Data/hora: 11/06/2024 15:20:45

Biblioteca(s): | Embrapa Algodão.
Data corrente: | 16/03/2016
Data da última atualização: | 16/03/2016
Autoria: | ALVES, T. J. S.; SILVA-TORRES, C. S. A.; WANDERLEY-TEIXEIRA, V.; TEIXEIRA, A. A. C.; TORRES, J. B.; LIMA, T. A.; RAMALHO, F. de S.
Afiliação: | THIAGO J. S. ALVES, UFRPE; CHRISTIAN S. A. SILVA-TORRES, UFRPE; VALÉRIA WANDERLEY-TEIXEIRA, UFRPE; ÁLVARO A. C. TEIXEIRA, UFRPE; JORGE B. TORRES, UFRPE; TARDELLY DE ANDRADE LIMA, ESTAGIARIO-CNPA; FRANCISCO DE SOUZA RAMALHO, CNPA.
Título: | Behavioral studies of the parasitoid Bracon vulgaris ashmead (Hymenoptera: Braconidae).
Ano de publicação: | 2015
Fonte/Imprenta: | Journal of Insect Behavior, v. 28, n. 5, p. 604-617, 2015.
Idioma: | Inglês
Conteúdo: | Bracon vulgaris is a larval ectoparasitoid of the boll weevil, Anthonomus grandis, a key cotton pest We investigated the influence of parasitoid age, photoperiod and host availability on B. vulgaris parasitism. Five- and 10-day-old parasitoids were exposed to A. grandis densities of three, six, 12 and 24 larvae per female. Five-day-old females showed higher parasitism rates (F = 21.55, P < 0.0001), with a positive increase in parasitism rate up to 12 larvae, parasitizing an average (±SE) of 1.3 (±0.12), 3.4 (±0.35) and 4.4 (±0.45) larvae (at the densities of 3, 6 and 12 larvae, respectively), dropping to 1.4 (±0.17) when 24 larvae were offered. Next, the period of most parasitism activity during the photophase was determined by exposing five-dayold B. vulgaris females to different durations of light exposure (1, 3, 6, 8 and 10 h) after 12 h darkness. Results showed that the shortest time to host location occurred 8 h after light exposure, when parasitoids were most active searching for the host. A sequence of seven behavioral acts leading to successful parasitism was identified and the transitions between successive behavioral acts were quantified and depicted in an ethogram. The longest duration act was oviposition (or host acceptance), a complex behavior with several distinct phases.
Palavras-Chave: | Bracon vulgaris; Ectoparasitoid; Parasitism behavior.
Thesagro: | Anthonomus grandis; Himenoptero.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/141278/1/Behavioral-studies-of-the-parasitoid-Bracon-vulgaris-....pdf
Registro original: | Embrapa Algodão (CNPA)
Exemplares: | CNPA - (28098-1) - UPC - AP - DD -  -  -  - DIS