Academic literature on the topic 'Dipterous larvae'
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Journal articles on the topic "Dipterous larvae"
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Abdoola, I., MMR Bouckaert, and M. Ibrahim. "Mandibular myiasis: A case report." South African Dental Journal 77, no. 02 (2022): 92–93. http://dx.doi.org/10.17159/2519-0105/2022/v77no2a6.
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Myiasis is a condition characterised by the infestation of live vertebrates with dipterous larvae. Myiasis is derived from the Greek word mya, meaning fly. Dipterans, (order Diptera), are two-winged insects known as true flies. Myiasis tends to occur in cutaneous, necrotic lesions of patients who have weak immune systems, who inhabit unhygienic environments. Maggot Debridement Therapy is an uncommon treatment of debriding necrotic tissue, with some utility. A case of mandibular myiasis involving a malignant mandibular lesion that was colonised by maggots is discussed.
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Joo, Chong Yoon, and Jong Bae Kim. "Nosocomial submandibular infections with dipterous fly larvae." Korean Journal of Parasitology 39, no. 3 (2001): 255. http://dx.doi.org/10.3347/kjp.2001.39.3.255.
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Sengul, Fatih, Peris Celikel, and Ridvan Kirman. "A Strange Gingival Orifice in an Infant: A Case of Oral Myiasis." Journal of Clinical Pediatric Dentistry 45, no. 5 (2021): 341–43. http://dx.doi.org/10.17796/1053-4625-45.5.9.
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Myiasis is a parasitic infection of humans and animals caused by dipterous larvae and is often seen in rural areas. For the first time in the literature as a case of gingival myiasis in an 18-month-old healthy child with good oral hygiene is reported. This case presents the clinical and histopathologic features of oral myiasis. The patient had a swelling in the upper lip for three days and a perforation in the gingiva. After mechanical removal of larvae intraoral symptoms resolved within six days. The larva was identified as Wohlfahrtia magnifica according to the histopathologic evaluation. Dentists working in rural areas should be aware of this very rare condition and its treatment.
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Guimarães, Jorge A., Fabiana E. Gallardo, Norma Beatriz Diaz, and Roberto A. Zucchi. "Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations." Zootaxa 278 (December 31, 2003): 1–23. https://doi.org/10.5281/zenodo.156603.
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Guimarães, Jorge A., Gallardo, Fabiana E., Diaz, Norma Beatriz, Zucchi, Roberto A. (2003): Eucoilinae species (Hymenoptera: Cynipoidea: Figitidae) parasitoids of fruitinfesting dipterous larvae in Brazil: identity, geographical distribution and host associations. Zootaxa 278: 1-23, DOI: 10.5281/zenodo.156603
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Federici, Brian A., and Leah S. Bauer. "Cyt1Aa Protein of Bacillus thuringiensisIs Toxic to the Cottonwood Leaf Beetle, Chrysomela scripta, and Suppresses High Levels of Resistance to Cry3Aa." Applied and Environmental Microbiology 64, no. 11 (1998): 4368–71. http://dx.doi.org/10.1128/aem.64.11.4368-4371.1998.
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ABSTRACT The insecticidal activity of Bacillus thuringiensis is due primarily to Cry and Cyt proteins. Cry proteins are typically toxic to lepidopterous, coleopterous, or dipterous insects, whereas the known toxicity of Cyt proteins is limited to dipterans. We report here that a Cyt protein, Cyt1Aa, is also highly toxic to the cottonwood leaf beetle, Chrysomela scripta, with a median lethal concentration of 2.5 ng/mm2 of leaf surface for second-instar larvae. Additionally, we show that Cyt1Aa suppresses resistance to Cry3Aa greater than 5,000-fold in C. scripta, a level only partially overcome by Cry1Ba due to cross-resistance. Studies of the histopathology of C. scripta larvae treated with Cyt1Aa revealed disruption and sloughing of midgut epithelial cells, indicating that its mechanism of action against C. scripta is similar to that observed in mosquito and blackfly larvae. These novel properties suggest that Cyt proteins may have an even broader spectrum of activity against insects and, owing to their different mechanism of action in comparison to Cry proteins, might be useful in managing resistance to Cry3 and possibly other Cry toxins used in microbial insecticides and transgenic plants.
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Ly, Priscilla, Adiel Aizenberg, Taylor Martin, et al. "Intestinal Myiasis Caused bySarcophagaspp. in Cusco, Peru: A Case Report and Review of the Literature." Case Reports in Infectious Diseases 2018 (May 27, 2018): 1–4. http://dx.doi.org/10.1155/2018/3685439.
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Myiasis is the infestation by dipterous fly larvae in humans and animals. The larvae can infect living or necrotic tissue involving the skin, nasopharynx, genitourinary, and gastrointestinal tracts. The accidental ingestion of eggs causes infection of the intestinal tract. We report a case of intestinal myiasis caused bySarcophagaspp. larvae in a two-year-old child from Limatambo province in the Cusco region of Peru. Live larvae were identified incidentally in this child’s stool sample during the study screening forStrongyloides stercoralis. The child did not have any constitutional or abdominal symptoms. The morphological examination of the specimen under magnification revealedSarcophagaspp. larvae. We performed a literature review of publications reporting intestinal myiasis caused bySarcophagaspp. and discussed key aspects of this infestation.
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Hoyer, P., R. R. Williams, M. Lopez, and M. M. Cabada. "Human Nasal Myiasis Caused byOestrus ovisin the Highlands of Cusco, Peru: Report of a Case and Review of the Literature." Case Reports in Infectious Diseases 2016 (2016): 1–4. http://dx.doi.org/10.1155/2016/2456735.
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Myiasis is the infestation by dipterous larvae. The larvae can infect intact or decaying tissue including the skin or epithelial surfaces of the orbits, nose, and genitourinary and gastrointestinal tracts. We report a case of primary obligatory nasal myiasis byOestrus ovisin a 56-year-old man from Cusco in Peru. He presented with nasal pruritus, congestion, and sneezing white “cottony” material. The material was identified asO. ovislarvae. A literature review of publications reporting nasal myiasis caused byO. ovisis presented.
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McOrist, Steven, Ruth Blunt, and Connie Gebhart. "Pig-associated Lawsonia intracellularis in various on-farm dipterous fly stages." Journal of Swine Health and Production 19, no. 5 (2011): 277–83. http://dx.doi.org/10.54846/jshap/689.
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Objective: To characterize the potential of pig-associated Diptera flies to carry Lawsonia intracellularis. Materials and methods: On 15 British farms, invertebrate communities were trap-collected (14 per year), counted, and sorted into species groups. Lawsonia serological tests were conducted and total DNA was extracted from pig feces; DNA was also extracted from adult flies, pupae, and larvae samples and viscera of Blatta species. Each DNA sample was tested for L intracellularis by polymerase chain reaction; positive samples were subtyped via specific variable number tandem repeat analysis. Results: The pig-associated fly community was generally dominated by Musca domestica (house fly; n = 13 farms), but on one farm each, Ophyra species (garbage fly) or Drosophila species (fruit fly) were dominant. Also noted were Muscina stabulans (false stable fly), Stomoxys calcitrans (stable fly), and Eristalis species (hover flies); Blatta orientalis cockroaches were noted on two farms. Lawsonia infections were routinely detected in nursery pigs on 14 farms. On five of 12 Lawsonia-positive farms with Musca-dominant insects, Lawsonia DNA was detected within numerous flies (22% to 75% of fly samples from nursery pens). On two farms, larval forms of Eristalis from pen floors were also Lawsonia-positive. Subtyping indicated that the same Lawsonia isolate occurred within pigs and the pig-associated fly stages (Musca adults and Eristalis larvae). The DNA extracted from cockroach samples, and from other flies, was negative. Implication: Musca and Eristalis flies have the greatest potential to carry and transmit Lawsonia intracellularis due to their pig-associated life cycle stages.
