Species composition and population dynamics of some arthropod pests in cotton fields of irrigated and semi-arid regions of Punjab, Pakistan
The present study aimed to record seasonal dynamics and diversity of different insect pests in cotton agroecosystems. Two well-known cotton growing districts i.e. district Layyah and Vehari were selected for the study from the cotton belt of Punjab, Pakistan. Sampling was done bi-weekly for two cons...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-02-01
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| Series: | Saudi Journal of Biological Sciences |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S1319562X22004375 |
| _version_ | 1811170995522764800 |
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| author | Amir Nadeem Hafiz M. Tahir Azhar A. Khan Zeshan Hassan Arif M. Khan |
| author_facet | Amir Nadeem Hafiz M. Tahir Azhar A. Khan Zeshan Hassan Arif M. Khan |
| author_sort | Amir Nadeem |
| collection | DOAJ |
| description | The present study aimed to record seasonal dynamics and diversity of different insect pests in cotton agroecosystems. Two well-known cotton growing districts i.e. district Layyah and Vehari were selected for the study from the cotton belt of Punjab, Pakistan. Sampling was done bi-weekly for two consecutive years from July to October during 2018 and 2019. Sweep netting, visual counting, hand picking, wet finger method, beat sheets, aspirator and pitfall trapping methods were used for collection. Shannon-Wiener and Simpson indices were used to compute diversity while Menhinick and Margalef indices were used for the estimation of species richness. A total of 94,343 individuals representing 43 species, 40 genera, 28 families and 6 orders were recorded. Family Aleyrodidae dominated over other pest families. Bemisia tabaci (Gennadius, 1889) of family Aleyrodidae was the dominant species with 39.68% share among all pest species. Estimated species richness of all arthropod pest species belonging to both districts were about 94%. The densities of pests fluctuated with time. The peaks of sucking pest densities were observed in July and August while densities of chewing pests peaked in late September or early October each year. Population densities of jassids Amrasca biguttula (Ishida), armyworm Spodoptera litura (Fabricius), and pink bollworm Pectinophora gossypiella (Saunders), showed strong negative correlation with temperature, humidity and rainfall while thrips population density showed positive correlation with these parameters. Minor loss due to pests are acceptable everywhere, but it is only possible when their populations remain below their economic threshold levels. Present study will aid to design pest management strategies in cotton growing areas round the globe. |
| first_indexed | 2024-04-10T17:06:07Z |
| format | Article |
| id | doaj.art-4939b2266e184b6fba86057ae7edfef1 |
| institution | Directory Open Access Journal |
| issn | 1319-562X |
| language | English |
| last_indexed | 2024-04-10T17:06:07Z |
| publishDate | 2023-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Saudi Journal of Biological Sciences |
| spelling | doaj.art-4939b2266e184b6fba86057ae7edfef12023-02-06T04:05:29ZengElsevierSaudi Journal of Biological Sciences1319-562X2023-02-01302103521Species composition and population dynamics of some arthropod pests in cotton fields of irrigated and semi-arid regions of Punjab, PakistanAmir Nadeem0Hafiz M. Tahir1Azhar A. Khan2Zeshan Hassan3Arif M. Khan4Department of Zoology, Government College University, Lahore, PakistanDepartment of Zoology, Government College University, Lahore, PakistanCollege of Agriculture, Bahauddin Zakariya University, Bahadur, Sub Campus Layyah, Pakistan; Corresponding author.College of Agriculture, Bahauddin Zakariya University, Bahadur, Sub Campus Layyah, PakistanDepartment of Biotechnology, University of Sargodha, Sargodha, PakistanThe present study aimed to record seasonal dynamics and diversity of different insect pests in cotton agroecosystems. Two well-known cotton growing districts i.e. district Layyah and Vehari were selected for the study from the cotton belt of Punjab, Pakistan. Sampling was done bi-weekly for two consecutive years from July to October during 2018 and 2019. Sweep netting, visual counting, hand picking, wet finger method, beat sheets, aspirator and pitfall trapping methods were used for collection. Shannon-Wiener and Simpson indices were used to compute diversity while Menhinick and Margalef indices were used for the estimation of species richness. A total of 94,343 individuals representing 43 species, 40 genera, 28 families and 6 orders were recorded. Family Aleyrodidae dominated over other pest families. Bemisia tabaci (Gennadius, 1889) of family Aleyrodidae was the dominant species with 39.68% share among all pest species. Estimated species richness of all arthropod pest species belonging to both districts were about 94%. The densities of pests fluctuated with time. The peaks of sucking pest densities were observed in July and August while densities of chewing pests peaked in late September or early October each year. Population densities of jassids Amrasca biguttula (Ishida), armyworm Spodoptera litura (Fabricius), and pink bollworm Pectinophora gossypiella (Saunders), showed strong negative correlation with temperature, humidity and rainfall while thrips population density showed positive correlation with these parameters. Minor loss due to pests are acceptable everywhere, but it is only possible when their populations remain below their economic threshold levels. Present study will aid to design pest management strategies in cotton growing areas round the globe.http://www.sciencedirect.com/science/article/pii/S1319562X22004375CottonBiodiversitySucking-pestsChewing-pestsPopulation-dynamics |
| spellingShingle | Amir Nadeem Hafiz M. Tahir Azhar A. Khan Zeshan Hassan Arif M. Khan Species composition and population dynamics of some arthropod pests in cotton fields of irrigated and semi-arid regions of Punjab, Pakistan Saudi Journal of Biological Sciences Cotton Biodiversity Sucking-pests Chewing-pests Population-dynamics |
| title | Species composition and population dynamics of some arthropod pests in cotton fields of irrigated and semi-arid regions of Punjab, Pakistan |
| title_full | Species composition and population dynamics of some arthropod pests in cotton fields of irrigated and semi-arid regions of Punjab, Pakistan |
| title_fullStr | Species composition and population dynamics of some arthropod pests in cotton fields of irrigated and semi-arid regions of Punjab, Pakistan |
| title_full_unstemmed | Species composition and population dynamics of some arthropod pests in cotton fields of irrigated and semi-arid regions of Punjab, Pakistan |
| title_short | Species composition and population dynamics of some arthropod pests in cotton fields of irrigated and semi-arid regions of Punjab, Pakistan |
| title_sort | species composition and population dynamics of some arthropod pests in cotton fields of irrigated and semi arid regions of punjab pakistan |
| topic | Cotton Biodiversity Sucking-pests Chewing-pests Population-dynamics |
| url | http://www.sciencedirect.com/science/article/pii/S1319562X22004375 |
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