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Influence of the Conditions of Exposure of Pigs Carcasses (Sus scrofa domesticus L.) on the Egg-Laying Delay of Necrophagous Diptera in the Guinean Zone of Ivory Coast

Received: 25 November 2020     Accepted: 16 December 2020     Published: 22 December 2020
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Abstract

A decaying cadaver is particularly attractive to necrophagous insects, more specifically Diptera. These are the first to lay their eggs on corpses. For the post mortem interval determination, the entomologist needs to know the precise time of the first egg-laying. The objective of this study is to determine the egg laying delay of these insects on a cadaver exposed in different conditions in the Guinean zone of Côte d'Ivoire. To do this, our work was been carried out in a natural environment at the National Agronomic Research Center. The experimental setup consisted of four types of wire mesh cages corresponding to the following cases: cadavers exposed to the open air or control cadavers, semi-immersed cadavers, cadavers wrapped in a shroud and suspended cadavers. Work on the site has been made from 29 October to 5 November 2019. The spawning period in species of Calliphoridae, was shorter on control and suspended cadavers. In Sarcophagidae, we noted a larviposition late on the suspended cadavers. Muscidae and Fanniidae, which intervened later on the decomposing corpses, were not observed on the suspended cadavers. These carcasses quickly dried out, no longer being able to provide nutrients essential for the proper development of larvae of species of these Diptera families. Depending on the accessibility of the corpses to necrophagous insects, the first egg-laying of Diptera were observed after 6 hours of exposure and the last after 174 hours. The exposure conditions of the corpses significantly influenced the time taken to lay the main necrophagous Diptera. As the first egg-laying of the flies occurs in the first moments after death, as long as the corpses is accessible, the results obtained during these experiments should be taken into account by the expert entomologist, in the estimation of the interval post-mortem upon discovery of a corpse.

Published in American Journal of Entomology (Volume 4, Issue 4)
DOI 10.11648/j.aje.20200404.12
Page(s) 66-73
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2020. Published by Science Publishing Group

Keywords

Eggs-Laying Delay, Necrophagous Diptera, Corpses, Guinean Zone, Ivory Coast

References
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Cite This Article
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    Kpama-Yapo Yapibie Carine Eurudice, Dao Hassane, Koffi Alexandre Franklin, Aboua Louis Roi Nondenot. (2020). Influence of the Conditions of Exposure of Pigs Carcasses (Sus scrofa domesticus L.) on the Egg-Laying Delay of Necrophagous Diptera in the Guinean Zone of Ivory Coast. American Journal of Entomology, 4(4), 66-73. https://doi.org/10.11648/j.aje.20200404.12

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    ACS Style

    Kpama-Yapo Yapibie Carine Eurudice; Dao Hassane; Koffi Alexandre Franklin; Aboua Louis Roi Nondenot. Influence of the Conditions of Exposure of Pigs Carcasses (Sus scrofa domesticus L.) on the Egg-Laying Delay of Necrophagous Diptera in the Guinean Zone of Ivory Coast. Am. J. Entomol. 2020, 4(4), 66-73. doi: 10.11648/j.aje.20200404.12

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    AMA Style

    Kpama-Yapo Yapibie Carine Eurudice, Dao Hassane, Koffi Alexandre Franklin, Aboua Louis Roi Nondenot. Influence of the Conditions of Exposure of Pigs Carcasses (Sus scrofa domesticus L.) on the Egg-Laying Delay of Necrophagous Diptera in the Guinean Zone of Ivory Coast. Am J Entomol. 2020;4(4):66-73. doi: 10.11648/j.aje.20200404.12

