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May 1998 - present
Publications
Publications (91)
Antimicrobial-resistant bacteria were isolated from muscoid dipterans collected at five different areas of Rio de Janeiro city, in proximity to hospitals. Extracts obtained by maceration of flies were diluted and used as inocula for different culture media, with or without antibiotic (ceftriaxone 1mg/L) supplementation. Purified isolates were submi...
Essential oils have been considered as an important alternative facing synthetic pesticides. The control of the species Musca domestica is very important for public health due to their role as vector associated with Vibrio cholerae, Salmonella and Shigella, among other pathogens. The objective of this work was to evaluate the larvicidal and insecti...
Capybaras (Hydrochoerus hydrochaeris) are the largest rodents in the world. These animals live in groups and inhabit areas close to rivers, wetlands and lagoons and can live near areas inhabited by humans and domestic animals. Capybaras play an important role in the transmission of etiological agents of zoonoses, such as diseases caused by Cryptosp...
Although the presence of protozoa in drinking water is a major public health problem in many countries, knowledge about the risks of these organisms in the anthropogenic environment in Paraguay is still scarce. Giardia spp. and Cryptosporidium spp. are pathogenic protozoa with faecal-oral hydric transmission that cause gastrointestinal disorders wh...
Introduction:
Musca domestica is resistant to many insecticides; hence, biological control is a suitable alternative.
Methods:
We evaluated the lethality of strain Btk176 towards the larval and adult M. domestica and the histopathological effects in the larvae midgut.
Results:
We observed 99% larval and 78.9% adult mortality within 48 hours of...
The use of synthetic chemical insecticides for the control of insects is dangerous, affecting man and animals, contaminating the air, water, soil and the food chain, causing serious effects on health and promoting the development of resistance in several species of pests
and vectors. All these problems increase the interest in the
development of a...
Brevibacillus laterosporus was tested for entomopathogenic activity towards larvae and adults of Chrysomya putoria (Diptera: Calliphoridae) under laboratory conditions. Sublethal effects related to feeding activity or development were observed, including reduction in larval weight gain, probably by inhibition of feeding, and variation in the durati...
Water mites are common and widespread parasites of some aquatic insects in freshwater habitats. This is the first record of acari Arrenurus Dugès, 1834, as a parasite of Odonata in Brazil. Water mites were sampled from Miathyria marcella (Selys, 1857) and Ischnura fluviatilis (Selys, 1876).
Context: The blowfly Chrysomya putoria is widely distributed throughout the Neotropical region and, besides transmitting pathogens; they could cause secondary myiasis. Botanical insecticides provide an alternative to synthetic pesticides because the excessive use of synthetic insecticides resulted in a progressive resistance of the pests to these c...
Context: The synthetic insecticides used to control Diptera are harmful to the environment and humans. Extracts and compounds from plants are a more sustainable source for the development of bio-insecticides.
Aims: To evaluate the efficacy of a hydroalcoholic extract of Persea americana Mill seeds as an alternative control of the species Musca dom...
Species of the genus Alpinia are widely used by the population and have many described biological activities, including activity against insects. In this paper, we describe the bioactivity of the essential oil of two species of Alpinia genus, A. zerumbet and A. vittata , against Rhodnius nasutus , a vector of Chagas disease. The essential oils of t...
Ocimum sanctum L. var. cubensis (OS) is a valuable medicinal plant. Some varieties have been reported and some of them remain almost unstudied. The aim of this study is therefore to evaluate the chemical composition and the in vitro/in vivo toxicity of the leaves essential oil from O. sanctum, up growing wild in the Eastern region of Cuba. The esse...
Cuticular hydrocarbons (CHs) contain complex mixtures of components that cover the surface of all insects to restrict water loss, and in many species function in chemical communication. The complex mixtures have been used as a chemotaxonomic tool since the 1970s. The majority of CH components can be identified by gas chromatography-mass spectrometr...
The biocidal activity of three strains of Brevibacillus laterosporus upon the post-embryonic developmental stages of Chrysomya megacephala was evaluated. Bioassays were performed to verify lethal and sub-lethal effects including ultra-structural changes in the midgut. Among the strains assayed, Shi3 presented the highest larval mortality rates, ach...
Foi avaliada a ocorrência de soro-grupos do gênero Salmonella em 150 amostras de carne bovina moída comercializada em açougues da cidade do Rio de Janeiro e adjacências. Após as coletas, as amostras de carne foram mantidas sob-refrigeração até serem feitas as semeaduras em Tetrationate Broth. Posteriormente foram repicadas em Eosin-Methilen-Blue Ag...
