Entomotoxicology: Drugs, Toxins, and Insects

Byrd, Jason; Peace, Michelle R.

doi:10.1002/9781118062241.ch14

Cited by 8 publications

(5 citation statements)

References 52 publications

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“…Two of these accidental cases were located indoors and one was located outdoors and all three were moderately decomposed ( Table 1 ). Cocaine is known to have effects on the larval development and size of some fly species [ 27 ] and other drugs with similar properties also have effects on development and size [ 28 ], but the effects on fly attraction and colonization are unknown.…”

Section: Resultsmentioning

confidence: 99%

Comparing Species Composition of Passive Trapping of Adult Flies with Larval Collections from the Body during Scene-Based Medicolegal Death Investigations

Sanford

2017

Insects

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Collection of insects at the scene is one of the most important aspects of forensic entomology and proper collection is one of the biggest challenges for any investigator. Adult flies are highly mobile and ubiquitous at scenes, yet their link to the body and the time of colonization (TOC) and post-mortem interval (PMI) estimates is not well established. Collection of adults is widely recommended for casework but has yet to be rigorously evaluated during medicolegal death investigations for its value to the investigation. In this study, sticky card traps and immature collections were compared for 22 cases investigated by the Harris County Institute of Forensic Sciences, Houston, TX, USA. Cases included all manner of death classifications and a range of decomposition stages from indoor and outdoor scenes. Overall, the two methods successfully collected at least one species in common only 65% of the time, with at least one species unique to one of the methods 95% of the time. These results suggest that rearing of immature specimens collected from the body should be emphasized during training to ensure specimens directly associated with the colonization of the body can be identified using adult stages if necessary.

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Section: Resultsmentioning

confidence: 99%

Comparing Species Composition of Passive Trapping of Adult Flies with Larval Collections from the Body during Scene-Based Medicolegal Death Investigations

Sanford

2017

Insects

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“…A entomotoxicologia é uma área que surgiu da união da entomologia com a toxicologia e as ciências forenses (Byrd, Peace, 2012). Devido à facilidade em se colher os insetos no cadáver, sua disponibilidade por um período de tempo maior em relação aos tecidos humanos e devido a menor quantidade de substâncias interferentes, observa-se que existem menores interferências durante as análises, tornando-se possível a execução de uma análise toxicológica que auxiliará na investigação das circunstancias que envolveram o óbito (Parkhideh et al 2024).…”

Section: Introductionunclassified

Efeito da benzocaína e carbamato aldicarb em parâmetros populacionais de Dermestes maculatus DeGeer 1774 (Coleoptera, Dermestidae)

Savordelli,

Souza,

Pelli

et al. 2024

Cad. Pedagógico

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A entomotoxicologia é a união da entomologia com a toxicologia e as ciências forenses. Esta área avalia o efeito biológico de xenobióticos sobre o desenvolvimento de insetos necrófagos. O objetivo deste estudo foi avaliar a interferência da Benzocaína e do Carbamato Aldicarb nos parâmetros populacionais de Dermestes maculatus DeGeer, 1774. A partir de uma criação de manutenção de D. maculatus, em sala com fotoperíodo natural e sem controle de temperatura, coletou-se aleatoriamente 24 insetos adultos dos quais, 8 foram colocados em recipiente de vidro contendo Rattus norvegicus (Berkenhout, 1769) eutanasiado com benzocaína, 8 em recipiente de vidro contendo Rattus norvegicus envenenado com Carbamato Aldicarb e, 8 adultos em recipiente um rato eutanasiado por deslocamento cervical, para ser utilizado como controle. Após completa esqueletização dos vertebrados, os insetos foram coletados e submetidos à hipotermia em freezer à -20° C. Posteriormente, foram separados em frascos contendo álcool 70%. As larvas foram posteriormente medidas em estereomicroscópio BEL PHOTONICS® acoplado a ocular micrométrica. Foram realizadas as medidas: comprimento total; comprimento da cápsula cefálica, largura da cápsula cefálica e largura do mesotórax. A análise quantitativa das variações morfométricas relacionada à dinâmica populacional pode explicar como fatores ambientais estão diretamente relacionados às alterações fenotípicas. Quando comparados instares entre as dietas contendo drogas com a dieta controle, verifica-se que nem todos os instares possuem variações biométricas entre si. Uma hipótese para explicar a não diferença no desenvolvimento entre o grupo tratado com Carbamato Aldicarb e o controle é o fato das larvas de D. maculatus não terem metabolizado essa droga. Por outro lado, a diferença apresentada no grupo tratado com benzocaína pode ser um indicativo do efeito biológico deste princípio ativo no metabolismo de Dermestes maculatus, influenciando na biometria e parâmetros populacionais, com um aumento significativo no número de ínstares. Para determinar a colonização de Dermestes maculatus por diferentes substratos, o uso de medidas morfométricas não se mostra, até o momento, viável. Inviabilizando, por exemplo o uso desse grupo em algumas áreas, como o cálculo do Intervallum post mortem, ou tempo decorrido após a morte de uma pessoa.

