Nutrition and water deprivation negatively impacts adult longevity of lucilia eximia (diptera: calliphoridae) / Steven M. Graham ... [et al.]

Graham, Steven M. and Sawyer, Samantha J. and Crozier, Olivia and Denton, Kylie and Tomberlin, Jeffery K. (2021) Nutrition and water deprivation negatively impacts adult longevity of lucilia eximia (diptera: calliphoridae) / Steven M. Graham ... [et al.]. Journal of Clinical and Health Sciences, 6 (1). pp. 44-51. ISSN 0127-984X


Introduction: Forensic entomology is the utilization of arthropod science in legal practice. Blow flies (Diptera: Calliphoridae) are a prevalent family in medicolegal investigations due to their colonization of vertebrates, including living or deceased humans. Longevity of insects associated with legal investigations is an important life-history trait that could be useful in determining a minimum time of colonization (TOC) interval. Lucilia eximia (Wiedemann) (Diptera: Calliphoridae) is known to colonize remains and cause myiasis; however, this species is understudied. The purpose of this study was to investigate the longevity of L. eximia adults with and without resources.
Methods: Lucilia eximia adults were placed in six different mesh cages at a 1:1 sex ratio, where flies in three cages were fed and provided water, while those in the remaining cages were not. Cages were placed in a walk-in incubator set to 24°C, 60% RH, and a 14:10 L:D. Mortality was recorded daily.
Results: Males and females did not live significantly longer than each other within either treatment. Life span of adults provided resources was 58.41 ± 27.79 d, while deprived individuals lived 1.61 ± 0.49 d. Rate of mortality was nearly 6X greater for those deprived of food and water than those provided such resources.
Conclusions: Access to food and water impacted adult longevity. Forensic entomologists could potentially estimate time since adult emergence based on mortality proportion of adults present in relation to environmental conditions and access to food in an enclosed environment (e.g., building). However, such a method will need to be validated.


Item Type: Article
Email / ID Num.
Graham, Steven M.
Sawyer, Samantha J.
Crozier, Olivia
Denton, Kylie
Tomberlin, Jeffery K.
Subjects: Q Science > QL Zoology > Invertebrates > Arthropoda > Insects > Diptera (Flies)
R Medicine > RA Public aspects of medicine > Forensic Medicine. Medical jurisprudence. Legal medicine
Divisions: Universiti Teknologi MARA, Selangor > Sungai Buloh Campus > Faculty of Medicine
Journal or Publication Title: Journal of Clinical and Health Sciences
ISSN: 0127-984X
Volume: 6
Number: 1
Page Range: pp. 44-51
Keywords: nutrition ecology, longevity, resource availability, medicolegal investigations, forensic entomology
Date: June 2021
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