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https://www.readbyqxmd.com/read/28889865/estimating-the-age-of-the-adult-stages-of-the-blow-flies-lucilia-sericata-and-calliphora-vicina-diptera-calliphoridae-by-means-of-the-cuticular-hydrocarbon-n-pentacosane
#1
Victoria Bernhardt, Werner Pogoda, Marcel A Verhoff, Stefan W Toennes, Jens Amendt
Age estimation of insects like blow flies plays an important role in forensic entomology and can answer questions in regard to time of death. So far the focus is on the immature stages of these insects, but recently the adult fly became a target of interest. It has been established that the profile of specific cuticular hydrocarbons (CHCs) changes in a consistent pattern as adult insects age; thus, their analysis could be a promising tool for the age estimation of adult insects. We investigated the CHC n-pentacosane (nC25) on the legs of the adult blow flies Lucilia sericata and Calliphora vicina with gas chromatography-mass spectrometry...
September 2017: Science & Justice: Journal of the Forensic Science Society
https://www.readbyqxmd.com/read/28803354/facultative-myiasis-of-domestic-cats-by-sarcophaga-argyrostoma-diptera-sarcophagidae-calliphora-vicina-and-lucilia-sericata-diptera-calliphoridae-in-northern-italy
#2
Marco Pezzi, Daniel Whitmore, Teresa Bonacci, Carlo Nicola Francesco Del Zingaro, Milvia Chicca, Massimo Lanfredi, Marilena Leis
We describe five cases of myiasis of domestic cats, Felis silvestris catus L. (Carnivora: Felidae), reported in 2016 in northern Italy and caused by three Diptera species: Sarcophaga argyrostoma (Robineau-Desvoidy) (Sarcophagidae), Calliphora vicina Robineau-Desvoidy and Lucilia sericata (Meigen) (Calliphoridae). Three were cases of traumatic myiasis, one by S. argyrostoma and two by L. sericata, one was a case of auricular myiasis by C. vicina and one was a case of ophthalmomyiasis caused by an association of L...
August 12, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28762629/evaluation-of-blowfly-larvae-diptera-calliphoridae-as-possible-reservoirs-and-mechanical-vectors-of-african-swine-fever-virus
#3
J H Forth, J Amendt, S Blome, K Depner, H Kampen
In 2014, highly virulent African swine fever virus (ASFV) was introduced into the Baltic States and Poland, with new cases being reported almost every week from wild boar and also from domestic pigs. Contrary to initial predictions that the disease would either die out due to the high virulence of the virus strain or spread rapidly in westerly direction, the infection became endemic and spread slowly. The unexpected disease epidemiology led to the hypothesis that hitherto unconsidered factors might contribute to virus persistence and dispersal...
August 1, 2017: Transboundary and Emerging Diseases
https://www.readbyqxmd.com/read/28710939/evaluation-of-bait-traps-as-a-means-to-predict-initial-blow-fly-diptera-calliphoridae-communities-associated-with-decomposing-swine-remains-in-new-jersey-usa
#4
Lauren M Weidner, M Denise Gemmellaro, Jeffery K Tomberlin, George C Hamilton
Information about blow fly (Diptera: Calliphoridae) species distributions can be valuable for criminal investigations, with regards to determining movement of remains from one location to another and time of colonization estimates, making these data extremely useful. Past work has been conducted on initial species community structure across New Jersey, USA using traps baited with beef liver; however, if these same species frequent vertebrate carrion remains unclear. In order to evaluate these data, piglet carcasses were placed out once every two weeks for a year in New Brunswick, New Jersey, USA...
September 2017: Forensic Science International
https://www.readbyqxmd.com/read/28708988/early-colonisation-of-urban-indoor-carcasses-by-blow-flies-diptera-calliphoridae-an-experimental-study-from-central-spain
#5
Daniel Martín-Vega, Carla Martín Nieto, Blanca Cifrián, Arturo Baz, Luisa M Díaz-Aranda
Due to their ubiquity and synanthropy, blow flies (Diptera: Calliphoridae) are generally the first colonisers of cadavers and, therefore, frequently used to estimate a minimum post-mortem interval (minPMI). Whereas in outdoor situations blow flies are expected to locate and colonise exposed cadavers within hours or even minutes after death, it is usually assumed that the colonisation of a cadaver indoors might be delayed for an uncertain period of time. This uncertainty severely limits the informativity of minPMI estimates based on entomological evidence...
