Effects of Terbufos (Organophosphate) on Larval Behaviour of Two Forensically Important Diptera Species: Contributions for Entomotoxicology.

Autor: Jales JT; Laboratory of Insect and Vectors, Department of Microbiology and Parasitology, Biosciences Center, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil. jessica_jales@hotmail.com., Barbosa TM; Laboratory of Insect and Vectors, Department of Microbiology and Parasitology, Biosciences Center, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil., Moreira VRF; Robotics and Machine Learning Team, Department of Mechanical Engineering, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil., Vasconcelos SD; Laboratory of Insects of Forensic Importance, Department of Zoology, Federal University of Pernambuco, Recife, PE, Brazil., de Paula Soares Rachetti V; Department of Biophysics and Pharmacology, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil., Gama RA; Laboratory of Insect and Vectors, Department of Microbiology and Parasitology, Biosciences Center, Federal University of Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil.
Jazyk: angličtina
Zdroj: Neotropical entomology [Neotrop Entomol] 2023 Dec; Vol. 52 (6), pp. 1155-1164. Date of Electronic Publication: 2023 Oct 20.
DOI: 10.1007/s13744-023-01094-6
Abstrakt: Neurotoxicant compounds interfere with the behaviour and biology of insects, significantly altering their locomotion patterns. However, little is known about the effect of organophosphates, neurotoxicants for agricultural, domestic and industrial use, on the larval movement of necrophagous flies, although being responsible for frequent cases of poisoning and accidental or intentional deaths. Thus, we aimed to study the influence of Terbufos (organophosphate) on the activity and mobility patterns of Lucilia eximia (Wiedemann 1819) (Calliphoridae) and Peckia (Peckia) chrysostoma (Wiedemann 1830) (Sarcophagidae) immatures collected from rat carcasses intoxicated with 5, 10 or 20 mg/kg of Terbufos, to evaluate (i) peristaltic movements and body contractions, and (ii) distance and shape of the trajectory travelled by the larva. Behavioural parameters were analysed in loco and through videos. We observed that the presence of Terbufos altered poisoned larvae's activity and body mobility in both taxon and dose-dependent manner. Lucilia eximia larvae were more active, with greater frequency of body movements and lateral contractions when intoxicated with high and intermediate doses of Terbufos. On the other hand, P. (P.) chrysostoma immatures were less active, with fewer body and lateral contractions when intoxicated with the high dose of the compound. This work experimentally demonstrates that the presence of Terbufos can alters the mobility and movement of intoxicated necrophagous Diptera, essential components of the cadaveric fauna.
(© 2023. Sociedade Entomológica do Brasil.)
Databáze: MEDLINE
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