Florida Entomologist (2019) 102, 76-78

Evaldo Martins Pires, Roberta Martins Nogueira, Leda Rita D'Antonino Faroni, Marcus Alvarenga Soares and Marco Antônio Oliveira (2019)
Biological and reproductive parameters of Tribolium castaneum in Brazil nut
Florida Entomologist 102 (1), 76-78
Abstract: Brazil nut is used widely in the food industry because the nutritional content of this commodity contains a variety of lipids, proteins, and essential minerals, as well as vitamin A which is used in the cosmetic industry. Agricultural products such as grains, seeds, and nuts often are adversely affected by numerous organisms, including Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae), that cause significant losses during storage. Therefore, the objective of the present study was to investigate the biological and reproductive parameters of T. castaneum on Brazil nut. Pre-oviposition, egg incubation, and oviposition lasted an average of 7.4, 4.2, and 28.4 d, respectively, with 79.4% egg viability. Oviposition began on the seventh d after mating and the last occurrence of laying was on the 46th d. An average of 1.2 eggs per d per female was produced during the first 20 d. The mean number of eggs per female produced during a lifetime was 28.9. The larval stage exhibited 8 instars during a period of about 86 d. The pupal stage averaged 6.5 d and the adult stage 40.8 d. Survival rate was 44.7% on d 40 and 22.7% on d 60 after adult emergence.
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Database assignments for author(s): Marcus Alvarenga Soares

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Tribolium castaneum	Brazil nut (Bertholletia excelsa)	Brazil (NW)