Overwintering
Mostrando 1-12 de 41 artigos, teses e dissertações.
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1. Winter prevalence of obligate aphid pathogen Pandora neoaphidis mycosis in the host Myzus persicae populations in southern China: modeling description and biocontrol implication
Pandora neoaphidis overwintering had been investigated by monitoring its prevalence in Myzus persicae populations in open fields. Cabbage plants in field plots were weekly taken after mycosis initiation, to count and examine the living and dead aphids infected by P. neoaphidis. Based on the field data, infection levels (I) varied with field temperature (T),
Brazilian Journal of Microbiology. Publicado em: 2012-03
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2. Overwintering strategy of the brown stink bug in northern Paraná.
Field observations from April to October 1992, at the Field Experimental Station of EMBRAPA in northern Paraná, indicated that the neotropical brown stink bug (Euschistus heros, Heteroptera: Pentatomidae) overwinters under dead leaves. Insects were found underneath dead leaves of mango and coffee trees, as well as below fallen leaves of the legumes lablab a
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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3. Alternative food sources and overwintering feeding behavior of the boll weevil, Anthonomus grandis boheman (coleoptera: curculionidae) underthe tropical conditions of central Brazil
The boll weevil causes serious damage to the cotton crop in South America. Several studies have been published on this pest, but its phenology and behavior under the tropical conditions prevailing in Brazil are not well-known. In this study the feeding behavior and main food sources of adult boll weevils throughout the year in Central Brazil was investigated
Neotropical Entomology. Publicado em: 2010-02
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4. Seasonal abundance and mortality of Oebalus poecilus (Dallas) (Hemiptera : Pentatomidae) in a hibernation refuge
Oebalus poecilus (Dallas) é praga importante do arroz irrigado no Rio Grande do Sul, Brasil. Este inseto hiberna durante os meses mais frios em refúgios como o folhedo de bambu. Este estudo objetivou elucidar a hibernação de O. poecilus e determinar as causas de mortalidade durante este período. O estudo foi realizado em um bambuzal com cerca de 140 m2,
Publicado em: 2010
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5. Characterization of the imaginal reproductive diapause of Oebalus poecilus (Dallas) (Hemiptera : Pentatomidae) / Caracterização da diapausa imaginal reprodutiva de oebalus poecilus (Dallas) (Hemiptera: Pentatomidae)
Descreveu-se o estado de desenvolvimento dos órgãos internos de reprodução de fêmeas e machos de Oebalus poecilus (Dallas) e avaliou-se o conteúdo de corpos gordurosos contidos na cavidade abdominal, durante o período de hibernação, em indivíduos amostrados em folhedo de bambu, em Eldorado do Sul (30º02’S e 51°23’W), RS, Brasil. No início da
Publicado em: 2010
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6. OCORRÊNCIA, DISTRIBUIÇÃO ESPAÇO-TEMPORAL E FLUTUAÇÃO DA POPULAÇÃO DE PERCEVEJOS PENTATOMÍDEOS EM SUCESSÕES CULTURAIS SOB PIVÔ CENTRAL E ÁREAS ADJACENTES / OCURRENCE, SPATIAL AND TEMPORAL DISTRIBUTION OF STINK BUGS (PENTATOMIDAE) POPULATION IN CROPS SUCCESSIONS UNDER CENTER PIVOT AND ADJACENT AREAS
Os percevejos pentatomídeos são pragas de soja, milho, trigo e outras culturas. Economicamente, seu manejo é fundamental e o conhecimento do comportamento de suas populações é necessário para planejar medidas de ação eficientes. O objetivo desta pesquisa foi verificar a ocorrência, distribuição espaço-temporal e flutuação da população de esp
Publicado em: 2010
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7. SPATIAL AND TEMPORAL DISTRIBUTION OF SOYBEAN STINK BUG AND BEHAVIOR OF Piezodorus guildinii (WESTWOOD, 1837) (HEMIPTERA: PENTATOMIDAE) ON SOYBEAN (Glycine max (L.) MERRILL) ON DAY TIME / DISTRIBUIÇÃO ESPACIAL E TEMPORAL DE PERCEVEJOS DA SOJA E COMPORTAMENTO DE Piezodorus guildinii (WESTWOOD, 1837) (HEMIPTERA: PENTATOMIDAE) NA SOJA (Glycine max (L.) MERRILL) AO LONGO DO DIA
From december 2006 to april 2008 was conducted a experiment at Universidade Federal de Santa Maria, Santa Maria, RS, Brasil, with objective to verify spatial and temporal distribution of soybean stink bug, with georeferenced surveying. The samplings was accomplished in area of 6,64 hectares of soybean (Glycine max (L.) Merrill), it was divided in a sample gr
Publicado em: 2009
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8. Winter survival of immature instars of Mansonia indubitans Dyar & Shannon and Mansonia titillans Walker (Diptera: Culicidae), in Buenos Aires, Argentina
We conducted a whole year research on the ecology of Mansonia indubitans and Ma. titillans in Macáes Pond, Costanera Sur Reserve, Buenos Aires, Argentina. The usage of different floating plants by immature instars and their overwintering was analized. The percentage of usage of the available floating macrophytes (Pistia, Limnobium, and Salvinia) by the larv
Memórias do Instituto Oswaldo Cruz. Publicado em: 2006-09
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9. Overwintering Periwinkle (Vinca minor L.) Exhibits Increased Photosystem I Activity 1
The effects of natural, overwintering conditions on photosystem I and photosystem II activity were examined in isolated thylakoids of periwinkle (Vinca minor L.), an endemic, cold-tolerant, herbaceous evergreen. DCMU-Insensitive photosystem I activity (ascorbate/dichlorophenolindophenol → methylviologen) exhibited a twofold increase in light-saturated rate
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10. Overwintering Trends of Cold Resistance and Carbohydrates in Medium Red, Ladino, and Common White Clover. 12
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11. Temperature and Aging Effects on Leaf Membranes of a Cold Hardy Perennial, Fragaria virginiana1
The lipid composition of leaves of wild strawberry (Fragaria virginiana Duchesne) was analyzed throughout an annual growth cycle in the field. Cellular hardiness to temperature stress was assessed concomitantly by a solute leakage technique. Leaves were shown to be very sensitive to an applied temperature of −5°C during the summer months but insensitive t
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12. Non-breeding season events influence sexual selection in a long-distance migratory bird
The study of sexual selection has traditionally focused on events and behaviours immediately surrounding copulation. In this study, we examine whether carry-over effects from the non-breeding season can influence the process of sexual selection in a long-distance migratory bird, the American redstart (Setophaga ruticilla). Previous work on American redstarts
The Royal Society.