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Flegkas, P. V., S. S. Andreadis, E. S. Andreadou, J. Delis, T. Moumtsidelis, and M. Savopoulou-Soultani. "Wound myiasis caused by Lucilia sericata in an open femoral fracture treated with external fixation." ENTOMOLOGIA HELLENICA 23, no. 1 (2017): 39. http://dx.doi.org/10.12681/eh.11533.
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On examination of the wound of a patient who was treated previously with external fixation for a diaphysial fracture of the femur, we observed the presence of multiple living larvae (maggots) of dipterous flies. Treatment included removal of the maggots and use of antibiotic. The importance of hygiene and sanitation is discussed.
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Oliva, Ester, Graziano Bargiggia, Gianpaolo Quinzan, Paola Lanza, and Claudio Farina. "Furuncular myiasis in Italian traveler returning from Kenya." Journal of Infection in Developing Countries 14, no. 01 (2020): 114–16. http://dx.doi.org/10.3855/jidc.11560.
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Myiasis has been defined as the infestation of organs and/or tissues with dipterous larvae. They are especially widespread in tropical and subtropical areas. Cutaneous myiasis is its most frequent clinical presentation. This report presents a case of furuncular myiasis caused by the larva of Cordylobia anthropophaga in a 22-year-old girl living in Bergamo, Northern Italy, who returned from Kenya (Watamu) with a big, painful furuncle in her right gluteus. The patient accidentally removed the larva from a large pimple and took it to the infectious disease ambulatory clinic at the ASST “Papa Giovanni XXIII” Hospital, Bergamo. In the Microbiology and Virology Department of the same hospital, a larva of C. anthropophaga was identified and the diagnosis of myiasis was confirmed.
Dissertations / Theses on the topic "Dipterous larvae"
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Almeida, Maria Aparecida Ferreira de. "Aspectos da Biologia de Tachinaephagus Zealandicus Ashmead (Hymenoptera:Encyrtidae), parasitoide de larvas de dipteros sinantropicos." [s.n.], 2000. http://repositorio.unicamp.br/jspui/handle/REPOSIP/313937.
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Orientador: Angelo Pires do Prado<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-07-27T09:13:49Z (GMT). No. of bitstreams: 1
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Previous issue date: 2000<br>Resumo: Tachinaephagus zealandicus Ashmead é um endoparasitóide gregário que ataca larvas de terceiro instar de dípteros muscóideos no Hemisfério Sul. O objetivo deste estudo foi avaliar a influência de seis temperaturas constantes (16, 18, 20, 22, 25 e 27°C) no tempo de desenvolvimento, a influência da ordem de emergência na longevidade, o efeito da temperatura e tratamento alimentar na longevidade, a influência do tratamento alimentar, densidade do hospedeiro e temperatura na taxa de ataque de T. zealandicus e também avaliar a influência de quatro temperaturas constantes (15, 20, 25, 30° C) no tempo de desenvolvimento e longevidade de colônias infectadas e não infectadas por um microsporideo. O sucesso na emergência foi maior em 22°C tanto para machos quanto para remeas; um número significativamente menor (24.130.4%) de parasitóides emergiu em 16°C e 25°C comparados com 22°C. O tempo de desenvolvimento foi de 24.0 a 56.9 dias para os dois sexos. Não foi observada emergência em 27°C. O parasitóides da mesma coorte que emergiram primeiro apresentaram maior longevidade que aqueles que emergiram mais tarde. A longevidade das remeas que receberam mel e água decresceu com o aumento da temperatura e aquelas mantidas em 16°C viveram três vezes mais que aquelas mantidas em 27°C. As remeas que receberam mel e água apresentaram longevidades semelhantes entre 16-20°C, e remeas que receberam somente água viveram de 4.8-7.6 dias em todas as temperaturas. As remeas viveram significativamente mais que os machos em todas as temperaturas, exceto em 16°C, mas as diferenças devido ao sexo foram pequenas se comparadas com os efeitos da temperatura e tratamento alimentar. Os tratamentos alimentares (mel, mel + água, água, e jejum) apresentaram efeitos estatisticamente significativos nas taxas de ataque em C. putoria e M domestica, contudo nenhum efeito significativo foi constato nos tratamentos quando analisada a progênie produzida. Tanto para M domestica quanto C. putoria foi observado que a porcentagem de hospedeiros mortos decresceu com o aumento da densidade do hospedeiro. A temperatura apresentou efeito significativo na taxa de ataque do parasitóide sobre C. putoria. Durante 24 horas de exposição, as maiores taxas de ataque foram observadas em 22°C. Para o número de hospedeiros mortos, não foram encontradas significativas diferenças entre 20, 22, 25 e 27°C. Um microsporideo não determinado foi encontrado infectando T. zealandicus. Esporos estavam presentes em todas as regiões do corpo do inseto e em todos os estágios de desenvolvimento. Adultos infectados apresentaram cerca de 3.75 x 105 esporos. Para separar a colônia em indivíduos infectados e não infectados, as remeas infectadas foram tratadas com Rifampicin misturado ao mel como alimento e após 8 dias cerca de 37% dos indivíduos da progênie examinada ainda estavam infectados. Uma cultura não infectada foi estabelecida e as duas colônias foram testadas para o modo de transmissão. Foi observado que a eficiência na transmissão materna foi de 96.3%. Parasitóides infectados desenvolveram significativamente mais rápido que os não infectados em 15,20 e 25°C. Pupários que não apresentaram emergência foram dissecados e os resultados mostraram que os parasitóides infectados apresentaram maior dificuldade para emergir de seus pupários, especialmente em 20 e 25°C. A longevidade das remeas decresceu com o aumento das temperaturas. Os efeitos da infecção na longevidade foram fortes em todas as temperaturas, entre os parasitóides que receberam mel e água; a longevidade foi pequena em todos os grupos que receberam somente água. Os resultados de ANOV A mostraram que não somente a temperatura e o tratamento alimentar, mas também a infecção afetou significativamente a longevidade de fêmeas e de machos. Fêmeas e machos da colônia infectada apresentaram tempos de vida similares (3.7-3.9 dias) quando os parasitóides receberam mel, água e larvas de mosca doméstica continuadamente após emergência. Parasitóides infectados produziram progênie significativamente menor que os não infectados, e uma grande proporção de parasitóides infectados falharam para emergir do pupário do hospedeiro. Grande parte do ataque ao hospedeiro e parasitismo ocorreu durante o primeiro dia de emergência, indicando que esta espécie é proovigênica. Foram comparados o ataque ao hospedeiro e o parasitismo sobre duas espécies de mosca, mosca doméstica e Sarcophaga bullata indicando que o efeito da infecção foi modulado pela espécie de