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Kwak ML, Wallman JF, Yeo D, Archer MS, Nakao R. Forensic parasitology: a new frontier in criminalistics. Forensic Sci Res 2024; 9:owae005. [PMID: 38846987 PMCID: PMC11156235 DOI: 10.1093/fsr/owae005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 12/04/2023] [Indexed: 06/09/2024] Open
Abstract
Parasites are ubiquitous, diverse, and have close interactions with humans and other animals. Despite this, they have not garnered significant interest from forensic scientists, and their utility as indicators in criminal investigations has been largely overlooked. To foster the development of forensic parasitology we explore the utility of parasites as forensic indicators in five broad areas: (i) wildlife trafficking and exploitation, (ii) biological attacks, (iii) sex crimes, (iv) criminal neglect of humans and other animals, and (v) indicators of movement and travel. To encourage the development and growth of forensic parasitology as a field, we lay out a four-step roadmap to increase the use and utility of parasites in criminal investigations.
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Affiliation(s)
- Mackenzie L Kwak
- Laboratory of Parasitology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
| | - James F Wallman
- Faculty of Science, University of Technology Sydney, Ultimo, New South Wales, Australia
- School of Earth, Atmospheric and Life Sciences, University of Wollongong, Wollongong, New South Wales, Australia
| | - Darren Yeo
- The Centre for Wildlife Forensics, National Parks Board (NParks), Singapore, Republic of Singapore
| | - Melanie S Archer
- Department of Forensic Medicine, Monash University/Victorian Institute of Forensic Medicine, Southbank, Victoria, Australia
| | - Ryo Nakao
- Laboratory of Parasitology, Department of Disease Control, Faculty of Veterinary Medicine, Hokkaido University, Sapporo, Japan
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de Barros GP, Hötzel MJ, da Silva MC, Avilés LLA, Bricarello PA. Does tail docking prevent Cochliomyia hominivorax myiasis in sheep? A six-year retrospective cohort study. Anim Welf 2024; 33:e26. [PMID: 38751799 PMCID: PMC11094548 DOI: 10.1017/awf.2024.21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 02/07/2024] [Accepted: 03/25/2024] [Indexed: 05/18/2024]
Abstract
Tail docking is a husbandry practice widely incorporated in sheep farms around the world. It is an irreversible mutilation that impairs animal welfare, both immediately and in the longer term. The defence of tail docking as a practice is centred around the perception that doing so contributes to the promotion of local hygiene, allowing the use of the wool, facilitating reproductive management and reducing the chances of myiasis, a disease caused by the invasion of blowfly larvae in the tissues of warm-blooded animals. However, current understanding of farm animal welfare questions the need to maintain practices such as tail docking. Thus, the aim of this study was to evaluate the effect of tail docking on the incidence of Cochliomyia hominivorax myiasis in sheep in an experimental flock in Brazil during a six-year retrospective cohort study. Relative risk, odds ratio and incidence rate ratio were the association measures adopted. A total of 4,318 data-points were collected and supplied the analytical model. Tail docking did not decrease the risk and, on the contrary, was found to increase the chances of sheep being affected by myiasis. The results support the hypothesis that tail docking is not a protective factor against the occurrence of myiasis and further fuel calls for a rethink of tail docking being deployed as a blanket measure in the prevention of myiasis in sheep.
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Affiliation(s)
- Giuliano Pereira de Barros
- Departamento de Zootecnia e Desenvolvimento Rural, Universidade Federal de Santa Catarina, Florianópolis88034-001, Brazil
| | - Maria José Hötzel
- Departamento de Zootecnia e Desenvolvimento Rural, Universidade Federal de Santa Catarina, Florianópolis88034-001, Brazil
| | - Marceli Carvalho da Silva
- Departamento de Zootecnia e Desenvolvimento Rural, Universidade Federal de Santa Catarina, Florianópolis88034-001, Brazil
| | - Laura Lívia Arias Avilés
- Departamento de Zootecnia e Desenvolvimento Rural, Universidade Federal de Santa Catarina, Florianópolis88034-001, Brazil
| | - Patrizia Ana Bricarello
- Departamento de Zootecnia e Desenvolvimento Rural, Universidade Federal de Santa Catarina, Florianópolis88034-001, Brazil
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Thümmel L, Degoutrie C, Fonseca-Muñoz A, Amendt J. Developmental differences in spatially distinct populations of the forensically relevant blow fly Lucilia sericata - About the comparability of developmental studies (and case work application). Forensic Sci Int 2024; 357:111972. [PMID: 38430653 DOI: 10.1016/j.forsciint.2024.111972] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/21/2024] [Accepted: 02/27/2024] [Indexed: 03/05/2024]
Abstract
The cosmopolitan blow fly Lucilia sericata is often used in forensic case work for estimating the minimum postmortem interval (PMImin). For this, the age of immature specimens developing on the dead body is calculated by measuring the time taken to reach the sampled developmental stage at a given temperature. To test whether regional developmental data of L. sericata is valid on a global scale, the time taken to reach different developmental stages was compared between a population from Mexico and one from Germany at two different constant temperatures. The German population of L. sericata was collected in Frankfurt/Main, while the Mexican population originated near Oaxaca de Juarez and was transported to Germany in the larval stage. Only the F1 generation was used to avoid adaption of the Mexican flies. Eggs were immediately placed at 20 °C and 30 °C. Five times 30 freshly eclosed larvae per replicate (n = 5) were then transferred to a cup of minced meat in separate containers. The larvae were checked every 8 h for migration, pupariation or emergence of adult flies. The time at which the first individual and 50 % of the specimens per container entered each of these stages, was recorded. Significant differences in the time of development between the two populations were observed at both temperatures. At 20 °C, the first specimens of the Mexican population reached all developmental stages a little (< 1 day to < 2 days) earlier than the German L. sericata. At 30 °C, the Mexican flies also reached the post-feeding stage slightly earlier (0.2 days). However, at 30 °C, the German flies started pupariation significantly earlier (after 5 days) than the Mexican flies (6.9 days) and the adults from Germany also emerged earlier (10.5 days compared to 13.1 days). The same pattern was observed when looking at 50 % of the total number of specimens per container. A comparison with previously published developmental studies was difficult as the experimental design varied widely between studies. However, the results were within the range of most studies. Our study has shown that age estimation can vary widely depending on the population on which the reference data used for the calculations are based. This highlights the importance of using local and population-specific developmental data for estimating the age of blow flies in case work.
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Affiliation(s)
- Luise Thümmel
- Institute of Legal Medicine, University Hospital Frankfurt, Goethe-University, Kennedyallee 104, Frankfurt am Main D-60596, Germany; Department of Aquatic Ecotoxicology, Faculty of Biological Sciences, Goethe-University, Max-von-Laue-Str. 13, Frankfurt am Main D-60438, Germany.
| | - Colin Degoutrie
- Institute of Legal Medicine, University Hospital Frankfurt, Goethe-University, Kennedyallee 104, Frankfurt am Main D-60596, Germany
| | - Alicia Fonseca-Muñoz
- Facultad de Sistemas Biológicos e Innovación Tecnologica, Universidad Autónoma Benito Juárez de Oaxaca, Av. Universidad S/N. Ex-Hacienda 5 Señores, Oaxaca, Méx. C.P. 68120, Mexico
| | - Jens Amendt
- Institute of Legal Medicine, University Hospital Frankfurt, Goethe-University, Kennedyallee 104, Frankfurt am Main D-60596, Germany
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Sadek ASM, Farghaly DS, Kadada H, Mashaal A. Immunomodulatory potential of Sarcophaga argyostoma larval hemolymph as a natural alternative to berenil in treating Trypanosoma evansi in vivo. Sci Rep 2024; 14:6972. [PMID: 38521853 PMCID: PMC10960805 DOI: 10.1038/s41598-024-57113-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2024] [Accepted: 03/14/2024] [Indexed: 03/25/2024] Open
Abstract
This study compared effects of diminazene aceturate (berenil), commonly used to treat domestic animals infected with Trypanosoma evansi, with the hemolymph of Sarcophaga argyostoma larva. The hemolymph may be acting as a possible natural alternative to berenil, based on immunomodulation mediated inflammatory response. Inflammatory mediators and histopathological changes in liver, kidney, and spleen of albino mice experimentally infected with T. evansi were studied. Mice were divided into five groups: G1, uninfected, untreated (negative control); G2, T. evansi infected (positive control); G3, infected and treated with berenil; G4, infected and treated with hemolymph; G5, infected and treated with hemolymph 3 days before infection (prophylactic group). Animals in (G4) and (G5) exhibited a significant overall reduction in serum levels of IFN-γ. However, the reduction in TNF-α and IL-6 levels was more limited compared to (G2) and (G3). Notably, an elevation in IL-10 levels was observed compared to animals in other groups. Furthermore, the groups treated with hemolymph demonstrated an alleviation of T. evansi infection in contrast to the other groups. This study highlights that the administration of Sarcophaga argyostoma larval hemolymph at a dosage of 0.5 ml/kg significantly inhibited T. evansi organisms in vivo, showcasing a pronounced trypanocidal effect.
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Affiliation(s)
- Al-Shaimaa M Sadek
- Parasitology, Zoology and Entomology Department, Faculty of Science (for Girls), Al-Azhar University, Cairo, Egypt.
| | - Doaa S Farghaly
- Medical Entomology, Zoology and Entomology Department, Faculty of Science (for Girls), Al-Azhar University, Cairo, Egypt
| | - Hala Kadada
- Taxonomy, Zoology and Entomology Department, Faculty of Science (for Girls), Al-Azhar University, Cairo, Egypt
| | - Alya Mashaal
- Immunology, Zoology and Entomology Department, Faculty of Science (for Girls), Al-Azhar University, Cairo, Egypt
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Jallow BJJ, Gassara G, Bajinka O, Luo Y, Liu M, Cai J, Huang J, Meng F. Human myiasis in Sub-Saharan Africa: A systematic review. PLoS Negl Trop Dis 2024; 18:e0012027. [PMID: 38547087 PMCID: PMC10977789 DOI: 10.1371/journal.pntd.0012027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 02/27/2024] [Indexed: 04/02/2024] Open
Abstract
BACKGROUND Human myiasis is a parasitic dipteran fly infestation that infects humans and vertebrates worldwide. However, the disease is endemic in Sub-Saharan Africa and Latin America. In Sub-Saharan Africa, it is under-reported and therefore its prevalence is unknown. This systematic review aims to elucidate the prevalence of human myiasis, factors that influence the infection, and myiasis-causing fly species in SSA. The review also dwelled on the common myiasis types and treatment methods of human myiasis. METHODS Here, we collect cases of human myiasis in Sub-Saharan Africa based on literature retrieved from PubMed, Google Scholar and Science Direct from 1959 to 2022. A total of 75 articles and 157 cases were included in the study. The recommendations of PRISMA 2020 were used for the realization of this systematic review. RESULTS In total, 157 cases of human myiasis in SSA were reviewed. Eleven fly species (Cordylobia anthropophaga, Cordylobia rodhaini, Dermatobia hominis, Lucilia cuprina, Lucilia sericata, Oestrus ovis, Sarcophaga spp., Sarcophaga nodosa, Chrysomya megacephala, Chrysomya chloropyga and Clogmia albipuntum) were found to cause human myiasis in SSA. Cordylobia anthropophaga was the most prevalent myiasis-causing species of the reported cases (n = 104, 66.2%). More than half of the reported cases were from travelers returning from SSA (n = 122, 77.7%). Cutaneous myiasis was the most common clinical presentation of the disease (n = 86, 54.7%). Females were more infected (n = 78, 49.6%) than males, and there was a higher infestation in adults than young children. CONCLUSION The findings of this study reveals that international travelers to Sub-Saharan Africa were mostly infested therefore, we recommend that both international travelers and natives of SSA be enlightened by public health officers about the disease and its risk factors at entry points in SSA and the community level respectively. Clinicians in Sub-Saharan Africa often misdiagnose the disease and most of them lack the expertise to properly identify larvae, so we recommend the extensive use of molecular identification methods instead.
