03639nab a2200325 i 4500003000900000005001700009008004100026040001800067072001400085072000800099100003700107100003100144100002800175100003400203100003200237100004100269100004200310100003000352245012700382500006700509520109000576520128601666650002302952650002002975650001602995650002503011650001903036773018103055856007703236BR-BrBNA20260508111814.0260508b2020    bl.qr|pooa||| 00| 0 eng |  aBR-BrBNAbeng  aH10b0230  aH01  aBarbosa, Vinícius de Oliveira   aBrito, Carlos Henrique de   aOliveira, Robério de   aLima, Rosângela Miranda de   aSilva, Jakellyne Felipe da   aAlves,  Júlio César Guimarães   aOliveira, Luana Vitória de Queiroz   aBatista, Jacinto de Luna   aBiological aspects and populational preference of Cotesia flavipes between Diatraea saccharalis and Diatraea flavipennella  a

Publicação online; 37 ref.; 6 tables; Summaries (En, Pt)  a


ABSTRACT:    Biological aspects of wild and laboratory-reared populations of Cotesia flavipes was assessed parasitizing Diatraea saccharalis and Diatraea flavipennella. The experiments were conducted using a climate-controlled room adjusted to 26 ± 2 °C, relative  humidity  of  70  ±  10%,  and  12:12  h  (Light:  Dark)  photoperiod.  The  choice  and  no-choice  tests  were  run  using  arenas  holding infested pieces of stalks with parasitoid release inside the arena and allowed a searching time of 6 h. After this period, the stalks were opened and the larvae single reared until molting to pupa or forming parasitoid pupae. An experimental design completely randomized in a 2 × 2 factorial arrangement was performed. The wild population of C. flavipes exhibited preference and better performance parasitizing D. flavipennella. Research to evaluate the parasitism efficiency and quality of the parasitoids crossing wild and laboratory populations of C. flavipes is necessary to enhance field release success. 


Key words:      biological control; Braconidae; sugarcane  a


RESUMO:     Aspectos  biológicos  de  populações  de  campo  e  laboratório  de  Cotesia flavipes  foram  avaliados  em  função  do  parasitismo de Diatraea saccharalis e Diatraea flavipennella. Os experimentos foram conduzidos em sala climatizada ajustada à  temperatura  de  26  ±  2  °C,  umidade  relativa  de  70  ±  10%  e  fotoperíodo  de  12:12  (Luz:  Escuro).  Os  tratamentos  foram  representados por arenas contendo colmos infestados, com posterior liberação do parasitoide, com e sem chance de escolha e tempo de busca de 6 h. Após esse período os colmos foram abertos e as larvas individualizadas e alimentadas até a formação das pupas da praga ou da massa de pupas do parasitoide. Utilizou-se o delineamento experimental inteiramente casualizado em arranjo fatorial 2 × 2. Os resultados mostram que a população de campo de C. flavipes exibe preferência e parasitismo de D. flavipennella. Pesquisas que avaliem a eficiência de parasitismo e qualidade dos parasitoides oriundos do cruzamento entre as populações de campo e de laboratório de C. flavipes são recomendadas para que a liberação massal deste parasitoide seja eficiente.  


Palavras-chave:      controle biológico; Braconidae; cana-de-açúcar  aCANA-DE-AÇÚCAR  aPRAGA DE PLANTA  aPARASITOIDE  aCONTROLE BIOLÓGICO  aDEFESA VEGETAL0 04656dRecife-PE Universidade Federal Rural de Pernambuco 2006o2026-1925tRevista Brasileira de Ciências Agrárias (Brazil)x1981-1160gv. 15(4) p. 1-8; (2020)wBR2026000562  uhttp://www.agraria.pro.br/ojs32/index.php/RBCA/article/view/v15i4a7689/5