Os autores apresentam os resultados preliminares da incidência de escabiose entre índios da etnia Terena, pertencentes à aldeia Moreira, município de Miranda, Mato Grosso do Sul. A pesquisa foi realizada no mês de janeiro de 2005 entre 259 índios que compareceram ao posto de saúde da aldeia para atendimento médico e paramédico, realizado pela equip...
Os autores apresentam os resultados preliminares da incidência de escabiose entre índios da etnia Terena, pertencentes à aldeia Moreira, município de Miranda, Mato Grosso do Sul. A pesquisa foi realizada no mês de janeiro de 2005 entre 259 índios que compareceram ao posto de saúde da aldeia para atendimento médico e paramédico, realizado pela equip...
Foi avaliada a ocorrência de soro-grupos do gênero Salmonella em 150 amostras de carne bovina moída comercializada em açougues da cidade do Rio de Janeiro e adjacências. Após as coletas, as amostras de carne foram mantidas sob-refrigeração até serem feitas as semeaduras em Tetrationate Broth. Posteriormente foram repicadas em Eosin-Methilen-Blue Ag...
The application of a spore suspension of Brevibacillus laterosporus (Laubach) (strain Bon707), at a concentration of 1,94x109 CFU/mL in the diet, induced a level of 70% mortality in larvae of Musca domestica. No sublethal effects, upon feeding activity or development were recorded. However, electron microscopic examination of the digestive tract of...
The postmortem interval is related to the age of immature species of flies found on corpses and can be estimated using data available in the literature on the biology of the species. The flesh fly Ravinia belforti is a carrier of enteric pathogens that can affect human and animal health as well as being of forensic importance. As the morphology of...
Paper accepted by Forensic Science International on November 2015.
HIGHLIGHTS
• Major compounds were the same for one to five days old adults of Chrysomya putoria.
• Cluster analysis of major compounds separates clearly the ages of adults.
• Some cuticular hydrocarbons (CHCs) were age exclusive for both sexes.
• CHC profiles are an interesting too...
The common use of
Pouteria mammosa
(L.) Cronquist, “Mamey or Zapote,” in food and ethnobotanic medicine shows its low or absent toxicity as fruit extracts prepared from seeds. However, it is essential to conduct security trials to scientifically support their use in drug therapy. This study evaluated the aqueous and hydroalcoholic extract (25%) Acu...
The necrophagous and saprophagous flesh fly Peckia (Sarcodexia) lambens and other flesh flies are similar to one another in general external morphology. Owing to these similarities, larvae are often misidentified, which cause errors in forensic analysis. Here, to resolve these potential problems, we describe immature stages of Peckia (Sarcodexia) l...
This study aims to elucidate the bionomy of Peckia (Sarcodexia) lambens and Oxysarcodexia amorosa to provide data for medical, veterinary and forensic entomology analyses. We analyzed larval stage duration (L1–L3), weight of the mature larvae (L3), pupal stage duration, L1–adult duration, adult emergence and viability of larvae and adults of both s...
Postmortem injuries are a source of misinterpretations in forensic analysis and therefore are subject matter of taphonomic interest. Many types of injuries can cause different artifacts, which deserve attention of the forensic pathologists when evaluating corpses, either at the crime scene or during an autopsy. Insects can be important biotaphonomi...
The blowfly Lucilia cuprina is an economically important livestock pest that is also associated with human myiasis. To date, methods including the application of chemical pesticides, plant extracts, insect growth regulators and a range of Bacillus thuringiensis strains have been used, with varying degrees of success, to control this pest. The prese...
Essential oil of Cymbopogon citratus collected from Brazil and Cuba was tested to a chemical characterization and then was tested on the post-embryonic development of Musca domestica. The chemical composition analysis by GC-MS of the oils from Brazil/Cuba allowed the identification of 13 and 12 major constituents respectively; nine of them common t...
Insects are important in the decomposition of cadavers. In the field of forensic entomology, the taxo-nomic identification is essential to proceed to any procedure. The use of these insects in medico criminal investigation is the object of forensic entomological studies; the flies are generally attracted to cadav-ers and one of the most important c...
Postmortem injuries are a source of misinterpretations in forensic analysis and therefore are subject matter of taphonomic interest. Many types of injuries can cause different artifacts, which deserve attention of the forensic pathologists when evaluating corpses, either at the crime scene or during an autopsy. Insects can be important biotaphonomi...
