RESUMO
Rat-tailed larvae of the syrphid species Palpada scutellaris (Fabricius, 1805) are documented causing an enteric human myiasis in Costa Rica. This is the first time that the genus Palpada is recorded as a human myiasis agent. We report a 68-year-old woman with intestinal pain and bloody diarrhea with several live Palpada larvae present in the stool. Using molecular techniques (DNA barcodes) and both electronic and optical microscopy to study the external morphology, the preimaginal stages of the fly were unambiguously identified. An identification key to all syrphid genera actually known as agents of human and animal myiases is provided for larvae, puparia, and adults. Moreover, a critical world review of more than 100 references of Syrphidae as myiasis agents is also given, with emphasis on the species with rat-tailed larvae.
Assuntos
Dípteros/fisiologia , Miíase/parasitologia , Animais , Costa Rica , Dípteros/classificação , Dípteros/citologia , Dípteros/ultraestrutura , Fezes/parasitologia , Feminino , Humanos , Larva/classificação , Larva/citologia , Larva/fisiologia , Larva/ultraestrutura , Pessoa de Meia-Idade , Miíase/patologia , Miíase/fisiopatologiaRESUMO
Condição mórbida causada por ectoparasitos - larvas de vetores dípteros. Podem ser classificados, de acordo com a natureza do agente etiológico, em específicas, semi-específicas e acidentes ou, ainda, em miíase cutânea ou cavitária. O diagnóstico é estabelecido em bases clínicas. O tratamento consiste na remoção mecânica de cada uma das larvas ou no oclusão do óstio de entrada da lesão, a fim de sufocar o parasito. O artigo objetiva a revisão de aspectos relevantes, correlacionados com a parasitose
Assuntos
Humanos , Infecção por Mosca da Bicheira/complicações , Infecção por Mosca da Bicheira/fisiopatologia , Infecção por Mosca da Bicheira/transmissão , Miíase/etiologia , Miíase/fisiopatologia , Miíase/terapia , Ivermectina , Larva , VirulênciaRESUMO
Travelers who have visited tropical areas may exhibit aggressive forms of obligatory myiases, in which the larvae (maggots) invasively feed on living tissue. The risk of a traveler's acquiring a screwworm infestation has been considered negligible, but with the increasing popularity of adventure sports and wildlife travel, this risk may need to be reassessed.
Assuntos
Larva/patogenicidade , Miíase/fisiopatologia , Viagem , Adulto , Animais , Brasil , Humanos , Masculino , Miíase/etiologia , EsportesAssuntos
Miíase/veterinária , Escroto , Sêmen/citologia , Doenças dos Ovinos/fisiopatologia , Doenças Testiculares/veterinária , Animais , Masculino , Miíase/diagnóstico por imagem , Miíase/fisiopatologia , Escroto/lesões , Escroto/patologia , Ovinos , Doenças dos Ovinos/diagnóstico por imagem , Doenças Testiculares/diagnóstico por imagem , Doenças Testiculares/fisiopatologia , UltrassonografiaRESUMO
The fecundity and development of larval stages of the cuterebrid bot fly A. baeri were studied in an unusual host, remotely related to the primary host. Third-instar Alouattamyia baeri (Shannon & Greene) removed from howler monkeys, Alouatta palliata, were allowed to pupate and then were cultured under controlled conditions. Eclosion occurred after 37.9 +/- 0.4 (mean +/- SE) (male) and 38.2 +/- 0.4 (female) d at 26 degrees C. Five-day-old females were mated using a tethered flight technique and oviposited on ridged filter paper. The total egg complement was 1,399 +/- 243 (n = 2) eggs per female. Eggs were fully embryonated after incubation for 5 d at 26 degrees C. Eggs hatched when warmed in the palm of the hand. Hatching of eggs from an individual batch was asynchronous. Newly hatched larvae would not penetrate intact skin on a rabbit, Oryctolagus cuniculus L. Larvae placed near the nares or on the ocular conjunctiva migrated rapidly from view. Warbles containing larvae were first observed on infested rabbits 5 d after infestation. Development of larvae proceeded until day 39 after infestation, when nearly mature 3rd instars were observed. None of the larvae survived to pupate.
Assuntos
Alouatta/parasitologia , Dípteros/fisiologia , Miíase/veterinária , Doenças dos Primatas/parasitologia , Animais , Túnica Conjuntiva/parasitologia , Feminino , Fertilidade , Larva , Masculino , Miíase/fisiopatologia , Panamá , Coelhos , Pele/parasitologiaAssuntos
Antibacterianos/administração & dosagem , Antibacterianos/uso terapêutico , Biópsia , Hansenostáticos/administração & dosagem , Hansenostáticos/uso terapêutico , Hanseníase/complicações , Hanseníase/diagnóstico , Hanseníase/fisiopatologia , Hanseníase/terapia , Miíase/complicações , Miíase/diagnóstico , Miíase/fisiopatologia , Miíase/terapia , Osso Nasal/cirurgia , Osso Nasal/fisiopatologia , Osso Nasal/patologiaRESUMO
A case of erysipelas-like symptoms in a 26-year-old female student of medicine having returned from Nicaragua to Germany is reported. On the removal of the scurf covering the supposed entrance of the erysipelas, a larva of Dermatobia hominis, the human bot fly, was extracted from the head skin, and the inflammation completely disappeared within a short period of time.