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Affiliation(s)
- Binta J. J. Jallow
- Central South University, Department of Medical Parasitology, Changsha City, China
| | - Goudja Gassara
- Central South University, Department of Nutrition Science and Food Hygiene, Xiangya School of Public Health, Changsha City, China
| | - Ousman Bajinka
- Central South University, Department of Medical Parasitology, Changsha City, China
- University of The Gambia, School of Medicine and Allied Health Science, Banjul City, Gambia
| | - Yifei Luo
- Central South University, Department of Medical Parasitology, Changsha City, China
| | - Mandie Liu
- Central South University, Department of Medical Parasitology, Changsha City, China
| | - Jifeng Cai
- Central South University, Department of Medical Parasitology, Changsha City, China
- Xinjiang Medical University, Department of Forensic Medicine, School of Basic Medical Sciences, Urumqi City, China
| | - Jingjing Huang
- Xinjiang Medical University, Department of Forensic Medicine, School of Basic Medical Sciences, Urumqi City, China
| | - Fanming Meng
- Central South University, Department of Medical Parasitology, Changsha City, China
- Xinjiang Medical University, Department of Forensic Medicine, School of Basic Medical Sciences, Urumqi City, China
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Azarmi S, Akbarzadeh K, Ekrami A, Sheikh Z, Dehghan O. Scalp myiasis associated with soft tissue sarcoma lesion: a case report and review of relevant literature. BMC Infect Dis 2024; 24:51. [PMID: 38183025 PMCID: PMC10770951 DOI: 10.1186/s12879-023-08957-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Accepted: 12/27/2023] [Indexed: 01/07/2024] Open
Abstract
BACKGROUND Sarcophagidae is one of the main fly families that is attracted to open wounds, ulcers, lesions, and other injuries for depositing their larvae. The presence of larvae of flies in human tissues makes myiasis. Myiasis on the scalp could be more frightening in comparison with myiasis on the other parts of the body. It is a rare myiasis case that shows the ability of myiasis agents to attack various parts of the body. On the other hand, reporting of myiasis cases by Sarcophagidae larvae is not common due to difficulties in their identification. This study aimed to emphasize the importance of Sarcohagidae larvae in producing myiasis by describing the first case of soft tissue sarcoma infestation and provides a review of human myiasis by larvae of the Sarcophagidae family during 2010-2023 and also a review of wound myiasis cases associated with malignancy during 2000-2023. CASE PRESENTATION A case of sarcoma cancer myiasis is reported on the scalp of a 43-year-old man who referred to one of Tehran's hospitals for surgical treatment of cancer. Before surgery, insect larvae were observed in the area of sarcoma. The larvae were isolated, examined morphologically, and identified as Sarcophaga spp. CONCLUSIONS Myiasis has been considered as a neglected disease. Publishing of myiasis cases could be useful to alert health policy-makers about its danger and appearance in the community. It is not usual but can be expected even on the scalp of the human head. Exact daily supervision and dressing of the wound could be recommended to prevent cutaneous myiasis.
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Affiliation(s)
- Sahar Azarmi
- Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Kamran Akbarzadeh
- Department of Medical Entomology and Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Ali Ekrami
- Department of Nursing, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Zahra Sheikh
- Department of Medical Parasitology and Mycology, School of Medicine, Iranshahr University of Medical Sciences, Iranshahr, Iran
| | - Omid Dehghan
- Department of Medical Parasitology and Mycology, School of Medicine, Iranshahr University of Medical Sciences, Iranshahr, Iran.
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Khadka SK, Banmala S, Dhakal SB, Pandey A, Jha S. Myiasis of open great toe fracture wound: a rare case report. Ann Med Surg (Lond) 2023; 85:5246-5249. [PMID: 37811016 PMCID: PMC10553109 DOI: 10.1097/ms9.0000000000001248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2023] [Accepted: 08/19/2023] [Indexed: 10/10/2023] Open
Abstract
Introduction and importance Myiasis of an open fracture wound is very rare but can occur due to neglect of wound care. Case presentation A 12-year-old boy from a low socio-economic background, following an impact injury in his right great toe 10 days back presented with complaints of pain, swelling, and a foul-smelling odor from his right great toe. On examination, a swollen, tender puncture wound was noted over the dorsal aspect of the great toe revealing part of live larvae and serosanguinous discharge. Management was done with the complete removal of maggots, wound debridement, wound lavage, administration of systemic antibiotics, and toe guard slab application. Clinical discussion Wound myiasis results from a facultative or obligatory parasite that is initiated when flies oviposit in hemorrhagic, necrotic, or pus-filled lesions. The possible complications of myiasis include local destruction, invasion into deep tissues, and secondary infection, which could result in amputation of the affected area, especially where obligatory parasites are concerned. Conclusion Myiasis commonly occurs due to poor hygiene and neglect of wound care along with many other risk factors. Early proper wound care prevents the development of wound myiasis and early diagnosis and treatment of myiasis prevent complication of local tissue destruction and amputation of affected parts.
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Affiliation(s)
| | - Sabin Banmala
- Department of Emergency Medicine, Sindhuli Hospital, Kamalamai
| | - Sujan B. Dhakal
- Department of Emergency Medicine, Sindhuli Hospital, Kamalamai
| | - Ashmita Pandey
- Department of Emergency Medicine, Sindhuli Hospital, Kamalamai
| | - Sudhanshu Jha
- Department of Orthopedics and Trauma Surgery, Bajrabarahi Chapagaon Hospital, Chapagaon, Nepal
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Barros GPD, Leme DP, Avilés LLA, Bricarello PA. Homeopathic Sulphur Ointment as Adjuvant in the Treatment of Sheep with Myiasis by Cochliomyia hominivorax (Diptera: Calliphoridae): A Case Series. HOMEOPATHY 2023. [PMID: 37758190 DOI: 10.1055/s-0043-1770360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/03/2023]
Abstract
BACKGROUND Myiasis by Cochliomyia hominivorax (Diptera: Calliphoridae) is a serious problem in animal health. Homeopathic Sulphur presents similarity with the clinical presentation verified in these cases and has already shown in vitro efficacy on the blowfly that causes this pathology. This article presents the report of a series of clinical cases of myiasis by C. hominivorax in sheep that underwent adjuvant treatment with homeopathic Sulphur and presents a theoretical-scientific discussion of biological events related to the clinical treatment of the condition. PATIENTS Seven naturally occurring myiases affecting sheep from an experimental farm were treated by an ointment impregnated with the homeopathic medicine Sulph 12cH, used as adjuvant after the manual removal of accessible larvae from the wound during wound cleaning. The animals were treated daily and evaluated clinically until complete healing of the lesions. Clinical information on the evolution of the inflammatory and scarring process was collected. Blood counts and bacteriological examinations were performed before and after topical homeopathic treatment. RESULTS The homeopathic ointment Sulph 12cH was able to inhibit the development of parasitic C. hominivorax larvae and promote tissue repair and healing in naturally occurring myiasis in the sheep of this study. CONCLUSION The homeopathic medicine Sulphur, formulated as an ointment, may be a useful new and adjuvant therapeutic option for treating myiasis in animals.
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Affiliation(s)
- Giuliano Pereira de Barros
- Departamento de Zootecnia e Desenvolvimento Rural, Programa de Pós Graduação em Agroecossistemas, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina. Florianópolis, SC, Brasil
| | - Denise Pereira Leme
- Departamento de Zootecnia e Desenvolvimento Rural, Programa de Pós Graduação em Agroecossistemas, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina. Florianópolis, SC, Brasil
| | - Laura Livia Arias Avilés
- Departamento de Zootecnia e Desenvolvimento Rural, Programa de Pós Graduação em Agroecossistemas, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina. Florianópolis, SC, Brasil
| | - Patrizia Ana Bricarello
- Departamento de Zootecnia e Desenvolvimento Rural, Programa de Pós Graduação em Agroecossistemas, Centro de Ciências Agrárias, Universidade Federal de Santa Catarina. Florianópolis, SC, Brasil
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Lutz L, Klinger MF, Holz F, Verhoff MA, Amendt J. How to prove neglect in the context of the post-mortem examination. Forensic Sci Med Pathol 2023:10.1007/s12024-023-00695-2. [PMID: 37578627 DOI: 10.1007/s12024-023-00695-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/03/2023] [Indexed: 08/15/2023]
Abstract
Understanding the causes, extent, and period of neglect is not only a medical but also a forensic task when it comes to legal investigations. In this study, we evaluated 46 autopsied cases where there was clear evidence of physical neglect during the last period of the deceased's life. The age of the deceased ranged from 21 to 96 years; most of them were female (71.7%). The majority of cases (89.9%) took place in a domestic environment, with partners or relatives providing care. The most frequent post-mortem findings were pressure sores, followed by inflammatory skin changes, and signs of malnutrition and dehydration. Neglect was the cause or co-cause of death in 23% of the cases. More than half of the deceased showed severe contamination of the skin surface by excrement, and in almost 40% of the cases, fly infestation was found. The majority of insects belonged to the group of house flies (Diptera: Muscidae), mainly the common house fly, Musca domestica. By analyzing the entomological evidence, it was possible to prove an insect infestation period of at least several days ante-mortem. Since the period of neglect may be relevant in terms of legal proceedings, the present work demonstrates the particular importance of insect traces in providing this evidence. While prosecution and conviction of caregivers remain challenging, it is all the more essential that entomology and legal medicine collaborate on the analysis of findings of neglect.
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Affiliation(s)
- L Lutz
- Institute of Legal Medicine, University Hospital Frankfurt, Goethe-University, Kennedyallee 104, D-60596, Frankfurt Am Main, Germany.
| | - M F Klinger
- Institute of Legal Medicine, University Hospital Frankfurt, Goethe-University, Kennedyallee 104, D-60596, Frankfurt Am Main, Germany
| | - F Holz
- Institute of Legal Medicine, University Hospital Frankfurt, Goethe-University, Kennedyallee 104, D-60596, Frankfurt Am Main, Germany
| | - M A Verhoff
- Institute of Legal Medicine, University Hospital Frankfurt, Goethe-University, Kennedyallee 104, D-60596, Frankfurt Am Main, Germany
| | - J Amendt
- Institute of Legal Medicine, University Hospital Frankfurt, Goethe-University, Kennedyallee 104, D-60596, Frankfurt Am Main, Germany
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Akhoundi M, Mathieu A, Hannachi W, Nasrallah J, Quezel G, Blaizot R, Blanchet D, Ben Romdhane H, Epelboin L, Izri A. Morphological and Molecular Characterizations of Cochliomyia hominivorax (Diptera: Calliphoridae) Larvae Responsible for Wound Myiasis in French Guiana. Diagnostics (Basel) 2023; 13:2575. [PMID: 37568937 PMCID: PMC10416906 DOI: 10.3390/diagnostics13152575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 07/25/2023] [Accepted: 07/27/2023] [Indexed: 08/13/2023] Open
Abstract
Myiasis is an ectoparasitic infection caused by the larvae of true flies (Diptera). We came across a rather rare case of myiasis in an immunocompetent 34-year-old man from French Guiana with advanced wound myiasis masquerading as cavitary myiasis and a history of cholesteatoma surgery in the left ear. The Diptera larvae responsible for the disease were isolated and identified using morphological and molecular approaches as Cochliomyia hominivorax. We underline the importance of this parasitosis as the second case of myiasis caused by C. hominivorax and the first case of wound myiasis in this overseas department of France and its incidence in pre-urban areas of the capital, Cayenne, in South America.