September 2017: Forensic Science International
https://www.readbyqxmd.com/read/28695964/segmentation-gene-expression-patterns-in-bactrocera-dorsalis-and-related-insects-regulation-and-shape-of-blastoderm-and-larval-cuticle
#6
Worramin Suksuwan, Xiaoli Cai, Lertluk Ngernsiri, Stefan Baumgartner
The oriental fruit fly, Bactrocera dorsalis, is regarded as a severe pest of fruit production in Asia. Despite its economic importance, only limited information regarding the molecular and developmental biology of this insect is known to date. We provide a detailed analysis of B. dorsalis embryology, as well as the expression patterns of a number of segmentation genes known to act during patterning of Drosophila and compare these to the patterns of other insect families. An anterior shift of the expression of gap genes was detected when compared to Drosophila...
2017: International Journal of Developmental Biology
https://www.readbyqxmd.com/read/28668988/blowfly-puparia-in-a-hermetic-container-survival-under-decreasing-oxygen-conditions
#7
Anna Mądra-Bielewicz, Katarzyna Frątczak-Łagiewska, Szymon Matuszewski
Despite widely accepted standards for sampling and preservation of insect evidence, unrepresentative samples or improperly preserved evidence are encountered frequently in forensic investigations. Here, we report the results of laboratory studies on the survival of Lucilia sericata and Calliphora vomitoria (Diptera: Calliphoridae) intra-puparial forms in hermetic containers, which were stimulated by a recent case. It is demonstrated that the survival of blowfly intra-puparial forms inside airtight containers is dependent on container volume, number of puparia inside, and their age...
July 1, 2017: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/28621210/effects-of-lucilia-sericata-on-wound-healing-in-streptozotocin-induced-diabetic-rats-and-analysis-of-its-secretome-at-the-proteome-level
#8
F K Tombulturk, M Kasap, M Tuncdemir, E Polat, S Sirekbasan, A Kanli, G Kanigur-Sultuybek
The use of Lucilia sericata larvae on the healing of wounds in diabetics has been reported. However, the role of the excretion/secretion (ES) products of the larvae in treatment of diabetic wounds remains unknown. This study investigated whether application of the ES products of L. sericata on the wound surface could improve the impaired wound healing in streptozotocin-induced diabetic rats. Additional analysis was performed to understand proteome content of L. sericata secretome to understand ES contribution at the molecular level...
January 1, 2017: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/28586212/species-identification-of-necrophagous-insect-eggs-based-on-amino-acid-profile-differences-revealed-by-direct-analysis-in-real-time-high-resolution-mass-spectrometry
#9
Justine E Giffen, Jennifer Y Rosati, Cameron M Longo, Rabi A Musah
The colonization of decomposing remains by necrophagous insects such as blow flies is of forensic importance because the progression through the various stages of insect development can be correlated to time of death. The ability to infer this information hinges on accurate determination of the fly species that are associated with the entomological evidence collected. This evidence can include eggs, larvae, pupae, and puparial casings. Determination of the egg's identity is particularly challenging because the eggs of multiple species are morphologically very similar...
July 3, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28567525/forensic-entomotoxicology-revisited-towards-professional-standardisation-of-study-designs
#10
REVIEW
Erica I T da Silva, Brendan Wilhelmi, Martin H Villet
Forensic entomotoxicology is the use of insects as evidence of whether a toxicant is present in an environment such as a corpse, river or landscape. The earliest overtly forensic study was published in 1977, and since then, at least 63 papers have been published, most of them focused on the detection of toxicants in insects or on effects of toxicants on diverse insect indicator taxa. A comprehensive review of the published literature revealed various inconsistencies between studies that could be addressed by introducing standard protocols for such studies...