hospedeiro presente. Números similares foram observados para ambos hospedeiros para número de pupas mortas por infectados e não infectados (70.2-74.1 hospedeiros atacados por grupo de 5 fêmeas de T. zealandicus). Contudo, parasitóides infectados produziram substancialmente menos progênie de mosca doméstica (311.1 para não infectados comparados com 138.3 para infectados), porém a infecção não apresentou efeito significativo na progênie produzida para o hospedeiro maior (s. bullata) (588.2 e 460.1 progênie produzida por não infectados e infectados, respectivamente). Diferenças na atuação para as duas espécies de hospedeiro pode ser devida a diferenças qualitativas entre ambas ou mesmo a pronunciada diferença entre tamanhos das duas espécies (190 mgllarva para S. bullata versus 20 mgllarva para M domestica). T. zealandicus não infectados estocados em 15°C apresentaram maior taxa de ataque ao hospedeiro (58-62 hospedeiros mortos por grupo de 5 fêmeas do parasitóide em 25°C) e progênie produzida (173.8-261.2 indivíduos) após 6-12 dias estocados 10 nesta temperatura. Relativamente poucos hospedeiros foram parasitados no primeiro dia em 15°C<br>Abstract: Tachinaephagus zealandicus Ashmead is a gregarious endoparasitoid that attacks third instars of muscoid flies in the Southem Hemisphere. The purpose of the present study was to evaluate the influence of six constant temperatures (16, 18, 20, 22, 25 and 27°C) on development time, the influence of emergence order on longevity, and the effects of temperature and food treatment on longevity, the influence of nutritional treatment, host density and temperature on attack rates on T. zealandicus and also evaluated the influence of four constant temperatures (15, 20, 25, 30° C) on development time and 10ngevity of microsporidium-infected and uninfected colonies. Emergence success was greatest at 22°C for both males and females; significantly fewer (24.1-30.4%) parasitoids emerged at 16°C and 25°C compared with 22°C. Development time ranged fiom 24.0 to 56.9 days for both sexes. No emergence was observed at 27°C. Early-emerging parasitoids had greater longevity than parasitoids that emerged later fiom the same cohorts. The longevity of females given honey and water decreased with increasing temperature, and those reared at 16°C lived about three times longer than those kept at 27°C. Females given honey and water had similar longevities at 16-20°C, and females that were given only water lived for only 4.8-7.6 days at all temperatures. Females lived significantly longer overall than males at alI temperatures except 16°C, but differences due to sex were small compared to the effects of temperature and nutrition. Nutritional treatment (honey, honey+water, water, and starvation) had statistically significant effects on rates of attack on C. puloria andM domestica, however no significant treatment effects were observed in rates of progeny production. With both M domestica and C. puloria it was observed that the percentage of killed hosts decreased as host density increased. Temperature had significant effects on host attacks on C. puloria. During 24 hours of ex-posure, highest rates ofhost attacks were observed at 22°C. For the number ofkilled hosts, differences were not statistically significant among 20, 22, 25 and 27°C. An undetermined microsporidium was found infecting Tachinaephagus zealandicus, a gregarious parasitoid that attacks third instar larvae of muscoid flies. Spores were present in alI body regions and in all stages of development. Infected adults contain an average of 3.75 x 105 spores. ln order to separate the colony into infected and uninfected individuais, we treated infected females on rifampicin mixed with honey as food and after 8 days ca. 37% of individuais of progeny examined were still infected. An uninfected culture was established and the two colonies were tested for infection transmission. lt was observed that the efficiency of maternal transmission was 96.3%. lnfected parasitoids developed significantly faster than uninfected ones at 15, 20 and 25°C. Uneclosed puparia were dissected and the results showed that infected parasitoids had difficulty emerging fiom host puparia, especially at 20 and 25°C. The longevity of females decreased as temperatures increased Effects of infection on longevity were strongest at alI temperatures among parasitoids that were given honey and water; longevity was short in alI parasitoid groups that were only given water. ANOV A results showed that not only temperature and feeding treatment but also the infection affected significantly the longe"ity of females and males. Females and females fiom a colony infected with the undetennined microsporidium had similar lifespans (3.7-3.9 days) when parasitoids were provided with honey, water and house fly larvae continously after emergence. Infected parasitoids produced significant1y fewer progeny than uninfected parasitoids, and a greater proportion of infected parasitoid progeny failed to emerge from host puparia. Most host attacks and parasitism occurred on the first day of emergence, and little parasitism was observed by day 3 after emergence for both uninfected and infected females, indicating that this is a proovigenic species that emerges with a predetermined number of oocytes that are deposited when hosts are available for parasitism. Comparison of host attacks and parasitism on two species of flies (house flies and Sarcophaga bullata (Diptera: Sarcophagidae) indicated that the effects of infectÍon are modulated by the species of host present. Similar numbers of both species fly hosts were killed by uninfected and infected parasitoids (70.2-74.1 hosts attacked per group of 5 female T zealandicus). However, infected parasitoids produced substantially fewer progeny from house fly hosts (311.1 for uninfected parasitoids compared with 138.3 progeny from infected parasitoids), wheras infection had no significant effect on progeny production from the much larger S. bullata hosts (588.2 and 460.1 progeny produced by uninfected and infected parasitoids, respectively). Differences in performance on the two host species may be due to innate differences in host quality or to the pronouced size differences of the two species (190 mgllarva for S. bullata versus 20 mgllarva for M domestica). Uninfected T zealandicus that were stored at 15°C had highest rates ofhost attacks (58-62 hots killed per group offive female parasitoids at 25°C) and progeny production 173.8-261.2 progeny) after 6-12 days of storage at this temperature; relatively few hosts were attacked or parasitized after O or 1 day at 15°C<br>Doutorado<br>Doutor em Parasitologia
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Ruiz, Rodolfo Antonio [UNESP]. "Aspectos da biologia larval de Chrysomya megacephala (F.) (Diptera : calliphoridae): curva de crescimento e período de mais rápido desenvolvimento larval." Universidade Estadual Paulista (UNESP), 2008. http://hdl.handle.net/11449/99561.
