1999
DOI: 10.1590/s0301-80591999000400012
|View full text |Cite
|
Sign up to set email alerts
|

Abstract: Os experimentos foram conduzidos em culturas comerciais de algodoeiros na região de Dourados no Estado de Mato Grosso do Sul, durante a safra 1996/97. Observaram-se os seguintes aspectos do parasitismo natural em ovos de Alabama argillacea Hübner e Heliothis virescens Fabricius por Trichogramma pretiosum Riley: índice de parasitismo, razão sexual e número de adultos emergidos por ovo. Realizou-se coleta semanal de ovos dos lepidópteros e sua incubação em laboratório. Aos 31 dias após a emergência das plantas (… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3

Citation Types

0
3
0
1

Year Published

2002
2002
2022
2022

Publication Types

Select...
7

Relationship

1
6

Authors

Journals

citations
Cited by 14 publications
(4 citation statements)
references
References 7 publications
0
3
0
1
Order By: Relevance
“…Other reports on the high level of natural egg parasitism by T. pretiosum in areas which had been sprayed with organophosphates and pyrethroids with a broad action spectrum may be found in the literature (Parra et al, 1987;Fernandes et al, 1999). However, parasitism reduction in eggs of Anagastha kuehniella was obtained in the laboratory at levels as low as 15% and there was also a low emergence of T. pretiosum when chlorpyrifos was applied 72 h before parasitism (Hohmann, 1991(Hohmann, , 1993.…”
Section: Discussionmentioning
confidence: 99%
“…Other reports on the high level of natural egg parasitism by T. pretiosum in areas which had been sprayed with organophosphates and pyrethroids with a broad action spectrum may be found in the literature (Parra et al, 1987;Fernandes et al, 1999). However, parasitism reduction in eggs of Anagastha kuehniella was obtained in the laboratory at levels as low as 15% and there was also a low emergence of T. pretiosum when chlorpyrifos was applied 72 h before parasitism (Hohmann, 1991(Hohmann, , 1993.…”
Section: Discussionmentioning
confidence: 99%
“…The eggs, larvae and pupae of A. argillacea are attacked by natural enemies (entomopathogens, predators and parasitoids) [39] [43] , which together with abiotic factors contribute to a relatively high natural mortality [1] . Therefore, the probability of an A. argillacea larva dispersing from a Bt cotton plant to a non-Bt cotton plant and surviving is very low with the refuge-in-a-bag strategy.…”
Section: Discussionmentioning
confidence: 99%
“…Trichogramma pretiosum Riley, por exemplo, é responsável por elevados índices de parasitismo natural em ovos de Alabama argillacea (Hübner) e Heliothis virescens (Fabr.) em algodoeiros do Mato Grosso do Sul (Fernandes et al 1999).…”
unclassified