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“…10 This can make estimation of PMI wrong if effects of drugs are not considered. 11 Furthermore, another factor can accelerate and/ or decelerate the development of insects such as environmental factors (i.e temperature and humidity), food quality and quantity. 8,12 High temperatures and low humidity can increase the development of larvae and pupae if there are sufficient food supplies, as well as the opposite.…”

Section: Introductionmentioning

confidence: 99%

Effects of various lethal doses of amitriptyline to the length of Calliphoridae larvae

Alifia

Syamsun

Wardoyo

2020

JKKI

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Background: Uses of insects to predict Post-mortem Interval (PMI) is important for non-natural causes of death such as drug abuses. Doses of drugs in a corpse are presumed to affect rates of growth and development of insects and relationships to predict the PMI. Objective: This study aims to study effects of various doses of lethal amitriptyline to the length of Calliphoridae larvae stage as the first organism seen on a corpse as well as to assess other factors involved in insect growth such temperatures and humidity. Methods: This study was an experimental research using 24 dead rats as larva's growth media. These rats were divided into four group: the control group, the first treatment (T1) group, the second treatment (T2) group, and the third treatment (T3) group. The control group was deceased by cervical dislocation representing natural cause of death, while the treatment groups were given various doses of amitriptyline orally. The doses given to T1, T2, and T3 groups were 75 mg, 100 mg and 125 mg, respectively. Next, the rat corpses were put into cages containing Calliphoridae larvae; daily observation was conducted every morning and afternoon until the larvae transformed into pupae. All obtained data were analysed by using a multivariate linear regression analysis, Spearman correlation and Kruskal-Wallis. Results: This study showed that the more doses of amitriptyline, the longer larva cycle and the shorter length of larvae (p<0,05). The life cycle time in the control, T1, T2, and T3 groups were four, five, eight and nine days, respectively. Based on the first day of larva appearance in each group, the control group produced an average length of larvae longer than the T1, T2, and T3 groups, respectively 8.33 mm, 7.33 mm, 4.5 mm and 5.67 mm. However, differences of temperatures and humidity observed in the routine morning and afternoon did not have any differences. Conclusion:Increasing more doses of amitriptyline extended the larva cycle that could cause the larva length to be shorter in the treatment group compared to the control group on the same day. Environmental factors in this study had smaller effects on the larva length growth of the Calliphoridae larvae. Latar Belakang: Penggunaan serangga dalam menentukan Postmortem interval (PMI) merupakan hal yang penting terutama bagi kematian tidak wajar seperti overdosis obat-obatan. Dosis obat dalam jasad diperkirakan berpengaruh terhadap pertumbuhan dan perkembangan serangga yang selanjutnya

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Entomotoxicology: Drugs, Toxins, and Insects

Cited by 8 publications

References 52 publications

Comparing Species Composition of Passive Trapping of Adult Flies with Larval Collections from the Body during Scene-Based Medicolegal Death Investigations

Comparing Species Composition of Passive Trapping of Adult Flies with Larval Collections from the Body during Scene-Based Medicolegal Death Investigations

Efeito da benzocaína e carbamato aldicarb em parâmetros populacionais de Dermestes maculatus DeGeer 1774 (Coleoptera, Dermestidae)

Effects of various lethal doses of amitriptyline to the length of Calliphoridae larvae

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