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ruiz_ra_me_rcla.pdf: 1630746 bytes, checksum: cb67ed2f0aedd9869cabbf625a39bd27 (MD5)<br>Universidade Estadual Paulista (UNESP)<br>Em meados dos anos 70, moscas-varejeiras do gênero Chrysomya foram introduzidas acidentalmente no Brasil, sendo as mesmas de considerável importância médico-sanitária, podendo ser vetoras de enteropatógenos, causar miíases facultativas nos animais e no homem, além de poderem ser utilizadas em estudos forenses, na estimativa de intervalo pós morte (IPM) em cadáveres humanos. Nessas moscas, o estágio larval é o principal período em que geralmente ocorre competição do tipo exploratória por recursos alimentares discretos e efêmeros, em ambientes naturais. Após a exaustão dos recursos alimentares, as larvas abandonam o substrato alimentar em busca de um sítio para pupação. O objetivo inicial do presente trabalho foi o de fazer um estudo detalhado do período de mais rápido crescimento larval (PMRC) no desenvolvimento de larvas em dieta artificial em populações experimentais de Chrysomya megacephala (F.), atualmente uma das espécies necrófagas mais abundantes em vários estados brasileiros, sendo que, detalhes desse seu período de mais rápido crescimento larval e efeitos de interrupções no mesmo por falta de alimento, não tinham sido ainda devidamente estudados. Posterior à determinação do PMRC, período este com seu início às 48 horas e final às 72 horas do desenvolvimento larval para a espécie C. megacephala, foi determinado que o período mais crítico para interrupção da alimentação foi às 60 horas do desenvolvimento larval, sendo este no meio do PMRC. A partir deste resultado, procurou-se estudar detalhadamente diferentes períodos de interrupções alimentares a partir de 60 horas, para se obter dados de desenvolvimento dessa espécie em condições de falta de recursos alimentares por tempos variados, avaliando o que uma inanição alimentar no período mais crítico do desenvolvimento larval acarretaria na seqüência deste desenvolvimento.<br>Blowflies of the Chrysomya genus were unintentionally introduced into southern Brazilian in the 1970’s. These flies have considerable medico-sanitary importance, for they may be vectors of enteropathogens and cause primary and secondary myiasis in man and other animals. Besides that, they may also be used on forensic studies to estimate the post mortem interval (PMI) of human corpses. The larval stage is a critical period, since it is generally during that period that we can observe an exploitative competition for patchily distributed, ephemeral feeding resources on natural environments. After the exhaustion of those resources, the larvae abandon the feeding substrate searching for a pupation site. The initial goal of this work was to study in details the period of most rapid growth (PMRG) during the larval development. It was used an experimental population of Chrysomya megacephala (F.) reared on artificial diet. This species is one of the most frequent necrophagous species in many Brazilian states. There are no proper studies on the details of the period of fastest larval growth rate of that species, and neither on the effects of interruptions on this period caused by lack of food supplies. After determining that the PMRG for C. megacephala was from 48h to 72h of the larval development, it was concluded that the most critical period for the feeding interruption was on the middle of the PMRG, i.e., at 60h of the larval development. From this result, we tried to cautiously study different periods of feeding interruptions starting at 60h of larval development, in order to gather data on the development of this species when submitted to a condition of lack of feeding resources during different periods of time. With such data, we analyzed the consequences of starvation intervals on that critical period of the larval development.
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Ruiz, Rodolfo Antonio. "Aspectos da biologia larval de Chrysomya megacephala (F.) (Diptera : calliphoridae) : curva de crescimento e período de mais rápido desenvolvimento larval /." Rio Claro : [s.n.], 2008. http://hdl.handle.net/11449/99561.
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Orientador: Claudio José von Zuben<br>Banca: Wesley Augusto Conde Godoy<br>Banca: Gisele Souza Rosa<br>Resumo: Em meados dos anos 70, moscas-varejeiras do gênero Chrysomya foram introduzidas acidentalmente no Brasil, sendo as mesmas de considerável importância médico-sanitária, podendo ser vetoras de enteropatógenos, causar miíases facultativas nos animais e no homem, além de poderem ser utilizadas em estudos forenses, na estimativa de intervalo pós morte (IPM) em cadáveres humanos. Nessas moscas, o estágio larval é o principal período em que geralmente ocorre competição do tipo exploratória por recursos alimentares discretos e efêmeros, em ambientes naturais. Após a exaustão dos recursos alimentares, as larvas abandonam o substrato alimentar em busca de um sítio para pupação. O objetivo inicial do presente trabalho foi o de fazer um estudo detalhado do período de mais rápido crescimento larval (PMRC) no desenvolvimento de larvas em dieta artificial em populações experimentais de Chrysomya megacephala (F.), atualmente uma das espécies necrófagas mais abundantes em vários estados brasileiros, sendo que, detalhes desse seu período de mais rápido crescimento larval e efeitos de interrupções no mesmo por falta de alimento, não tinham sido ainda devidamente estudados. Posterior à determinação do PMRC, período este com seu início às 48 horas e final às 72 horas do desenvolvimento larval para a espécie C. megacephala, foi determinado que o período mais crítico para interrupção da alimentação foi às 60 horas do desenvolvimento larval, sendo este no meio do PMRC. A partir deste resultado, procurou-se estudar detalhadamente diferentes períodos de interrupções alimentares a partir de 60 horas, para se obter dados de desenvolvimento dessa espécie em condições de falta de recursos alimentares por tempos variados, avaliando o que uma inanição alimentar no período mais crítico do desenvolvimento larval acarretaria na seqüência deste desenvolvimento.<br>Abstract: Blowflies of the Chrysomya genus were unintentionally introduced into southern Brazilian in the 1970's. These flies have considerable medico-sanitary importance, for they may be vectors of enteropathogens and cause primary and secondary myiasis in man and other animals. Besides that, they may also be used on forensic studies to estimate the post mortem interval (PMI) of human corpses. The larval stage is a critical period, since it is generally during that period that we can observe an exploitative competition for patchily distributed, ephemeral feeding resources on natural environments. After the exhaustion of those resources, the larvae abandon the feeding substrate searching for a pupation site. The initial goal of this work was to study in details the period of most rapid growth (PMRG) during the larval development. It was used an experimental population of Chrysomya megacephala (F.) reared on artificial diet. This species is one of the most frequent necrophagous species in many Brazilian states. There are no proper studies on the details of the period of fastest larval growth rate of that species, and neither on the effects of interruptions on this period caused by lack of food supplies. After determining that the PMRG for C. megacephala was from 48h to 72h of the larval development, it was concluded that the most critical period for the feeding interruption was on the middle of the PMRG, i.e., at 60h of the larval development. From this result, we tried to cautiously study different periods of feeding interruptions starting at 60h of larval development, in order to gather data on the development of this species when submitted to a condition of lack of feeding resources during different periods of time. With such data, we analyzed the consequences of starvation intervals on that critical period of the larval development.<br>Mestre
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Rech, Karine Cristiane. "Desenvolvimento da criação de larvas de Chironomus sp. (Diptera) e Branchiura sowerbyi (Annelida) para alimentação de peixes de água doce." Florianópolis, 2011. http://repositorio.ufsc.br/xmlui/handle/123456789/95023.
