Florida Entomologist (2013) 96, 154-159

Maria Adriana Torqueti Rodrigues, Fabricio Fagundes Pereira, Samir Oliveira Kassab, Patrik Luiz Pastori, Daniele Fabiana Glaeser, Harley Nonato De Oliveira and José Cola Zanuncio (2013)
Thermal requirements and generation estimates of Trichospilus diatraeae (Hymenoptera: Eulophidae) in sugarcane producing regions of Brazil
Florida Entomologist 96 (1), 154-159
Abstract: Knowledge of the thermal requirements of Trichospilus diatraeae (Hymenoptera: Eulophidae) is important if it is to be used successfully in to control Diatraea saccharalis (Lepidoptera: Crambidae) in sugarcane plantations. In the current study, the development of T. diatraeae was investigated in the pupae of D. saccharalis incubated at different temperatures. Seven T. diatraeae females were placed with host pupae for 24 h in tubes within chambers at 16, 19, 22, 25, 28 and 31 °C with 70 ± 10% RH and 14:10 h L:D. The life cycle duration of T. diatraeae decreased as the temperature increased, although no development was recorded at 31 °C. The number of T. diatraeae progeny per female ranged from 264.8 ± 40.7 (at 16 °C) to 385.1 ± 36.3 (at 25 °C), but no significant difference were recorded among temperature treatments (P > 0.05). The base temperature (T_b) and thermal constant (K) of T. diatraeae were 9.37 °C and 257.60 degree-days, respectively. The estimated average numbers of generations per year of T. diatraeae in pupae of D. saccharalis were 18.5, 19.93 and 17.73 for Dourados, Ivinhema and Ponta Porã municipalities of Mato Grosso do Sul State, Brasil, respectively.
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Database assignments for author(s): José Cola Zanuncio

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
general biology - morphology - evolution
environment/habitat manipulation

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Diatraea saccharalis	Sugarcane (Saccharum officinarum)	Brazil (south)
Trichospilus diatraeae (parasitoid)	Diatraea saccharalis	Sugarcane (Saccharum officinarum)	Brazil (south)