, Faculty of Crop Sciences, Sari University of Agricultural Sciences and Natural Resources, Sari, Iran) | Majid Mirab-balou (Department of Plant Protection, College of Agriculture, Ilam University, 69315–516, Ilam, Iran)
The objective of this study was to identify the species of thrips associated with rice crops in order to determine population fluctuation of the dominant species. Studies were conducted during the month of April to August in the year 2017 form different growth stages of rice in Babolsar city, Mazandaran Province (Northern Iran). Samplings were done from four fields located at two sites, KeyxaMahalle and MirBazar. A total of seven species of thrips belonging to four genera and two families (Thripidae and Phlaeothripidae) were identified. Amongst them, Haplothrips eragrostidis Priesner was the dominant species accounting for 75.47% in abundance. This was followed by Thrips hawaiiensis Morgan comprising 6.47%. The other species include Anaphothrips sudanensis Trybom, Frankliniella intonsa (Trybom), F. tenuicornis (Uzel), Thrips tabaci Lindeman and Haplothrips flavicinctus (Karny) which comprised of4.85%, 4.32%, 4.31%, 4.04% and 0.54% respectively. The maximum number of thrips species was found in the middle of July and minimum in the month of May. Assessment of thrips abundance in rice fields were started at the beginning of dough stage and were continued until complete maturity.
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