Base de dados : MEDLINE
Pesquisa : G08.686.784.480 [Categoria DeCS]
Referências encontradas : 8368 [refinar]
Mostrando: 1 .. 10   no formato [Detalhado]

página 1 de 837 ir para página                         

  1 / 8368 MEDLINE  
              next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29250744
[Au] Autor:Yadav P; Desireddy S; Kasinathan S; Bessière JM; Borges RM
[Ad] Endereço:Centre for Ecological Sciences, Indian Institute of Science, Bangalore, 560012, India.
[Ti] Título:History Matters: Oviposition Resource Acceptance in an Exploiter of a Nursery Pollination Mutualism.
[So] Source:J Chem Ecol;44(1):18-28, 2018 Jan.
[Is] ISSN:1573-1561
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:In the fig-fig wasp nursery pollination system, parasitic wasps, such as gallers and parasitoids that oviposit from the exterior into the fig syconium (globular, enclosed inflorescence) are expected to use a variety of chemical cues for successful location of their hidden hosts. Behavioral assays were performed with freshly eclosed naive galler wasps. Syconia with different oviposition histories, i.e. with or without prior oviposition, were presented to wasps in no-choice assays and the time taken to the first oviposition attempt was recorded. The wasps exhibited a preference for syconia previously exposed to conspecifics for oviposition over unexposed syconia. Additionally, syconia exposed to oviposition by heterospecific wasps were also preferred for oviposition over unexposed syconia indicating that wasps recognise and respond to interspecific cues. Wasps also aggregated for oviposition on syconia previously exposed to oviposition by conspecifics. We investigated chemical cues that wasps may employ in accepting an oviposition resource by analyzing syconial volatile profiles, chemical footprints left by wasps on syconia, and syconial surface hydrocarbons. The volatile profile of a syconium is influenced by the identity of wasps developing within and may be used to identify suitable host syconia at long range whereas close range preference seems to exploit wasp footprints that alter syconium surface hydrocarbon profiles. These cues act as indicators of the oviposition history of the syconium, thereby helping wasps in their oviposition decisions.
[Mh] Termos MeSH primário: Polinização/fisiologia
Vespas/fisiologia
[Mh] Termos MeSH secundário: Animais
Frutas/química
Frutas/metabolismo
Frutas/parasitologia
Oviposição/fisiologia
Plantas/química
Plantas/metabolismo
Plantas/parasitologia
Simbiose
Compostos Orgânicos Voláteis/química
Vespas/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Volatile Organic Compounds)
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180221
[Lr] Data última revisão:
180221
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171219
[St] Status:MEDLINE
[do] DOI:10.1007/s10886-017-0914-0


  2 / 8368 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29304052
[Au] Autor:Cifuentes-Arenas JC; de Goes A; de Miranda MP; Beattie GAC; Lopes SA
[Ad] Endereço:Departamento de Fitossanidade, Faculdade de Ciências Agrárias e Veterinárias, Universidade Estadual Paulista 'Júlio de Mesquita Filho', Jaboticabal, São Paulo, Brazil.
[Ti] Título:Citrus flush shoot ontogeny modulates biotic potential of Diaphorina citri.
[So] Source:PLoS One;13(1):e0190563, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:The biology and behaviour of the psyllid Diaphorina citri Kuwayama (Hemiptera: Sternorrhyncha: Liviidae), the major insect vector of bacteria associated with huanglongbing, have been extensively studied with respect to host preferences, thermal requirements, and responses to visual and chemical volatile stimuli. However, development of the psyllid in relation to the ontogeny of immature citrus flush growth has not been clearly defined or illustrated. Such information is important for determining the timing and frequency of measures used to minimize populations of the psyllid in orchards and spread of HLB. Our objective was to study how flush ontogeny influences the biotic potential of the psyllid. We divided citrus flush growth into six stages within four developmental phases: emergence (V1), development (V2 and V3), maturation (V4 and V5), and dormancy (V6). Diaphorina citri oviposition and nymph development were assessed on all flush stages in a temperature controlled room, and in a screen-house in which ambient temperatures varied. Our results show that biotic potential of Diaphorina citri is not a matter of the size or the age of the flushes (days after budbreak), but the developmental stage within its ontogeny. Females laid eggs on flush V1 to V5 only, with the time needed to commence oviposition increasing with the increasing in flush age. Stages V1, V2 and V3 were most suitable for oviposition, nymph survival and development, and adult emergence, which showed evidence of protandry. Flush shoots at emerging and developmental phases should be the focus of any chemical or biological control strategy to reduce the biotic potential of D. citri, to protect citrus tree from Liberibacter infection and to minimize HLB dissemination.
[Mh] Termos MeSH primário: Citrus/microbiologia
Hemípteros/fisiologia
[Mh] Termos MeSH secundário: Animais
Feminino
Insetos Vetores
Oviposição
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180106
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190563


