| prestomal teeth of some flies of medical importance. | comparison of prestomal teeth of adult chrysomya megacephala, chrysomya rufifacies, chrysomya nigripes, lucilia cuprina, parasarcophaga dux and musca domestica was accomplished by use of scanning electron microscopy. the prestomal teeth of c. megacephala, c. rufifacies, l. cuprina and p. dux are all similar in appearance in having various degrees of bifurcation at their tips. in contrast, the tips of the prestomal teeth in c. nigripes are very shallowly serrated, but are comparatively more deepl ... | 2003 | 14680932 |
| identification of forensically important fly eggs using a potassium permanganate staining technique. | fly eggs found in corpses can be utilized as entomological evidence in forensic investigations of deaths if the species of fly and the developmental rate at a temperature similar to the death scene are known. the species identification of fly eggs is particularly important, and previously, scanning electron microscope has been used for this purpose. herein, we report a simple technique, using light microscopy, to identify forensically important eggs of chrysomya rufifacies (macquart), chrysomya ... | 2004 | 15006363 |
| antennal sensilla of some forensically important flies in families calliphoridae, sarcophagidae and muscidae. | antennal sensilla of some forensically important fly species in the families calliphoridae (chrysomya megacephala, chrysomya rufifacies, chrysomya nigripes and lucilia cuprina), sarcophagidae (parasarcophaga dux) and muscidae (musca domestica) were studied using scanning electron microscopy. five types of sensilla were observed: trichoid, basiconic, coeloconic, styloconic and sensory pit. only trichoid sensilla are found on the scape of the antenna, while both trichoid and styloconic sensilla ar ... | 2004 | 15288645 |
| larval morphology of chrysomya nigripes (diptera: calliphoridae), a fly species of forensic importance. | the morphology of all instars of chrysomya nigripes aubertin, a blow fly species of forensic importance, is presented with the aid of both light microscopy and scanning electron microscopy (sem). morphological features of the cephalopharyngeal skeleton, anterior spiracle, posterior spiracle, and dorsal spines between the prothorax and mesothorax are highlighted. no consistent features were found, even using sem, for distinguishing the first instar of c. nigripes from that of chrysomya megacephal ... | 2005 | 15962769 |
| morphological observation of puparia of chrysomya nigripes (diptera: calliphoridae) from human corpse. | this article presents chrysomya nigripes aubertin as a blow fly species of forensic importance in thailand, and morphological observation of fly puparia using scanning electron microscopy (sem). morphologically, we focused on the characteristics of puparia used to accurately identify fly species. numerous puparia of c. nigripes were found aggregated, adhering side by side, on the tibia of a skeletonized corpse, which was recovered from a forested area of chiang mai, northern thailand. in the tri ... | 2006 | 16289901 |
| ultrastructure of adhesive device in fly in families calliphoridae, muscidae and sarcophagidae, and their implication as mechanical carriers of pathogens. | the ultrastructure of adhesive device or the pulvilli, pad-like structure between the tarsal claws of the legs, is presented in the blowfly (calliphoridae), housefly and relatives (muscidae), and flesh fly (sarcophagidae) through scanning electron microscopy. the blowfly species were chrysomya chani, chrysomya nigripes, chrysomya pinguis, and chrysomya villeneuvi; while those of the housefly and relatives were musca domestica and hydrotaea chalcogaster, respectively. fresh fly species included b ... | 2006 | 16416126 |
| observations of the third instar larva and puparium of chrysomya bezziana (diptera: calliphoridae). | observations on the ultrastructure of the third instar larva and puparium of the old world screw-worm fly, chrysomya bezziana, are presented utilizing both light microscopy (lm) and scanning electron microscopy (sem). results of this study indicate that the shape of the intersegmental spines between the pro- and mesothorax markedly differ from other blow fly species (chrysomya megacephala, chrysomya rufifacies, chrysomya nigripes, lucilia cuprina) in being broad-based with sharp recurved tips. o ... | 2006 | 16732438 |
