Stink bug predator kills prey with salivary non-proteinaceous compounds

• Autor(a) principal: Martínez, Luis Carlos
• Data de Publicação: 2015
• Outros Autores: Fialho, Maria do Carmo Queiroz, Barbosa, Luiz Claudio Almeida, Oliveira, Leandro Licursi, Zanuncio, José Cola, Serrão, José Eduardo
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: LOCUS Repositório Institucional da UFV
• Texto Completo: https://doi.org/10.1016/j.ibmb.2015.11.006; http://www.locus.ufv.br/handle/123456789/19236
• topic: Asopinae; N,N-Dimethylaniline; Hemiptera; Salivary glands; Venom; 1,2,5-Trithiepane

Podisus nigrispinus Dallas (Hemiptera: Pentatomidae) is a predator insect with potential applications in biological control because both nymphs and adults have been shown to prey on other insect pests by injection of toxic salivary gland contents. This study identified non-proteinaceous compounds with insecticidal activity from the saliva of P. nigrispinus in Anticarsia gemmatalis. In particular, the ether extract from P. nigrispinus saliva led to mortality in A. gemmatalis larvae, with a LC50 = 2.04 μL and LC90 = 3.27 μL. N,N-dimethylaniline and 1,2,5-trithiepane fractions were identified as non-proteinaceous extract components. N,N-dimethylaniline had a LC50 = 136.1 nL and LC90 = 413.8 nL, suggesting that it could be responsible for toxicity in P. nigrispinus saliva.