Biology and Bionomics of Dusky Cotton Bug (Oxycarenus laetus) (Lygaeidae: Hemiptera) on Three Different Hosts
Biology and Bionomics of Dusky Cotton Bug (Oxycarenus laetus) (Lygaeidae: Hemiptera) on Three Different Hosts
Muhammad Sarmad, Syed Muhammad Zaka* and Syed Muhammad Tahir Abbas Shah
ABSTRACT
The dusky cotton bug, Oxycarenus laetus Kirby. (Lygaidae: Hemiptera) had become a critical pest of cotton crop. Dusky cotton bug feeds on leaves, stems and seeds of host plants. Being a serious pest of many important crops, the present work will study on biology and bionomics of O. laetus on three different hosts Gossypium hirsutum, Abelmoschus esculentus and Helianthus annuus. Shorter nymphal duration was observed on Gossypium hirsutum 20.00±0.14 days as compared to Abelmoschus esculentus 21.00±0.26 days and Helianthus annuus 23.80±0.20 days. The longer adult life was observed on G. hirsutum (female 13.40±0.76 days and male 12.20±0.22 days) as compared to A. esculentus (female 9.40±0.40 days and male 8.20±0.37 days) and H. annuus (female 11.40±0.51 days and male 10.20±0.58 days). Fecundity (mean number of eggs) was significantly highestin case of G. hirsutum (16.33±0.88)as compared to A. esculentus (11.67±0.67) and H. annuus (6.67±0.33). Biology and bionomic study on different hosts will help the researchers make IPM strategies.
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August 2020
Vol. 52, Iss. 4, Pages 1225-1630