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  • @article{10.11648/j.aje.20200404.12,
      author = {Kpama-Yapo Yapibie Carine Eurudice and Dao Hassane and Koffi Alexandre Franklin and Aboua Louis Roi Nondenot},
      title = {Influence of the Conditions of Exposure of Pigs Carcasses (Sus scrofa domesticus L.) on the Egg-Laying Delay of Necrophagous Diptera in the Guinean Zone of Ivory Coast},
      journal = {American Journal of Entomology},
      volume = {4},
      number = {4},
      pages = {66-73},
      doi = {10.11648/j.aje.20200404.12},
      url = {https://doi.org/10.11648/j.aje.20200404.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.aje.20200404.12},
      abstract = {A decaying cadaver is particularly attractive to necrophagous insects, more specifically Diptera. These are the first to lay their eggs on corpses. For the post mortem interval determination, the entomologist needs to know the precise time of the first egg-laying. The objective of this study is to determine the egg laying delay of these insects on a cadaver exposed in different conditions in the Guinean zone of Côte d'Ivoire. To do this, our work was been carried out in a natural environment at the National Agronomic Research Center. The experimental setup consisted of four types of wire mesh cages corresponding to the following cases: cadavers exposed to the open air or control cadavers, semi-immersed cadavers, cadavers wrapped in a shroud and suspended cadavers. Work on the site has been made from 29 October to 5 November 2019. The spawning period in species of Calliphoridae, was shorter on control and suspended cadavers. In Sarcophagidae, we noted a larviposition late on the suspended cadavers. Muscidae and Fanniidae, which intervened later on the decomposing corpses, were not observed on the suspended cadavers. These carcasses quickly dried out, no longer being able to provide nutrients essential for the proper development of larvae of species of these Diptera families. Depending on the accessibility of the corpses to necrophagous insects, the first egg-laying of Diptera were observed after 6 hours of exposure and the last after 174 hours. The exposure conditions of the corpses significantly influenced the time taken to lay the main necrophagous Diptera. As the first egg-laying of the flies occurs in the first moments after death, as long as the corpses is accessible, the results obtained during these experiments should be taken into account by the expert entomologist, in the estimation of the interval post-mortem upon discovery of a corpse.},
     year = {2020}
    }
    

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  • TY  - JOUR
    T1  - Influence of the Conditions of Exposure of Pigs Carcasses (Sus scrofa domesticus L.) on the Egg-Laying Delay of Necrophagous Diptera in the Guinean Zone of Ivory Coast
    AU  - Kpama-Yapo Yapibie Carine Eurudice
    AU  - Dao Hassane
    AU  - Koffi Alexandre Franklin
    AU  - Aboua Louis Roi Nondenot
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    JF  - American Journal of Entomology
    JO  - American Journal of Entomology
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    EP  - 73
    PB  - Science Publishing Group
    SN  - 2640-0537
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    AB  - A decaying cadaver is particularly attractive to necrophagous insects, more specifically Diptera. These are the first to lay their eggs on corpses. For the post mortem interval determination, the entomologist needs to know the precise time of the first egg-laying. The objective of this study is to determine the egg laying delay of these insects on a cadaver exposed in different conditions in the Guinean zone of Côte d'Ivoire. To do this, our work was been carried out in a natural environment at the National Agronomic Research Center. The experimental setup consisted of four types of wire mesh cages corresponding to the following cases: cadavers exposed to the open air or control cadavers, semi-immersed cadavers, cadavers wrapped in a shroud and suspended cadavers. Work on the site has been made from 29 October to 5 November 2019. The spawning period in species of Calliphoridae, was shorter on control and suspended cadavers. In Sarcophagidae, we noted a larviposition late on the suspended cadavers. Muscidae and Fanniidae, which intervened later on the decomposing corpses, were not observed on the suspended cadavers. These carcasses quickly dried out, no longer being able to provide nutrients essential for the proper development of larvae of species of these Diptera families. Depending on the accessibility of the corpses to necrophagous insects, the first egg-laying of Diptera were observed after 6 hours of exposure and the last after 174 hours. The exposure conditions of the corpses significantly influenced the time taken to lay the main necrophagous Diptera. As the first egg-laying of the flies occurs in the first moments after death, as long as the corpses is accessible, the results obtained during these experiments should be taken into account by the expert entomologist, in the estimation of the interval post-mortem upon discovery of a corpse.
    VL  - 4
    IS  - 4
    ER  - 

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Author Information
  • Department of Biosciences, Laboratory for Natural Environments and Biodiversity Conservation, Felix Houphouet Boigny University of Cocody, Abidjan, Ivory Coast

  • Department of Biosciences, Laboratory for Natural Environments and Biodiversity Conservation, Felix Houphouet Boigny University of Cocody, Abidjan, Ivory Coast

  • National Institute of Public Hygiene (INHP), Anti Vector Control Service, Abidjan, Ivory Coast

  • Department of Biosciences, Laboratory for Natural Environments and Biodiversity Conservation, Felix Houphouet Boigny University of Cocody, Abidjan, Ivory Coast

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