| forensic entomology cases in thailand: a review of cases from 2000 to 2006. | this paper presents and discusses 30 cases of cadavers that had been transferred for forensic entomology investigations to the department of forensic medicine, faculty of medicine, chiang mai university, northern thailand, from 2000 to 2006. variable death scenes were determined, including forested area and suburban and urban outdoor and indoor environments. the fly specimens found in the corpses obtained were the most commonly of the blow fly of family calliphoridae, and consisted of chrysomya ... | 2007 | 17647017 |
| identifying fly puparia by clearing technique: application to forensic entomology. | in forensic investigations, immature stages of the fly (egg, larva, or puparia) can be used as entomological evidence at death scenes, not only to estimate the postmortem interval (pmi), analyze toxic substances, and to determine the manner of death but also to indicate the movement of a corpse in homicide cases. of these immature stages, puparia represent the longest developmental time, which makes them of useful. however, in order for forensic entomologists to use puparia effectively, it is cr ... | 2007 | 17687570 |
| ommatidia of blow fly, house fly, and flesh fly: implication of their vision efficiency. | this work aims to elucidate the number of ommatidia or facets (the outwardly visible units of each ommatidium) for compound eyes in blow flies [chrysomya megacephala (f.), chrysomya rufifacies (macquart), chrysomya nigripes (aubertin), lucilia cuprina (wiedemann)], house flies (musca domestica l.), and flesh flies (liosarcophaga dux thomson) by manual counts of the corneal spreads. the head of the fly in each species was soaked in 20% potassium hydroxide solution at room temperature for 7 days, ... | 2008 | 18343951 |
| a preliminary study on the decomposition and dipteran associated with exposed carcasses in an oil palm plantation in bandar baharu, kedah, malaysia. | this study was carried out in an oil palm plantation in bandar baharu, kedah using monkey carcasses and focuses in documenting the decomposition and dipteran colonization sequences in 50 days. this is the first study of diptera associated with the exploitation of carcasses conducted in the north of peninsular malaysia during the dry and wet seasons thereat. during the process of decomposition in both seasons, five phases of decay were recognized namely fresh, bloated, active decay, advance decay ... | 2009 | 19696721 |
| molecular identification of blow flies recovered from human cadavers during crime scene investigations in malaysia. | forensic entomology applies knowledge about insects associated with decedent in crime scene investigation. it is possible to calculate a minimum postmortem interval (pmi) by determining the age and species of the oldest blow fly larvae feeding on decedent. this study was conducted in malaysia to identify maggot specimens collected during crime scene investigations. the usefulness of the molecular and morphological approach in species identifications was evaluated in 10 morphologically identified ... | 2012 | 23424775 |
| applicability of partial characterization of cytochrome oxidase i in identification of forensically important flies (diptera) from china and egypt. | precise species identification of every insect sample collected from criminal scenes play an essential role in the accurate estimation of postmortem interval. the morphological similarity poses a great challenge for forensic entomologists. dna-based method can be used as a supplemental means of morphological method. in the present study, we demonstrate the applicability of the 304-bp cytochrome oxidase i gene fragment in molecular identification of forensically important diptera. we analyzed 75 ... | 2013 | 23661266 |
| the importance of habitat in the ecology of decomposition on rabbit carcasses in malaysia: implications in forensic entomology. | the stages of decomposition and the faunal succession on rabbit carcasses in three different habitats, namely jungle, rural, and highland areas, were studied. three new zealand white rabbit (oryctolagus cuniculus) carcasses weighing ∼2 kg were sampled daily until the decomposition process was completed. representative specimens of adult flies, larvae, pupa, and mites were collected from the carcasses and processed in the laboratory. there were differences in decomposition rate and faunal success ... | 2015 | 26336275 |