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Affiliation(s)
- Mohammad Akhoundi
- Parasitology-Mycology Department, Avicenne Hospital, AP-HP, Sorbonne Paris Nord University, 93000 Bobigny, France
| | - Alexandre Mathieu
- Groupe d’Étude et de Protection des Oiseaux en Guyane, Rémire-Montjoly 97354, French Guiana
| | - Wajih Hannachi
- ENT Department, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne 97306, French Guiana
| | - Jade Nasrallah
- Parasitology-Mycology Department, Avicenne Hospital, AP-HP, Sorbonne Paris Nord University, 93000 Bobigny, France
| | - Guillaume Quezel
- Infectious and Tropical Diseases Unit, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne 97306, French Guiana
| | - Romain Blaizot
- Department of Dermatology, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne 97306, French Guiana
| | - Denis Blanchet
- Parasitology Mycology Universitary Laboratory, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne 97306, French Guiana
| | | | - Loïc Epelboin
- Infectious and Tropical Diseases Unit, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne 97306, French Guiana
- Centre d’Investigation Clinique Antilles Guyane CIC Inserm 1424, Centre Hospitalier de Cayenne Andrée Rosemon, Cayenne 97306, French Guiana
| | - Arezki Izri
- Parasitology-Mycology Department, Avicenne Hospital, AP-HP, Sorbonne Paris Nord University, 93000 Bobigny, France
- Unité des Virus Émergents (UVE: Aix-Marseille Université-IRD 190-Inserm 1207-IHU Méditerranée Infection), 13005 Marseille, France
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Battán Horenstein M, Moretta E, Granton F, Dib DM. Case report on Cochliomyia hominivorax (Coquerel, 1858) and Co. macellaria (Fabricius, 1775) (Calliphoridae, Diptera) myiasis prior to death: Implications on postmortem interval estimation. J Forensic Leg Med 2023; 97:102544. [PMID: 37269708 DOI: 10.1016/j.jflm.2023.102544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 05/18/2023] [Accepted: 05/29/2023] [Indexed: 06/05/2023]
Abstract
The most important contribution of forensic entomology is the estimation of the postmortem interval (PMI) or time since death. The forensic entomologist assumes that the biological clock of necrophagous insects that develop by feeding on cadaver tissues begins when the victim's biological clock is turned off. However, tissues can be invaded while the host is still alive (called myiasis), so the period of activity of necrophagous insects would not be indicative of PMI. The aim of this work was, through the presentation of a case report, to highlight the importance of expertise in the identification of necrophagous species associated with a corpse and their type of relationship in order to avoid an erroneous estimation of PMI. The corpse of a woman, missing for 14 days, was found outdoors in a small river 15 cm deep. Her corpse had numerous lesions infested with dipteran larvae that were collected during autopsy. Entomological evidence included second and third instar larvae of Cochliomyia hominivorax and Co. macellaria. The obligate parasitic nature of Co. hominivorax as a primary producer of myiasis and secondary of Co. macellaria allowed us to establish the time when the victim was still alive and from there to estimate the PMI.
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Affiliation(s)
- Moira Battán Horenstein
- Centro de Relevamiento y Evaluación de Recursos Agrícolas y Naturales, Instituto Multidisciplinario de Biología Vegetal (CREAN-IMBIV, UNC-CONICET), Argentina.
| | | | | | - David M Dib
- Instituto de Medicina Forense de Córdoba, Argentina
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12
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Bugelli V, Tarozzi I, Galante N, Bortolini S, Franceschetti L. Review on forensic importance of myiasis: Focus on medicolegal issues on post-mortem interval estimation and neglect evaluation. Leg Med (Tokyo) 2023; 63:102263. [PMID: 37126932 DOI: 10.1016/j.legalmed.2023.102263] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 03/21/2023] [Accepted: 04/21/2023] [Indexed: 05/03/2023]
Abstract
Myiasis is the infestation of live vertebrates by dipterous larvae that feed on living or necrotic tissues, liquid body substances or ingested food and develop in or on the vertebrate body. In both animals and humans, myiasis plays a fundamental role in forensic practice because of its implications in the evaluation of cases of neglect and in the mPMI (minimum post-mortem interval) estimation. The present study aims to provide a review of forensic issues related to myiasis. A retrospective analysis was conducted by exploring major electronic literature databases. Methodological evaluation of each study was performed according to the PRISMA (Preferred Reporting Items for Systematic Review and Meta-Analyses) standards. Sixty-one papers were included in this review. Entomology shows great potentiality in forensic investigations, mostly because of its contributory role in mPMI estimation. Such evaluation, however, requires a careful consideration of the possibility of an ante-mortem myiasis infestation, which could complicate the correct assessment of the mPMI. Hence, forensic pathologists should pay attention to the entomological fauna on a corpse, in both fresh and decomposed bodies. Moreover, in cases with poor nutritional or hygienic conditions, myiasis should be carefully evaluated as an indicator of neglect.
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Affiliation(s)
- Valentina Bugelli
- SOUTH-EAST TUSCANY Local Health Unit, Department of Legal Medicine, Grosseto, Italy
| | - Ilaria Tarozzi
- MODENA Local Health Unit, Department of Legal Medicine and Risk Management, Modena, Italy
| | - Nicola Galante
- Institute of Legal Medicine Milan, Department of Biomedical Sciences for Heath, University of Milan, Milan, Italy.
| | | | - Lorenzo Franceschetti
- Institute of Legal Medicine Milan, Department of Biomedical Sciences for Heath, University of Milan, Milan, Italy; LABANOF, Laboratorio di Antropologia e Odontologia Forense, Department of Biomedical Sciences for Heath, University of Milan, Milan, Italy
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13
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Bambaradeniya YTB, Magni PA, Dadour IR. Traumatic sheep myiasis: A review of the current understanding. Vet Parasitol 2023; 314:109853. [PMID: 36577285 DOI: 10.1016/j.vetpar.2022.109853] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022]
Abstract
Myiasis, or the infestation of live humans and vertebrate animals by dipterous larvae, is a health issue worldwide. The economic impact and potential threat to animal health and wellbeing of this disease under the animal husbandry sector is considerable. Sheep are a highly vulnerable livestock category exposed to myiasis (sheep strike), due to several unique predisposing factors that attract flies. The successful mitigation of this disease relies on a thorough understanding of fly population dynamics associated with the change in weather patterns and the evaluation of this disease through different branches of science such as chemistry, molecular biology, and microbiology. The present review provides a summary of the existing knowledge of strike in sheep, discussed in relation to the application of volatile organic compounds, metagenomics, and molecular biology, and their use regarding implementing fly control strategies such as traps, and to increase the resilience of sheep to this disease through improving their health and wellbeing.
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Affiliation(s)
- Y T B Bambaradeniya
- Discipline of Medical, Molecular & Forensic Sciences, Murdoch University, Murdoch, Western Australia, Australia.
| | - P A Magni
- Discipline of Medical, Molecular & Forensic Sciences, Murdoch University, Murdoch, Western Australia, Australia; Murdoch University Singapore, King's Centre, Singapore.
| | - I R Dadour
- Discipline of Medical, Molecular & Forensic Sciences, Murdoch University, Murdoch, Western Australia, Australia; Source Certain, PO Box 1570, Wangara DC, Western Australia 6947, Australia.
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14
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Shang J, Xu W, Huang X, Zhang D, Yan L, Pape T. Comparative Mitogenomics of Flesh Flies: Implications for Phylogeny. INSECTS 2022; 13:insects13080718. [PMID: 36005343 PMCID: PMC9408989 DOI: 10.3390/insects13080718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/04/2022] [Accepted: 08/05/2022] [Indexed: 05/13/2023]
Abstract
Flesh flies (Diptera: Sarcophagidae) represent a rapid radiation belonging to the Calyptratae. With more than 3000 known species, they are extraordinarily diverse in terms of their breeding habits and are therefore of particular importance in human and veterinary medicine, forensics, and ecology. To better comprehend the phylogenetic relationships and evolutionary characteristics of the Sarcophagidae, we sequenced the complete mitochondrial genomes of five species of flesh flies and performed mitogenomic comparisons amongst the three subfamilies. The mitochondrial genomes match the hypothetical condition of the insect ancestor in terms of gene content and gene arrangement. The evolutionary rates of the subfamilies of Sarcophagidae differ significantly, with Miltogramminae exhibiting a higher rate than the other two subfamilies. The monophyly of the Sarcophagidae and each subfamily is strongly supported by phylogenetic analysis, with the subfamily-level relationship inferred as (Sarcophaginae, (Miltogramminae, Paramacronychiinae)). This study suggests that phylogenetic analysis based on mitochondrial genomes may not be appropriate for rapidly evolving groups such as Miltogramminae and that the third-codon positions could play a considerable role in reconstructing the phylogeny of Sarcophagidae. The protein-coding genes ND2 and ND6 have the potential to be employed as DNA markers for species identification and delimitation in flesh flies.
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Affiliation(s)
- Jin Shang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Wentian Xu
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Xiaofang Huang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
| | - Dong Zhang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
- Correspondence: (D.Z.); (L.Y.)
| | - Liping Yan
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China
- Correspondence: (D.Z.); (L.Y.)
| | - Thomas Pape
- Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen, Denmark
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15
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Xu W, Liu G, Wang Q, Yan L, Liu X, Li X, Pape T, Zhang D. Ultrastructure of Antennal Sensory Organs in Nine Flesh Flies (Diptera: Sarcophagidae): New Insight into the Definition of Family Sarcophagidae. INSECTS 2022; 13:insects13070602. [PMID: 35886778 PMCID: PMC9316071 DOI: 10.3390/insects13070602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 06/20/2022] [Accepted: 06/28/2022] [Indexed: 12/10/2022]
Abstract
Simple Summary The antennal sensilla of species in all three subfamilies of Sarcophagidae are studied for the first time via scanning electron microscopy. The morphology, density, and distribution of each type are described for each species. A total of eight types of antennal sensilla (chaetic sensilla, setiferous plaques, pedicellar buttons, trichoid sensilla, basiconic sensilla, coeloconic sensilla, clavate sensilla, bottle-shaped sensilla) and sensory pits are found in both sexes. The existence of bottle-shaped sensilla in the sensory pits in all three subfamilies of the sarcophagid species suggests a potential synapomorphy of sarcophagids and a new morphological diagnosis character of the family Sarcophagidae. Abstract The antennae are the main olfactory organ of flies, playing key roles in their survival and the success of all life stages. Antennal ultrastructural morphology has been well described in the representative species of most calyptrate families, yet only a few studies have focused on Sarcophagidae species, those with ecological and medical relevance. Antennal morphology and the types, shapes, distribution, and density of the antennal sensilla of nine Sarcophagidae species are studied in detail with scanning electron microscopy, including Miltogramminae: Metopia campestris (Fallén) and Mesomelena mesomelaena (Loew), Paramacronychiinae: Agria mihalyii (Rohdendorf & Verves), Wohlfahrtia bella (Macquart), and W. magnifica (Schiner); Sarcophaginae: Sarcophaga (Parasarcophaga) albiceps Meigen, S. (Bercaea) africa (Wiedemann), S. (Boettcherisca) peregrina (Robineau-Desvoidy), and S. (Liosarcophaga) portschinskyi (Rohdendorf), covering all three subfamilies of this family. The morphology of the three segments of the antennae has been described. The scape has only one type of chaetic sensilla, while three subtypes of chaetic sensilla were detected on the pedicel. The postpedicel has four types of sensilla: trichoid sensilla, coeloconic sensilla, clavate sensilla, and three subtypes of basiconic sensilla. Bottle-shaped sensilla were observed in sensory pits on the postpedicel in all nine species. These sensilla have not been discovered in other calyptrate species, suggesting that they are a potential sarcophagid synapomorphy.
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Affiliation(s)
- Wentian Xu
- School of Ecology and Nature Conservation, Beijing Forestry University, Qinghua East Road 35, Beijing 100083, China; (W.X.); (G.L.); (L.Y.); (X.L.)
| | - Genting Liu
- School of Ecology and Nature Conservation, Beijing Forestry University, Qinghua East Road 35, Beijing 100083, China; (W.X.); (G.L.); (L.Y.); (X.L.)
- School of BioSciences, University of Melbourne, Melbourne, VIC 3010, Australia;
| | - Qike Wang
- School of BioSciences, University of Melbourne, Melbourne, VIC 3010, Australia;
| | - Liping Yan
- School of Ecology and Nature Conservation, Beijing Forestry University, Qinghua East Road 35, Beijing 100083, China; (W.X.); (G.L.); (L.Y.); (X.L.)
| | - Xianhui Liu
- Department of Entomology and Nematology, University of California Davis, Davis, CA 95616, USA;
| | - Xinyu Li
- School of Ecology and Nature Conservation, Beijing Forestry University, Qinghua East Road 35, Beijing 100083, China; (W.X.); (G.L.); (L.Y.); (X.L.)
| | - Thomas Pape
- Natural History Museum of Denmark, Science Faculty, University of Copenhagen, 2100 Copenhagen, Denmark;
| | - Dong Zhang
- School of Ecology and Nature Conservation, Beijing Forestry University, Qinghua East Road 35, Beijing 100083, China; (W.X.); (G.L.); (L.Y.); (X.L.)