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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Programa de Pós-Graduação em Aquicultura, Florianópolis, 2011<br>Made available in DSpace on 2012-10-25T19:33:28Z (GMT). No. of bitstreams: 1
297511.pdf: 834440 bytes, checksum: 4f02562edbca6ca63105d1e8826c88b1 (MD5)<br>O presente trabalho tem por objetivo desenvolver métodos para a criação de larvas de Chironomus sp. (Diptera) e Branchiura sowerbyi (Annelida). Para o estabelecimento dos métodos, os organismos foram capturados em ambiente natural e transportados para o laboratório, onde diferentes condições foram testadas para avaliação do seu crescimento. Para Chironomus sp. foram testadas a temperatura, o tipo de sedimento e o tipo e o nível de alimentação, sendo que ao final do experimento foram determinadas a sobrevivência e a biomassa. Para Branchiura sowerbyi a influência da densidade e do tipo de alimentação sobre a ovoposição, eclosão de juvenis e sobrevivência dos reprodutores foram analisadas. Os resultados obtidos nos estudos realizados com Chironomus sp. revelaram que as melhores condições para a emergência e reprodução destes organismos ocorreram em sedimentos arenosos e sob temperatura de 25ºC. As larvas apresentaram melhor crescimento e sobrevivência quando alimentadas com ração para peixes ornamentais ou ração para frangos, independentemente do nível de alimentação utilizado. Os estudos com Branchiura sowerbyi mostraram melhor reprodução da espécie em condição de maior densidade e alimentação com ração comercial para frangos, para a qual foi registrada maior ovoposição e produção de jovens. Os resultados deste estudo podem ser usados para o futuro desenvolvimento de métodos de produção em massa dessas espécies para sua utilização como alimento vivo para peixes de água doce.
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Cunha, Andrea de Barros Pinto Viviani [UNESP]. "Variação temporal e sazonal de larvas de Simulium sp. no litoral norte do estado de São Paulo." Universidade Estadual Paulista (UNESP), 2004. http://hdl.handle.net/11449/144158.
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000220676.pdf: 296817 bytes, checksum: 98ed54efb6a5cca8c2edf821b857746c (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>O objetivo deste trabalho foi determinar a distribuição e a abundância de espécies do gênero Simulium em 5 córregos do litoral norte paulista, com diferentes níveis de poluição. Larvas de simulídeos e amostras de água de cada córrego foram coletadas quinzenalmente no verão e inverno/2001. Para a amostragem das larvas foram colocados substratos artificiais em triplicata. A cada intervalo de 15 dias as larvas foram retiradas com auxílio de pinças entomológicas, acondicionadas em frascos de vidro com álcool 70% e transportados ao laboratório de simulídeo de Caraguatatuba SUCEN/SP e Oncocercose da FIOCRUZ/RJ para triagem, contagem e identificação. Nos locais da coleta foram obtidos valores de temperatura, oxigênio, condutividade, pH da água e vazão do córrego. No Laboratório de Ecologia Aquática/ UNESP-Rio Claro, as amostras de água foram analisadas, obtendo-se valores de nitrogênio total e dissolvido, N-amoniacal, N-nitrito, N-nitrato, ortofosfato, fósforo total e dissolvido. Pode-se observar que a poluição foi um fator determinante tanto para a distribuição como para a abundância das espécies. S. pertinax ocorreu em ambientes mais limpos, S. inaequale nos mais poluídos e S. incrustatum nos intermediários. A espécie predominante foi S. pertinax com 57,5% de presença total nos criadouros, S. inaequale com 42,1% e S. incrustatum com pouca representatividade, 0,4% de presença nas amostras. Além disso, nos ambientes não poluídos ou pouco poluídos a abundância de larvas foi maior do que nos ambientes mais poluídos<br>The aim of this work was to determine the distribution and abundance the species of Simulium: in 5 streams of the north coastal region of the state of São Paulo. Simulium larval and water samples were collected every 2 weeks in summer and winter/2001. The larval were collected on artificial substrates (triplicate) preserved in alcohol (70%) and after analysed quantitative and qualitative in the laboratories of SUCEN in the municipality of Caraguatatuba/SP and in the Laboratório de Simulídeo e Oncocercose da FIOCRUZ/RJ. From the streams the values of temperature, dissolved oxygen, conductivity, pH and stream discharge were measured. The contents of total nitrogen and dissolved nitrogen, ammoniacal nitrogen, nitrate, nitrite, orthophosphate, dissolved phosphorus and total phosphorus were determined in the Laboratório de Ecologia Aquática/ UNESP-Rio Claro. The level of pollution has great influence in the distribution and abundance of the species. S. pertinax was more abundant in streams without or with low levels of pollution, S. inaequale in streams more polluted and S. incrustatum in intermediary levels of pollution. S. pertinax was the species more abundant with 57.5% of presence in the samples, the second more abundant was S. inaequale with 42.1% of presence and S. incrustatum was rare with 0.4% of presence. Ad to that, in no polluted or lower polluted environments, the abundance of larval was higher than that in more polluted environments
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Cunha, Andrea de Barros Pinto Viviani. "Variação temporal e sazonal de larvas de Simulium sp. no litoral norte do estado de São Paulo /." Jaboticabal, 2004. http://hdl.handle.net/11449/144158.
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Orientador: Antonio Fernando Monteiro Camargo<br>Banca: Ana Eliza Baccarin Leonardo<br>Banca: Carlos José Pereira da Cunha de Araújo Coutinho<br>Resumo: O objetivo deste trabalho foi determinar a distribuição e a abundância de espécies do gênero Simulium em 5 córregos do litoral norte paulista, com diferentes níveis de poluição. Larvas de simulídeos e amostras de água de cada córrego foram coletadas quinzenalmente no verão e inverno/2001. Para a amostragem das larvas foram colocados substratos artificiais em triplicata. A cada intervalo de 15 dias as larvas foram retiradas com auxílio de pinças entomológicas, acondicionadas em frascos de vidro com álcool 70% e transportados ao laboratório de simulídeo de Caraguatatuba SUCEN/SP e Oncocercose da FIOCRUZ/RJ para triagem, contagem e identificação. Nos locais da coleta foram obtidos valores de temperatura, oxigênio, condutividade, pH da água e vazão do córrego. No Laboratório de Ecologia Aquática/ UNESP-Rio Claro, as amostras de água foram analisadas, obtendo-se valores de nitrogênio total e dissolvido, N-amoniacal, N-nitrito, N-nitrato, ortofosfato, fósforo total e dissolvido. Pode-se observar que a poluição foi um fator determinante tanto para a distribuição como para a abundância das espécies. S. pertinax ocorreu em ambientes mais limpos, S. inaequale nos mais poluídos e S. incrustatum nos intermediários. A espécie predominante foi S. pertinax com 57,5% de presença total nos criadouros, S. inaequale com 42,1% e S. incrustatum com pouca representatividade, 0,4% de presença nas amostras. Além disso, nos ambientes não poluídos ou pouco poluídos a abundância de larvas foi maior do que nos ambientes mais poluídos<br>Abstract: The aim of this work was to determine the distribution and abundance the species of Simulium: in 5 streams of the north coastal region of the state of São Paulo. Simulium larval and water samples were collected every 2 weeks in summer and winter/2001. The larval were collected on artificial substrates (triplicate) preserved in alcohol (70%) and after analysed quantitative and qualitative in the laboratories of SUCEN in the municipality of Caraguatatuba/SP and in the Laboratório de Simulídeo e Oncocercose da FIOCRUZ/RJ. From the streams the values of temperature, dissolved oxygen, conductivity, pH and stream discharge were measured. The contents of total nitrogen and dissolved nitrogen, ammoniacal nitrogen, nitrate, nitrite, orthophosphate, dissolved phosphorus and total phosphorus were determined in the Laboratório de Ecologia Aquática/ UNESP-Rio Claro. The level of pollution has great influence in the distribution and abundance of the species. S. pertinax was more abundant in streams without or with low levels of pollution, S. inaequale in streams more polluted and S. incrustatum in intermediary levels of pollution. S. pertinax was the species more abundant with 57.5% of presence in the samples, the second more abundant was S. inaequale with 42.1% of presence and S. incrustatum was rare with 0.4% of presence. Ad to that, in no polluted or lower polluted environments, the abundance of larval was higher than that in more polluted environments<br>Mestre
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Corrêa, Leonardo Freitas [UNESP]. "Aspectos semioquímicos e visuais no comportamento de ovipostura em Chrysomya Megacephala (Fabricius) (Diptera: Calliphoridae)." Universidade Estadual Paulista (UNESP), 2013. http://hdl.handle.net/11449/108744.
