Bionomics of two forensically important blowfly species Chrysomya megacephala and Chrysomya putoria (Diptera: Calliphoridae) reared on four types of diet

Rabêlo, K C N; Thyssen, Patrícia Jacqueline; Salgado, Roberta L.; Araújo, Manuela S.C.; Vasconcelos, Simão Dias

doi:10.1016/j.forsciint.2011.03.022

Cited by 35 publications

(17 citation statements)

References 22 publications

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“…Data obtained in laboratory regarding parameters related to larval weight and developmental time [44], corroborated seven days PMI that had been calculated by the forensic doctor through observation of the livor and rigor mortis. Insect behavior provided evidences that death could not have been natural, and PMI based on post mortem events with entomological data concordance led investigators to dig deeper.…”

Section: Cases Reportsupporting

confidence: 65%

“…Crime scene temperature, measured using a digital thermometer, was of 23 o C. Third instar larvae were collected, and adults emerged after 14 days, being identi ied as C. albiceps (N=10). Literature data [44,46] indicate that under conditions above, this species completes its development in 18 days. Based on these studies, a PMI of four days was obtained.…”

Section: Case Iii: Murder or Natural Death?mentioning

confidence: 99%

“…Larvae obtained from corpse 2 ( Figures 2B,2D) were identi ied as being of two different blow lies species: Chrysomya megacephala [49] with 66.7 mg mean weight, and C. albiceps with 29.8 mg mean weight. Calculation of PMI was done taking into account larval weight, environment temperature data and laboratorial data on developmental rate studies of the species of forensic importance [44,[49][50][51]. Age, in hours, estimated to each species was 95 to C. putoria, 94 to C. megacephala and 77 to C. albiceps.…”

Section: Case Iv: Suspects Association To the Crimementioning

confidence: 99%

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Implications of entomological evidence during the investigation of five cases of violent death in Southern Brazil

J¹

2018

J Forensic Sci Res

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In homicide cases, knowledge about time of death is important as it directs police investigation towards the discovery of authorship, including or excluding suspects of a crime, and determining nature of death. In Brazil, entomological evidence is still neglected by offi cial forensic organizations and for this reason cases using insects to estimate post-mortem interval (PMI) are still rare. Dipteran specimens collected and analyzed by the staff of Criminalistics Institute (CI) from São Paulo State, Brazil, made it possible to elucidate circumstances of the death, including suspects to the crime scene, in fi ve occurrences involving discovery of cadavers. In all cases, blowfl ies were collected and were identifi ed as belonging to species Chrysomya albiceps (Wiedemann, 1819), Chrysomya megacephala (Fabricius, 1794), Chrysomya putoria (Wiedemann, 1830), Hemilucilia semidiaphana Rondani, 1850 and Lucilia eximia (Wiedemann, 1819) (Diptera: Calliphoridae), while only in one case Sarcophagidae (Diptera) fl ies were also collected. PMI estimate was calculated taking into account laboratorial developmental rate data of mentioned species on the environmental temperature on which bodies and insects were exposed, along with comparisons to fi eld research previously conducted in those areas. Based on larval age and behavior, the course of the investigation had changed, pointing to the crime author (case I), as well as the nature of the crime (cases I-III) and associated suspects to the criminal act (cases IV-V). Results show how promising is the use of entomological evidence during investigations of violent deaths.

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Section: Cases Reportsupporting

confidence: 65%

Section: Case Iii: Murder or Natural Death?mentioning

confidence: 99%

Section: Case Iv: Suspects Association To the Crimementioning

confidence: 99%

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Implications of entomological evidence during the investigation of five cases of violent death in Southern Brazil

J¹

2018

J Forensic Sci Res

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“…Por isso, ainda são empregadas quase exclusivamente dietas a base de carne moída e sangue (SILVA et al, 2008;RABÊLO et al, 2011), as quais são desprovidas de uniformidade de qualidade e apresentam baixa durabilidade. Neste trabalho, foram realizados dois bioensaios com quatro dietas alternativas feitas a partir de produtos de origem brasileira para se avaliar a sua viabilidade e efi ciência para a produção laboratorial de larvas da mosca da bicheira no Brasil.…”

Section: Introductionunclassified

Dietas larvais alternativas para criação massal da mosca da bicheira, Cochliomyia hominivorax

2014

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“…In some cases, artificial diets were also recommended ( Mandeville 1988 , Daniels et al. 1991 , Rabelo et al. 2011 ).…”

mentioning

confidence: 99%

The Effect of Dietary Fat Levels on the Size and Development of Chrysomya megacephala (Diptera: Calliphoridae)

Yang

et al. 2014

Journal of Insect Science

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Variation in the type of tissue that larvae feed on can produce marked differences in developmental rate and body size, which can compromise predictions of minimum postmortem interval. A series of experiments were conducted to investigate the effect of fat content in the diet on larval growth in Chrysomya megacephala (Fabricius) (Diptera: Calliphoridae), an important forensic blowfly species in China. Bionomical parameters such as body size, development time, mortality, and sex ratio were observed. The results indicated that fat content in the diet has a dramatic effect on the body size and larval development. More dietary fat content was beneficial for development of larvae in first and early second instar. But it was adverse in the later third instar. Significantly, a high-fat diet resulted in increased development rates and the production of undersized larvae and adults. Overall mortality of larvae and pupa was higher when more fat was added to the diet, but sex ratio of adults was not negatively affected. This study highlights that the fat content in the diet should be considered in the entomological research and forensic application when estimating minimum postmortem interval on the basis of larval body size and developmental stage.

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Bionomics of two forensically important blowfly species Chrysomya megacephala and Chrysomya putoria (Diptera: Calliphoridae) reared on four types of diet

Cited by 35 publications

References 22 publications

Implications of entomological evidence during the investigation of five cases of violent death in Southern Brazil

Implications of entomological evidence during the investigation of five cases of violent death in Southern Brazil

Dietas larvais alternativas para criação massal da mosca da bicheira, Cochliomyia hominivorax

The Effect of Dietary Fat Levels on the Size and Development of Chrysomya megacephala (Diptera: Calliphoridae)

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