Irradiation-induced sterility in an egg parasitoid and possible implications for the use of biological control in insect eradication.
Sci Rep
; 11(1): 12326, 2021 06 10.
Article
en En
| MEDLINE
| ID: mdl-34112932
ABSTRACT
Classical biological control is a pest control tool involving the release of imported natural enemies. The Sterile Insect Technique (SIT) comprises releasing sexually sterile insects of a pest into the wild population for suppression or eradication. Both these approaches are environmentally friendly and their combination can result in a synergistic impact on pest populations and improve eradication. However, stringent regulation surrounding the introduction of biological control agents limits their use in eradication owing to the perceived risk of effects on non-target organisms. We investigated the irradiation biology of the egg parasitoid Trissolcus basalis to ascertain whether sterile parasitoids could mitigate the risk of potential sustained non-target impacts. Mated female T. basalis were gamma-irradiated at doses between 120 and 150 Gy and exposed to egg masses of their host Nezara viridula throughout their lifespans. This resulted in host mortality, despite a substantial reduction in developing parasitoid offspring, which followed a negative dose-response. There was no emergence of parasitoid offspring at 140 Gy and above. Irradiation did not affect oviposition behaviour but caused an increase in longevity. Consequently, sterile parasitoids could possibly alleviate concerns regarding the irreversibility of biological control release, which promotes further investigation of their potential role in eradication.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Contexto en salud:
1_ASSA2030
/
2_ODS3
/
6_ODS3_enfermedades_notrasmisibles
Problema de salud:
1_doencas_nao_transmissiveis
/
2_enfermedades_transmissibles
/
6_endocrine_disorders
Asunto principal:
Óvulo
/
Control Biológico de Vectores
/
Infertilidad
/
Infertilidad Femenina
/
Longevidad
Tipo de estudio:
Etiology_studies
Límite:
Animals
Idioma:
En
Revista:
Sci Rep
Año:
2021
Tipo del documento:
Article
País de afiliación:
Nueva Zelanda