new record of tetrastichus howardi (olliff) as a parasitoid of diatraea saccharalis (fabr.) on maize novo registro de tetrastichus howardi (olliff) como parasitóide de diatraea saccharalis (fabr.) em milho

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ID: 228738
2011
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Abstract
Diatraea saccharalis (Fabr.) (Lepidoptera: Pyralidae) spends the largest part of its life cycle inside the stalk of the host plant,which provides protection against the action of conventional control methods. Biological control has been considered a viable alternative to control this pest in sugarcane (Saccharum officinarum L.) and corn (Zea mays L.), two pest preferential hosts. This paper reports the occurrence in Brazil of Tetrastichus howardi (Olliff) (Hymenoptera; Chalcidoidea: Eulophidae) parasitizing pupae of D. saccharalis obtained from corn plants. It also includes preliminary biological data about the insect. A single female of T. howardi is able to produce up to 66 offspring using a single pupa of the host D. Saccharalis and apparently does not distinguish between the host pupae of different ages. The life cycle of the parasitoid was around 25.5 days. The presence of the parasitoid in Brazil opens a new perspective on suppression of the sugarcane borer, considering the promising results already obtained in Asian countries. The insect is well adapted to laboratory conditions, can be produced in large scale and may became an additional option for the integrated pest management in those crops where D. saccharalis is a key pest such as the sugarcane, corn and sorghum (Sorghum bicolor (L.) Moench).
Diatraea saccharalis (Fabr.) (Lepidoptera: Pyralidae) passa a maior parte de seu ciclo biológico no interior do colmo da planta hospedeira, onde fica protegida contra a ação dos métodos convencionais de controle. O controle biológico tem sido considerado uma alternativa viável para o controle desta praga em cana-de-açúcar (Saccharum officinarum L.) e milho (Zea mays L.), dois hospedeiros preferenciais. Este trabalho relata a ocorrência no Brasil de Tetrastichus howardi (Olliff) (Hymenoptera, Chalcidoidea: Eulophidae) parasitando pupas de D. saccharalis em colmos de plantas de milho. Ele também inclui dados preliminares sobre alguns aspectos biológicos do parasitóide. Uma fêmea de T. howardi foi capaz de produzir até 66 descendentes em uma única pupa do hospedeiro e, aparentemente, não faz distinção entre diferentes idades da pupa. O ciclo de vida do parasitóide foi ao redor de 25,5 dias. A presença do parasitóide no Brasil abre uma nova perspectiva sobre a supressão da broca da cana, considerando os resultados promissores já obtidos em países asiáticos. O inseto é bem adaptado à condição de laboratório, podendo ser produzido em grande número, tornando assim, uma opção adicional para o manejo integrado nas culturas onde D. saccharalis é praga chave, tais como a cana-de-açúcar, milho e sorgo (Sorghum bicolor (L.) Moench).
Reference Key
cruz2011scientianew Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Ivan Cruz;Ana Carolina Redoan;Rafael Braga da Silva;Maria de Lourdes Corrêa Figueiredo;Angélica Maria Penteado-Dias
Journal journal of the iranian chemical society
Year 2011
DOI
10.1590/S0103-90162011000200017
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162011000200017
Keywords
biological control controle biológico parasitismagriculture (general)

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