May 31, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28512294/the-potential-use-of-cuticular-hydrocarbons-and-multivariate-analysis-to-age-empty-puparial-cases-of-calliphora-vicina-and-lucilia-sericata
#11
Hannah E Moore, Jennifer L Pechal, M Eric Benbow, Falko P Drijfhout
Cuticular hydrocarbons (CHC) have been successfully used in the field of forensic entomology for identifying and ageing forensically important blowfly species, primarily in the larval stages. However in older scenes where all other entomological evidence is no longer present, Calliphoridae puparial cases can often be all that remains and therefore being able to establish the age could give an indication of the PMI. This paper examined the CHCs present in the lipid wax layer of insects, to determine the age of the cases over a period of nine months...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28474172/age-estimation-during-the-blow-fly-intra-puparial-period-a-qualitative-and-quantitative-approach-using-micro-computed-tomography
#12
Daniel Martín-Vega, Thomas J Simonsen, Martina Wicklein, Martin J R Hall
Minimum post-mortem interval (minPMI) estimates often rely on the use of developmental data from blow flies (Diptera: Calliphoridae), which are generally the first colonisers of cadavers and, therefore, exemplar forensic indicators. Developmental data of the intra-puparial period are of particular importance, as it can account for more than half of the developmental duration of the blow fly life cycle. During this period, the insect undergoes metamorphosis inside the opaque, barrel-shaped puparium, formed by the hardening and darkening of the third instar larval cuticle, which shows virtually no external changes until adult emergence...
May 4, 2017: International Journal of Legal Medicine
https://www.readbyqxmd.com/read/28472319/evaluation-of-sterilized-artificial-diets-for-mass-rearing-the-lucilia-sericata-diptera-calliphoridae
#13
Le Zheng, Tawni L Crippen, Alan Dabney, Alex Gordy, Jeffery K Tomberlin
The impact of six sterilized diets (blood-yeast agar diet, decomposed beef liver diet, powdered beef liver diet, powdered fish diet, milk-based diet, and a chemically defined diet) on Lucilia sericata (Meigen) larvae reared at three densities (10 larvae, 20 larvae, and 40 larvae on 20 g diet) was determined in comparison to fresh beef liver as a control. Specifically, the effects of these diets on the following traits of L. sericata were measured: 1) pupal weight, 2) pupation percentage, 3) eclosion percentage, as well as 4) adult longevity...
September 1, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28454623/effects-of-different-storage-and-measuring-methods-on-larval-length-values-for-the-blow-flies-diptera-calliphoridae-lucilia-sericata-and-calliphora-vicina
#14
Valentina Bugelli, Carlo Pietro Campobasso, Marcel A Verhoff, Jens Amendt
In forensic entomology, the methods of sampling, killing, and storing entomological samples can affect larval age estimation, and, hence, the estimation of the minimum post-mortem interval. In the existing manuals, there is a certain amount of heterogeneity regarding methods and the recommendations for best practice in forensic entomology are insufficiently validated. This study evaluated three different length-measurement methods for larval stages and examined the influence of different killing and storing methods on the larval length of two forensically important blow flies, Lucilia sericata and Calliphora vicina...
May 2017: Science & Justice: Journal of the Forensic Science Society
https://www.readbyqxmd.com/read/28450516/genome-sequence-of-a-providencia-stuartii-strain-isolated-from-luciliasericata-salivary-glands
#15
Ye Yuan, Yu Zhang, Shuhua Fu, Tawni L Crippen, David K Visi, M Eric Benbow, Michael S Allen, Jeffery K Tomberlin, Sing-Hoi Sze, Aaron M Tarone
We present here the draft genome sequence of a Providencia stuartii strain, derived from the salivary glands of larval Lucilia sericata, a common blow fly important to forensic, medical, and veterinary science. The genome sequence will help dissect coinfections involving P. stuartii and Proteus mirabilis, as well as blow fly-bacteria interactions.
