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| Registros recuperados: 102 | |
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| Zanuncio, José Cola; Universidade Federal de Viçosa; Matos Neto, Fausto da Costa; Universidade Federal de Viçosa; Tavares, Wagner de Souza; Universidade Federal de Viçosa; Cruz, Ivan; Embrapa Milho e Sorgo; Leite, Germano Leão Demolin; Universidade Federal de Minas Gerais; Serrão, José Eduardo; Universidade Federal de Viçosa. |
| The functional and numerical responses, reproductive characteristics, and viability of Campoletis flavicincta (Hymenoptera: Ichneumonidae) as well as the mortality after parasitism of the host Spodoptera frugiperda (Lepidoptera: Noctuidae) were analyzed in the laboratory. Campoletis flavicincta pairs were maintained until female death with 10, 20, 30, 40, or 50 caterpillars day-1 of the host S. frugiperda. A type III functional response curve was fitted to the average number of caterpillars supplied per day during the female wasp lifespan, as the explanatory variable. The handling time was 0.5940 ± 0.0875h, and the instantaneous search 0.0047 ± 0.0020 h-1. The functional response for each of the first five days of the host was a type III. The longevity at... |
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Palavras-chave: 5.01.02.02-8 fall armyworm; Functional response; Host density; Numerical response; Parasitism; Parasitoid age Entomologia Agrícola. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/15871 |
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| Medina, Edison Cardona; Santos, Marisa; Nodari, Rubens Onofre. |
| Escobedia grandiflora (L.f.) Kuntze is a wild hemiparasitic plant with orange roots. Little is known about the development of initial parasitism with the host, despite the significant value of roots for Central and South American communities. Therefore, this study aimed to characterize post-seminal structure and development of E. grandiflora in Pennisetum purpureum host. To analyze the structure and development of E. grandiflora, seedlings, stems and roots samples were processed and examined under light, confocal and scanning electron microscopy. Escobedia grandiflora seeds are composed of seed coat, perisperm, and embryo. Emergence of the radicle began eleven days after imbibition. Seedlings showed a root hair collar encircling the axis at the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Parasitism; Seed; Seedling survival; Orange roots; Haustorium.. |
| Ano: 2019 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/46667 |
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| CARDOSO,LUCAS; MARTINS,MAURÍCIO L.; GOLZIO,JÉSSICA E.S. DE AQUÍNO; BOMFIM,CAROLINA N.C.; OLIVEIRA,RICARDO L.M. DE; SANTOS,LEILANE B.G. DOS; LACERDA,ANA CAROLINA F.. |
| ABSTRACT Parasitic isopods of fishes usually show wide distribution and low host specificity. This study investigated the occurrence of gill parasites in 120 specimens of spotted goatfish Pseudupeneus maculatus, marine fish of great economic importance for fishery community. The fish were captured monthly in the Coast of Pernambuco State, Northeast Brazil, between October 2012 and September 2013. Eleven isopods were found and identified as Rocinela signata. We observed lower infections in the gills of P. maculatus (prevalence 8.3%, mean intensity 1.6±0.3 and mean abundance 0.1±0.3) when compared to other studies of different host fishes from geographically close locations. This parasite has been reported from a wide variety of fish species, not only in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coast of Pernambuco; Crustacean; Marine fish; Parasitism. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000502075 |
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| Mourão,Ana P. M.; Panizzi,Antônio R.. |
| The Neotropical brown stink bug, Euschistus heros (Fabr.), was collected on sunflower [Helianthus annuus (L.)], soybean [Glycine max (L.) Merrill], star bristle [Acanthospermum hispidum (DC.)], and under fallen leaves of mango tree [Mangifera indica (L.)] and privet (Ligustrum lucidum Ait.), during one year, to evaluate the diapause incidence and the occurrence of different seasonal morphs. The majority of the insects (ca. 90%) with mature reproductive organs was observed during the summer (December-March), when E. heros was found on soybean or on sunflower; in the beginning of autumn, most insects (87%) showed immature reproductive organs, and they were found on star bristle and under fallen leaves. Bugs with mature reproductive organs had more developed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Insecta; Neotropical brown stink bug; Reproductive organs; Seasonal morphs; Diapause; Parasitism. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0301-80592000000200002 |