- Correspondence:
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16
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Friant S, Young DK, Goldberg TL. Typical intracranial myiasis in Nigerian red river hogs ( Potamochoerus porcus) caused by an unknown bot fly (Diptera: Oestridae). Int J Parasitol Parasites Wildl 2022; 17:14-19. [PMID: 34934619 PMCID: PMC8660700 DOI: 10.1016/j.ijppaw.2021.11.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/23/2021] [Accepted: 11/23/2021] [Indexed: 06/14/2023]
Abstract
We report an unknown taxon of bot fly (Diptera: Oestridae: Oestrinae) in red river hogs (Potamochoerus porcus Linnaeus, 1758) in Cross River State, Nigeria. From direct observation and interviews with local hunters, we document that, remarkably, the parasite typically occurs within the intracranial supra-meningeal space - i.e., between the inner wall of the skull and the brain - but without causing visible inflammation or clinical signs. The parasite is most similar (up to 87.9%) to Rhinoestrus usbekistanicus based on cytochrome oxidase subunit 1 DNA sequencing but is sufficiently divergent phylogenetically to represent a new or previously un-sequenced taxon. Morphologically, the parasite shares some, but not all, features with R. nivarleti. Local cultural belief systems attribute aspects of red river hog behavior (e.g. intelligence, elusiveness) to the parasite, suggesting a prolonged presence in the red river hog population. The parasite's unusual anatomic location may be aberrant, or it may be a protective adaptation to life in red river hogs, which forage vigorously with their snouts.
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Affiliation(s)
- Sagan Friant
- Department of Anthropology, The Pennsylvania State University, University Park, PA, 16802, USA
- The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA, 16802, USA
| | - Daniel K. Young
- Department of Entomology, University of Wisconsin-Madison, Madison, WI, 53706, USA
| | - Tony L. Goldberg
- Department of Pathobiological Sciences, University of Wisconsin-Madison, Madison, WI, 53706, USA
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17
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Arp AP, Quintero G, Sagel A, Batista RG, Phillips PL, Hickner PV. The microbiome of wild and mass-reared new world screwworm, Cochliomyia hominivorax. Sci Rep 2022; 12:1042. [PMID: 35058490 PMCID: PMC8776964 DOI: 10.1038/s41598-022-04828-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Accepted: 12/16/2021] [Indexed: 11/10/2022] Open
Abstract
Insect population control through continual releases of large numbers of sterile insects, called sterile insect technique (SIT), is only possible if one can mass-rear large quantities of healthy insects. Adaptation of insect stocks to rearing conditions and artificial feeding systems can have a multitude of negative effects such as inbreeding depression, reduced compatibility with wild strains, unintentional selection for traits that lower fitness after release, and an altered microbiome. Changes to insect microbiomes can have many effects on insects ranging from a reduction in sex pheromones or reduced fitness. Thus understanding these systems is important for mass rearing and the performance of the sterile insect control programs. In this study we explored the microbiome of the New World screwworm, Cochliomyia hominivorax (Coquerel) (Diptera: Calliphoridae) an economically important parasite of warm-blooded animals. Samples from myiases in cows and wild adults were compared to and mass-reared flies used by the SIT program. Significant differences were observed between these treatments, with wild captured flies having a significantly more diverse microbial composition. Bacteria known to stimulate oviposition were found in both wild and mass-reared flies. Two bacteria of veterinary importance were abundant in wild flies, suggesting screwworm is a potential vector of these diseases. Overall, this study provides the screwworm eradication program a platform to continue exploring the effects associated bacteria have on screwworm fitness.
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18
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Paulo DF, Williamson ME, Scott MJ. CRISPR/Cas9 Genome Editing in the New World Screwworm and Australian Sheep Blowfly. Methods Mol Biol 2022; 2495:173-201. [PMID: 35696034 DOI: 10.1007/978-1-0716-2301-5_10] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Blowflies are of interest for medical applications (maggot therapy), forensic investigations, and for evolutionary developmental studies such as the evolution of parasitism. It is because of the latter that some blowflies such as the New World screwworm and the Australian sheep blowfly are considered major economic pests of livestock. Due to their importance, annotated assembled genomes for several species are now available. Here, we present a detailed guide for using the Streptococcus pyogenes Cas9 RNA-guided nuclease to efficiently generate both knockout and knock-in mutations in screwworm and sheep blowfly. These methods should accelerate genetic investigations in these and other closely related species and lead to a better understanding of the roles of selected genes in blowfly development and behavior.
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Affiliation(s)
- Daniel F Paulo
- Department of Plant and Environmental Protection Sciences (PEPS), The University of Hawai'i at Mānoa, Honolulu, HI, USA
| | - Megan E Williamson
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC, USA
| | - Maxwell J Scott
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh, NC, USA.
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19
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Jaimes-Dueñez J, Leal-Rueda DA, Jaimes-Dueñez JD, Cáceres-Rivera DI, Castillo-Castañeda A, Ramírez JD. Human urogenital myiasis caused by the 'rat-tailed' larvae of Palpada scutellaris (Fabricius, 1805) in Santander, eastern Colombia: A case report. Parasitol Int 2021; 87:102496. [PMID: 34758388 DOI: 10.1016/j.parint.2021.102496] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 10/19/2021] [Accepted: 10/31/2021] [Indexed: 11/28/2022]
Abstract
The Palpada genus, which belongs to the Diptera order (family, Syrphidae), has been rarely reported to cause accidental myiasis in humans. Herein, we report the first case of genitourinary myiasis caused by a larva of the Palpada genus in a 9-year-old girl from Colombia. The girl, who resided in a rural area in the municipality of Floridablanca, Santander, near Bucaramanga city, in eastern Colombia, presented with lower abdominal pain accompanied by oliguria, followed by the subsequent elimination of a larva through the urine. The next day, the patient visited a primary healthcare centre, and no signs or symptoms were observed on clinical examination. Haematological analysis showed high plateletcrit levels and platelet large cell counts. The results of the urine test revealed a decrease in specific gravity and a slight increase in bacterial content and mucus. DNA barcoding analyses showed that the etiological agent corresponded to a third instar larva of the Palpada scutellaris species. This is the first case to report genitourinary myiasis caused by larvae of the genus Palpada in humans. However, we believe that additional cases might be accurately detected if adequate tests are performed to confirm the clinical and molecular features associated with this infection.
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Affiliation(s)
- Jeiczon Jaimes-Dueñez
- Grupo de Investigación en Ciencias Animales GRICA, Facultad de Medicina Veterinaria y Zootecnia, Universidad Cooperativa de Colombia UCC, Bucaramanga, Colombia.
| | - Diego Andrés Leal-Rueda
- Grupo de Investigación en Ciencias Animales GRICA, Facultad de Medicina Veterinaria y Zootecnia, Universidad Cooperativa de Colombia UCC, Bucaramanga, Colombia
| | - Juan David Jaimes-Dueñez
- Grupo de Investigación en Ciencias Animales GRICA, Facultad de Medicina Veterinaria y Zootecnia, Universidad Cooperativa de Colombia UCC, Bucaramanga, Colombia
| | - Diana Isabel Cáceres-Rivera
- Grupo de Investigación para el fortalecimiento de la salud y el bienestar GIFOSABI, Facultad de Enfermería, Universidad Cooperativa de Colombia UCC, Bucaramanga, Colombia
| | - Adriana Castillo-Castañeda
- Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
| | - Juan David Ramírez
- Centro de Investigaciones en Microbiología y Biotecnología-UR (CIMBIUR), Facultad de Ciencias Naturales, Universidad del Rosario, Bogotá, Colombia
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20
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Davis RJ, Belikoff EJ, Dickey AN, Scholl EH, Benoit JB, Scott MJ. Genome and transcriptome sequencing of the green bottle fly, Lucilia sericata, reveals underlying factors of sheep flystrike and maggot debridement therapy. Genomics 2021; 113:3978-3988. [PMID: 34619342 DOI: 10.1016/j.ygeno.2021.10.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 09/03/2021] [Accepted: 10/01/2021] [Indexed: 12/13/2022]
Abstract
The common green bottle blow fly Lucilia sericata (family, Calliphoridae) is widely used for maggot debridement therapy, which involves the application of sterile maggots to wounds. The larval excretions and secretions are important for consuming necrotic tissue and inhibiting bacterial growth in wounds of patients. Lucilia sericata is also of importance as a pest of sheep and in forensic studies to estimate a postmortem interval. Here we report the assembly of a 565.3 Mb genome from long read PacBio DNA sequencing of genomic DNA. The genome contains 14,704 predicted protein coding genes and 1709 non-coding genes. Targeted annotation and transcriptional analyses identified genes that are highly expressed in the larval salivary glands (secretions) and Malpighian tubules (excretions) under normal growth conditions and following heat stress. The genomic resources will underpin future genetic studies and in development of engineered strains for genetic control of L. sericata and for biotechnology-enhanced maggot therapy.
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Affiliation(s)
- Rebecca J Davis
- Department of Entomology and Plant Pathology, North Carolina State University, Campus Box 7613, Raleigh, NC 27695-7613, USA.
| | - Esther J Belikoff
- Department of Entomology and Plant Pathology, North Carolina State University, Campus Box 7613, Raleigh, NC 27695-7613, USA.
| | - Allison N Dickey
- Bioinformatics Research Center, North Carolina State University, Campus Box 7566, Raleigh, NC 27695-7566, USA.
| | - Elizabeth H Scholl
- Bioinformatics Research Center, North Carolina State University, Campus Box 7566, Raleigh, NC 27695-7566, USA.
| | - Joshua B Benoit
- Department of Biological Sciences, University of Cincinnati, Cincinnati, OH 45211, USA.
| | - Maxwell J Scott
- Department of Entomology and Plant Pathology, North Carolina State University, Campus Box 7613, Raleigh, NC 27695-7613, USA.
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21
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Gao Y, Fu Y, Yan L, Hu D, Jiang B, Zhang D. First record of traumatic myiasis obtained from forest musk deer ( Moschus berezovskii). INTERNATIONAL JOURNAL FOR PARASITOLOGY-PARASITES AND WILDLIFE 2021; 16:70-74. [PMID: 34458090 PMCID: PMC8379354 DOI: 10.1016/j.ijppaw.2021.08.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/26/2021] [Revised: 08/08/2021] [Accepted: 08/09/2021] [Indexed: 12/01/2022]
Abstract
Myiasis is an infestation of maggots on living tissue in humans and animals all over the world. It is known to occur in wild animals, while no information is reported in forest musk deer (Moschus berezovskii). During our research on the conservation of forest musk deer, we found a new record of traumatic myiasis of an injured forest musk deer. The flies are likely Lucilia caesar (Linnaeus, 1758) according to the results of DNA barcoding technology. We report traumatic myiasis of forest musk deer for the first time, which expands the information on parasite and myiasis of forest musk deer and confirms the potential risk of traumatic myiasis of forest musk deer.
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Affiliation(s)
- Yunyun Gao
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Yajun Fu
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Liping Yan
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Defu Hu
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
| | - Benmo Jiang
- Fengxian Fengchun Jimin Credible Science and Technology Breeding Co., Ltd., Shaanxi, China
| | - Dong Zhang
- School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China
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22
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Disruption of the odorant coreceptor Orco impairs foraging and host finding behaviors in the New World screwworm fly. Sci Rep 2021; 11:11379. [PMID: 34059738 PMCID: PMC8167109 DOI: 10.1038/s41598-021-90649-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 05/12/2021] [Indexed: 12/03/2022] Open
Abstract
The evolution of obligate ectoparasitism in blowflies (Diptera: Calliphoridae) has intrigued scientists for over a century, and surprisingly, the genetics underlying this lifestyle remain largely unknown. Blowflies use odors to locate food and oviposition sites; therefore, olfaction might have played a central role in niche specialization within the group. In insects, the coreceptor Orco is a required partner for all odorant receptors (ORs), a major gene family involved in olfactory-evoked behaviors. Hence, we characterized the Orco gene in the New World screwworm, Cochliomyia hominivorax, a blowfly that is an obligate ectoparasite of warm-blooded animals. In contrast, most of the closely related blowflies are scavengers that lay their eggs on dead animals. We show that the screwworm Orco orthologue (ChomOrco) is highly conserved within Diptera, showing signals of strong purifying selection. Expression of ChomOrco is broadly detectable in chemosensory appendages, and is related to morphological, developmental, and behavioral aspects of the screwworm biology. We used CRISPR/Cas9 to disrupt ChomOrco and evaluate the consequences of losing the OR function on screwworm behavior. In two-choice assays, Orco mutants displayed an impaired response to floral-like and animal host-associated odors, suggesting that OR-mediated olfaction is involved in foraging and host-seeking behaviors in C. hominivorax. These results broaden our understanding of the chemoreception basis of niche occupancy by blowflies.
