Host egg chorion structure influencing host suitability for the egg parasitoid Trichogramma Westwood

Pak, G.A.; Dalen, A. van; Kaashoek, N.K.; Dijkman, H.

doi:10.1016/0022-1910(90)90174-e

Cited by 22 publications

(20 citation statements)

References 23 publications

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“…Pratissoli & Parra (2001) relataram que as cinco linhagens de T. pretiosum, testadas em ovos de T. absoluta e P. operculella, apresentaram o mesmo potencial de parasitismo, apesar da variação de 43,5 a 69,5 e 41,7 a 71,5%, respectivamente. A variação na porcentagem de parasitismo entre os trabalhos pode estar relacionada às características intrínsecas de cada espécie ou linhagem, ou até mesmo à espessura e à dureza do córion, que podem determinar se o hospedeiro será atacado ou não (Pak et al, 1990 (Sá & Parra, 1994), e é superior à obtida com espécies e linhagens de Trichogramma spp. em ovos de G. aurantianum, que variou de 30,9 a 42,1% (Molina et al, 2005).…”

Section: Resultsunclassified

Linhagens de Trichogramma e Trichogrammatoidea para controle de Stenoma catenifer

Nava

Takahashi²,

Parra³

2007

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi selecionar espécies e linhagens de Trichogramma e Trichogrammatoidea, com potencial para controle da broca-do-abacate Stenoma catenifer, considerada a principal praga do abacateiro (Persea americana Mill. Trichogramma and Trichogrammatoidea strains to control Stenoma cateniferAbstract -The objective of this work was to select Trichogramma and Trichogrammatoidea species and strains with potential to control the avocado fruit borer Stenoma catenifer, considered the main avocado (Persea americana Mill.) pest. Laboratory experiments were carried out with the following strains and species, which comprised eight Trichogramma pretiosum; one Trichogramma atopovirilia; two Trichogramma bruni; and one Trichogrammatoidea annulata. The number of parasitoids to be released per S. catenifer egg under semi-field conditions was studied. Biological parameters evaluated in laboratory were egg-adult development time, survivorship, parasitism, sex ratio, number of parasitoids emerged per S. catenifer egg, and adult longevity. In semi-field experiment, the number of parasitized eggs was evaluated. The species Trichogrammatoidea annulata, Trichogramma atopovirilia and their strains were selected for the largest number of S. catenifer eggs parasitized. Under semi-field conditions, the highest parasitism was achieved with an estimated ratio of 28 and 30 parasitoids per pest egg, respectively, for Trichogrammatoidea annulata and Trichogramma atopovirilia.

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Section: Resultsunclassified

Linhagens de Trichogramma e Trichogrammatoidea para controle de Stenoma catenifer

Nava

Takahashi²,

Parra³

2007

Pesq. agropec. bras.

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“…Eggs from moths of the same genus might not exhibit enough differences for T. remus be able to differentiate among them. Peculiarities of each parasitoid host and their relative differences on the thickness of the chorion of the egg, especially the exochorion that is the most proteinrich layer, can affect not only the handling time and exploitation by egg parasitoids, but also the host suitability (Pak et al, 1990). Eggs differences between S. frugiperda and C. cephalonica are certainly higher than when compared eggs inside Spodoptera genus.…”

Section: Discussionmentioning

confidence: 99%

Biological parameters and parasitism capacity of Telenomus remus Nixon (Hymenoptera: Platygastridae) reared on natural and factitious hosts for successive generations

Pomari-Fernandes¹,

Bueno²,

Queiroz³

et al. 2015

Afr. J. Agric. Res.

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Factitious hosts are largely used in parasitoid production. However, changes in parasitism capacity may happen when hosts are switched. Therefore, the ability of a parasitoid species to be reared on factitious host and still keep high level of parasitism on the natural target pest after successive rearing can determine parasitoid quality and must be investigated. Thus, we evaluated Telenomus remus parasitism on Corcyra cephalonica eggs compared with its natural host, Spodoptera frugiperda eggs, for different generations. After being reared on C. cephalonica, T. remus parasitism on S. frugiperda was evaluated to measure different T. remus biological parameters and parasitism capacity (parasitoid quality). Gradual increase in C. cephalonica eggs parasitized was observed over the generations, stabilizing on generation F 7 . The number of parasitized C. cephalonica eggs was similar among generations (from generation F 7 to F 19 ). Taking the lifetime parasitism into consideration, parasitism capacity is similar from T. remus reared on S. frugiperda eggs from those reared on C. cephalonica eggs (generation F 19 ). When laboratory-produced T. remus on C. cephalonica eggs was exposed to the natural host, parasitism was higher on F 5 generation and stable from generations F 5 to F 19. Therefore, parasitoids did not lose their ability to parasitize eggs of natural host assuring good quality of the laboratory-produced parasitoid using C. cephalonica eggs as factitious host.

