Capacidade reprodutiva de fêmeas de Apanteles galleriae (Hymenoptera, Braconidae) em lagartas de Galleria mellonella e Achroia grisella (Lepidoptera, Pyralidae) criadas com dietas diferentes

Zacarin, Giuliano Grici; Gobbi, Nivar; Chaud-Netto, José

doi:10.1590/s0073-47212004000200005

Cited by 2 publications

(3 citation statements)

References 20 publications

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“…Em T. diatraeae, a proporção de machos é muito baixa em relação a fêmeas, porém esse fato não interfere no potencial de fecundação (Bounier 1975). Dessa forma, as proporções sexuais das espécies parasitoides podem ser controladas potencialmente, de preferência em favor das fêmeas, propiciando programas de controle biológico mais efetivos, com predominância de indivíduos do sexo feminino para liberações no campo (Cañete & Foerster 2003;Zacarin et al 2004), uma vez que são as fêmeas que parasitam e impedem a emergência do adulto hospedeiro.…”

Section: Discussionunclassified

“…A densidade de fêmeas parasitoides interfere na supressão da defesa celular do hospedeiro (Andrade et al 2010) e, em consequência, na produção da progênie (Sagarra et al 2000). A razão sexual (Zacarin et al 2004;Irvin & Hoddle 2006;Carneiro et al 2009), o tempo de desenvolvimento e a longevidade dos parasitoides (Silva-Torres & Matthews 2003) também podem ser alteradas com a densidade de parasitoides por hospedeiro.…”

Section: Trichospilus Diatraeaeunclassified

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Densidade de fêmeas de Trichospilus diatraeae (Hymenoptera: Eulophidae) por pupa de Diatraea saccharalis (Lepidoptera: Crambidae)

Vargas¹,

Pereira²,

Calado³

et al. 2013

Sitientibus sér. Ci. Biol.

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Density of parasitoid females affects their capacity to develop within the host. The number of Trichospilus diatraeae (Hymenoptera: Eulophidae) females per pupa of Diatraea saccharalis (Lepidoptera: Crambidae) was adjusted to study the effect of parasitoid production in the laboratory. Host pupae were parasitised by females of T. diatraeae at densities of 1:1, 7:1, 14:1, 21:1, 28:1 and 35:1 (parasitoid:host). The females of the parasitoid remained in contact with pupae for 24 h in glass tubes (8.5 × 2.5 cm), packed in a climatic chamber regulated at 25 ± 2ºC, 70 ± 10% relative humidity and light regime of 14 h. The percentage of parasitism and emergence of T. diatraeae on pupae of D. saccharalis was 100% in all parasitoid densities. The length of thr cycle (egg-adult) of Trichospilus diatraeae was 19.25 ± 0.22 days at a density of 1:1 and 17.00 ± 0.00 days at 35:1. The offspring number of T. diatraeae was 106.00 ± 12.38 and 514.67 ± 54.55 individuals per pupa at densities of 1:1 and 35:1, respectively. The sex ratio decreased with increasing density, ranging between 0.97 ± 0.01 and 0.89 ± 0.01 at densities of 1:1 and 35:1, respectively. The percentages of parasitism and emergence of T. diatraeae on pupae of D. saccharalis were not affected by the densities of female parasitoids. The densities of 14 to 21 females of T. diatraeae per pupa of D. saccharalis are suitable for rearing this parasitoid under laboratory conditions.

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Section: Discussionunclassified

Section: Trichospilus Diatraeaeunclassified

Densidade de fêmeas de Trichospilus diatraeae (Hymenoptera: Eulophidae) por pupa de Diatraea saccharalis (Lepidoptera: Crambidae)

Vargas¹,

Pereira²,

Calado³

et al. 2013

Sitientibus sér. Ci. Biol.

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“…Fagundes et al 2005) or from biological control in agroecossystems (e.g. Zacarin et al 2004). Field studies relating caterpillar seasonality and parasitism occurrence through a variety of scales are necessary to understand the interactions among herbivorous insects and their parasitoids.…”

Section: Introductionmentioning

confidence: 99%

Ecological aspects of lepidopteran caterpillar parasitoids from Caryocar brasiliense Camb. (Caryocaraceae) in a cerrado sensu stricto of Central Brazil

2007

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This study quantified parasitoid occurrence on five lepidopteran caterpillars species that use Caryocar brasiliense as host plant, trying to verify if there was a direct relationship between host abundance and the proportion of parasitism; if leaf shelters served as cues or protection from parasitoids; if host size influenced the proportion of parasitism, and if attacks by Diptera were more frequent than by Hymenoptera. Searches for external folivorous caterpillars were carried out in an area of cerrado sensu stricto, from July/2003 to June/2004. Caterpillars were more parasitized when occurred on mature leaves. Nola sp. (Noctuiidae) had the highest proportion of parasitism and a negative correlation between their body size and parasitoid attack. Caterpillars that constructed shelters suffered lower parasitism than those exposed. Hymenopteran parasitoids were more abundant than Dipteran parasitoids attacking caterpillars on C. brasiliense leaves. In general, parasitoid species richness and the proportion of parasitism in lepidopteran caterpillar on C. brasiliense showed associations with host population density, their life strategy, diet and leaf nutritional quality.

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Capacidade reprodutiva de fêmeas de Apanteles galleriae (Hymenoptera, Braconidae) em lagartas de Galleria mellonella e Achroia grisella (Lepidoptera, Pyralidae) criadas com dietas diferentes

Cited by 2 publications

References 20 publications

Densidade de fêmeas de Trichospilus diatraeae (Hymenoptera: Eulophidae) por pupa de Diatraea saccharalis (Lepidoptera: Crambidae)

Densidade de fêmeas de Trichospilus diatraeae (Hymenoptera: Eulophidae) por pupa de Diatraea saccharalis (Lepidoptera: Crambidae)

Ecological aspects of lepidopteran caterpillar parasitoids from Caryocar brasiliense Camb. (Caryocaraceae) in a cerrado sensu stricto of Central Brazil

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