Capacidade reprodutiva e longevidade de Glyptapanteles muesebecki (Blanchard) (Hymenoptera: Braconidae) parasitando lagartas de Pseudaletia sequax Franclemont (Lepidoptera: Noctuidae)

Foerster, Luís A.; Doetzer, Augusta K.; Avanci, Marion R. F.

doi:10.1590/s0301-80591999000300014

Cited by 6 publications

(3 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Em criações massais de parasitoides, a capacidade de sobrevivência é um dos requisitos para o controle de qualidade (Carneiro et al 2009). Além disso, a maior longevidade representa uma característica favorável à espécie, pois confere às fêmeas parasitoides maior tempo de busca por hospedeiros no campo em condições de escassez dos mesmos (Foerster et al 1999).…”

Section: Discussionunclassified

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.

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionunclassified

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.

View full text Add to dashboard Cite

show abstract

“…Larvae of the wheat armyworm Pseudaletia sequax Franclemont are polyphagous, feeding on leaves of a large number of gramineous plants of economic importance, such as wheat, barley and oats (Foerster et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

“…Larvae of the genus Pseudaletia Franclemont (Lepidoptera: Noctuidae) are cosmopolitan pests of cereal crops (Franzmann, 1973;Singh & Rai, 1977;Silva et al, 2003). Larvae of the wheat armyworm Pseudaletia sequax Franclemont are polyphagous, feeding on leaves of a large number of gramineous plants of economic importance, such as wheat, barley and oats (Foerster et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Importance of carbohydrate sources to the reproductive output of the wheat armywormPseudaletia sequax

Marchioro

Foerster

2011

Agri and Forest Entomology

Self Cite

View full text Add to dashboard Cite

1 The importance of nutrients consumed by adults differs among lepidopteran species. Knowledge of adult nutritional requirements is particularly useful when adopting biological control strategies that involve the use of flowering plants to improve the effectiveness of natural enemies. This is because nectar may also serve as a carbohydrate source for the pest. 2 We evaluated the effect of different sources and concentrations of carbohydrate consumed by adults on the performance and fitness of the wheat armyworm Pseudaletia sequax Franclemont, which is an important pest of cereal crops. 3 The consumption of carbohydrates by the adults significantly increased the length of the oviposition period, fecundity, fertility and longevity of P. sequax. Adult nutrition also affected the daily oviposition pattern of the females. 4 The demographic parameters estimated for each diet regime (i.e. intrinsic rate of increase, finite rate of increase and net reproductive rate) were influenced by adult nutrition. These parameters also varied according to the source and concentration of carbohydrates. 5 The results obtained in the present study suggest that the use of perennial flowering plants to provide a food source for natural enemies can also favour the pest.

show abstract

Climate change and voltinism of Mythimna sequax: the location and choice of phenological models matter

Jacques

Sampaio

Santos

et al. 2019

Agri and Forest Entomology

View full text Add to dashboard Cite

Temperature is a key environmental factor affecting the growth, development, survival and reproduction of insects. Although it is widely known that the relationship between temperature and insect development rate is nonlinear, model‐based studies have been conducted to investigate the global warming impacts on insect voltinism using the degree‐day approach based on a linear model. In the present study, the wheat armyworm Mythimna sequax (Franclemont) was used as a model organism to test whether voltinism estimated under current and future climate conditions varied among phenological models, locations and climate change scenarios. In general, voltinism increased in different years and climate change scenarios compared with current climatic conditions. The degree‐day overestimated the number of generations compared with the nonlinear models and also predicted an increase in voltinism in the entire study area as a result of global warming. Location, phenological model and the interaction between these factors explained 94% of the variance in the estimated voltinism. The results obtained in the present study reveal that the choice of phenological models affects voltinism predictions and that a nonlinear model can be used to understand the effects of climate change on insect voltinism, especially in regions where temperature will reach the upper threshold of a species more often.

show abstract

Capacidade reprodutiva e longevidade de Glyptapanteles muesebecki (Blanchard) (Hymenoptera: Braconidae) parasitando lagartas de Pseudaletia sequax Franclemont (Lepidoptera: Noctuidae)

Cited by 6 publications

References 9 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)

Importance of carbohydrate sources to the reproductive output of the wheat armywormPseudaletia sequax

Climate change and voltinism of Mythimna sequax: the location and choice of phenological models matter

Contact Info

Product

Resources

About