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“…está relacionada com a qualidade nutricional do hospedeiro escolhido para o parasitismo e daquele no qual foram multiplicadas (Thuler et al, 2007). Além disso, a diferença na percentagem de parasitismo pode estar atrelada às características intrínsecas de cada espécie, ou até mesmo à espessura e à dureza do córion do ovo (Pak et al, 1990 (Prezotti & Parra, 2002), sendo os valores superiores a 0,5. O sexo da progênie pode ser influenciado pela qualidade do hospedeiro bem como pela ação da bactéria do gênero Wolbachia (Rodrigues, 2013).…”

Section: Methodsunclassified

Desempenho de Trichogramma galloi (Hymenoptera: Trichogrammatidae) sobre ovos de Diatraea spp. (Lepidoptera: Crambidae)

Valente

Broglio

Passos

et al. 2016

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar o desempenho de Trichogramma galloi (Hymenoptera: Trichogrammatidae) sobre ovos de Diatraea flavipennella e D. saccharalis (Lepidoptera: Crambidae), assim como as características biológicas do parasitoide em ambos os hospedeiros, e elaborar a tabela de vida de fertilidade. Para isso, foram realizados testes com e sem chance de escolha e bioensaios para avaliar as características biológicas do parasitoide em ambos os hospedeiros. A tabela de vida de fertilidade foi elaborada por meio do parasitismo diário das fêmeas de T. galloi sobre os hospedeiros. Os resultados da percentagem de parasitismo em testes com chance de escolha mostraram uma melhor aceitação por parte de T. galloi quanto a ovos de D. flavipennella. Com relação aos parâmetros biológicos do parasitoide em ambas as espécies, não houve diferença significativa. Resultados da tabela de vida de fertilidade evidenciam que D. flavipennella e D. saccharalis permitem aumento populacional para T. galloi. O parasitoide T. galloi apresenta desempenho satisfatório em ambos os hospedeiros, sendo um potencial agente de controle para essas espécies.Termos para indexação: broca-da-cana-de-açúcar, chance de escolha, controle biológico, parasitoide, tabela de vida. Performance of Trichogramma galloi (Hymenoptera: Trichogrammatidae) on eggs of Diatraea spp. (Lepidoptera: Crambidae)Abstract -The objective of this work was to evaluate the performance of Trichogramma galloi (Hymenoptera: Trichogrammatidae) on eggs of Diatraea flavipennella and D. saccharalis (Lepidoptera: Crambidae), as well as the biological characteristics of the parasitoid in both hosts, and to elaborate the fertility life table. For this, tests with and without choice and bioassays to evaluate the biological characteristics of the parasitoid in both hosts were performed. The fertility life table was developed through daily parasitism of T. galloi females on the hosts. The percentage results of parasitism in free-choice tests showed a better acceptance by T. galloi concerning eggs of D. flavipennella. Regarding the biological parameters of the parasitoid in both species, there was no significant difference. Fertility life table results show that D. flavipennella and D. saccharalis allow population increase for T. galloi. The parasitoid T. galloi has satisfactory performance in both hosts, and is a potential control agent for these species.

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Host egg chorion structure influencing host suitability for the egg parasitoid Trichogramma Westwood

Cited by 22 publications

References 23 publications

Linhagens de Trichogramma e Trichogrammatoidea para controle de Stenoma catenifer

Linhagens de Trichogramma e Trichogrammatoidea para controle de Stenoma catenifer

Biological parameters and parasitism capacity of Telenomus remus Nixon (Hymenoptera: Platygastridae) reared on natural and factitious hosts for successive generations

Desempenho de Trichogramma galloi (Hymenoptera: Trichogrammatidae) sobre ovos de Diatraea spp. (Lepidoptera: Crambidae)

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