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| Tavela,A.O.; Carretta Junior,M.; Oliveira,A.R.; Carneiro,F.T.; Silva,V.H.D.; Braga,F.R.; Peixoto,J.V.; Carvalho,G.D.; Araújo,J.V.; Paula,T.A.R.. |
| O trematodeo digenético Paratanaisia bragai é descrito como parasito dos túbulos coletores renais e ureteres de aves. Esse helminto é usualmente pouco patogênico para a maioria dos hospedeiros; porém, em altas cargas parasitárias e em animais mais suscetíveis, pode causar sérios danos que resultam em apatia, perda de peso, desidratação e até mesmo a morte. O presente trabalho objetivou relatar pela primeira vez o trematoide P. bragai parasitando os rins de um passeriforme da espécie Estrilda astrild, conhecido popularmente como bico-de-lacre, de distribuição cosmopolita. A partir da análise histopatológica dos rins da ave, observou-se a presença dos vermes adultos e de ovos, grande dilatação dos ductos coletores renais, destruição e achatamento das células... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Kidney; Trematode; Parasitism; Passeriformes. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352014000401276 |
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| Brener,B.; Tortelly,R.; Muniz-Pereira,L.C.; Pinto,R.M.. |
| Relata-se o primeiro caso de infecção de perus, Meleagris gallopavo, por Cheilospirura hamulosa no Brasil, com base no achado de três espécimes fêmeas de C. hamulosa, inseridos na submucosa da moela de um peru, retirado de um lote de 15 aves, provenientes de criadouros domésticos no estado de Minas Gerais. A ocorrência foi de 6,7%. A ave parasitada não apresentava sinais clínicos. As lesões microscópicas da moela eram severas, caracterizando-se por intensos processos inflamatórios crônicos e difusos, com infiltrados mistos de granulócitos, estendendo-se à mucosa e às camadas musculares. Nessa área, foram observados fragmentos dos parasitos e perfuração da mucosa, com destruição das camadas musculares. |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Turkey; Pathology; Parasitism; Meleagris gallopavo; Cheilospirura hamulosa. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352006000200021 |
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| Santos,R.S.; Roumbedakis,K.; Marengoni,N.G.; Takahashi,H.K.; Pimenta,F.D.A.; Melo,C.M.R.; Martins,M.L.. |
| The occurrence of proteocephalid cestodes in tucunaré Cichla sp., captured monthly, between August 2000 and August 2001, in Paraná River, Presidente Epitácio, SP, was evaluated. From 128 specimens, 71 (55.6%) were parasitized by Proteocephalus macrophallus (Diesing, 1850) and/or P. microscopicus (Woodland, 1935). Total mean abundance and intensity were 157.08 and 223.41, respectively. The highest prevalence (90%) mean abundance (1,122.4) and intensity indexes (1,247.11) occurred in February 2001, while in September 2000 there were no observed animals infected by cestodes. No relationship between the sex of the host and parasitological indexes was found. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Tucunare; Parasitism; Proteocephalidae; Paraná River. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352011000300008 |
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| Ramos,D.G.S.; Santos,A.R.G.L.O.; Freitas,L.C.; Correa,S.H.R.; Kempe,G.V.; Morgado,T.O.; Aguiar,D.M.; Wolf,R.W.; Rossi,R.V.; Sinkoc,A.L.; Pacheco,R.C.. |
| ABSTRACT The population of wild animals is regulated by many biotic and abiotic factors, and parasites are a biotic factor that affects the dynamic and density of host populations. From 2002 to 2014, 62 wild animals from the biomes Pantanal, Amazon, and "Cerrado" (or Savanna), which died in attendance in the veterinary hospital or have been road-killed, underwent necropsy for parasitological examination. Overall, 36 species of parasites were identified from 24 host species. Among the parasites, the most prevalent order was Oxyurida (29.1%), followed by Strongylida (20.9%), Spirurida (19.4%), Ascaridida (16.2%), Pentastomida (3.2%), Echinostomida (3.2%), Gygantorhynchia (3.2%), Rhabditida (1.6%), Plagiorchiida (1.6%), and Monilimorfida (1.6%), especially... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Helminths; Parasitism; Amazon; Cerrado; Pantanal. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352016000300571 |