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000766949.pdf: 736315 bytes, checksum: 4af4795500f88abf0b7e64ee251690de (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>A utilização de substratos de oviposição discretos e efêmeros representa um desafio ímpar para as fêmeas de califorídeos, que necessitam maximizar os benefícios obtidos pela agregação de imaturos e minimizar os efeitos adversos da competição intra ou interespecífica por recursos, de modo a assegurar o crescimento e desenvolvimento de sua progênie. Semioquímicos, substâncias químicas mediadoras de interações entre organismos, presentes nos ovos podem influenciar na escolha do sítio de oviposição por outras fêmeas, atuando como estimulantes. O presente estudo buscou elucidar alguns aspectos da influência da presença de agregados de ovos no comportamento de oviposição de Chrysomya megacephala. Para isto, foi realizada uma série de experimentos laboratoriais que demonstraram que: (1) a presença de ovos frescos não altera o tempo necessário para o início de novas oviposturas; (2) a presença de ovos frescos anula a preferência por um tipo particular de substrato de oviposição; (3) os estímulos à ovipostura não atuam de maneira interespecífica; (4) extratos de ovos frescos não exercem influência na ovipostura de outros indivíduos; (5) ovos próximos ao momento de eclosão larval não exercem influência no comportamento de ovipostura de outras fêmeas; (6) a disparidade temporal na ovipostura possui consequências deletérias para a prole. Os resultados obtidos auxiliam na melhor compreensão do processo de ovipostura agregada em C. megacephala e de seus possíveis efeitos na dinâmica populacional da espécie<br>The use of ephemeral and discrete oviposition substrates represents a unique challenge for calliphorid females, which need to maximize the benefits obtained by the aggregation of immatures and minimize the adverse effects of intra and interspecific competition for resources, to ensure the growth and development of their progeny. Semiochemicals, chemicals that mediate interactions between organisms, when present in eggs may influence the choice of oviposition site by other females, acting as stimulants. This work aimed to elucidate some aspects of the influence of egg batch presence in Chrysomya megacephala oviposition behavior. A series of laboratory experiments was held and showed that (1) fresh eggs presence do not change the time needed to start new ovipositions; (2) fresh eggs presence annul the preference for a particular oviposition substrate; (3) the stimuli for oviposition do not operate in an interspecific manner, (4) extracts of fresh eggs do not exert influence on oviposition of other individuals; (5) eggs near larvae time of hatching do not exert influence on the oviposition behavior of other females; (6) the temporal disparity in oviposition has deleterious consequences for the offspring. These results assist a better understanding in the aggregative oviposition behavior of C. megacephala and of its possible consequences for the population dynamics of this species
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Corrêa, Leonardo Freitas. "Aspectos semioquímicos e visuais no comportamento de ovipostura em Chrysomya Megacephala (Fabricius) (Diptera: Calliphoridae) /." Rio Claro, 2013. http://hdl.handle.net/11449/108744.
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Orientador: Claudio José Von Zuben<br>Banca: Aricio Xavier Linhares<br>Banca: Wesley Augusto Conde Godoy<br>Resumo: A utilização de substratos de oviposição discretos e efêmeros representa um desafio ímpar para as fêmeas de califorídeos, que necessitam maximizar os benefícios obtidos pela agregação de imaturos e minimizar os efeitos adversos da competição intra ou interespecífica por recursos, de modo a assegurar o crescimento e desenvolvimento de sua progênie. Semioquímicos, substâncias químicas mediadoras de interações entre organismos, presentes nos ovos podem influenciar na escolha do sítio de oviposição por outras fêmeas, atuando como estimulantes. O presente estudo buscou elucidar alguns aspectos da influência da presença de agregados de ovos no comportamento de oviposição de Chrysomya megacephala. Para isto, foi realizada uma série de experimentos laboratoriais que demonstraram que: (1) a presença de ovos frescos não altera o tempo necessário para o início de novas oviposturas; (2) a presença de ovos frescos anula a preferência por um tipo particular de substrato de oviposição; (3) os estímulos à ovipostura não atuam de maneira interespecífica; (4) extratos de ovos frescos não exercem influência na ovipostura de outros indivíduos; (5) ovos próximos ao momento de eclosão larval não exercem influência no comportamento de ovipostura de outras fêmeas; (6) a disparidade temporal na ovipostura possui consequências deletérias para a prole. Os resultados obtidos auxiliam na melhor compreensão do processo de ovipostura agregada em C. megacephala e de seus possíveis efeitos na dinâmica populacional da espécie<br>Abstract: The use of ephemeral and discrete oviposition substrates represents a unique challenge for calliphorid females, which need to maximize the benefits obtained by the aggregation of immatures and minimize the adverse effects of intra and interspecific competition for resources, to ensure the growth and development of their progeny. Semiochemicals, chemicals that mediate interactions between organisms, when present in eggs may influence the choice of oviposition site by other females, acting as stimulants. This work aimed to elucidate some aspects of the influence of egg batch presence in Chrysomya megacephala oviposition behavior. A series of laboratory experiments was held and showed that (1) fresh eggs presence do not change the time needed to start new ovipositions; (2) fresh eggs presence annul the preference for a particular oviposition substrate; (3) the stimuli for oviposition do not operate in an interspecific manner, (4) extracts of fresh eggs do not exert influence on oviposition of other individuals; (5) eggs near larvae time of hatching do not exert influence on the oviposition behavior of other females; (6) the temporal disparity in oviposition has deleterious consequences for the offspring. These results assist a better understanding in the aggregative oviposition behavior of C. megacephala and of its possible consequences for the population dynamics of this species<br>Mestre
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Gomes, Guilherme [UNESP]. "Processos auto-organizados: efeitos de substâncias químicas que agem no sistema nervoso sobre o desenvolvimento e padrão de dispersão larval pós-alimentar de dípteros (Calliphoridae e Muscidae)." Universidade Estadual Paulista (UNESP), 2006. http://hdl.handle.net/11449/99538.
