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| Ribeiro,Paulo B.; Costa<a name=top1></a>,Paulo R. P.; Loeck,Alci E.; Vianna,Élvia E. S.; Silveira Júnior,Paulo. |
| The thermal requeriments of Culex quinquefasciatus (Say, 1823) and the number of generations in the year are determined. The colony to obtain eggs, larvae, pupae and adults was established under laboratory conditions. Every stage was maintained at constant temperature (15, 20, 25 and 30ºC), in cameras, with relative humidity of 80% ± 5 and photophase of 12 hours, to settle down the thermal inferior limit and the thermal constant by the method of the hiperbole. The thermal inferior limit to phase of egg, larvae and pupa were respectively 10.0, 9.1 and 10.2ºC, and 10.2ºC to all the aquatic cycle, with a thermal constant of 207.2 degree-day, with the mean of 15.5 generations per year in Pelotas, State of Rio Grande do Sul. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Culex; Culicidae; Thermal requirements. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212004000200010 |
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| Cividanes,Francisco Jorge; Santos-Cividanes,Terezinha Monteiro dos. |
| The objective of this work was to predict the occurrence of alates of Brevicoryne brassicae, Lipaphis erysimi, and Myzus persicae (Hemiptera, Aphididae) in Brassicaceae. The alate aphids were collected in yellow water traps from July 1997 to August 2005. Aphid population peaks were predicted using a degree‑day model. The meteorological factors, temperature, air relative humidity, rainfall, and sunshine hours, were used to provide precision indexes to evaluate the best predictor for the date of the first capture of alate aphids by the traps. The degree‑day model indicated that the peak population of the evaluated aphid species can be predicted using one of the following biofix dates: January 1st, June 1st, and the date of the first capture of the alate... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica oleracea; Pest management; Population dynamics; Thermal requirements. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000400005 |
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| Melo, José Wagner da Silva; UFRPE; Domingos, Cleiton Araújo; UFRPE; Galvão, Andreia Serra; UFRPE; Gondim Junior, Manoel Guedes Corrêa; UFRPE; Moraes, Gilberto José de; USP. |
| Euseius alatus DeLeon (Acari: Phytoseiidae) é um dos predadores mais comuns em fruteiras no Brasil, alimentando-se de pólen, ácaros e outros pequenos artrópodes. Este predador apresenta ampla distribuição, ocorrendo desde o Rio Grande do Sul até o Ceará. O presente trabalho teve como objetivo avaliar o efeito da temperatura no desenvolvimento e na reprodução de E. alatus e determinar suas exigências térmicas. O estudo foi conduzido a 18, 21, 24, 27, 30 e 33°C, umidade relativa de 70 ± 5% e fotofase de 12h. Nessas temperaturas, o período de ovo-adulto durou 14,0; 8,1; 5,5; 4,9; 3,8 e 3,1 dias, respectivamente. Os estágios de ovo, larva, protoninfa, deutoninfa e período de ovo-adulto apresentaram limiares térmicos de 12,52; 13,85; 14,86;... |
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Palavras-chave: 5.01.00.00-9 Agronomia acari; Inimigo natural; Exigências térmicas; Fruteiras tropicais; Tabela de vida de fertilidade acari; Natural enemy; Thermal requirements; Tropical fruits; Fertility life table. |
| Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/466 |
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| Kuhn,Taciana Melissa de Azevedo; Loeck,Alci Enimar; Botton,Marcos. |
| ABSTRACT: The thermal threshold and thermal requirements of Neopamera bilobata were determined, and the number of generations that this species may produce in the main strawberry-producing regions of Brazil was estimated. In a climate chamber (70±10% RH and 12h photophase) at 16, 19, 22, 25, 28, or 30±1°C, the development of 120 eggs was monitored until the adult stage, at each temperature. Nymphs were maintained in individual cages and fed on strawberry fruits of the cultivar Aromas. The mean duration and viability of the egg and nymph stages were calculated by estimating the lower and upper developmental thresholds and the thermal constant, and this information was used to estimate the number of generations per year in different strawberry-producing... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental factors; Thermal requirements; Predictive models. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018000100153 |
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