Your browser doesn't support javascript.
loading
Sex-dependent locomotion and physiological responses shape the insecticidal susceptibility of parasitoid wasps.
Andreazza, Felipe; Haddi, Khalid; Nörnberg, Sandro D; Guedes, Raul Narciso C; Nava, Dori E; Oliveira, Eugênio E.
Afiliación
  • Andreazza F; Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil; Departament of Entomology, Michigan State University, East Lansing, MI, 48823, USA.
  • Haddi K; Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil; Departamento de Entomologia, Universidade Federal de Lavras, Lavras, MG, 37200-000, Brazil.
  • Nörnberg SD; Embrapa Clima Temperado, Laboratory of Entomology, Pelotas, RS, 96010-971, Brazil.
  • Guedes RNC; Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil.
  • Nava DE; Embrapa Clima Temperado, Laboratory of Entomology, Pelotas, RS, 96010-971, Brazil.
  • Oliveira EE; Departamento de Entomologia, Universidade Federal de Viçosa, Viçosa, MG, 36570-900, Brazil; Departament of Entomology, Michigan State University, East Lansing, MI, 48823, USA. Electronic address: eugenio@ufv.br.
Environ Pollut ; 264: 114605, 2020 Sep.
Article en En | MEDLINE | ID: mdl-32380390
The adaptive fitness of insect species can be shaped by how males and females respond, both physiologically and behaviorally, to environmental challenges, such as pesticide exposure. In parasitoid wasps, most toxicological investigations focus only on female responses (e.g., survival and especially parasitism abilities), leaving the male contributions to adaptive fitness (survival, locomotion, mate search) poorly investigated. Here, we evaluated the toxicity of the spinosyn insecticide spinosad against the South American fruit fly, Anastrepha fraterculus, and we used the parasitoid wasp Diachasmimorpha longicaudata (Ashmead) to evaluate whether sex-linked locomotory and physiological responses would influence the susceptibility of these organisms to spinosad. Our results revealed that D. longicaudata males were significantly more susceptible (median lethal time (LT50) = 24 h) to spinosad than D. longicaudata females (LT50 = 120 h), which may reflect the differences in their locomotory and physiological (e.g., respiratory) responses to mitigate insecticide exposure. Compared to D. longicaudata females, male wasps were lighter (P < 0.001), walked for longer distances (P < 0.001) and periods (P < 0.001), and exhibited higher sensilla densities in their tarsi (P = 0.008), which may facilitate their intoxication with the insecticide. These findings indicate that male parasitoids should not be exempt from insecticide selectivity tests, as these organisms can be significantly more affected by such environmental challenges than their female conspecifics.
Asunto(s)
Palabras clave

Texto completo: 1 Base de datos: MEDLINE Asunto principal: Avispas / Tephritidae / Insecticidas Límite: Animals Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos

Texto completo: 1 Base de datos: MEDLINE Asunto principal: Avispas / Tephritidae / Insecticidas Límite: Animals Idioma: En Revista: Environ Pollut Asunto de la revista: SAUDE AMBIENTAL Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos