Behavior of the combined radial post-feeding larval dispersal of the blowflies Chrysomya megacephala and Chrysomya albiceps (Diptera, Calliphoridae) and implications for forensic entomology

Abstract

The aims of this work was to study the life stages of Chrysomya megacephala in a circular arena allowing the combined radial post-feeding dispersal from the center of the arena of C. albiceps and C. megacephala larvae. To determine the location of each pupa, the distance from the center, the depth and weight of each pupa formed were analyzed. For

Life history data on the fly parasitoids Aleochara nigra Kraatz and A. asiatica Kraatz (Coleoptera: Staphylinidae), and their potential application in forensic entomology

“…Although the post-feeding larval dispersal of H. ligurriens has not been thoroughly studied, according to our observations, their dispersal distance may also be short. In addition, the average distance of post-feeding dispersal of C. megacephala larvae was 16.02 cm in a study [29]. If these fly species show similar post-feeding dispersal ranges, rove beetle larvae which hatch around a carrion site should have similar chances of encountering suitable and unsuitable hosts.…”

Post-feeding activity of Lucilia sericata (Diptera: Calliphoridae) on common domestic indoor surfaces and its effect on development

“…As dispersal is known to begin during the night (Green, 1951), checks for post-feeding stage were made in the mornings. Gomes et al, (2007) showed that differences in burial behaviour could occur as a result of variation in larval mass and Berrigan & Pepin (1995) found larval mass to be correlated with speed and subsequent distance travelled. Therefore selected larvae were individually measured to [6] Sensitivity: Internal ensure all were the same starting mass of 0.05g (weighed individually) and measured 12mm in length (when expanded) at commencement of study.…”

“…Larvae of Lucilia sericata can be identified as post-feeding/dispersing third instars when they have left the source of food on [3] Sensitivity: Internal which they have been feeding, and the crop (which is visible through the cuticle of the larvae) begins to empty. When wandering, the larvae search for suitable sites away from light which ideally allow burial in order to avoid predation and desiccation (Gomes et al, 2007). It has also been shown that the heavier the larva, the deeper it will bury to pupariate (Gomes et al, 2007).…”

“…When wandering, the larvae search for suitable sites away from light which ideally allow burial in order to avoid predation and desiccation (Gomes et al, 2007). It has also been shown that the heavier the larva, the deeper it will bury to pupariate (Gomes et al, 2007). It is the inability to bury at a suitable pupariation site which appears to be a key factor in the distance of dispersal (Greenberg, 1990).…”

Abundância e flutuação populacional de Chrysomya albiceps (Wiedmam, 1819) (Diptera: Calliphoridae) associadas à carcaças de Sus scrofa L, 1758 na Ilha do Marajó, Pará, Brasil

“…Na região sul e sudoeste do Brasil, C. albiceps apresenta uma flutuação populacional continua ocorrendo em carcaças durante todos os mesmo do ano, com maiores indicies de abundância nos períodos mais quentes do ano (Souza & Linhares, 1997;D' Almeida & Fraga, 2007, Corrêa et al, 2010. As altas temperaturas são fatores que favorecem o desenvolvimento de ovos e lavras de C. albiceps, isso é um dos atributos que explica a sua alta abundância em relação a outros insetos necrófagos (Souza & Linhares, 1997;Gomes et al, 2007). Nossos dados indicam que esse padrão de flutuação populacional e abundância é bem definido também para a região norte do Brasil.…”