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23
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Reed K, Reynolds SB, Smith C. The First Case of Ignatzschineria ureiclastica/larvae in the United States Presenting as a Myiatic Wound Infection. Cureus 2021; 13:e14518. [PMID: 34007769 PMCID: PMC8126268 DOI: 10.7759/cureus.14518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Ignatzschineria is a recently identified genus of bacteria that has been isolated from the digestive tract of multiple flies associated with decomposing tissue. Species within this genus are rarely implicated in human disease, and less than 10 cases worldwide have been documented in the literature. Although there have been several documented cases of Ignatzschineria indica bacteremia in the United States (with one previous case in Louisville, KY), this case represents the first documented case of Ignatzschineria ureiclastica/larvae bacteremia in the United States. The natural insect host of this bacteria, parasitic flies that are commonly found among sheep and other livestock, may pose a public health hazard in the city and implicate geographic spread of this bacteria species and its host.
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Affiliation(s)
- Kasey Reed
- Internal Medicine/Pediatrics, University of Louisville School of Medicine, Louisville, USA
| | - Samuel B Reynolds
- Internal Medicine, University of Louisville School of Medicine, Louisville, USA
| | - Clayton Smith
- Internal Medicine, University of Louisville School of Medicine, Louisville, USA
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24
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Moore HE, Hall MJR, Drijfhout FP, Cody RB, Whitmore D. Cuticular hydrocarbons for identifying Sarcophagidae (Diptera). Sci Rep 2021; 11:7732. [PMID: 33833323 PMCID: PMC8032779 DOI: 10.1038/s41598-021-87221-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 03/15/2021] [Indexed: 11/28/2022] Open
Abstract
The composition and quantity of insect cuticular hydrocarbons (CHCs) can be species-specific as well as sexually dimorphic within species. CHC analysis has been previously used for identification and ageing purposes for several insect orders including true flies (Diptera). Here, we analysed the CHC chemical profiles of adult males and females of eleven species of flesh flies belonging to the genus Sarcophaga Meigen (Sarcophagidae), namely Sarcophaga africa (Wiedemann), S. agnata Rondani, S. argyrostoma Robineau-Desvoidy, S. carnaria (Linnaeus), S. crassipalpis Macquart, S. melanura Meigen, S. pumila Meigen, S. teretirostris Pandellé, S. subvicina Rohdendorf, S. vagans Meigen and S. variegata (Scopoli). Cuticular hydrocarbons extracted from pinned specimens from the collections of the Natural History Museum, London using a customised extraction technique were analysed using Gas Chromatography-Mass Spectrometry. Time of preservation prior to extraction ranged between a few weeks to over one hundred years. CHC profiles (1) allowed reliable identification of a large majority of specimens, (2) differed between males and females of the same species, (3) reliably associated males and females of the same species, provided sufficient replicates (up to 10) of each sex were analysed, and (4) identified specimens preserved for up to over one hundred years prior to extraction.
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Affiliation(s)
- Hannah E Moore
- Cranfield Forensic Institute, Cranfield University, Defence Academy of the United Kingdom, Shrivenham, Wiltshire, SN6 8LA, UK.
| | - Martin J R Hall
- Department of Life Sciences, Natural History Museum, Cromwell Road, London, SW7 5BD, UK
| | - Falko P Drijfhout
- Chemical Ecology Group, School of Chemical and Physical Science, Keele University, Keele, ST5 5BG, England, UK
| | - Robert B Cody
- JEOL USA, Inc. 11 Dearborn Rd., Peabody, MA, 01969, USA
| | - Daniel Whitmore
- Staatliches Museum für Naturkunde Stuttgart, Rosenstein 1, 70191, Stuttgart, Germany
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Efficacy of afoxolaner (NexGard®) on the treatment of myiasis caused by the New World screwworm fly Cochliomyia hominivorax (Diptera: Calliphoridae) in naturally infested dogs. VETERINARY PARASITOLOGY- REGIONAL STUDIES AND REPORTS 2021; 24:100569. [PMID: 34024385 DOI: 10.1016/j.vprsr.2021.100569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 03/18/2021] [Accepted: 04/01/2021] [Indexed: 11/23/2022]
Abstract
New World screwworm (NWS) myiasis is an infestation by Cochliomyia hominivorax larvae that consume the living tissue of warm-blooded animals, including humans. Domestic dogs are among the potential hosts of these flies that lay their eggs on the edges of wounds. NWS myiasis cases can be fatal if untreated. Treatment with parasiticides must be fast-acting, long-lasting and show 100% efficacy, since open wounds can be reinfested. Afoxolaner is a molecule from the isoxazoline family with proven ectoparasiticide action against fleas, ticks and mites in dogs. Fourteen healthy client-owned dogs, naturally infested by C. hominivorax larvae, were treated with afoxolaner (NexGard®) as per label recommendations, providing at least the minimum dosage of 2.5 mg/kg. Maggot infestations were classified as light (fewer than 10 larvae), mild (from 10 to 20 larvae) or severe (more than 20 larvae), according to the number of larvae found in the wound and/or collected from the ground after treatment. Twenty-four hours post-treatment, infested lesions were carefully inspected and collected larvae were counted and classified as live or dead. All maggots were identified as second and third instar larvae of C. hominivorax and were found dead within 24 h after treatment, demonstrating 100% larvicidal efficacy against C. hominivorax.
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Kotzé Z, Aimar S, Amendt J, Anderson GS, Bourguignon L, Hall MJ, Tomberlin JK. The Forensic Entomology Case Report-A Global Perspective. INSECTS 2021; 12:insects12040283. [PMID: 33805963 PMCID: PMC8064325 DOI: 10.3390/insects12040283] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 03/19/2021] [Accepted: 03/22/2021] [Indexed: 11/16/2022]
Abstract
Forensic practitioners analyzing entomological evidence are faced with numerous challenges when presenting their findings to law practitioners, particularly in terms of terminology used to describe insect age, what this means for colonization time of remains, and the limitations to estimates made. Due to varying legal requirements in different countries, there is no standard format for the entomological case report prepared, nor any guidelines as to the sections that are required, optional or unnecessary in a case report. The authors herein propose sections that should be considered when drafting an entomological case report. The criteria under which entomological evidence is analyzed are discussed, as well as the limitations for each criterion. The concept of a global, standardized entomological case report is impossible to achieve due to national legislative differences, but the authors here propose a basic template which can be adapted and changed according to the needs of the practitioner. Furthermore, while the discussion is fairly detailed, capturing all differences between nations could not be accomplished, and those initiating casework for the first time are encouraged to engage other practicing forensic entomologists or professional associations within their own nation or region, to ensure a complete report is generated that meets lab or national requirements, prior to generating a finalized report.
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Affiliation(s)
- Zanthé Kotzé
- Department of Entomology, Texas A&M University, 400 Bizzell St., College Station, TX 77843, USA;
- Correspondence:
| | - Sylvain Aimar
- Forensics Fauna and Flora Unit, Forensic Sciences Laboratory of the French Gendarmerie, 95000 Pontoise, France;
| | - Jens Amendt
- Institute of Legal Medicine, University Hospital Frankfurt/Main, Goethe-University, 60323 Frankfurt, Germany;
| | - Gail S. Anderson
- Centre for Forensic Research, School of Criminology, Simon Fraser University, Burnaby, BC V5A 1S6, Canada;
| | - Luc Bourguignon
- National Institute for Criminalistics and Criminology, 1120 Brussels, Belgium;
| | - Martin J.R. Hall
- Department of Life Sciences, Natural History Museum, London SW7 5BD, UK;
| | - Jeffery K. Tomberlin
- Department of Entomology, Texas A&M University, 400 Bizzell St., College Station, TX 77843, USA;
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Rodrigues FT, D'Acri AM, Lessa CSS, Aguiar VM. Profile of pediatric patients with myiasis treated at a tertiary hospital in Rio de Janeiro. An Bras Dermatol 2021; 96:369-372. [PMID: 33812747 PMCID: PMC8178555 DOI: 10.1016/j.abd.2020.05.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 04/26/2020] [Accepted: 05/30/2020] [Indexed: 12/03/2022] Open
Affiliation(s)
| | - Antonio Macedo D'Acri
- Service of Dermatology, Hospital Universitário Gaffrée e Guinle, Escola de Medicina e Cirurgia, Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Claudia Soares Santos Lessa
- Departament of Microbiology and Parasitology, Instituto Biomédico, Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Valéria Magalhães Aguiar
- Departament of Microbiology and Parasitology, Instituto Biomédico, Universidade Federal do Estado do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
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28
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Osorio-Pinzon J, Palencia A, Cruz-Calderon S, Rodriguez-Morales AJ. Myiasis and Tungiasis. CURRENT TROPICAL MEDICINE REPORTS 2021. [DOI: 10.1007/s40475-021-00233-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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29
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Pezzi M, Scapoli C, Chicca M, Leis M, Marchetti MG, Del Zingaro CNF, Vicentini CB, Mamolini E, Giangaspero A, Bonacci T. Cutaneous myiasis in cats and dogs: Cases, predisposing conditions and risk factors. Vet Med Sci 2020; 7:378-384. [PMID: 33336900 PMCID: PMC8025654 DOI: 10.1002/vms3.370] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 03/19/2020] [Accepted: 09/09/2020] [Indexed: 11/10/2022] Open
Abstract
Two cases of cutaneous myiasis diagnosed in 2018 in Emilia‐Romagna region (northern Italy) were reported. The first one, described in a domestic cat Felis silvestris catus L. (Carnivora: Felidae) and caused by Calliphora vicina Robineau‐Desvoidy (Diptera: Calliphoridae), was the first one of this type ever reported in Italy in cats. The second one was described in a domestic dog Canis lupus familiaris L. (Carnivora: Canidae) and caused by Lucilia sericata (Meigen) (Diptera: Calliphoridae) and was unusual because it occurred in absence of lesions. An extensive literature search on cutaneous myiasis in these two domestic animal species was performed in order to draw attention to predisposing conditions and risk factors.
