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Falsa broca aumenta disseminação de Beauveria bassiana em populações de campo da broca-do-rizoma da bananeira. Repositório Alice
PAULI, G.; LOPES, R. B.; ALVES, S. B.; DAMATTO JUNIOR, E. R.; MASCARIN, G. M..
A transmissão horizontal de fungos entomopatogênicos tem papel importante na epizootiologia, pois está diretamente associada à disseminação do agente causal da doença de insetos. Em hospedeiros que apresentam restrita mobilidade, a presença de pragas secundárias no agroecossistema pode ajudar na formação de focos secundários da doença e, com isso, aumentar a mortalidade das pragaschave. Para tanto, a disseminação de Beauveria bassiana, introduzida inoculativamente através de iscas tipo telha, foi avaliada em um bananal infestado por Cosmopolites sordidus (Piracicaba) e outro por C. sordidus e Metamasius hemipterus (Botucatu). Constatou-se que, em Piracicaba, não foram capturados insetos infectados na testemunha, sendo os índices de infecção nas parcelas...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Cosmopolites sordidus; Metamasius hemipterus; Transmissão horizontal; Epizootiologia; Horizontal transmission; Epizootiology; Banana; Beauveria bassiana; Fungo; Epidemiologia.
Ano: 2011 URL: http://www.alice.cnptia.embrapa.br/handle/doc/916209
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Is horizontal transmission of the Ostreid herpesvirus OsHV-1 in Crassostrea gigas affected by unselected or selected survival status in adults to juveniles? ArchiMer
Degremont, Lionel; Guyader, Tanguy; Tourbiez, Delphine; Pepin, Jean-francois.
Massive mortality outbreaks, mostly affecting spat Crassostrea gigas, have been reported in France since 2008. Disease investigations revealed that most of the mortality events are related to the detection of the Ostreid herpesvirus 1 (OsHV-1 μVar). Meanwhile, selection to improve the survival in juvenile C. gigas has been successfully implemented in this context and selected oysters were found disease-resistant to OsHV-1 infection. This paper reports the first investigation of the horizontal transmission of the disease throughout cohabitation trials within batch and between batches using unselected and selected oysters for their higher survival. Two batches, unselected (AC) and selected (AR), were produced in February 2009 and deployed in the field in...
Tipo: Text Palavras-chave: Crassostrea gigas; Disease resistance; Ostreid herpesvirus OsHV-1; Horizontal transmission; Pacific oyster.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00142/25310/23383.pdf
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Mortality associated with OsHV-1 in spat Crassostrea gigas: role of wild-caught spat in the horizontal transmission of the disease ArchiMer
Degremont, Lionel; Benabdelmouna, Abdellah.
The French oyster production of Crassostrea gigas is based on two sources of spat: wild-caught (WC) and hatchery-produced (HP). Massive mortality related to the ostreid herpesvirus type 1 (OsHV-1) has affected both sources in France since 2008. We investigated the mortality in juvenile C. gigas due to the horizontal transmission of OsHV-1 within (separated condition) and between (mixed condition) the two spat sources in three environments from April to June 2010. In the separated condition, no mortality was observed in the HP batches, while the WC batches experienced moderate to high mortality (40–80 %). In contrast, the WC and HP batches experienced high mortality in all tested environments for the mixed condition. At the beginning of the trial, the HP...
Tipo: Text Palavras-chave: Crassostrea gigas; Wild-caught; Hatchery-produced; Spat; Mortality; Horizontal transmission; Ostreid herpesvirus OsHV-1.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00188/29921/28387.pdf
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Wolbachia in guilds of Anastrepha fruit flies (Tephritidae) and parasitoid wasps (Braconidae) Genet. Mol. Biol.
Mascarenhas,Rodrigo O; Prezotto,Leandro F; Perondini,André Luiz P; Marino,Celso Luiz; Selivon,Denise.
Abstract The endosymbiont Wolbachia is efficiently transmitted from females to their progenies, but horizontal transmission between different taxa is also known to occur. Aiming to determine if horizontal transmission might have occurred between Anastrepha fruit flies and associated braconid wasps, infection by Wolbachia was screened by amplification of a fragment of the wsp gene. Eight species of the genus Anastrepha were analyzed, from which six species of associated parasitoid wasps were recovered. The endosymbiont was found in seven Anastrepha species and in five species of braconids. The WSP Typing methodology detected eight wsp alleles belonging to Wolbachia supergroup A. Three were already known and five were new ones, among which four were found to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bacteria; Fruit flies; Horizontal transmission; Wsp gene; Recombination.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000400600
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Wolbachia in two populations of Melittobia digitata Dahms (Hymenoptera: Eulophidae) Neotropical Entomology
Copeland,Claudia S.; Matthews,Robert W.; González,Jorge M.; Aluja,Martin; Sivinski,John.
We investigated two populations of Melittobia digitata Dahms, a gregarious parasitoid (primarily upon a wide range of solitary bees, wasps, and flies), in search of Wolbachia infection. The first population, from Xalapa, Mexico, was originally collected from and reared on Mexican fruit fly pupae, Anastrepha ludens Loew (Diptera: Tephritidae); the other, from Athens, Georgia, was collected from and reared on prepupae of mud dauber wasps, Trypoxylon politum Say (Hymenoptera: Crabronidae). PCR studies of the ITS2 region corroborated that both parasitoid populations were the same species; this potentially provides a useful molecular taxonomic profile since females of Melittobia species are superficially similar. Amplification of the Wolbachia surface protein...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Parasitoid; Chalcidoid; Endosymbiont; Horizontal transmission.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000600002
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