Biological and life table parameters of diamondback moth, Plutella xylostella (L.) (Lepidoptera: Yponomeutidae) from five different geographical regions of India

2021 ◽  
Author(s):  
Mandeep Kaur ◽  
Meena Thakur ◽  
K. C. Sharma
Keyword(s):  
Life Table ◽  
Plutella Xylostella ◽  
Diamondback Moth ◽  
Life Table Parameters ◽  
Geographical Regions

scholarly journals Comparative analysis of life tables of Bactrocera tau (Diptera: Tephritidae) collected from different geographical regions of North India

2017 ◽  
Vol 9 (2) ◽  
pp. 998-1001
Author(s):  
Priyanka Thakur ◽  
K.C. Sharma ◽  
Deepali Bakshi
Keyword(s):  
Life Table ◽  
Life Histories ◽  
Management Practices ◽  
Fruit Fly ◽  
North India ◽  
Multiplication Rate ◽  
Life Table Parameters ◽  
Geographical Variations ◽  
Rate Of Increase ◽  
Geographical Regions

The tomato fruitfly, Bactrocera tau (Walker) (Diptera: Tephritidae) is one of the most important pests of the family Cucurbitaceae. Toinvestigate local adaptation, we measured the variations in life-histories and life-table parameters among populations from five different geographical regions of North India, Ludhiana (262 mt amsl), Solan (1,502 mt amsl), Hisar (215 mt amsl), Pantnagar (344 mt amsl) and Jaach (733 mt amsl). The principal components analysis showed the life-history and life-table parameters of B. tau differed among the five geographical populations. The highest fecundity of 233.20 eggs/female was recorded in the Jaach population and was statistically at par with Hisar (209.21 eggs/female) followed by Solan (202.60 eggs/female), Pantnagar (178.60 eggs/female) and Ludhiana population (105.88 eggs/female). The total developmental period among the five populations of B. tau was the longest for the Pantnagar population (16.20 days) followed by Solan (13.90 days), Hisar (12.60 days), Ludhiana (12.30 days) and Jaach (11.60 days). The true intrinsic rate of natural increase (rm) was 0.120, 0.138, 0.140, 0.116 and 0.153 for the respective geographical regions while the finite rate of increase (λ) was 1.13, 1.15, 1.15, 1.12 and 1.16, thus indicating that the fruit fly from Jaach location is more reproductive than the other five geographical regions of North India. Since the study will be useful in knowing the multiplication rate of fruit fly in specific area, accordingly the management practices for this species can be formulated on the bases of these studies. The results thus indicated the geographical variations among different populations of B. tau.

scholarly journals Diversity of Culturable Gut Bacteria of Diamondback Moth, Plutella Xylostella (Linnaeus) (Lepidoptera: Yponomeutidae) Collected From Different Geographical Regions of India

2021 ◽  
Author(s):  
Mandeep Kaur ◽  
Meena Thakur ◽  
Vinay Sagar ◽  
Ranjna Sharma
Keyword(s):  
Plutella Xylostella ◽  
Climatic Factors ◽  
Diamondback Moth ◽  
Gut Bacteria ◽  
Bacterial Isolates ◽  
Geographical Variations ◽  
Geographical Regions ◽  
The Status ◽  
Insect Gut ◽  
Insect Fitness

Abstract Diamondback moth, Plutella xylostella is one of the important pests of cole crops, the larvae of which cause damage to leaves from seedling stage to the harvest thus reducing the quality and quantity of the yield. The insect gut posses a large variety of microbial communities among which, the association of bacteria is the most spread and common. Due to variations in various agro-climatic factors, the insect often assumes the status of major pest. These geographical variations in insects influence various biological parameters including insecticide resistance due to diversity of microbes/bacteria. The diverse role of gut bacteria in insect fitness traits has now gained perspectives for biotechnological exploration. The present study was aimed to determine the diversity of larval gut bacteria of diamondback moth collected from five different geographical regions of India. The gut bacteria of this pest were found to be influenced by different geographical regions. A total of 14 larval gut bacterial isolates were obtained. Majority of these bacteria belong to Enterobacteriaceae followed by Yersiniaceae, Morganellaceae and Enterococcaceae. Phylogeny analysis of all the bacterial isolates collected from five different geographical regions of India revealed that all the isolated strains are resolved in well-defined clades with their closest type species.

Geographical Variations in Life Histories of House Flies, Musca domestica (Diptera: Muscidae), in Punjab, Pakistan

2019 ◽  
Vol 56 (5) ◽  
pp. 1225-1230 ◽  
Author(s):  
Hafiz Azhar Ali Khan ◽  
Muhammad Umer Khan ◽  
Amara Nasiba ◽  
Saira Riaz ◽  
Maria Altaf
Keyword(s):  
Life History ◽  
Life Table ◽  
Musca Domestica ◽  
Life History Traits ◽  
Population Increase ◽  
Lower Latitude ◽  
Life Table Parameters ◽  
Net Reproductive Rate ◽  
Geographical Variations ◽  
Geographical Regions

Abstract Musca domestica Linnaeus is an important public health pest with the ability to adapt to diverse climates. Assessment of variations in biology and life-history traits of insects along geographical gradients is important for a successful management plan in different regions. We investigated life-history traits and life table parameters of M. domestica from six different geographical regions of Punjab, Pakistan: Rahim Yar Khan (RYK), Bahawalpur (BWP), Multan (MTN), Lahore (LHR), Gujrat (GJT), and Murree (MRE). Overall, M. domestica from localities of lower latitude and elevations with higher mean temperatures completed their development faster than those from localities of higher latitude and elevations with lower mean temperatures. The immature developmental time was the longest for the MRE population that was collected from higher latitude and elevation with cooler climate, whereas the shortest for the RYK population from lower latitude with warmer climate. Pupal weights were heavier for the RYK, BWP, and MTN populations, all were from the lowest latitude and elevations with warmer climate, compared with rest of the field populations. Similarly, rate of adult eclosion, fecundity, egg hatching, longevity, and life table parameters such as intrinsic rate of population increase, mean relative growth rate, net reproductive rate, and biotic potential were significantly higher for the RYK, BWP, and MTN populations compared with the GJT, LHR, and MRE populations of M. domestica. The current results will probably be of importance when planning management of M. domestica in different geographical regions of Pakistan.

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