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Affiliation(s)
- Marco Pezzi
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Chiara Scapoli
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Milvia Chicca
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Marilena Leis
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | | | | | | | - Elisabetta Mamolini
- Department of Life Sciences and Biotechnology, University of Ferrara, Ferrara, Italy
| | - Annunziata Giangaspero
- Department of the Sciences of Agriculture, Food and Environment, University of Foggia, Foggia, Italy
| | - Teresa Bonacci
- Department of Biology, Ecology and Earth Science, University of Calabria, Arcavacata di Rende, Cosenza, Italy
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Shilpakar O, Karki B, Rajbhandari B. Cutaneous myiasis in a neglected elderly. Oxf Med Case Reports 2020; 2020:omaa063. [PMID: 32793367 PMCID: PMC7416825 DOI: 10.1093/omcr/omaa063] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/23/2020] [Accepted: 06/28/2020] [Indexed: 11/13/2022] Open
Affiliation(s)
- Olita Shilpakar
- Department of General Practice and Emergency Medicine, NAMS, Bir Hospital, Kathmandu, Nepal
| | - Bipin Karki
- Department of Critical Care Medicine, Om Hospital and Research Centre, Kathmandu, Nepal
| | - Bibek Rajbhandari
- Department of General Practice and Emergency Medicine, Nepal Police Hospital, Kathmandu, Nepal
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31
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Farghaly DS, Sadek ASM. Trypanocidal activity of methanol extracts of the hemolymph of Sarcophaga argyrostoma larva against Trypanosoma evansi infected mice. Vet World 2020; 13:1599-1604. [PMID: 33061233 PMCID: PMC7522962 DOI: 10.14202/vetworld.2020.1599-1604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 06/24/2020] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND AND AIM Many natural products worldwide are used for medicinal purposes. Various insect-isolated compounds were investigated in pursuit of new therapeutic agents. This study aimed to compare the effects of methanol extract of hemolymph of Sarcophaga argyrostoma larvae with diminazene aceturate on some hematological and biochemical indices of mice infected with Trypanosoma evansi. MATERIALS AND METHODS Sixteen albino mice were randomly divided into four groups, of four mice, which received different treatments: In Group 1 (G1), mice were infected intraperitoneally with 1×104 T. evansi and received no treatment (positive control), in Group 2 (G2), infected mice were treated with 0.5 mL/kg of diminazene aceturate, in Group 3 (G3), infected mice were treated with 0.5 mL/kg methanol extract of the hemolymph of S. argyrostoma larvae, and in Group 4 (G4), uninfected mice received 0.5 ml of distilled water (negative control). In G3, treatment was started 3 days before injecting the parasite, while for the other groups, a single dose of treatment was applied when the parasite appeared in the blood. RESULTS Mice from G3 showed low parasitemia of 29×104/mm3 4 days post-infection until the infection completely disappeared on the 5th day, which was earlier than for other groups. The results showed that the numbers of red blood corpuscles (red blood cells [RBCs]) and white blood cells (WBCs) per unit volume were significantly different (p<0.05) between the four groups. The highest RBC (9.09×103 cell/ mm3) and WBC (14.30×103 cell/ mm3) counts were recorded in G3, whereas the lowest values of 6.60 and 4.60×103cell/ mm3, respectively, were recorded for G2. In addition, there were significant differences (p<0.05) between the different groups for platelet counts per unit volume, with G3 having the most (943×103 cell/ mm3) and G2 having the least (357×103 cell/ mm3). There was a significant (p<0.05) difference in the indices of biochemical activities between the extract-treated infected groups and the standard drug-treated group. CONCLUSION This study suggests that the methanol extract of the hemolymph of S. argyrostoma larva exhibits trypanocidal activity, so it may be exploited as a suitable candidate for the development of trypanocidal drugs.
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Affiliation(s)
- Doaa S. Farghaly
- Department of Zoology and Entomology, College of Science, Al-Azhar University, P. O. 11765, Cairo 11865, Egypt
| | - Al-Shaimaa M. Sadek
- Department of Zoology and Entomology, College of Science, Al-Azhar University, P. O. 11765, Cairo 11865, Egypt
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Abstract
The report describes a case of urogenital myiasis in a puppy, Canis lupus familiaris (Carnivora: Canidae) caused by Wohlfahrtia magnifica (Diptera: Sarcophagidae) in Calabria, southern Italy. This species is an obligatory agent of myiasis in human and other warm-blooded vertebrates. The puppy was healthy and was not living near farm animals, usual hosts of this flesh fly. An overview of cases of human and animal myiasis caused by W. magnifica in Italy and of data and specimens documented in entomology museum collections is also reported.
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33
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Pittner S, Bugelli V, Weitgasser K, Zissler A, Sanit S, Lutz L, Monticelli F, Campobasso CP, Steinbacher P, Amendt J. A field study to evaluate PMI estimation methods for advanced decomposition stages. Int J Legal Med 2020; 134:1361-1373. [PMID: 32248308 PMCID: PMC7295721 DOI: 10.1007/s00414-020-02278-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Accepted: 03/12/2020] [Indexed: 12/16/2022]
Abstract
Estimating the postmortem interval (PMI) is one of the major tasks and a continuous challenge in forensic pathology. It is often an exclusion process of available methods, which ultimately can lead to an unsatisfactory outcome due to poor reliability. This problem is most acute in the late PMI, when decomposition proceeds and some methods (such as rigor, livor, and algor mortis) are no longer applicable. Several methods, such as forensic entomology, skeletal muscle protein degradation, and the study of body decomposition by application of a morphological scoring, are expected to provide further information; however, all have certain limitations and weaknesses. Availability of a tool-box of methods allows a case-specific selection of the most appropriate one(s), or eventually provides improvements in the overall accuracy and precision of the PMI estimation by merging and combining methods. To investigate practical (field) application, eventual interferences, and/or synergetic effects, as well as the robustness of these methods towards specific influencing factors, a field study was conducted, using eight pig cadavers of different body weights and physical coverage, left to decompose under natural conditions for 16 days. Morphological changes during decomposition were assessed using the total body score (TBS), muscle samples were collected to analyze protein degradation, and insect colonization was evaluated. The results reveal strengths and current limitations of all tested methods, as well as promising synergistic effects, and thus, provide a baseline for targeted future research.
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Affiliation(s)
- Stefan Pittner
- Department of Forensic Medicine, University of Salzburg, Salzburg, Austria.
| | - Valentina Bugelli
- Department of Medicine and Health Sciences, University of Molise, Campobasso, Italy
| | | | - Angela Zissler
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Sangob Sanit
- Department of Parasitology, Chiang Mai University, Chiang Mai, Thailand
| | - Lena Lutz
- Institute of Legal Medicine, Goethe-University Frankfurt, Frankfurt, Germany
| | - Fabio Monticelli
- Department of Forensic Medicine, University of Salzburg, Salzburg, Austria
| | - Carlo P Campobasso
- Department of Experimental Medicine, University L. Vanvitelli of Campania, Aversa, Italy
| | - Peter Steinbacher
- Department of Biosciences, University of Salzburg, Salzburg, Austria
| | - Jens Amendt
- Institute of Legal Medicine, Goethe-University Frankfurt, Frankfurt, Germany
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34
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Ren L, Zhang X, Li Y, Shang Y, Chen S, Wang S, Qu Y, Cai J, Guo Y. Comparative analysis of mitochondrial genomes among the subfamily Sarcophaginae (Diptera: Sarcophagidae) and phylogenetic implications. Int J Biol Macromol 2020; 161:214-222. [PMID: 32526299 DOI: 10.1016/j.ijbiomac.2020.06.043] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 05/25/2020] [Accepted: 06/05/2020] [Indexed: 12/16/2022]
Abstract
The subfamily Sarcophaginae is extremely diverse in morphology, habit and geographical distribution, and usually considered to be of significant ecological, medical, and forensic significance. In the present study, 18 mitochondrial genomes (mitogenomes) of sarcophagid flies were first obtained. The rearrangement and orientation of genes were identical with that of ancestral insects. The degrees of compositional heterogeneity in the datasets were extremely low. Furthermore, 13 protein-coding genes were evolving under purifying selection. The phylogenic relationship of the genus-group taxa Boettcheria + (Sarcophaga + (Peckia + (Ravinia + Oxysarcodexia))) was strongly supported. Four subgenera were recovered as monophyletic (Liopygia, Liosarcophaga, Pierretia, Heteronychia) in addition to Parasarcophaga as polyphyletic. The sister-relationships between S. dux and S. aegyptiaca, S. pingi and S. kawayuensis were recovered, respectively. Moreover, the molecular phylogenetic relationships among the subgenera Helicophagella, Kozlovea, Kramerea, Pandelleisca, Phallocheira, Pseudothyrsocnema, Sinonipponia and Seniorwhitea were rarely put forward prior to this study. This study provides insight into the population genetics, molecular biology, and phylogeny for the subfamily Sarcophaginae, especially for the subgeneric classification of Sarcophaga. However, compared with the enormous species diversity of flesh flies, the available mitogenomes are still limited for recovering the phylogeny of Sarcophaginae.
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Affiliation(s)
- Lipin Ren
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China
| | - Xiangyan Zhang
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China
| | - Yi Li
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China
| | - Yanjie Shang
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China
| | - Shan Chen
- School of Ecological and Environmental Sciences, East China Normal University, Shanghai, China
| | - Shiwen Wang
- Department of Forensic Science, School of Basic Medical Sciences, Xinjiang Medical University, Ürümqi, Xinjiang, China
| | - Yihong Qu
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China
| | - Jifeng Cai
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China
| | - Yadong Guo
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China.
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Carnauba wax enhances the insecticidal activity of entomopathogenic fungi against the blowfly Lucilia sericata (Diptera: Calliphoridae). J Invertebr Pathol 2020; 174:107391. [PMID: 32416086 DOI: 10.1016/j.jip.2020.107391] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 04/24/2020] [Accepted: 05/10/2020] [Indexed: 12/17/2022]
Abstract
Blowfly, Lucilia sericata (Diptera: Calliphoridae), is a problematic synanthropic insect pest, a vector of microbial pathogens, and the causal agent of secondary myiasis. Fungal biopesticides are considered eco-friendly tools, alternative to synthetic pesticides, for the control of arthropod pests; however, to date, little is known about their bioactivity against blowflies. In this study, we assessed the insecticidal activity of three well-known entomopathogenic fungi, Beauveria bassiana, Beauveria pseudobassiana and Akanthomyces muscarius against L. sericata. In addition, we tested powdered carnauba wax as an electrically charged dust carrier in an attempt to enhance the virulence of fungal spores. Pathogenicity tests on adult flies, by adult immersion in conidial suspension (108 conidia mL-1), showed that the median lethal time (LT50) was 5.3, 5.9, and 6.2 days for B. bassiana, A. muscarius and B. pseudobassiana, respectively. In topical tests, when 108 dry conidia were mixed with or without carnauba wax, the LT50 was 7.7, 10.2, and 14 days without this carrier and 6.9, 8.6, and 13.8 days with it for B. bassiana, B. pseudobassiana and A. muscarius, respectively. Overall, our findings showed that, among the tested fungi, B. bassiana was the most virulent when formulated as a dry powder with carnauba wax, which greatly improved fungal efficacy against the blowfly. We discuss the utility of carnauba wax for electrostatic formulation powder of fungal spores in the integrated management of blowflies as an environmentally sustainable tool to reduce the over-reliance on chemical insecticides and their risk of resistance.
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Modeling current and future global distribution of Chrysomya bezziana under changing climate. Sci Rep 2020; 10:4947. [PMID: 32188920 PMCID: PMC7080715 DOI: 10.1038/s41598-020-61962-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 03/06/2020] [Indexed: 11/08/2022] Open
Abstract
In the last few years, significant changes in climate have had a disparate effect on biodiversity. The influences of these changes are random and unpredictable. The resurgence of insect pests, especially of medical and veterinary importance, often corresponds with climate changes. The Old World screwworm, Chrysomya bezziana, is one of the most important myiasis-causing flies that parasitize warm-blooded animals in the Eastern Hemisphere. We used a spatial distribution modeling approach to estimate the consequences of climatic changes on the potential geographic distribution of this insect throughout the world currently and in the future. A Maxent model used occurrence data from 104 localities and 19 climatic factors to predict the suitable habitat regions throughout the world. Two representative concentration pathways 2.6 and 8.5, were used to forecast the future distribution of C. bezziana in 2050 and 2070. The Maxent model for C. bezziana provided a satisfactory result, with a high value of the Area Under Curve equal to 0.855 (±0.001). Furthermore, the True Skilled Statistics value is equal to 0.67. These values indicate the significant influence on the model of the ecology of this fly species. Jackknife test indicated that temperature variables play a significant role in C. bezziana dynamics. The resultant models indicated the areas at risk of invasion by potential serious medical/veterinary issues, especially in countries with a large livestock production.
