scholarly journals IMPACTO DE HERBICIDAS UTILIZADOS EM CANA-DE-AÇÚCAR SOBRE Cotesia flavipes

2014 ◽  
Vol 24 ◽  
Author(s):  
MAURICIO DA CRUZ CÔRREA ◽  
MARIA BERNADETE SILVA DE CAMPOS ◽  
PATRÍCIA ANDREA MONQUERO
Keyword(s):  
Cotesia Flavipes

O objetivo deste trabalho foi avaliar o efeito dos herbicidas diuron + hexazinona, ametrina + clomazona e sulfentrazona sobre a população de Cotesia flavipes, parasitoide da broca da cana-de-açúcar. Foram avaliadas cinco doses dos herbicidas (½ D, ¼ D, 1 D, 2 D e 4 D, sendo D = dose comercial de cada produto) e a testemunha sem herbicida. Os produtos foram pulverizados diretamente no inseto, na fase de massas (casulos), ou mediante contato indireto nas folhas de cana-de-açúcar, visando atingir o inseto adulto. A porcentagem de viabilidade de casulos foi observada até 120 horas após o tratamento e a mortalidade causada pelo efeito do contato indireto monitorada após 72, 96 e 120 horas da aplicação. Os resultados mostraram que o contato direto dos herbicidas ametrina + clomazona e sulfentrazona com os casulos apresentaram efeito negativo quando utilizadas doses maiores que a comercial. Já para diuron + hexazinona não houve impacto negativo significativo. O contato indireto sobre os insetos adultos causou aumento inicial da mortalidade em todos os tratamentos. Os resultados indicaram baixa influência dos herbicidas para a população de C. flavipes, mas o contato das vespas com folhas pulverizadas pode reduzir o tempo de vida do parasitoide.

scholarly journals Relationship between number of ovipositions of Cotesia flavipes (Cam.) and number of descendants emerged from its host Diatraea saccharalis (Fabr.)

1997 ◽  
Vol 26 (1) ◽  
pp. 87-91 ◽  
Author(s):  
Meire N. Yamauchi ◽  
Nivar Gobbi ◽  
José Chaud-Netto ◽  
Ana E. Campos-Farinha
Keyword(s):  
Sex Ratio ◽  
Cotesia Flavipes ◽  
Diatraea Saccharalis ◽  
Recorded Data ◽  
Petri Dishes

Females of Cotesia flavipes (Cam.) were individually introduced into Petri dishes containing one larva of its host Diatraea saccharalis (Fabr.). Each C. flavipes female was allowed to oviposit once or twice in the same larva. Time of emergence of larvae and adults, sex-ratio, number of non-viable larvae and pupae, and longevity of adults of C. flavipes were recorded. Data revealed that two successive ovipositions in the host did not affect sex-ratio, but increased number of parasitoids and number of non-viable larvae and pupae.

scholarly journals Resistência de genótipos de sorgo a Contarinia sorghicola (Coq.) (Diptera: Cecidomyiidae) e Diatraea saccharalis (Fabr.) (Lepidoptera: Pyralidae) e influência sobre parasitóides

1997 ◽  
Vol 26 (2) ◽  
pp. 327-333 ◽  
Author(s):  
Fernando M. Lara ◽  
Mauro R. D. A. Foss ◽  
Arlindo L. Boiça Jr. ◽  
José G. Trigo
Keyword(s):  
Sorghum Bicolor ◽  
Cotesia Flavipes ◽  
Contarinia Sorghicola ◽  
Diatraea Saccharalis ◽  
Lepidoptera Pyralidae

Avaliou-se a resistência de genótipos de sorgo (Sorghum bicolor) a Contarinia sorghicola (Coq.) e Diatraea saccharalis (Fabr.) e sua influência sobre parasitóides. Foram realizados ensaios em duas épocas de plantio, anotando-se o número de insetos (pragas e parasitóides) e calculando-se a percentagem de parasitismo. O genótipo AF-28 destacou-se como o mais resistente às duas espécies pragas, ocorrendo o inverso com o TX-2567; as maiores percentagens de parasitismo de C. sorghicola por Tetrastichus sp. (Hymenoptera: Eulophidae) ocorreram em BR-501 (36,7%) e AF-28 (20,0%); as maiores percentagens de parasitismo de D. saccharalis por Cotesia flavipes (Cam.) (Hymenoptera: Braconidae) foram observadas em BR-601 e 3DX-57 (50 e 40%).

scholarly journals Distribution and extent of Cotesia Flavipes Cameron (Hymenoptera: Braconidae) Parasitism in Northeastern Ethiopia

