Most flies of forensic importance are in two superfamilies, the Muscoidea and Oestroidea, with similar life stages including puparium. Upon completion metamorphosis adult fly emerges from puparium, leaving behind an exuvia that is potential significance investigation. The empty puparium a durable piece entomological evidence lasting several years. Through study chemical compounds, specifically hydrocarbons these puparia, it possible to identify species, addition how long they have been...

Necrophagous insects such as blow flies (Diptera: Calliphoridae) are considered crucial in forensic entomology. Identification at species level and determination of larval stage the basis for estimation postmortem interval (PMI). Insect evidence can also be used crime scenes, since body displacement is common. The aim this study was to determine chemotaxonomic profile intraspecific variability forensically important fly Chrysomya megacephala (F. 1794). Adults were collected municipalities...

Social wasps are important elements of the fauna in a variety environments, including human-modified environments. Evidence indicates that habitat quality affects growth colonies social urban This study investigated whether colony productivity wasp Mischocyttarus consimilis Zikán (Hymenoptera, Vespidae) is affected by loss human-occupied environment. Nests M. were collected forest and environment between January 2010 June 2011. Only nests reached decline stage sampled. As parameters, we...

The chemical signature of social insects is very important for communication, and specific signs each colony its individuals are acquired throughout their development.This can also be related to the composition materials employed during nest construction.Furthermore, venom contains chemicals required maintenance wasp colonies.Therefore, objective this study was evaluate Protopolybia exigua along different development stages, including substrate adult worker at ages.To achieve this, gas...

One of the most important contributions forensic entomology is to assist criminal expertise determine postmortem interval, which depends on duration immature stages insects interest. On other hand, time development different varies according species; therefore, its identification essential. Currently, few studies have investigated use cuticular hydrocarbons, and none regarding fatty acids, as complementary taxonomic tools expedite species identification. Therefore, we evaluated whether...

The foraging activity in social wasps is complex behavior that involves the ability to locate and transport resources necessary for colony. opportunistic generalist, sometimes adapting availability of when colonies are exposed critical environmental conditions. aim this study was evaluate two species genus Polybia capture storage prey form flights winged. Five occidentalis (Olivier) paulista (L.) were collected. Six them contained stored winged termites, one ants. results indicated these...

Both the hydrocarbons present in cuticle of social wasps, as material nest have compounds that are responsible for mediating interactions between individuals within their colonies.It is known each developmental stage from egg to adult has its own cuticular chemical composition.However, no studies regarding this subject was performed with wasps genus Mischocyttarus, thus, aim study evaluate variation composition all stages and wasp Mischocyttarus consimilis by GC-MS.As a result, 109 were...

Entomofauna associated with decaying cadavers may be useful in criminal investigation, either through the development of immature insects interest or entomological succession corpses. These factors vary if are exposed to toxic substances that can modify insect's developmental cycle, as well its own occurrence, which would imply significant changes results any investigation. However, there few studies on how contamination by compounds affect action carcasses and their consequence for forensic...

Juvenile Hormone (JH) is considered the main determinant of caste in social insects, though little known about how this hormone acts wasps, especially independent-founding species. The relationship between JH titer and colony we suggest a among effects cuticular chemical profile. Therefore, study aimed to test hypothesis that topical application larvae different instars alters composition newly emerged females Mischocyttarus consimilis (Zikán), influencing dynamics colony. Two techniques...

As moscas constituem uma classe importante de insetos para a entomologia forense. Eles são os primeiros colonizar o corpo e mais representativos durante decomposição. Esses usados principalmente estimativa do intervalo post-mortem (PMI), bem como um indicador morte violenta ou natural. Assim, este estudo relata, pela primeira vez, uso dados entomológicos ferramenta complementar auxiliar na elucidação investigação criminal realizada no Estado Mato Grosso Sul, região centro-oeste Brasil. Neste...

Intracolonial recognition among social insects is performed mainly by means of cuticular hydrocarbons (CHCs) that provide chemical communication, although their primary function the avoidance desiccation. Therefore, ability to adjust climatic variation may be related composition CHCs. The hypothesis adopted in this work was workers ant Odontomachus brunneus, when exposed higher or lower average temperatures, change CHCs composition, as a readjustment new conditions, and this, turn, leads...

In the Attina subtribe division of labor among workers is based on different tasks performed by morphological subcastes. Considering that cuticular chemical compounds play important roles as protection against water loss and mediates interactions between nestmates, studies profile ants genus Atta are still scarce, aim this study was to evaluate relationship phenotypes in subcastes laevigata (Smith, 1858) workers. The composition assessed Gas Chromatography coupled Mass Spectrometry...

As a result of environmental change by anthropic action, animal species that inhabit these areas may suffer the effects it on their phenotypes as consequence adapting to conditions. In case social wasps, cuticular chemical compounds be influenced, since vary depending genetic and factors. However, few studies have investigated synanthropic over surface wasps. Therefore, aim this study was investigate how according different degrees human activity test hypothesis wasps are affected level in...

Cuticular hydrocarbons are found in the epicuticle of insects and act during interactions between nestmates social insects. Among classes these compounds, branched alkanes stand out acting as flags intracolonial interactions, therefore, varying significantly intraspecificaly. However, there is evidence that linear can also signals therefore would be important to assess intraspecific differences colonies Thus, hypothesis this study used a tool establish relationships species wasp. Linear all...

Although cuticular hydrocarbons and venom are important to the evolutionary success of social behavior, studies that investigated these compounds in tropical wasps rare. Thus, aim this study was compare chemical composition nonpolar portion Apoica pallens, a swarm-founding wasp Polistes versicolor an independent-founding wasp. Gas chromatography coupled mass spectrometry (GC/MS) technique used. In samples A. 66 were identified on cuticle 87 venom, 13 unique 26 venom. P. versicolor, 85 60 10...

Cuticular hydrocarbons (CHCs) of most terrestrial arthropods primarily serve as a protective barrier against desiccation and infection. Throughout evolution, these compounds have acquired another fundamental function: the exchange signals during interactions between nestmates. However, even though cuticular perform dual function in social insects, little is known about effect(s) one on other no study has evaluated this relationship wasps. Therefore, present tests hypothesis that level...