The developmental time and fecundity of Panonychus citri (McGregor 1916) (Acari: Tetranychidae) on Washington navel sweet orange (Citrus sinensis (L.) Osb.). | Research Article Turk J Agric For 33 (2009) 593-600 © TÜBİTAK doi: The biology and fecundity of the citrus red mite Panonychus citri (McGregor) (Acari: Tetranychidae) at different temperatures under laboratory conditions İsmail KASAP* Çanakkale Onsekiz Mart University, Agricultural Faculty, Department of Plant Protection, 17020 Çanakkale - TURKEY Received: Abstract: The developmental time and fecundity of Panonychus citri (McGregor 1916) (Acari: Tetranychidae) on Washington navel sweet orange (Citrus sinensis (L.) Osb.) leaves were determined at 15, 20, 25, 30 and 35 ± 1 °C, 65 ± 10% RH, and a 16:8-h (L:D) photoperiod under laboratory conditions. Total development time of P. citri females was , , , , and days at 15, 20, 25, 30, and 35 ± 1 °C, respectively. Total and daily egg production levels of P. citri were highest at 25 °C ( and eggs), followed by 20 °C ( and eggs) and 30 °C ( and eggs). The lowest total and daily egg production levels were at 15 °C ( and eggs). The development threshold for female eggs and egg to adult stages was °C and °C, respectively, while total effective temperature was 100 and degree-days, respectively. The intrinsic rate of increase (rm) at 30, 25, 20, and 15 °C was , , , and females -1 -1 female day , respectively. Key words: Citrus Red Mite, degree-day, development, life table, Panonychus citri Turunçgil Kırmızıörümceği Panonychus citri (McGregor) (Acari: Tetranychidae)’nin laboratuvar koşullarında farklı sıcaklıklarda biyolojisi ve üreme gücü Özet: Bu çalışmada, 15, 20, 25, 30 ve 35 ± 1 °C sıcaklık, % 65 ± 10 nem değerlerine ve 16:8 saat ışıklanma süresine ayarlı laboratuvar koşullarında, Turunçgil Kırmızıörümceği Panonychus citri (McGregor) (Acari: Tetranychidae)’nin biyolojisi ve üreme gücü araştırılmıştır. P. citri’nin 15, 20, 25, 30 ve 35 ± 1 °C sıcaklıklardaki gelişme süresi sırasıyla dişi bireyler için .