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gomes_g_me_rcla.pdf: 2270133 bytes, checksum: d4e2f6bb8bc021e8025a823eb3f7a791 (MD5)<br>Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)<br>A ordem Diptera desperta grande interesse nos estudos científicos devido à importância agrícola, sanitária, veterinária e forense, dependendo da espécie em estudo. A espécie Chrysomya megacephala (Fabricius) foi introduzida há cerca de 30 anos no Brasil e é de considerável importância médico-sanitária, além de poder ser utilizada em estudos forenses, na estimativa de intervalo pós-morte (IPM) em humanos. A espécie Musca domestica (Linnaeus) tem distribuição cosmopolita e é bastante comum no ambiente urbano e pode também transportar formas infectantes de muitas doenças. Nessas moscas, após o desenvolvimento dos imaturos em substratos discretos e efêmeros, as larvas abandonam o substrato alimentar em busca de um sítio para pupação, processo chamado de dispersão larval pós-alimentar. No entanto, em ambiente natural, tanto a fonte alimentar como o substrato de pupação podem estar contaminados com substâncias químicas, sendo que algumas destas podem ser de interesse forense ou ser aplicadas no controle de pragas. Assim, o principal objetivo do presente trabalho é procurar dar contribuição a um melhor conhecimento dos efeitos do ansiolítico Diazepam [Diazepam NQ® 10mg] sobre o desenvolvimento larval e comportamento de dispersão larval e do inseticida Fipronil [Regent 800 WG®] sobre a dispersão pós-alimentar das larvas de duas espécies de moscas (C. megacephala e M. domestica). Na análise do desenvolvimento larval, pôde-se observar que a presença de Diazepam no substrato alimentar aumenta o tempo de desenvolvimento larval, retardando o ganho de massa por tempo nas duas espécies estudadas, quando se compara ao grupo controle. Já o comportamento de dispersão larval foi alterado na presença de Fipronil ou de Diazepam, em relação ao controle, sendo que a profundidade de enterramento e a distância das pupas do centro de irradiação...<br>Some species of Diptera have a great medical and veterinary importance, acting as vectors of many diseases, addiction of having a considerable agricultural, commercial and ecological importance and other ones having forensic importance. Flies utilize discrete and ephemeral breeding sites for larval nutrition. After the exhaustion of food, larvae begin dispersing in search of sites to pupate or to additional food sources, a process referred as post feeding larval dispersal. However, in natural environments these breeding or feeding sites can be contaminated with chemical substances. Some of these substances can be of forensic interest or be applied in pest control. In the present study, the main objective was to investigate the effect of Diazepam® [Diazepam NQ® 10mg] and Fipronil® [Regent 800 WG®] on immature stages of Chrysomya megacephala (Diptera: Calliphoridae) and Musca domestica (Diptera: Muscidae). The larvae were reared on artificial diet and rabbit liver on which different dosages of Diazepam were administrated in order to study the effects of this drug on the development and post feeding larval dispersal of the two species. Different dosages of the insecticide Fipronil were disposed in circular arena used as pupation substrate to investigate the effects on post feeding larval dispersal. The results showed that time required for larval development were significantly longer in colonies fed in contact with Diazepam than in the control ones, delaying the increase of mass per unit time in the two studied species. The larval dispersal behavior was modified in the presence of Fipronil and Diazepam, in comparison to arenas without the drugs. It was also observed that the burial depth and distance of the irradiation center were shorter than in the control groups for the two species... (Complete abstract click electronic address below)
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Castro, Luciana Camargo. "Caracterização hidrológica da microbacia do Lajeado dos Fragosos (oeste do Estado de Santa Catarina) e os efeitos do despejo de dejetos animais e resíduos domésticos sobre a população de larvas do borrachudo (Diptera: simuliidae)." Florianópolis, SC, 1999. http://repositorio.ufsc.br/xmlui/handle/123456789/80816.
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Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias.<br>Made available in DSpace on 2012-10-18T19:37:01Z (GMT). No. of bitstreams: 0<br>A prosperidade sócio-econômica alcançada pelo oeste do Estado de Santa Catarina é notória nas últimas três décadas, porém o uso inadequado do solo, a retirada da cobertura vegetal e a exploração intensiva da atividade agropecuária colaboraram e colaboram para a degradação ambiental que a região demonstra, atualmente. Este quadro é agravado ainda mais pela presença desconfortável do inseto borrachudo (Simulium sp.), um díptero, cuja fêmea é hematófoga e que provoca sérios danos, através de suas picadas, aos animais e aos produtores. O estudo da influência dos níveis de matéria orgânica sobre a população de imaturos de simulídeos foi o tema abordado nesse trabalho, bem como a conseqüência de tal desequilíbrio ambiental em relação à população local rural.
Books on the topic "Dipterous larvae"
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Trichomycete fungi living in the guts of Costa Rican phytotelm larvae and other lentic dipterans. 1994.
Find full textBook chapters on the topic "Dipterous larvae"
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Frey, David G. "Littoral and offshore communities of diatoms, cladocerans and dipterous larvae, and their interpretation in paleolimnology." In Paleolimnology and the Reconstruction of Ancient Environments. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-2655-4_7.
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Assis, Lorraine Caroline Ferreira de, Paula Vitória Bido Gellen, Guilherme Romano Scartezini, and Richard Presley Silva Lima Brasil. "Orofacial Myiasis Associated With Squamous Cell Carcinoma: A Case Report." In Collection of International Topics in Health Science- V1. Seven Editora, 2023. http://dx.doi.org/10.56238/colleinternhealthscienv1-113.
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Myiasis is a parasitic infestation in vertebrate animals caused by dipterous fly larvae that feed on living or necrotic tissue of their host. It is considered a rare pathology that is related to local, systemic and environmental predisposing factors. Few cases of oral myiasis related to squamous cell carcinoma (SCC) have been reported in the literature. Thus, it can be said that the frequency of this binomial is relatively low or underreported. Objective and case report: The present work aims to report the case of a 68-year-old patient, with psychiatric disorders, in a situation of abandonment, affected by orofacial myiasis associated with SCC. Furthermore, we discuss the diagnosis and treatment considered most appropriate. Discussion: The involvement of myiasis, in advanced stages, highlights a tissue destruction that can lead to severe functional sequelae, as in the reported case, which showed destruction of the lower and middle third of the right hemiface, leading to exposure of the oral cavity and compromising chewing and phonation, in addition to aesthetics. The association of myiasis with SCC increases the severity of both conditions by accelerating the process of destruction by larvae and increasing the severity of the carcinoma, a fact that was observed in the case reported. Treatment, even because of the rarity of the involvement, becomes challenging in these cases, since there are no well-established protocols in the literature, leading to the need for an accurate and individual assessment of the case to establish an appropriate therapy. Conclusion: It is of utmost importance for health professionals to investigate any possible neoplastic lesion associated with myiasis. Due to the importance of this binomial, it should become part of the treatment protocol to perform biopsy of the lesion and, consequently, anatomopathological analysis.
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A. Uchoa, Manoel, Morgana F. Wachter-Serapião, and Nádia Roque. "Feeding by Florivorous Flies (Tephritidae and Agromyzidae) in Flower Heads of Neotropical Asteraceae (Asterales) from Central Brazil." In The Wonders of Diptera - Characteristics, Diversity, and Significance for the World's Ecosystems. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96412.
