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dc.creatorde Menezes,Claubert W.G
dc.creatorSoares,Marcus A
dc.creatorFonseca,Arley J
dc.creatordos Santos,José B
dc.creatorCamilo,Silma da S
dc.creatorZanuncio,José C
dc.date2014-09-01
dc.date.accessioned2019-04-24T21:19:57Z
dc.date.available2019-04-24T21:19:57Z
dc.identifierhttps://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-58392014000300016
dc.identifier.urihttp://revistaschilenas.uchile.cl/handle/2250/55923
dc.descriptionThe diversity of plants in agricultural systems benefits natural enemies. Herbicides are used in weed management in corn (Zea mays L.) to reduce competition and productivity losses, but they can impact natural enemies and contaminate the environment. The objective was to evaluate toxicity of herbicides on pupae parasitoid Palmistichus elaeisis Delvare and LaSalle, 1993 (Hymenoptera: Eulophidae). The treatments were represented by the host pupae Tenebrio molitor L., 1785 (Coleoptera: Tenebrionidae) and herbicides atrazine, nicosulfuron, paraquat, and tembotrione in commercial doses compared to a control treatment with water. Pupae of T. molitor were immersed in the solution of herbicides and exposed to parasitism by six females of P. elaeisis each. The herbicides atrazine and paraquat were highly toxic and, therefore, not selective to P. elaeisis. Nicosulfuron reduced the sex ratio of P. elaeisis (0.20 ± 0.03), which may affect subsequent generations. Moreover, the herbicide tembotrione was selective to P. elaeisis, showing results comparable to the control. Floristic diversity of weeds can increase food source, habitat, shelter, breeding places and microclimates for insect parasitoids but herbicides formulations can be toxic and these products can affect P. elaeisis or its hosts by direct or indirect contact, showing the importance of selectivity studies for this natural enemy. However, the herbicide tembotrione was selective to P. elaeisis and it can be recommended for programs of sustainable management of weeds in corn crop with this parasitoid.
dc.formattext/html
dc.languageen
dc.publisherInstituto de Investigaciones Agropecuarias, INIA
dc.relation10.4067/S0718-58392014000300016
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourceChilean journal of agricultural research v.74 n.3 2014
dc.subjectEcotoxicology
dc.subjectlepidopteran defoliators
dc.subjectparasitoids
dc.subjectpesticides
dc.subjectweed control
dc.subjectZea mays
dc.titlePalmistichus elaeisis (Hymenoptera: Eulophidae) as an indicator of toxicity of herbicides registered for corn in Brazil


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