  3 / 8368 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo SciELO Brasil
[PMID]:29236930
[Au] Autor:Marinho-E-Silva M; Sallum MAM; Rosa-Freitas MG; Lourenço-de-Oliveira R; Silva-do-Nascimento TF
[Ad] Endereço:Laboratório de Mosquitos Transmissores de Hematozoários, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz-Fiocruz, Rio de Janeiro, RJ, Brasil.
[Ti] Título:Anophelines species and the receptivity and vulnerability to malaria transmission in the Pantanal wetlands, Central Brazil.
[So] Source:Mem Inst Oswaldo Cruz;113(2):87-95, 2018 Feb.
[Is] ISSN:1678-8060
[Cp] País de publicação:Brazil
[La] Idioma:eng
[Ab] Resumo:BACKGROUND Studies on malaria vectors in the Pantanal biome, Central Brazil, were conducted more than half a century ago. OBJECTIVES To update anopheline records and assess receptivity and vulnerability to malaria transmission. METHODS Five-day anopheline collections were conducted bimonthly in Salobra, Mato Grosso do Sul state, for one year. Indoors, mosquitoes were collected from their resting places, while in open fields, they were captured using protected human-baited and horse-baited traps near the house and at the Miranda River margin, respectively. Hourly biting activity outdoors was also assessed. Secondary data were collected on the arrival of tourists, economic projects, and malaria cases. FINDINGS A total of 24,894 anophelines belonging to 13 species were caught. The main Brazilian malaria vector Anopheles darlingi was the predominant species, followed by An. triannulatus s.l. Hourly variation in anopheline biting showed three main peaks occurring at sunset, around midnight, and at sunrise, the first and last being the most prominent. The highest density of all species was recorded near the river margin and during the transition period between the rainy and early dry seasons. This coincides with the time of main influx of outsider workers and tourists, whose activities mostly occur in the open fields and frequently start before sunrise and last until sunset. Some of these individuals originate from neighbouring malaria-endemic countries and states, and are likely responsible for the recorded imported and introduced malaria cases. MAIN CONCLUSION Pantanal is a malaria-prone area in Brazil. Surveillance and anopheline control measures must be applied to avoid malaria re-emergence in the region.
[Mh] Termos MeSH primário: Anopheles/classificação
Mosquitos Vetores/classificação
Zonas Úmidas
[Mh] Termos MeSH secundário: Animais
Anopheles/parasitologia
Anopheles/fisiologia
Brasil
Feminino
Seres Humanos
Malária/transmissão
Mosquitos Vetores/parasitologia
Mosquitos Vetores/fisiologia
Oviposição
Estações do Ano
Especificidade da Espécie
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180215
[Lr] Data última revisão:
180215
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171214
[St] Status:MEDLINE