Full textAbstract:
The four following Diptera families are peculiar because they are predominantly phytophagous: Cecidomyiidae, Agromyzidae, Lonchaeidae and Tephritidae; which is uncommon for dipterans. Tephritine’s larvae, depending on the species, consumes leaves, stems, flowers or roots of their host plants. Some tephritines feeds on flower heads of weed Asteraceae and can act in population suppression of invasive species in cultivated areas. In Mid-West of Brazil, we investigate Tephritinae and Agromyzinae flies in flower heads of Asteraceae species in three different phytophisiognomies in Dourados region, state of Mato Grosso do Sul. Here, 12 florivore fly species (9 Tephritinae, and 3 Melanagromyza spp., Agromizinae, Agromyzidae) are reported for the first time in Mid-West Brazil. We stablish the species of Asteraceae host for Tephritinae (Tephritidae) and for some species of Melanagromyza (Agromyzinae) in environments of Cerrado, Semideciduous Forest, and agroecosystem at Dourados-MS region. The inflorescences of Asteraceae species (± 500 capitula/species) were kept in containers to the emergence of the florivorous flies or their parasitoids. The adult insects after 48 hours were fixed in 80% ethanol for later identification. A total 36 species of Asteraceae were evaluated in the three regions of Dourados-MS, Brazil. Were obtained 120,031 flower heads of Astereceae, emerging 2,698 adults of insects: 833 Tephritinae (Tephritidae), belonging to 7 genera and 9 species; 1,089 Melanagromyza spp. (Agromyzidae) and 776 parasitoids (Hymenoptera) from the tephritines and agromyzines. We found that some florivore fly species needs to be better studied to employ in suppression programs of invasive Asteraceae population in the Neotropical Region.
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A. Uchoa, Manoel, Anderson S. Fernandes, and Jimi N. Nakajima. "Diversity of Tephritidae and Agromyzidae (Diptera: Brachycera) in Flower Heads of Asteraceae in the Chaco." In The Wonders of Diptera - Characteristics, Diversity, and Significance for the World's Ecosystems. IntechOpen, 2021. http://dx.doi.org/10.5772/intechopen.96352.
Full textAbstract:
The Chaco is an international biome, connecting four countries: Paraguay (230,000 km2), Bolivia (90,000 km2), Argentina (520,000 km2), and Brazil (Mato Grosso do Sul state (MS), with around 9,000 km2 and in the middle of South America. Brazilian Chaco is restricted to Porto Murtinho region, MS. The daisies (Asteraceae) with near 24,000 species worldwide is characterized by herbs and shrubs that coevolved with several taxa of endophagous insects: dipterans Agromyzidae, Ceciidomyidae and Tephritidae; Coleoptera (Apionidae), Hemiptera (Miridae), Lepidoptera (Blastobasidae, Gelechiidae, Pterophoridae, Pyralidae, and Tortricidae) and the parasitoids of this endophagous insects, which found in the daisies’s flower heads ideal conditions for food, breeding site and shelter. The Neotropical florivorous flies are the Agromyzinae (Agromyzidae), and Tephritinae (Tephritidae), which in their larval stage feed on Asteraceae inflorescences. To report the species of florivore flies, their host plants and parasitoids in flower heads of Asteraceae from the Brazilian Chaco, we sampled inflorescences of 25 species (± 500 flower heads/species) that were kept in containers to the emergence of the florivorous flies or their parasitoids sampled in the three phytophysiognomies. The adult insects after 48 hours of their emergence were fixed in 80% ethanol for later identification. A total 25 species of Asteraceae were evaluated in the Brazilian Chaco, being collected 17,000 flower heads. Nine tribes of two Asteraceae subfamilies were sampled, from which 15 species of florivorous flies were recovered. We found 5 genera with 9 of Tephritinae (Tephritidae), 6 species of Melanagromyza (Agromyzinae, Agromyzidae), and 104 parasitoids (Hymenoptera) of the florivorous flies.
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White-Cooper, Helen, and David Glover. "Regulation of the cell cycle during Drosophiladeveloptnent." In Cell Cycle Control. Oxford University PressOxford, 1995. http://dx.doi.org/10.1093/oso/9780199634118.003.0010.
Full textAbstract:
Abstract It is perhaps surprising that relatively little is known about the regulation of the cell cycle during development, particularly as many of the organisms now used to study the cell cycle were originally the focus of studies of both cell division and development in the late nineteenth century. The classical studies that defined mitosis and its phases, together with the cyclical behaviour of chromosomes and centrosomes, originated from observations made upon developing embryos of a variety of organisms. The nineteenth century view of the cell cycle was one of alternating periods of cell division and a vegetative state. Not until the 1950s did the studies of Howard and Pelc (1) define a discrete period of DNA synthesis (S phase) within this vegetative phase, thus leading to the archetypal view of the cell cycle in which mitosis (M) is separated from S by two gap phases Gl and G2. There are, however, many variations on this theme that are particularly evident during development. Many embryos undertake a series of rapid cell cycles during their early development driven by maternally provided proteins. The Drosophilaembryo begins its existence as a syncytium that becomes populated with several thousand nuclei as a result of 13 extremely rapid rounds of synchronous mitosis at approximately 10 min intervals. These mitoses are separated by periods of DNA synthesis without intervening gap phases. A G2 phase is introduced into the cell cycle only after individual nuclei have become incorporated into cells during division cycle 14. A Gl phase is not introduced into the Drosophilacell cycle until the seventeenth division, and only then do the cells of the embryo undertake ‘conventional’ cell cycles. These occur in the CNS and imaginal tissues, which continue to proliferate throughout larval and pupal development. In most other tissues the cell cycle is far from conventional, since Drosophila,in common with other dipterans, has many tissues whose cells undergo endoreduplication cycles.
Conference papers on the topic "Dipterous larvae"
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Akbarova, M. K., F. D. Akramova, and D. А. Azimov. "HELMINTH LARVAE INFECTION IN COLEOPTERANS AND DIPTERANS IN THE TASHKENT OASIS." In THEORY AND PRACTICE OF PARASITIC DISEASE CONTROL. VNIIP – FSC VIEV, 2025. https://doi.org/10.31016/978-5-6053355-1-1.2025.26.41-45.
Full textAbstract:
In the studied area of the Tashkent oasis, 9 helminth larvae species belonging to cestodes (Echinolepis carioca and Choanotaenia infundibulum) and nematodes (Spirura rytipleurites, Spirura talpae, Gongylonema neoplasticum, Gongylonema pulchrum, Dipetalonema evansi, Dirofilaria immitis, Setaria labiatopapillosa) were identified. The research material was insects (Coleoptera and Diptera), and their infection with helminth larvae that parasitized vertebrates in the Tashkent oasis. The insects were collected and studied in the Akhangaran, Bostonliq, Yuqorichirchiq, Parkent, Zangiota, and Chinaz Districts and the city of Angren in spring, summer and autumn 2024. Three hundred and fifty specimens of Coleoptera (8 species) and 200 specimens of Diptera (2 species) were collected and studied to detect helminth larvae according to the common method. It was established that the occurrence of individual species of cestode and nematode larvae varied significantly in the insects. The prevalence of individual insect species ranged 1.85 to 7.14%, with the infection intensity of 3 to 15 specimens of larvae. Helminth larvae were found in beetles (Tenebrionidae, Scarabaeidae) and dipterans (Culicidae) in the Tashkent oasis. The most common species was Spirura talpae, and the least common was Echinolepis carioca.