Bionomics of the oriental latrine fly Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae): temporal fluctuation and reproductive potential

© 2018 The Author(s). Background: Chrysomya megacephala is a blow fly species of medical and forensic importance worldwide. Understanding its bionomics is essential for both designing effective fly control programs and its use in forensic investigations. Methods: The daily flight activity, seasonal...

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Main Authors: Narin Sontigun, Kabkaew L. Sukontason, Tunwadee Klong-Klaew, Sangob Sanit, Chutharat Samerjai, Pradya Somboon, Sa Nguansak Thanapornpoonpong, Jens Amendt, Kom Sukontason
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Published: 2018
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http://cmuir.cmu.ac.th/jspui/handle/6653943832/58759
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spelling th-cmuir.6653943832-587592018-09-05T04:34:22Z Bionomics of the oriental latrine fly Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae): temporal fluctuation and reproductive potential Narin Sontigun Kabkaew L. Sukontason Tunwadee Klong-Klaew Sangob Sanit Chutharat Samerjai Pradya Somboon Sa Nguansak Thanapornpoonpong Jens Amendt Kom Sukontason Immunology and Microbiology Medicine © 2018 The Author(s). Background: Chrysomya megacephala is a blow fly species of medical and forensic importance worldwide. Understanding its bionomics is essential for both designing effective fly control programs and its use in forensic investigations. Methods: The daily flight activity, seasonal abundance related to abiotic factors (temperature, relative humidity and rainfall) and reproductive potential of this species was investigated. Adult flies were sampled twice a month for one year from July 2013 to June 2014 in three different ecotypes (forest area, longan orchard and palm plantation) of Chiang Mai Province, northern Thailand, using semi-automatic funnel traps. One-day tainted beef offal was used as bait. Results: A total of 88,273 flies were sampled, of which 82,800 flies (93.8%) were caught during the day (from 06:00 to 18:00 h); while 5473 flies (6.2%) were caught at night (from 18:00 to 06:00 h). Concurrently, the abundance of C. megacephala was higher in the forest area (n = 31,873; 36.1%) and palm plantation (n = 31,347; 35.5%), compared to the longan orchard (n = 25,053; 28.4%). The number of females was significantly higher than that of males, exhibiting a female to male sex ratio of 2.36:1. Seasonal fluctuation revealed the highest abundance of C. megacephala in summer, but low numbers in the rainy season and winter. Fly density was significantly positively correlated with temperature, but negatively correlated with relative humidity. No correlation between numbers of C. megacephala with rainfall was found. Activity occurred throughout the daytime with high numbers from 06:00 to 18:00 h in summer and 12:00 to 18:00 h in the rainy season and winter. As for the nocturnal flight activity, a small number of flies were collected in summer and the rainy season, while none were collected in the winter. Dissection of the females indicated that fecundity was highest during the rainy season, followed by winter and summer. Conclusions: Since the assessment of daily, seasonal activity and the reproductive potential of C. megacephala remains a crucial point to be elucidated, this extensive study offers insights into bionomics, which may be considered for integrated fly control strategies and forensic entomology issues. 2018-09-05T04:30:22Z 2018-09-05T04:30:22Z 2018-07-13 Journal 17563305 2-s2.0-85049994143 10.1186/s13071-018-2986-2 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85049994143&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/58759
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Immunology and Microbiology
Medicine
spellingShingle Immunology and Microbiology
Medicine
Narin Sontigun
Kabkaew L. Sukontason
Tunwadee Klong-Klaew
Sangob Sanit
Chutharat Samerjai
Pradya Somboon
Sa Nguansak Thanapornpoonpong
Jens Amendt
Kom Sukontason
Bionomics of the oriental latrine fly Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae): temporal fluctuation and reproductive potential
description © 2018 The Author(s). Background: Chrysomya megacephala is a blow fly species of medical and forensic importance worldwide. Understanding its bionomics is essential for both designing effective fly control programs and its use in forensic investigations. Methods: The daily flight activity, seasonal abundance related to abiotic factors (temperature, relative humidity and rainfall) and reproductive potential of this species was investigated. Adult flies were sampled twice a month for one year from July 2013 to June 2014 in three different ecotypes (forest area, longan orchard and palm plantation) of Chiang Mai Province, northern Thailand, using semi-automatic funnel traps. One-day tainted beef offal was used as bait. Results: A total of 88,273 flies were sampled, of which 82,800 flies (93.8%) were caught during the day (from 06:00 to 18:00 h); while 5473 flies (6.2%) were caught at night (from 18:00 to 06:00 h). Concurrently, the abundance of C. megacephala was higher in the forest area (n = 31,873; 36.1%) and palm plantation (n = 31,347; 35.5%), compared to the longan orchard (n = 25,053; 28.4%). The number of females was significantly higher than that of males, exhibiting a female to male sex ratio of 2.36:1. Seasonal fluctuation revealed the highest abundance of C. megacephala in summer, but low numbers in the rainy season and winter. Fly density was significantly positively correlated with temperature, but negatively correlated with relative humidity. No correlation between numbers of C. megacephala with rainfall was found. Activity occurred throughout the daytime with high numbers from 06:00 to 18:00 h in summer and 12:00 to 18:00 h in the rainy season and winter. As for the nocturnal flight activity, a small number of flies were collected in summer and the rainy season, while none were collected in the winter. Dissection of the females indicated that fecundity was highest during the rainy season, followed by winter and summer. Conclusions: Since the assessment of daily, seasonal activity and the reproductive potential of C. megacephala remains a crucial point to be elucidated, this extensive study offers insights into bionomics, which may be considered for integrated fly control strategies and forensic entomology issues.
format Journal
author Narin Sontigun
Kabkaew L. Sukontason
Tunwadee Klong-Klaew
Sangob Sanit
Chutharat Samerjai
Pradya Somboon
Sa Nguansak Thanapornpoonpong
Jens Amendt
Kom Sukontason
author_facet Narin Sontigun
Kabkaew L. Sukontason
Tunwadee Klong-Klaew
Sangob Sanit
Chutharat Samerjai
Pradya Somboon
Sa Nguansak Thanapornpoonpong
Jens Amendt
Kom Sukontason
author_sort Narin Sontigun
title Bionomics of the oriental latrine fly Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae): temporal fluctuation and reproductive potential
title_short Bionomics of the oriental latrine fly Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae): temporal fluctuation and reproductive potential
title_full Bionomics of the oriental latrine fly Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae): temporal fluctuation and reproductive potential
title_fullStr Bionomics of the oriental latrine fly Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae): temporal fluctuation and reproductive potential
title_full_unstemmed Bionomics of the oriental latrine fly Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae): temporal fluctuation and reproductive potential
title_sort bionomics of the oriental latrine fly chrysomya megacephala (fabricius) (diptera: calliphoridae): temporal fluctuation and reproductive potential
publishDate 2018
url https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85049994143&origin=inward
http://cmuir.cmu.ac.th/jspui/handle/6653943832/58759
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