  4 / 8368 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29304084
[Au] Autor:Tanga CM; Khamis FM; Tonnang HEZ; Rwomushana I; Mosomtai G; Mohamed SA; Ekesi S
[Ad] Endereço:International Centre of Insect Physiology and Ecology (ICIPE), GPO, Nairobi, Kenya.
[Ti] Título:Risk assessment and spread of the potentially invasive Ceratitis rosa Karsch and Ceratitis quilicii De Meyer, Mwatawala & Virgilio sp. Nov. using life-cycle simulation models: Implications for phytosanitary measures and management.
[So] Source:PLoS One;13(1):e0189138, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Integrative taxonomy has resolved the species status of the potentially invasive Ceratitis rosa Karsch into two separate species with distinct ecological requirements: C. rosa "lowland type" and the newly described species Ceratitis quilicii De Meyer, Mwatawala & Virgilio sp. nov. "highland type". Both species are tephritid pests threatening the production of horticultural crops in Africa and beyond. Studies were carried out by constructing thermal reaction norms for each life stage of both species at constant and fluctuating temperatures. Non-linear functions were fitted to continuously model species development, mortality, longevity and oviposition to establish phenology models that were stochastically simulated to estimate the life table parameters of each species. For spatial analysis of pest risk, three generic risk indices were visualized using the advanced Insect Life Cycle Modeling software. The study revealed that the highest fecundity, intrinsic rate of natural increase and net reproductive rate for C. rosa and C. quilicii was at 25 and 30°C, respectively. The resulting model successfully fits the known distribution of C. rosa and C. quilicii in Africa and the two Indian Ocean islands of La Réunion and Mauritius. Globally, the model highlights the substantial invasion risk posed by C. rosa and C. quilicii to cropping regions in the Americas, Australia, India, China, Southeast Asia, Europe, and West and Central Africa. However, the proportion of the regions predicted to be climatically suitable for both pests is narrower for C. rosa in comparison with C. quilicii, suggesting that C. quilicii will be more tolerant to a wider range of climatic conditions than C. rosa. This implies that these pests are of significant concern to biosecurity agencies in the uninvaded regions. Therefore, these findings provide important information to enhance monitoring/surveillance and designing pest management strategies to limit the spread and reduce their impact in the invaded range.
[Mh] Termos MeSH primário: Produtos Agrícolas/parasitologia
Modelos Biológicos
Tephritidae/crescimento & desenvolvimento
[Mh] Termos MeSH secundário: Animais
Clima
Ecossistema
Feminino
Fertilidade
Espécies Introduzidas
Estágios do Ciclo de Vida
Longevidade
Masculino
Dinâmica não Linear
Oviposição
Controle de Pragas
Medição de Risco
Software
Especificidade da Espécie
Temperatura Ambiente
Tephritidae/patogenicidade
Tephritidae/fisiologia
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; VALIDATION STUDIES
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180210
[Lr] Data última revisão:
180210
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180106
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0189138


  5 / 8368 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29298318
[Au] Autor:Hu P; Li HL; Zhang HF; Luo QW; Guo XR; Wang GP; Li WZ; Yuan G
[Ad] Endereço:Department of Entomology, College of Plant Protection, Henan Agricultural University, Zhengzhou, Henan Province, China.
[Ti] Título:Experience-based mediation of feeding and oviposition behaviors in the cotton bollworm: Helicoverpa armigera (Lepidoptera: Noctuidae).
[So] Source:PLoS One;13(1):e0190401, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Experience is well known to affect sensory-guided behaviors in many herbivorous insects. Here, we investigated the effects of natural feeding experiences of Helicoverpa armigera larvae on subsequent preferences of larval approaching and feeding, as well as the effect of host-contacting experiences of mated females on subsequent ovipositional preference. The results show that the extent of experience-induced preference, expressed by statistical analysis, depended on the plant species paired with the experienced host plant. Larval feeding preference was much easier to be induced by natural feeding experience than larval approaching preference. Naïve larvae, reared on artificial diet, exhibited clear host-ranking order as follows: tobacco ≥ cotton > tomato > hot pepper. Feeding experiences on hot pepper and tobacco could always induce positive feeding preference, while those on cotton often induced negative effect, suggesting that the direction of host plant experience-induced preference is not related to innate feeding preference. Inexperienced female adults ranked tobacco as the most preferred ovipositional host plant, and this innate preference could be masked or weakened but could not be reversed by host-contacting experience after emergence.
[Mh] Termos MeSH primário: Comportamento Alimentar
Lepidópteros/fisiologia
Oviposição
[Mh] Termos MeSH secundário: Animais
Feminino
Larva/fisiologia
Lepidópteros/crescimento & desenvolvimento
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Em] Mês de entrada:1802
[Cu] Atualização por classe:180206
[Lr] Data última revisão:
180206
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180104
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0190401