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| Damborenea,C.; Brusa,F.; Paola,A.. |
| Pomacea canaliculata is a common gastropod in freshwater habitats from Central and Northern Argentina, extending northwards into the Amazon basin. Several Platyhelminthes have been reported associated to P. canaliculata, sharing an intimate relationship with this gastropod host. The objectives of this study were to describe the symbiotic species assemblages associated to P. canaliculata in the study area, and to disclose differences among them. Samples were taken in three typical small streams and one artificial lentic lagoon, all connected with the Río de la Plata estuary. The 81.53% were infested with different symbiotic (sensu lato) species. Among the Platyhelminthes, the commensal Temnocephala iheringi Haswell, 1893 was highly prevalent in all samples,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Apple-snails; Platyhelminthes; Trematoda; Annelida; Hirudinea; Symbiosis; Commensalism; Parasitism. |
| Ano: 2006 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452006000300006 |
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| de Oliveira Pinheiro,Daniela; Conte,Hélio; Aparecida Gregório,Elisa. |
| Diatraea saccharalis, the main pest of sugarcane, has been controlled by Cotesia flavipes. Very little is known about the effect of parasitism on the host organs, including the midgut. The Lepidoptera midgut epithelium is composed of columnar, goblet, regenerative, and endocrine cells. Spherites have been described in columnar and regenerative cells of several Lepidoptera species, and presented a lot of functional meaning. We identified spherites in the midgut epithelial cells of non-parasitized D. saccharalis larvae analyzed the effect of parasitism on spherite morphology and distribution along the length of the midgut. Midgut fragments of both non-parasitized and parasitized larvae were processed for transmission electron microscopy. All the midgut... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Spherite; Epithelial cell; Ultrastructure; Lepidoptera; Parasitism. |
| Ano: 2008 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452008000100007 |
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| Lourenção,André Luiz; Costa,Valmir Antonio; Pereira,Lillian Silveira; Prado,Juliana Cardoso. |
| The parasitism of Bemisia tabaci (Genn.) biotype B nymphs on cotton plants was observed during a research on resistance of cotton genotypes to this whitefly. The experiment was set in a greenhouse at the Experimental Station of the Instituto Agronômico (IAC), in Campinas, São Paulo State, Brazil. Samples of the parasitized nymphs were collected and maintained in laboratory to monitor the parasitism and obtain the adult parasitoids. A total of 129 adult parasitoids were obtained, including one Encarsia inaron (Walker), 13 En. lutea (Masi), and 115 Eretmocerus mundus Mercet (Hymenoptera: Aphelinidae). This is the first report of Er. mundus in Brazil. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Parasitism; Silverleaf whitefly. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052014000200010 |
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| Mussury,Rosilda Mara; Fernandes,Wedson Desidério. |
| The occurrence of Diaretiella rapae parasitising Lipaphis erysimi and Brevicoryne brassicae in canola field (Brassica napus) was evaluated through two sample methods in Dourados-MS. The methods, used weekly, were: entomologic sweep net and plants sacking. The aphids population was observed from initial to the senescence plant development. Aphids were more abundant during the flowering phase, and they were usually located in the stems of the inflorescence and development fruits. In this phase the largest parasitism level for D. rapae (89,7%) occurred. The sample method with a sweep net captured significantly (t=4,484, P <= 0,01) more D. rapae while sacking method captured more parasitise aphids (t=2,199 with P <= 0,05) and active aphids (t=3,513, P... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Canola; Brassica napus; Diaretiella rapae; Parasitism; Lipaphis erysimi; Brevicoryne brassicae. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000100007 |
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| Registros recuperados: 102 | |
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