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Ruiz-Zapata JD, Figueroa-Gutiérrez LM, Mesa-Franco JA, Moreno-Gutierrez PA. Umbilical Myiasis by Cochliomyia hominivorax in an Infant in Colombia. Front Med (Lausanne) 2020; 6:292. [PMID: 32039212 PMCID: PMC6987426 DOI: 10.3389/fmed.2019.00292] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Accepted: 11/28/2019] [Indexed: 11/20/2022] Open
Abstract
Myasis is the infestation by fly larvae (Diptera) in live vertebrates including humans. Myasis has been reported most commonly in tropical and subtropical areas around the world with poor sanitation and presence of cattle. Neonatal umbilical myiasis is an important cause of death in bovines and produces major economic losses in the livestock industry. However, its presentation in humans is rare, with a few cases reported worldwide. Moreover, umbilical myasis can be life-treating due to the risk of larvae migration to deeper tissues of the abdomen, omphalitis, and sepsis. We describe the case of a 7-day-old infant admitted to the hospital due to umbilical cord myiasis. In total, 55 larvae were removed from the wound and identified as Cochliomyia hominivorax. The patient recovered satisfactorily after treatment with ivermectin and amoxicillin. A literature search was performed in Pubmed, Medline, Lilacs and Google Scholar, with 64 cases of myasis by C. hominivorax being reviewed. Oral cavity, wounds, scalp and natural orifices are the main affected anatomical areas. Risk factors include the extremes of age, male sex, poor hygiene, alcohol and drug use, cancer, and mental disability. Programs for human myiasis prevention and surveillance are needed in neotropical areas where living conditions make it difficult to implement control strategies.
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Barros GPD, Bricarello PA. Myiasis by <i>Cochliomyia hominivorax</i> (Coquerel, 1858): A Neglected Zoonosis in Brazil. ACTA ACUST UNITED AC 2020. [DOI: 10.4236/ojvm.2020.106007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Huang YL, Liu L, Liang H, He J, Chen J, Liang QW, Jiang ZY, He JF, Huang ML, Du Y. Orbital myiasis: A case report and literature review. Medicine (Baltimore) 2020; 99:e18879. [PMID: 31977893 PMCID: PMC7004749 DOI: 10.1097/md.0000000000018879] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
RATIONALE Myiasis is a parasitic disease caused by fly larvae of the Diptera order that infest human and other vertebrate animal tissues. Orbital myiasis is a potentially destructive infestation of the orbital tissues, which may affect individuals with previous ocular diseases or disorders of consciousness. PATIENT CONCERNS A 72-year-old man presented with a complaint of repeated pain for two years after trauma to his right eyelid and aggravated symptoms with larvae wriggling out for 2 days. An orbital computed tomography scan revealed right eyeball protrusion and periocular soft tissue edema. Two days later, magnetic resonance imaging showed that the shape of the right eyeball was changed and that the normal structure of the eyeball could not be identified. DIAGNOSES Due to the patient's symptoms and imaging examination results, the diagnosis of orbital myiasis was made. INTERVENTIONS The patient was treated by exenteration of the right orbit, and all necrotic tissues and larvae were removed. The defect was repaired via reconstruction with a pedicled musculocutaneous flap from the forehead region. Antibiotics and tetanus toxoid therapy were utilized to prevent potential bacterial infection. OUTCOMES The patient recovered well postoperatively and was discharged uneventfully. During the 6-month follow-up period, the wound healed well. LESSONS Advanced age and untreated eye trauma are risk factors for orbital myiasis. Timely removal of larvae and elimination of infections are important measures for protecting the eyeball.
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Affiliation(s)
| | - Lu Liu
- Guangxi Medical College, Nanning, Guangxi, China
| | | | | | | | | | - Zhi-Yuan Jiang
- Department of Hypertension division, the First Affiliated Hospital of Guangxi Medical University
| | | | | | - Yi Du
- Department of Ophthalmology
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40
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Niederegger S, Akbarzadeh K, Szpila K. Muscle attachment site patterns for species determination in West Palaearctic Wohlfahrtia (Diptera: Sarcophagidae) of medical and veterinary importance. Sci Rep 2019; 9:19151. [PMID: 31844098 PMCID: PMC6915748 DOI: 10.1038/s41598-019-55127-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2019] [Accepted: 11/19/2019] [Indexed: 11/17/2022] Open
Abstract
The flesh fly genus Wohlfahrtia Brauer & Bergenstamm contains at least six species of medical and veterinary importance. Traditional methods of species identification in specimens of Wohlfahrtia, however, are restricted mostly to adult forms. Muscle attachment site (MAS) patterns allow for species determination in larval forms. MAS patterns in third instar larvae of six common West Palearctic species of Wohlfahrtia have been analyzed for this study. As in previously investigated Calliphoridae and Sarcophagidae, MAS patterns were found to be species specific. A genus pattern was established to be used as base for comparison in further species determination. For the first time a tool is provided for species identification of such broad range in larvae of Wohlfahrtia species. Wohlfahrtia patterns are composed of a significantly higher number of MAS than patterns found in Sarcophaga. Specifics of the six species analyzed are explained in detail. The larvae of the well-known species W. magnifica, an obligate traumatic myiasis agent, had to be excluded from the analysis as a great number of spines on the outside obscure muscle attachment sites on the inside of the cuticle.
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Affiliation(s)
- Senta Niederegger
- Department of Forensic Entomology, Institute of Legal Medicine at the University Hospital Jena, 07740, Jena, Germany.
| | - Kamran Akbarzadeh
- Department of Medical Entomology & Vector Control, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran
| | - Krzysztof Szpila
- Department of Ecology and Biogeography, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University, Lwowska 1, 87-100, Toruń, Poland
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Fang F, Chang Q, Sheng Z, Zhang Y, Yin Z, Guillot J. Chrysomya bezziana: a case report in a dog from Southern China and review of the Chinese literature. Parasitol Res 2019; 118:3237-3240. [PMID: 31655903 DOI: 10.1007/s00436-019-06464-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Accepted: 09/22/2019] [Indexed: 11/25/2022]
Abstract
Chrysomya bezziana is an obligate, myiasis-causing fly in humans and warm-blooded animals throughout the tropical and subtropical Old World. We report a case of cutaneous myiasis due to C. bezziana in a dog from Guangxi province in China. A total of 35 maggots were removed from the lesions. Direct sequencing of the mitochondrial cytochrome b gene showed that the specimen belonged to haplotype CB_bezz02, which was previously reported in Malaysia and the Gulf region. This paper also reviews reported cases of screwworm myiasis from humans and animals in China. Geographical records indicate that the distribution of C. bezziana is expanding, suggesting that an integrated pest management control should be taken into consideration in China.
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Affiliation(s)
- Fang Fang
- Parasitology Department, College of Animal Science and Technology, Guangxi University, Nanning, China.
| | - Qinghua Chang
- Parasitology Department, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Zhaoan Sheng
- Parasitology Department, College of Animal Science and Technology, Guangxi University, Nanning, China
| | - Yu Zhang
- Parasitology Department, College of Animal Science and Technology, Guangxi University, Nanning, China
| | | | - Jacques Guillot
- Parasitology Department, Ecole Nationale Vétérinaire d'Alfort, Maisons-Alfort, France
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Paulo DF, Williamson ME, Arp AP, Li F, Sagel A, Skoda SR, Sanchez-Gallego J, Vasquez M, Quintero G, Pérez de León AA, Belikoff EJ, Azeredo-Espin AML, McMillan WO, Concha C, Scott MJ. Specific Gene Disruption in the Major Livestock Pests Cochliomyia hominivorax and Lucilia cuprina Using CRISPR/Cas9. G3 (BETHESDA, MD.) 2019; 9:3045-3055. [PMID: 31340950 PMCID: PMC6723136 DOI: 10.1534/g3.119.400544] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 07/23/2019] [Indexed: 02/07/2023]
Abstract
Cochliomyia hominivorax and Lucilia cuprina are major pests of livestock. Their larvae infest warm-blooded vertebrates and feed on host's tissues, resulting in severe industry losses. As they are serious pests, considerable effort has been made to develop genomic resources and functional tools aiming to improve their management and control. Here, we report a significant addition to the pool of genome manipulation tools through the establishment of efficient CRISPR/Cas9 protocols for the generation of directed and inheritable modifications in the genome of these flies. Site-directed mutations were introduced in the C hominivorax and L cuprina yellow genes (ChY and LcY) producing lightly pigmented adults. High rates of somatic mosaicism were induced when embryos were injected with Cas9 ribonucleoprotein complexes (RNPs) pre-assembled with guide RNAs (sgRNAs) at high concentrations. Adult flies carrying disrupted yellow alleles lacked normal pigmentation (brown body phenotype) and efficiently transmitted the mutated alleles to the subsequent generation, allowing the rapid creation of homozygous strains for reverse genetics of candidate loci. We next used our established CRISPR protocol to disrupt the C hominivorax transformer gene (Chtra). Surviving females carrying mutations in the Chtra locus developed mosaic phenotypes of transformed ovipositors with characteristics of male genitalia while exhibiting abnormal reproductive tissues. The CRISPR protocol described here is a significant improvement on the existing toolkit of molecular methods in calliphorids. Our results also suggest that Cas9-based systems targeting Chtra and Lctra could be an effective means for controlling natural populations of these important pests.
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Affiliation(s)
- Daniel F Paulo
- Centre for Molecular Biology and Genetic Engineering, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas
- Laboratory of Ecological and Evolutionary Genomics, Smithsonian Tropical Research Institute, Gamboa, Panama
| | - Megan E Williamson
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh NC
| | - Alex P Arp
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, Kerrville TX, and
| | - Fang Li
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh NC
| | - Agustin Sagel
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, Screwworm Research Site, Pacora, Panama
| | - Steven R Skoda
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, Screwworm Research Site, Pacora, Panama
| | - Joel Sanchez-Gallego
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, Screwworm Research Site, Pacora, Panama
| | - Mario Vasquez
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, Screwworm Research Site, Pacora, Panama
| | - Gladys Quintero
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, Screwworm Research Site, Pacora, Panama
| | - Adalberto A Pérez de León
- USDA-ARS, Knipling-Bushland U.S. Livestock Insects Research Laboratory and Veterinary Pest Genomics Center, Kerrville TX, and
| | - Esther J Belikoff
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh NC
| | - Ana M L Azeredo-Espin
- Centre for Molecular Biology and Genetic Engineering, Department of Genetics, Evolution, Microbiology and Immunology, University of Campinas
| | - W Owen McMillan
- Laboratory of Ecological and Evolutionary Genomics, Smithsonian Tropical Research Institute, Gamboa, Panama
| | - Carolina Concha
- Laboratory of Ecological and Evolutionary Genomics, Smithsonian Tropical Research Institute, Gamboa, Panama
| | - Maxwell J Scott
- Department of Entomology and Plant Pathology, North Carolina State University, Raleigh NC
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RETROSPECTIVE EVALUATION OF A NOVEL SUSTAINED-RELEASE IVERMECTIN VARNISH FOR TREATMENT OF WOUND MYIASIS IN ZOO-HOUSED ANIMALS. J Zoo Wildl Med 2019. [PMID: 29517452 DOI: 10.1638/2016-0299r2.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Myiasis is a major disease condition in human and veterinary medicine. Domestic, free-ranging, and zoo-housed animals can be severely affected by myiasis. Depending on case severity, multiple treatment episodes may be indicated and can lead to recurrent capturing, handling stress, and anesthetics, all of which increase the risk of adverse responses (including death) individually and also in the herd. As an insecticide, ivermectin is often used for larval control. A total of 28 individual myiasis cases were retrospectively evaluated, out of which 11 cases were also treated using an ivermectin sustained-release varnish (SRV). The clinical outcome of all cases was assessed and the results suggest that the use of a topical ivermectin SRV (with or without concurrent injectable ivermectin) can reduce handling and treatments, has no adverse effects, and has minimal recurrence of the disease when compared with cases treated without it.