2013 ◽  
Vol 5 ◽  
pp. IJIS.S11009 ◽  
Author(s):  
Asmare Dejen ◽  
Emana Getu ◽  
Ferdu Azerefegne ◽  
Amare Ayalew
Keyword(s):  
Busseola Fusca ◽  
Relevant Information ◽  
Stem Borer ◽  
Cotesia Flavipes ◽  
Stem Borers ◽  
Parasitism Rate ◽  
African Countries ◽  
Suitable Host ◽  
Predominant Species ◽  
Larval Parasitoid

The distribution and extent of parasitism of Cotesia flavipes Cameron (Hymenoptera: Braconidae) on stem borer species attacking maize and sorghum were assessed in three zones of northeastern Ethiopia. Cotesia flavipes was found to be the key larval parasitoid of cereal stem borer species in all areas surveyed. This parasitoid has been introduced into several African countries for the control of Chilo partellus in maize and sorghum, but it has never been released in Ethiopia. The survey results indicated that the distribution and extent of parasitism of Cot. flavipes followed the distribution and severity of its suitable host, C. partellus. A Cotesia flavipes parasitism rate of between 33% and 82% was recorded in sub-moist warm (lowland) AEZs of all zones. In contrast, a parasitism rate of less than 6% was recorded in moist, cool highland areas where Busseola fusca was the predominant species. Cotesia flavipes caused lower rate of parasitism on stem borers in maize (up to 72%) than that of sorghum (up to 82%) in the three zones. In summary, high rates of parasitism of Cot. flavipes were recorded in lowland areas where C. partellus was the dominant borer species and low rates of parasitism were recorded in highland areas where B. fusca was the predominant species. Cotesia flavipes caused the highest parasitism (82%) on C. partellus. This result verified that Cot. flavipes contributed to the reduction of C. partellus population in lowlands, regardless of the zone, and its rate of parasitism varied between crop stages, crop types, elevations, host, and host stages. Findings of this study have particularly relevant information on the contribution of Cot. flavipes to the population reduction of stem borers, time or stage of its occurrence in relation to host stages and crop stages, and its distribution in relation to the availability of a suitable host across each zone. In conclusion, this larval parasitoid plays an important role in reducing stem borer populations and can be used as one component of integrated stem borer management in northeastern Ethiopia.

scholarly journals External morphology of Cotesia flavipes (Hymenoptera: Braconidae) during larval development

2010 ◽  
Vol 27 (6) ◽  
pp. 986-992 ◽  
Author(s):  
Daniela O. Pinheiro ◽  
Guilherme D. Rossi ◽  
Fernando L. Cônsoli
Keyword(s):  
Larval Development ◽  
Cotesia Flavipes ◽  
External Morphology

scholarly journals PARASITISASI DAN KAPASITAS REPRODUKSI COTESIA FLAVIPES CAMERON (HYMENOPTERA: BRACONIDAE) PADA INANG DAN INSTAR YANG BERBEDA DI LABORATORIUM

2006 ◽  
Vol 6 (2) ◽  
pp. 87-91
Author(s):  
Purnomo Purnomo
Keyword(s):  
Sugar Cane ◽  
Host Species ◽  
Cotesia Flavipes ◽  
Reproductive Capacity ◽  
Chilo Sacchariphagus

Parasitization and reproductive capacity of Cotesia flavipes Cameron (Hymenoptaera: Braconidae) on different hosts and instar in laboratory. C. flavipes is an important parasitoid on sugar cane spotted borer, Chilo sacchariphagus Bojer.  The biology informations of C. flavipes is needed in order to make more effective as acontroling agent. The objectives of this research were to investigate the effect of host species (C. sacchariphagus, C. auricilius, Scirpophaga nivella) and different instar on parasitization and reproductive capacity of C. flavipes. The results showed that the best host for                    C.  flavipes is  C. sacchariphagus and at fifth instar of  C. sacchariphagus.

The gregarious parasitoid Cotesia flavipes displays a high level of preadaptation to a novel host, Diatraea indigenella

BioControl ◽  
2019 ◽  
Vol 65 (1) ◽  
pp. 37-46
Author(s):  
C. Londoño-Sánchez ◽  
J. Montoya-Lerma ◽  
J. P. Michaud ◽  
G. Vargas
Keyword(s):  
Cotesia Flavipes ◽  
Novel Host ◽  
Gregarious Parasitoid ◽  
High Level

Suitability of African Gramineous Stemborers for Development of Cotesia flavipes and C. sesamiae (Hymenoptera: Braconidae)

1995 ◽  
Vol 24 (4) ◽  
pp. 978-984 ◽  
Author(s):  
Adele J. Ngi-Song ◽  
William A. Overholt ◽  
Jonathan N. Ayertey
Keyword(s):  
Cotesia Flavipes
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