| species composition of carrion blow flies in northern thailand: altitude appraisal. | distribution and occurrence of blow flies of forensic importance was performed during 2007 and 2008 in chiang mai and lampang provinces, northern thailand. surveys were conducted in forested areas for 30 minutes using a sweep net to collected flies attracted to a bait. a total of 2,115 blow flies belonging to six genera and 14 species were collected; chrysomya megacephala (fabricius) (44.7%), c. pinguis (walker) (15.1%), c. chani kurahashi (9.3%), c. thanomthini kurahashi & tumrasvin (0.3%); ach ... | 2017 | 24626423 |
| morphology and identification of fly eggs: application in forensic entomology. | fly eggs found in corpses can be used as entomological evidence in forensic investigation. this study aims to investigate the morphology of forensically important fly eggs. eggs of chrysomya rufifacies, chrysomya megacephala, chrysomya pinguis, chrysomya nigripes, hypopygiopsis tumrasvini, lucilia cuprina, lucilia porphyrina and musca domestica were examined using 1% potassium permanganate solution for 1 min. morphometric analysis revealed that the mean length of hy. tumrasvini (1.63 mm) and c. ... | 2013 | 23959498 |
| review of forensically important entomological specimens collected from human cadavers in malaysia (2005-2010). | forensic entomological specimens collected from human decedents during crime scene investigations in malaysia in the past 6 years (2005-2010) are reviewed. a total of 80 cases were recorded and 93 specimens were collected. from these specimens, 10 species of cyclorrphagic flies were identified, consisting of chrysomya rufifacies (macquart) -38 specimens (40.86%), chrysomya megacephala (fabricius) -36 specimens (38.70%), chrysomya villeneuvi (patton) -2 specimens (2.15%), chrysomya nigripes (aube ... | 2013 | 23756518 |
| ultrastructure of male genitalia of blow flies (diptera: calliphoridae) of forensic importance. | male genitalia of blow flies (diptera: calliphoridae) are distinctive in their morphological features and are often used for species identification. the aim of this work was to investigate the male genitalia of blow flies of medical and forensic importance from thailand at the ultrastructural level, using scanning electron microscopy (sem). flies in two subfamilies were examined: chrysomyinae [chrysomya bezziana villeneuve, chrysomya chani kurahashi, chrysomya nigripes aubertin, chrysomya pingui ... | 2017 | 29248415 |
| temperature-dependent development and the significance for estimating postmortem interval of chrysomya nigripes aubertin, a new forensically important species in china. | in forensic entomology, the developmental duration and larval body length of sarcosaprophagous flies are presently the two major approaches to estimate minimal postmortem interval (pmimin). a full characterization of the developmental stages of calliphoridae, a predominating species on corpses, is especially important for pmi estimation. chrysomya nigripes aubertin, which appears on the corpse mainly during the decay and the post-decay stages, is of significant value for pmimin estimation. howev ... | 2016 | 26872466 |
| fine structure of chrysomya nigripes (diptera: calliphoridae), a fly species of medical importance. | the fine structure of chrysomya nigripes aubertin, a blow fly species of medical importance, is presented using scanning electron microscopy (sem) to contribute information on the morphology of the adult of this fly species. the surface of the dome-shaped ommatidia exhibits a microscopic granulose appearance. the palpus is equipped with small sensilla basiconica and sensilla chaetica, which provide sensory reception for detecting environmental information. at the apex of the mouthparts, the labe ... | 2007 | 17216239 |
| ultrastructure of eggshell of chrysomya nigripes aubertin (diptera: calliphoridae). | we examined the eggshell structure of the blowfly, chrysomya nigripes aubertin, a species of forensic importance, using scanning electron microscopy. a relatively wide plastron region was located dorsally. it extended almost the entire length of the egg and bifurcated slightly, close to the micropyle, which is a deep cavity surrounded by an elevated, fine, wavy rim. the chorionic sculpture had an hexagonal pattern, with a smooth and elevated boundary. the ruptured eggshell showed the outermost e ... | 2004 | 15114482 |