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44
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Yan L, Zhang M, Tang L, Ente M, Ma X, Chu H, Li K, Hu D, Zhang D. First reports of nasal and traumatic myiasis infection in endangered Przewalski's horses ( Equus ferus przewalskii). Int J Parasitol Parasites Wildl 2019; 9:21-24. [PMID: 30976513 PMCID: PMC6441744 DOI: 10.1016/j.ijppaw.2019.03.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 03/15/2019] [Accepted: 03/23/2019] [Indexed: 11/27/2022]
Abstract
Myiasis has great economic and medical importance. However, myiasis in wildlife that is caused by oestroid flies is relatively rarely recorded compared with that in humans and domestic animals. Recently, during our research on the conservation of Przewalski's horse (PH), we observed two new records of oestroid flies parasitizing wildlife in China. The first is the horse nasal bot fly, Rhinoestrus sp. (Diptera: Oestridae), found in a dead PH from Kalamaili Nature Reserve. One morphotype (R. purpureus-like) was identified. The second is the Wohlfahrt's wound myiasis fly, Wohlfahrtia magnifica (Schiner, 1862) (Diptera: Sarcophagidae), which was collected from an open wound of a PH in the Wild Horse Breeding Research Centre. These observations extend the records of known hosts of these two oestroid myiasis agents. To the knowledge of the authors, infestation by Rhinoestrus and Wohlfahrtia larvae causing myiasis in wildlife has not been reported in China previously.
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Affiliation(s)
- Liping Yan
- School of Nature Conservation, Beijing Forestry University, Beijing, China
| | - Ming Zhang
- School of Nature Conservation, Beijing Forestry University, Beijing, China
| | - Liping Tang
- School of Nature Conservation, Beijing Forestry University, Beijing, China
| | - Make Ente
- Xinjiang Research Centre for Breeding Przewalski's Horse, Xinjiang, China
| | - Xinping Ma
- Xinjiang Research Centre for Breeding Przewalski's Horse, Xinjiang, China
| | - Hongjun Chu
- Wildlife Conservation Office of Altay Prefecture, Altay, Xinjiang, China
| | - Kai Li
- School of Nature Conservation, Beijing Forestry University, Beijing, China
| | - Defu Hu
- School of Nature Conservation, Beijing Forestry University, Beijing, China
| | - Dong Zhang
- School of Nature Conservation, Beijing Forestry University, Beijing, China
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Bedini S, Flamini G, Cosci F, Ascrizzi R, Echeverria MC, Gomez EV, Guidi L, Landi M, Lucchi A, Conti B. Toxicity and oviposition deterrence of essential oils of Clinopodium nubigenum and Lavandula angustifolia against the myiasis-inducing blowfly Lucilia sericata. PLoS One 2019; 14:e0212576. [PMID: 30785945 PMCID: PMC6382167 DOI: 10.1371/journal.pone.0212576] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 02/05/2019] [Indexed: 01/26/2023] Open
Abstract
Cutaneous myiasis is a severe worldwide medical and veterinary issue. In this trial the essential oil (EO) of the Andean medicinal plant species Clinopodium nubigenum (Kunth) Kuntze was evaluated for its bioactivity against the myiasis-inducing blowfly Lucilia sericata (Meigen) (Diptera Calliphoridae) and compared with that of the well-known medicinal plant species Lavandula angustifolia Mill. The EOs were analysed and tested in laboratory for their oviposition deterrence and toxicity against L. sericata adults. The physiology of EO toxicity was evaluated by enzymatic inhibition tests. The antibacterial and antifungal properties of the EOs were tested as well. At 0.8 μL cm-2, both EOs completely deterred L. sericata oviposition up to 3 hours. After 24 h, the oviposition deterrence was still 82.7% for L. angustifolia and the 89.5% for C. nubigenum. The two EOs were also toxic to eggs and adults of L. sericata. By contact/fumigation, the EOs, the LC50 values against the eggs were 0.07 and 0.48 μL cm-2 while, by topical application on the adults, LD50 values were 0.278 and 0.393 μL per individual for C. nubigenum and L. angustifolia EOs, respectively. Inhibition of acetylcholine esterase of L. sericata by EOs (IC50 = 67.450 and 79.495 mg L-1 for C. nubigenum and L. angustifolia, respectively) suggested that the neural sites are targets of the EO toxicity. Finally, the observed antibacterial and antifungal properties of C. nubigenum and L. angustifolia EOs suggest that they could also help prevent secondary infections.
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Affiliation(s)
- Stefano Bedini
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | - Guido Flamini
- Department of Pharmacy, University of Pisa, Pisa, Italy
| | - Francesca Cosci
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | | | - Maria C. Echeverria
- Facultad de Ingeniería en Ciencias Agropecuarias y Ambientales, Universidad Técnica del Norte, Ibarra, Ecuador
| | - Evelin V. Gomez
- Facultad de Ingeniería en Ciencias Agropecuarias y Ambientales, Universidad Técnica del Norte, Ibarra, Ecuador
| | - Lucia Guidi
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | - Marco Landi
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | - Andrea Lucchi
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
| | - Barbara Conti
- Department of Agriculture, Food and Environment, University of Pisa, Pisa, Italy
- * E-mail:
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46
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Welfare Dilemmas Created by Keeping Insects in Captivity. Anim Welf 2019. [DOI: 10.1007/978-3-030-13947-6_3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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47
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Bernhardt V, Finkelmeier F, Verhoff MA, Amendt J. Myiasis in humans-a global case report evaluation and literature analysis. Parasitol Res 2018; 118:389-397. [PMID: 30456490 DOI: 10.1007/s00436-018-6145-7] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 11/12/2018] [Indexed: 12/15/2022]
Abstract
Myiasis refers to the infestation of living humans and vertebrates with fly larvae that feed on necrotic or vital tissue of the host. Since the invasion of new fly species in Europe is currently being observed, which live obligatorily parasitically or are close relatives of such species, the aim of this study is to obtain a global overview of the distribution of myiasis-causing fly species in times of climate change and to assess the possible consequences for Western Europe. A systematic literature search was conducted using Pubmed/Medline for the years 1997 to 2017 and a total of 464 international case reports from 79 countries were evaluated. The described cases were caused by 41 different species. In 99.4% of the cases, it was a colonization by just one species, a maximum of three species were detected in a human. Casuistics from Western Europe mostly describe myiasis as a "holiday souvenir" from tropical regions. Reports of autochthonous cases are rare in comparison to other regions. With regard to rising temperatures and the invasion of new fly species, a noticeable increase in the number of cases in Western Europe is to be assumed, which could be an increasing problem in the clinical area and in care, which is why thorough monitoring for professional identification and treatment seems important in the future.
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Affiliation(s)
- Victoria Bernhardt
- Institute of Legal Medicine, University Hospital Frankfurt, Goethe-University, Frankfurt, Main, Germany.
| | - Fabian Finkelmeier
- Department of Medicine I, Gastroenterology, University Hospital Frankfurt, Goethe-University, Frankfurt, Main, Germany
| | - Marcel A Verhoff
- Institute of Legal Medicine, University Hospital Frankfurt, Goethe-University, Frankfurt, Main, Germany
| | - Jens Amendt
- Institute of Legal Medicine, University Hospital Frankfurt, Goethe-University, Frankfurt, Main, Germany
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Macleod N, Hall MJR, Wardhana AH. Towards the automated identification of Chrysomya blow flies from wing images. MEDICAL AND VETERINARY ENTOMOLOGY 2018; 32:323-333. [PMID: 29658151 DOI: 10.1111/mve.12302] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Revised: 01/17/2018] [Accepted: 01/20/2018] [Indexed: 06/08/2023]
Abstract
The Old World screwworm fly (OWSF), Chrysomya bezziana (Diptera: Calliphoridae), is an important agent of traumatic myiasis and, as such, a major human and animal health problem. In the implementation of OWSF control operations, it is important to determine the geographical origins of such disease-causing species in order to establish whether they derive from endemic or invading populations. Gross morphological and molecular studies have demonstrated the existence of two distinct lineages of this species, one African and the other Asian. Wing morphometry is known to be of substantial assistance in identifying the geographical origin of individuals because it provides diagnostic markers that complement molecular diagnostics. However, placement of the landmarks used in traditional geometric morphometric analysis can be time-consuming and subject to error caused by operator subjectivity. Here we report results of an image-based approach to geometric morphometric analysis for delivering wing-based identifications. Our results indicate that this approach can produce identifications that are practically indistinguishable from more traditional landmark-based results. In addition, we demonstrate that the direct analysis of digital wing images can be used to discriminate between three Chrysomya species of veterinary and forensic importance and between C. bezziana genders.
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Affiliation(s)
- N Macleod
- Department of Earth Sciences, Natural History Museum, London, U.K
| | - M J R Hall
- Department of Life Sciences, Natural History Museum, London, U.K
| | - A H Wardhana
- Department of Parasitology, Indonesian Research Centre for Veterinary Science, Bogor, Indonesia
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Ren L, Chen W, Shang Y, Meng F, Zha L, Wang Y, Guo Y. The Application of COI Gene for Species Identification of Forensically Important Muscid Flies (Diptera: Muscidae). JOURNAL OF MEDICAL ENTOMOLOGY 2018; 55:1150-1159. [PMID: 29788324 DOI: 10.1093/jme/tjy076] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Indexed: 06/08/2023]
Abstract
Muscid Flies (Diptera: Muscidae) are of great forensic importance due to their wide distribution, ubiquitous and synanthropic nature. They are frequently neglected as they tend to arrive at the corpses later than the flesh flies and blow flies. Moreover, the lack of species-level identification also hinders investigation of medicolegal purposes. To overcome the difficulty of morphological identification, molecular method has gained relevance. Cytochrome c oxidase subunit I (COI) gene has been widely utilized. Nonetheless, to achieve correct identification of an unknown sample, it is important to survey certain muscid taxa from its geographic distribution range. Accordingly, the aim of this study is to contribute more geographically specific. We sequenced the COI gene of 51 muscid specimens of 12 species, and added all correct sequences available in GenBank to yield a total data set of 125 COI sequences from 33 muscid species to evaluate the COI gene as a molecular diagnostic tool. The interspecific distances were extremely high (4.7-19.8%) in either the standard barcoding fragment (658 bp) or the long COI sequence (1,019-1,535 bp), demonstrating that these two genetic markers were nearly identical in the species identification. However, the intraspecific distances of the long COI sequences were significantly higher than the barcoding region for the conspecific species that geographical locations vary greatly. Therefore, genetic diversity presented in this study provides a reference for species identification of muscid flies. Nevertheless, further investigation and data from more muscid species are required to enhance the efficacy of species-level identification using COI gene as a genetic marker.
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Affiliation(s)
- Lipin Ren
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China
| | - Wei Chen
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China
| | - Yanjie Shang
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China
| | - Fanming Meng
- Department of Histology and Embryology, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China
| | - Lagabaiyila Zha
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China
| | - Yong Wang
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China
| | - Yadong Guo
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, Hunan, China
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50
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Ren L, Shang Y, Chen W, Meng F, Cai J, Zhu G, Chen L, Wang Y, Deng J, Guo Y. A brief review of forensically important flesh flies (Diptera: Sarcophagidae). Forensic Sci Res 2018; 3:16-26. [PMID: 30483648 PMCID: PMC6197121 DOI: 10.1080/20961790.2018.1432099] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Accepted: 01/21/2018] [Indexed: 02/05/2023] Open
Abstract
Forensic entomology could provide valuable data for the minimum postmortem interval (PMImin) estimation and other relevant information, such as causes and circumstances of death. Some representatives of flesh flies are one of the dominant necrophagous insects during early stages of decomposition, demonstrating unique biological characteristics compared with other necrophagous flies. Moreover, they lead to global health concerns as carriers of various pathogenic micro-organisms, and dominantly result in the traumatic myiasis. Thus, sarcophagid flies are considered important in decomposition processes for PMImin estimation. However, the utility of sarcophagid flies has been seriously hampered by limited ecological, biological and taxonomic knowledge of them. The aim of this paper is to provide a brief review on the species, distribution and biological habit of forensically important sarcophagid flies. In addition, the relation between traumatic myiasis and flesh flies, molecular identification methods and developmental pattern of flesh flies are summarized.
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Affiliation(s)
- Lipin Ren
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Yanjie Shang
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Wei Chen
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Fanming Meng
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Jifeng Cai
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Guanghui Zhu
- Department of Forensic Medicine, Shantou University Medical College, Shantou, China
| | - Lushi Chen
- Department of Forensic Medicine, Guizhou Police Officer Vocational College, Guiyang, China
| | - Yong Wang
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, China
| | - Jianqiang Deng
- Department of Forensic Medicine, Hainan Medical University, Haikou, China
| | - Yadong Guo
- Department of Forensic Science, School of Basic Medical Sciences, Central South University, Changsha, China
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