Insects are important in the decomposition of cadavers. In the field of forensic entomology, the taxonomic identification is essential to proceed to any procedure. The use of these insects in medico criminal investigation is the object of forensic entomological studies; the flies are generally attracted to cadavers and one of the most important con...
Bioactivity of the latex from Parahancornia amapa (Apocynaceae) on the development of Rhodnius nasutus (Hemiptera, Reduviidae, Triatominae) under laboratory conditions. The aim of this study was to verify the effects of the methanolic fraction of the latex from Parahancornia amapa (Apocynaceae) (PALAM) on individuals of the species Rhodnius nasutus...
Introduction: excessive use of chemical insecticides for pest control has become a dangerous practice, for these products may affect both human beings and animals. This is the reason why the development of biopesticides has gained great importance. Plumbago scandens L. (malacara) is a medicinal plant producing large amounts of plumbagin, a compound...
Chrysomya albiceps specimens were obtained from colonies established with larvae and adults collected at the Federal Rural University in Rio de Janeiro, Seropédica, State of Rio de Janeiro. The larval stage of C. albiceps was allowed to develop in climatic chambers at temperatures of 18, 22, 27 and 32ºC, and the pupal stage was allowed to develop a...
Cochliomyia macellaria (Diptera: Calliphoridae) is known as the secondary screwworm because it causes secondary or facultative myiasis when the larvae feed on necrotic tissues. This fly has a significant medical and veterinary importance since it has been reported to transport eggs of Dermatobia hominis (human botfly), which can cause significant e...
Chemical insecticides have been the main way to control synanthropic flies of medical and veterinary importance; however, residuals of these products have become a factor impacting on the environment, as well as the potential toxicological that they may cause damage to humans and domestic animals. Phytochemical screening carried out with the aqueou...
The blowfly Lucilia cuprina is distributed worldwide and is a mechanical vector of pathogens. It can cause myiasis in humans and is strongly related to forensic entomology, as it is frequently found on human and animal corpses. However, most of the L. cuprina found on corpses are the immature stages of this fly. Correct identification is very impor...
The blowfly Lucilia cuprina is distributed worldwide and is a mechanical vector of pathogens. It can cause myiasis in humans and is strongly related to forensic entomology, as it is frequently found on human and animal corpses. However, most of the L. cuprina found on corpses are the immature stages of this fly. Correct identification is very impor...
The external surface of all insects is covered by a species-specific complex mixture of highly stable, very long chain cuticular hydrocarbons (CHCs). Gas chromatography coupled to mass spectrometry was used to identify CHCs from four species of Sarcophagidae, Peckia (Peckia) chrysostoma, Peckia (Pattonella) intermutans, Sarcophaga (Liopygia) rufico...
The selection of the extraction conditions by hydrodistillation (cohobation) of Pinuscaribaea Morelet var. caribaea (dry drug) foliage was the focus of this study. Particle size(Mesh light 1,25; 0,6; 0,25; 0,18 mm); drug-water relation (proportion 1:7, 1:12, 1:6 g/mL) andextraction time (30, 60, 90, 120, 150, 180, 210, 240, 270, 300, 330 y 360 min)...
This work describes a severe case of myiasis by Cochliomyia hominivorax (Coquerel) in a 59-year-old patient living in an urban area of São Gonçalo, Rio de Janeiro. The patient had an open wound on the right shoulder parasitized by 287 larvae. In order to remove the larvae, the wound was washed with NaCl and solid vaseline was applied onto the wound...
Chrysomya megacephala is a forensic important fly, and its immature forms also cause myiasis. The adults are the first insects to reach a carcass and can oviposit just a few hours after arrival. Therefore, the knowledge of immature stages of flies is essential for correct identification of the species found on corpses. Scanning electron microscopy...
The purpose of this study was to verify the influence of different photoperiods on larval body weight, post-embryonic development, and viability of Chrysomya albiceps. The bioassays were performed in acclimatized chamber at 27 ± 1 °C and 60 ± 10 % relative humidity regulated by three different light and dark cycles for a period of 24 h-12:12, 24:00...
Forensic entomology is an area of science that serves as a tool in crime scene investigations. Usually, flies are the first insects to reach a carcass and can oviposit just a few hours after arrival. Therefore, the knowledge of immature stages is essential for correct identification of the species found on corpses. Scanning electron microscopy (SEM...
Myiasis is the infestation of living vertebrates by fly larvae that feed for at least part of their development on the host's dead or living tissues, body substances, or ingested food. The occurrences of traumatic myiasis in humans and animals in urban and rural environments represent serious economic and public health concerns. This study reports...