  6 / 8368 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:29342168
[Au] Autor:Sanscrainte ND; Arimoto H; Waits CM; Li LY; Johnson D; Geden C; Becnel JJ; Estep AS
[Ad] Endereço:USDA/ARS Center for Medical, Agricultural, and Veterinary Entomology, Gainesville, Florida, United States of America.
[Ti] Título:Reduction in Musca domestica fecundity by dsRNA-mediated gene knockdown.
[So] Source:PLoS One;13(1):e0187353, 2018.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:House flies (Musca domestica) are worldwide agricultural pests with estimated control costs at $375 million annually in the U.S. Non-target effects and widespread resistance challenge the efficacy of traditional chemical control. Double stranded RNA (dsRNA) has been suggested as a biopesticide for M. domestica but a phenotypic response due to the induction of the RNAi pathway has not been demonstrated in adults. In this study female house flies were injected with dsRNA targeting actin-5C or ribosomal protein (RP) transcripts RPL26 and RPS6. Ovaries showed highly reduced provisioning and clutch reductions of 94-99% in RP dsRNA treated flies but not in actin-5C or GFP treated flies. Gene expression levels were significantly and specifically reduced in dsRNA injected groups but remained unchanged in the control dsGFP treated group. Furthermore, injections with an Aedes aegypti conspecific dsRNA designed against RPS6 did not impact fecundity, demonstrating species specificity of the RNAi response. Analysis of M. domestica tissues following RPS6 dsRNA injection showed significant reduction of transcript levels in the head, thorax, and abdomen but increased expression in ovarian tissues. This study demonstrates that exogenous dsRNA is specifically effective and has potential efficacy as a highly specific biocontrol intervention in adult house flies. Further work is required to develop effective methods for delivery of dsRNA to adult flies.
[Mh] Termos MeSH primário: Fertilidade/genética
Técnicas de Silenciamento de Genes
Moscas Domésticas/fisiologia
RNA de Cadeia Dupla/genética
[Mh] Termos MeSH secundário: Animais
Feminino
Proteínas de Fluorescência Verde/genética
Ovário/anatomia & histologia
Oviposição
Interferência de RNA
Reação em Cadeia da Polimerase em Tempo Real
[Pt] Tipo de publicação:JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T
[Nm] Nome de substância:
0 (RNA, Double-Stranded); 147336-22-9 (Green Fluorescent Proteins)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180129
[Lr] Data última revisão:
180129
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:180118
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0187353


  7 / 8368 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28449954
[Au] Autor:Wang F; Lu X; Guo F; Gong H; Zhang H; Zhou Y; Cao J; Zhou J
[Ad] Endereço:Key Laboratory of Animal Parasitology of Ministry of Agriculture, Shanghai Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Shanghai 200241, China.
[Ti] Título:The immunomodulatory protein RH36 is relating to blood-feeding success and oviposition in hard ticks.
[So] Source:Vet Parasitol;240:49-59, 2017 Jun 15.
[Is] ISSN:1873-2550
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:An immunomodulatory protein designated RH36 was identified in the tick Rhipicephalus haemaphysaloides. The cDNA sequence of RH36 has 844bp and encodes a deduced protein with a predicted molecular weight of 24kDa. Bioinformatics analysis indicated that RH36 presented a degree of similarity of 34.36% with the immunomodulatory protein p36 from the tick Dermacentor andersoni. The recombinant RH36 (rRH36) expressed in Sf9 insect cells suppressed the T-lymphocyte mitogen-driven in vitro proliferation of splenocytes and the expression of several cytokines such as IL-2, IL-12, and TNF-α. Furthermore, the proliferation of splenocytes isolated from rRH36-inoculated mice was significantly lower than that in control mice, suggesting that rRH36 could directly suppress immune responses in vivo. In addition, microarray analysis of splenocytes indicated that the expression of several immunomodulatory genes was downregulated by rRH36. The silencing of the RH36 gene by RNAi led to a 37.5% decrease in the tick attachment rate 24h after placement into the rabbit ears, whereas vaccination with RH36 caused a 53.06% decrease in the tick engorgement rate. Unexpectedly, RNAi induced a significant decrease in the oviposition rate, ovary weight at day 12 after engorgement, and egg-hatching rate. The effects of RH36 on blood feeding and oviposition were further confirmed by vaccination tests using the recombinant protein. These results indicate that RH36 is a novel member of immunosuppressant proteins and affects tick blood feeding and oviposition.
[Mh] Termos MeSH primário: Proteínas de Artrópodes/metabolismo
Dermacentor/fisiologia
Comportamento Alimentar/fisiologia
Regulação da Expressão Gênica/fisiologia
Oviposição/fisiologia
Rhipicephalus/fisiologia
[Mh] Termos MeSH secundário: Sequência de Aminoácidos
Animais
Proteínas de Artrópodes/genética
Sequência de Bases
Proliferação Celular
Feminino
Camundongos
Camundongos Endogâmicos BALB C
Oviposição/genética
RNA Mensageiro/genética
RNA Mensageiro/metabolismo
Coelhos
Glândulas Salivares/metabolismo
Baço/citologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Arthropod Proteins); 0 (RNA, Messenger)
[Em] Mês de entrada:1801
[Cu] Atualização por classe:180102
[Lr] Data última revisão:
180102
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170429
[St] Status:MEDLINE


