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11 September 2024 Development of mixed linear models to analyze and describe the impact of malathion on the larval growth of Megaselia scalaris (Diptera: Phoridae) under various feeding media and environmental conditions
Luz Alejandra Castillo-Alanís, Ximena Alexa Torres-Saez de Nanclares, Carlos Salvador Pedraza-Lara, José Luis Colorado-Hernández, Alejandra Quijano-Mateos, Omar Ávalos-Hernández, María Elena Bravo-Gómez
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Abstract

Forensic entomology plays a crucial role in estimating the minimum postmortem interval through the study of insect larvae found at crime scenes. The precision of this estimation relies on various biotic and abiotic elements that simultaneously influence insect growth and development, encompassing factors such as temperature, humidity, photoperiod, diet, and the existence of xenobiotics in decomposing tissues. Despite numerous studies on the influence of these factors, including the impact of xenobiotics, there are currently no robust tools available for making corrections to this estimation considering concurrently all variables. In an attempt to propose an exploratory and descriptive statistical model to analyze the simultaneous effect and interaction of different variables on larval growth, this study aimed to compare the effect of malathion on the growth of Megaselia scalaris (Loew, 1866) (Diptera: Phoridae) raised in malathion-spiked porcine muscle, under controlled and uncontrolled temperature and humidity conditions (environmental conditions). Larvae were also reared using various growth media. A split-plot design that combined crossed and nested factors was employed; 2 linear mixed models were developed to assess the relationships between the variables. The model provides valuable insights into the complex interactions among xenobiotics, growth media, and environmental conditions in the size and development of M. scalaris.

Luz Alejandra Castillo-Alanís, Ximena Alexa Torres-Saez de Nanclares, Carlos Salvador Pedraza-Lara, José Luis Colorado-Hernández, Alejandra Quijano-Mateos, Omar Ávalos-Hernández, and María Elena Bravo-Gómez "Development of mixed linear models to analyze and describe the impact of malathion on the larval growth of Megaselia scalaris (Diptera: Phoridae) under various feeding media and environmental conditions," Journal of Medical Entomology 61(6), 1373-1381, (11 September 2024). https://doi.org/10.1093/jme/tjae102
Received: 7 February 2024; Accepted: 17 August 2024; Published: 11 September 2024
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KEYWORDS
entomotoxicology
linear mixed model
malathion
Megaselia scalaris
minimum postmortem interval (minPMI)
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