The aim of this study was to evaluate the effect of the latex from Euphorbia splendens var. hislopii (N.E. Br.) Ursch & Leandri, Euphorbiaceae, on the eggs and engorged larvae of Rhipicephalus (B.) sanguineus (Latreille, 1806) (Acari: Ixodidae). Six aqueous concentrations: 25, 50, 100, 125, 250 and 500 μL/L of the latex of this plant were tested. T...
This study was carried out between July 2007 and June 2008 and reports on the occurrence of human myiasis caused by the New World screwworm, Cochliomyia hominivorax (Coquerel) (Diptera: Calliphoridae) in São Gonçalo in the state of Rio de Janeiro, Brazil. Liquid or solid vaseline was used to suffocate the larvae, which were then preserved in 70% et...
Larvae of Megaselia scalaris (Loew, 1866) feed on a wide range of decomposing organic matter and present a great importance to public health. This study evaluated the effect of crude latex extract from Euphorbia splendens var. hislopii (Euphorbiaceae) on post-embryonic development time of M. scalaris under laboratory conditions. The latex was used...
Forensic entomology is an area of science that serves as a tool in crime scene investigations. Usually, flies are the first insects to reach a dead body and can oviposit just a few hours after arrival. Therefore the knowledge of immature stages is essential for correct identification of the species found on corpses. Scanning electron microscopy giv...
Colonization aspects of the carrion beetle Oxelytrum cayennense (Sturm) in man-size pig carcasses (~60 kg) are presented at Adolpho Ducke Forest Reserve, Manaus, Brazil. This species colonized pig carcasses from bloated to skeletonized stages. Adults were eventually observed preying on fly larvae from the second day postmortem and their larvae were...
Brazilian studies involving entomological succession patterns in carcasses have been used to describe the necrophagous entomofauna of a determined municipality or region with forensic objectives. Following the same objectives, an ecological study with 10 calyptrate dipterans was carried out during the winter of 2007 and the summer of 2008 in the me...
Samples were collected every month in three different sites of the Reserva Biológica do Tinguá, Brazil: site A was located on the border of the forest and sites B and C were located 1,000 and 500 m, respectively, towards the forest interior. The objective was to determine edge effects on a fragment of the Atlantic Forest. The greatest species richn...
The present study intended to analyze calliphorid attraction to traps painted in a variety of colors and the calliphorid constancy index in the Tingua Biological Reserve, Rio de Janeiro state, Brazil. The Diptera were collected monthly in the Reserve, between 2002 and 2005, totaling 24 samplings. Four traps containing sardines as bait were painted...
The calyptrate dipterans are the most important decomposers of human cadavers. Knowledge of their species and distribution are of great importance to forensic entomology, especially because of the enormous diversity in Brazil. Carcasses of domestic pigs (Sus scrofa, L) were the experimental models used to attract calyptrates of forensic interest du...
O objetivo deste trabalho foi relatar um caso raro de sucessão parasitária de duas espécies de larvas de moscas produtora de miíase primária, Dermatobia hominis e Cochliomyia hominivorax, em um jovem de 12 anos atendido em um hospital público no município de São Gonçalo (RJ).Human Myiases for Dermatobia hominis (Linnaeus Jr.) (Diptera, Cuterebridae...
Objetivos: Os autores investigaram a freqüência de P. jiroveci em pacientes sororreagentes para o Vírus da Imunodeficiência Humana (AIDS) atendidos em hospitais de municípios da Baixada Fluminense, bem como, reconhecer aspectos do padrão epidemiológico da infecção por P. jiroveci nesses pacientes. Método: Para a realização da pesquisa foram coletad...
bjetivos: Os autores investigaram a freqüência de P. jiroveci em pacientes sororreagentes para o Vírus da Imunodeficiência Humana (AIDS) atendidos em hospitais de municípios da Baixada Fluminense, bem como, reconhecer aspectos do padrão epidemiológico da infecção por P. jiroveci nesses pacientes.Método: Para a realização da pesquisa foram coletadas...
Larvae of the blowfly Chrysomya megacephala were reared on an artificial diet composed of five different concentrations of albumin (2, 4, 6, 8 and 10%) and the control group was fed on putrid bovine meat. No larvae developed in the 2 and 10% albumin concentrations. The period from newly hatched larvae to adults reared on 4, 6 and 8% albumin was 13....
Forensic entomology is the science that studies the role of insects in decomposing corpses and one of the most common uses is to estimate the post-mortem interval (PMI) based on insect activity on a decomposing body. Usually, flies are the first insects to reach a carcass and are able to oviposit on carrion within a few hours after death. Scanning...