  8 / 8368 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28456310
[Au] Autor:Zeng R; Yu X; Tan X; Ye S; Ding Z
[Ad] Endereço:College of Plant Protection, Hunan Agricultural University, Changsha 410128, China.
[Ti] Título:Deltamethrin affects the expression of voltage-gated calcium channel α1 subunits and the locomotion, egg-laying, foraging behavior of Caenorhabditis elegans.
[So] Source:Pestic Biochem Physiol;138:84-90, 2017 May.
[Is] ISSN:1095-9939
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Deltamethrin belongs to the class of synthetic pyrethroids, which are being widely used as insecticides in agricultural practices. Voltage-gated sodium channels (VGSCs) are the primary targets of these chemicals for toxicity to insects. Caenorhabditis elegans (C. elegans) does not have VGSCs but is susceptible to deltamethrin. Recent findings have suggested that pyrethroids can affect voltage-gated calcium channels (VGCCs). However, it remains elusive whether deltamethrin induces toxicity to C. elegans via modulating the activity of VGCCs. To identify the potential target of deltamethrin, we exposed C. elegans to different concentrations of deltamethrin and Ca channel blockers for different times, characterized the behavioral toxicity of deltamethrin on C. elegans, and determined the expression of egl-19, unc-2, and cca-1, which encode the α1-subunit of the L-, R/N/P/Q-, and T-type VGCC, respectively. We found that deltamethrin inhibited the locomotion, egg-laying and foraging ability of C. elegans in a concentration dependent manner. We also showed that body length of worms on agar plates containing 200mgL deltamethrin for 12h was not significantly different from controls, whereas the cholinesterase inhibitor carbofuran caused hypercontraction which is a characteristic of organophosphates and carbamates, suggesting that deltamethrin's mode of action is distinct from those nematicides. In addition, unc-2 was significantly up-regulated following 0.05mgL deltamethrin exposure for 24h; while egl-19 and cca-1 were significantly up-regulated following 5 and 50mgL deltamethrin exposure for 24h. Further tests of worms' sensitivity and expression of three α1-subunits of VGCC to Ca channel blockers indicate that deltamethrin may induce toxic behavior C. elegans via modulation of the expression of the α1-subunits of VGCC. This study provides insights into the linkage between deltamethrin-induced toxic behavior and the regulation of α1-subunits of VGCC in C. elegans.
[Mh] Termos MeSH primário: Caenorhabditis elegans/efeitos dos fármacos
Canais de Cálcio/metabolismo
Comportamento Alimentar/efeitos dos fármacos
Locomoção/efeitos dos fármacos
Nitrilos/farmacologia
Oviposição/efeitos dos fármacos
Piretrinas/farmacologia
[Mh] Termos MeSH secundário: Animais
Canais de Cálcio/genética
Regulação da Expressão Gênica/efeitos dos fármacos
Inseticidas/farmacologia
Subunidades Proteicas
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Calcium Channels); 0 (Insecticides); 0 (Nitriles); 0 (Protein Subunits); 0 (Pyrethrins); 2JTS8R821G (decamethrin)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171128
[Lr] Data última revisão:
171128
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170501
[St] Status:MEDLINE