April 27, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28419727/endotoxin-testing-of-a-wound-debridement-device-containing-medicinal-lucilia-sericata-larvae
#16
Samantha F Pickles, David I Pritchard
Alimentary products of medicinal Lucilia sericata larvae are studied to determine their mechanisms of action, particularly in the contexts of wound debridement and disinfection. Furthermore, the larvae can be applied to patients in contained medical devices (such as the BioBag; BioMonde). Here, we tested the materials and larval content of the most commonly used debridement device (the "BB-50") to explore the possibility that endotoxins may be contributing to the bio-activity of the product, given that endotoxins are potent stimulants of cellular activation...
May 2017: Wound Repair and Regeneration
https://www.readbyqxmd.com/read/28409386/nocturnal-oviposition-behavior-of-blowflies-diptera-calliphoridae-in-the-southern-hemisphere-south-africa-and-australia-and-its-forensic-implications
#17
Kirstin A Williams, James F Wallman, Bryan D Lessard, Christopher R J Kavazos, D Nkosinathi Mazungula, Martin H Villet
Published research has offered contradictory evidence of the occurrence of nocturnal oviposition by carrion-breeding blowflies, a behavior that can affect the interpretation of forensic estimates of a minimum post mortem interval (minPMI) by up to 12 hours, depending on latitude and season. The majority of published studies are from the northern hemisphere. Field experiments were conducted in South Africa and Australia that extend observations to species of the southern hemisphere. Various vertebrate carrion was exposed at night in summer under different lunar phases and/or artificial lighting, and in woodland and pasture areas...
June 2017: Forensic Science, Medicine, and Pathology
https://www.readbyqxmd.com/read/28402593/a-new-method-for-the-production-of-sterile-colonies-of-lucilia-sericata
#18
N E Gasz, M L Harvey
Maggot debridement therapy (MDT) refers to the use of blowfly larvae to clean or debride an infected wound. Most commonly, larvae of Lucilia sericata (Meigen) (Diptera: Calliphoridae) are used, and are sterilized prior to use to ensure no further bacterial infections are introduced during treatment. Current methods sterilize eggs from laboratory-reared blowfly colonies, after which sterile early second instar maggots can be provided to hospitals for use in treatment. Maggots not required for treatment are used for colony regeneration, in which sterility is not maintained...
September 2017: Medical and Veterinary Entomology
https://www.readbyqxmd.com/read/28398264/factors-affecting-species-identifications-of-blow-fly-pupae-based-upon-chemical-profiles-and-multivariate-statistics
#19
William Kranz, Clinton Carroll, Darren A Dixon, John V Goodpaster, Christine J Picard
Alternative methods for the identification of species of blow fly pupae have been developed over the years that consist of the analyses of chemical profiles. However, the effect of biotic and abiotic factors that could influence the predictive manner for the tests have not been evaluated. The lipids of blowfly pupae (Cochliomyia macellaria, Lucilia cuprina, Lucilia sericata, and Phormia regina) were extracted in pentane, derivatized, and analyzed by total-vaporization solid phase microextraction gas chromatography-mass spectrometry (TV-SPME GC-MS)...
April 11, 2017: Insects
https://www.readbyqxmd.com/read/28374542/to-eat-or-get-heat-behavioral-trade-offs-between-thermoregulation-and-feeding-in-gregarious-necrophagous-larvae
#20
Jana Podhorna, Cindy Aubernon, Marie Borkovcova, Julien Boulay, Valery Hedouin, Damien Charabidze
The thermoregulation behavior of Lucilia sericata larvae (Diptera: Calliphoridae), a necrophagous species that feeds on vertebrate cadavers, was investigated. These larvae require high heat incomes to develop, and can elevate temperatures by forming large aggregates. We hypothesized that L. sericata larvae should continue to feed at temperatures up to 38°C, which can be reached inside larval masses. Thermal regulation behavior such as movement between a hot food spot and colder areas was also postulated. The hypotheses were tested by tracking for 1h the activity of single, starved third instar larvae in a Petri dish containing one food spot (FS) that was heated to a constant temperature of 25°C, 34°C or 38°C with an ambient temperature of 25°C...
April 4, 2017: Insect Science
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