Effects of seasonal variation on the biology and morphology of the dusky cotton bug,Oxcarenus laetus (Kirby) |
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| Authors: | Muhammad Mithal Rind Samy Sayed Hakim Ali Sahito Khalid Hussain Rind Nadir Ali Rind Akhtar Hussain Shar Hidayat Ullah Peter Ondrisik Jana Ivanic Porhajosova Zihu GUO Mohamed Shahen |
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| Institution: | 1. Department of Zoology, Faculty of Natural Sciences, Shah Abdul Latif University, Khairpur, Sindh, Pakistan;2. Department of Science and Technology, University College-Ranyah, Taif University, B.O. Box 11099, Taif 21944, Saudi Arabia;3. Laboratory of Entomology, Date Palm Research Institute, Shah Abdul Latif University, Khairpur, Sindh, Pakistan;4. Department of Molecular Biology and Genetics, Shaheed Benazir Bhutto University, Shaheed Benazirabad, Pakistan;5. Department of Environment and Biology, Faculty of Agrobiology and Food Resources, Slovak University of Agriculture, Nitra, Slovakia;6. College of Life Science, Northwest A & F University, Yangling, Shaanxi, China;7. Department of Zoology, Faculty of Science, Tanta University, Tanta, Egypt |
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| Abstract: | The dusky cotton bug (Oxycarenus laetus, KIRBY) a pest of several crops. The effects of winter and summer on the biology and morphology was investigated. The sampled eggs of dusky cotton bug (DCB) were kept under controlled environment for biological and morphological investigations. In winter, the mating duration of DCB was observed longer significantly (74.2 days), egg development period (3.93 days), an egg laying period (3.6 days) and hatching period (6.66 days) noted longer in winter season. Interestingly, average number of hatched egg (16.8 days) observed significantly higher in summer and the percentage of the hatching of eggs (81.95%) were also observed higher in summer as compare to winter. Whereas, the longevity of all nymph stages in winter longer days as compare to summer nymph stages. Moreover, differences were also observed between male and female development days between winter and summer. In the winter, female DCB development was suggestively higher as compare to summer (24 days). Whereas, the developmental days were noted considerably more in winter for males as compare to summer (14.93 days). On other hand, for morphological parameters, no differences were observed between winter and summer population of DCB. |
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| Keywords: | Oxcarenus laetus Pest Cotton Winter Summer Nymph and adult |
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