  9 / 8368 MEDLINE  
              first record previous record next record last record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28981656
[Au] Autor:Wallingford AK; Cha DH; Linn CE; Wolfin MS; Loeb GM
[Ad] Endereço:Department of Entomology, Cornell University, 630 W. North St., Geneva, NY 14456.
[Ti] Título:Robust Manipulations of Pest Insect Behavior Using Repellents and Practical Application for Integrated Pest Management.
[So] Source:Environ Entomol;46(5):1041-1050, 2017 10 01.
[Is] ISSN:1938-2936
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In agricultural settings, examples of effective control strategies using repellent chemicals in integrated pest management (IPM) are relatively scarce compared to those using attractants. This may be partly due to a poor understanding of how repellents affect insect behavior once they are deployed. Here we attempt to identify potential hallmarks of repellent stimuli that are robust enough for practical use in the field. We explore the literature for success stories using repellents in IPM and we investigate the mechanisms of repellency for two chemical oviposition deterrents for controlling Drosophila suzukii Matsumura, a serious pest of small fruit crops. Drosophila suzukii causes injury by laying her eggs in ripening fruit and resulting larvae make fruit unmarketable. In caged choice tests, reduced oviposition was observed in red raspberry fruit treated with volatile 1-octen-3-ol and geosmin at two initial concentrations (10% and 1%) compared to untreated controls. We used video monitoring to observe fly behavior in these caged choice tests and investigate the mode of action for deterrence through the entire behavioral repertoire leading to oviposition. We observed fewer visitors and more time elapsed before flies first landed on 1-octen-3-ol-treated fruits than control fruits and concluded that this odor primarily inhibits behaviors that occur before D. suzukii comes in contact with a potential oviposition substrate (precontact). We observed some qualitative differences in precontact behavior of flies around geosmin-treated fruits; however, we concluded that this odor primarily inhibits behaviors that occur after D. suzukii comes in contact with treated fruits (postcontact). Field trials found reduced oviposition in red raspberry treated with 1-octen-3-ol and a combination of 1-octen-3-ol and geosmin, but no effect of geosmin alone. Recommendations for further study of repellents for practical use in the field are discussed.
[Mh] Termos MeSH primário: Controle de Insetos/métodos
Repelentes de Insetos/farmacologia
Naftóis/farmacologia
Octanóis/farmacologia
Oviposição/efeitos dos fármacos
[Mh] Termos MeSH secundário: Animais
Drosophila
Feminino
Rubus
[Pt] Tipo de publicação:EVALUATION STUDIES; JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S.
[Nm] Nome de substância:
0 (Insect Repellents); 0 (Naphthols); 0 (Octanols); MYW912WXJ4 (geosmin); WXB511GE38 (1-octen-3-ol)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171126
[Lr] Data última revisão:
171126
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171006
[St] Status:MEDLINE
[do] DOI:10.1093/ee/nvx125


  10 / 8368 MEDLINE  
              first record previous record
seleciona
para imprimir
Fotocópia
Texto completo
[PMID]:28981634
[Au] Autor:Skovgård H; Nachman G
[Ad] Endereço:Department of Agroecology, Section of Pathology and Entomology, University of Aarhus, Forsøgsvej 1, DK-4200 Slagelse, Denmark.
[Ti] Título:Modeling the Temperature- and Age-Dependent Survival, Development, and Oviposition Rates of Stable Flies (Stomoxys calcitrans) (Diptera: Muscidae).
[So] Source:Environ Entomol;46(5):1130-1142, 2017 10 01.
[Is] ISSN:1938-2936
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Stable flies (Stomoxys calcitrans (L.)) can be a serious pest associated with cattle facilities. In Denmark, they occur most abundantly at organic farms, where they cannot be controlled by means of insecticides. On traditional farms, where chemical control is widely used, development of resistance is of increasing concern. Therefore, interest in biological control or other alternative methods has been growing during the recent years. In order to understand the complex relationships between a pest and its natural enemies in a variable environment, it is necessary to know how temperature affects the dynamics of the involved species. In this paper, we apply data derived from several existing sources to investigate the influence of temperature on development and survival of eggs, larvae, pupae, and adult stable flies, as well as on the fecundity of adult females. We demonstrate that the same modeling framework (called SANDY), previously applied to lifetable data of the pteromalid pupal parasitoid (Spalangia cameroni Perkins), a biological control agent used against stable flies, can also be used to model S. calcitrans. However, the predicted temperature responses depend on the data sources used to parameterize the model, which is reflected by differences in estimated population growth rates obtained from American and non-American studies. Elasticity analysis shows that growth rates are more sensitive to changes in viability, in particular of adult flies, than in fecundity, which may have implications for the management of stable fly populations.
[Mh] Termos MeSH primário: Modelos Biológicos
Muscidae/crescimento & desenvolvimento
Oviposição
[Mh] Termos MeSH secundário: Animais
Feminino
Larva/crescimento & desenvolvimento
Masculino
Óvulo/crescimento & desenvolvimento
Pupa/crescimento & desenvolvimento
Temperatura Ambiente
[Pt] Tipo de publicação:JOURNAL ARTICLE; VALIDATION STUDIES
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171126
[Lr] Data última revisão:
171126
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:171006
[St] Status:MEDLINE
[do] DOI:10.1093/ee/nvx118



página 1 de 837 ir para página                         
   


Refinar a pesquisa
  Base de dados : MEDLINE Formulário avançado   

    Pesquisar no campo  
1  
2
3
 
           



Search engine: iAH v2.6 powered by WWWISIS

BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde