Toxicity assessment of four insecticides with different modes of action on pupae and adults of Eriopis connexa (Coleoptera: Coccinellidae), a relevant predator of the Neotropical Region

Autor: Alicia Estela Ronco, Federico Rimoldi, Marcela Inés Schneider, Nicolas Desneux, Marilina Noelia Fogel, Lorena Sabrina Ladux
Přispěvatelé: Universidad Nacional de la Plata [Argentine] (UNLP), Institut Sophia Agrobiotech (ISA), Centre National de la Recherche Scientifique (CNRS)-Université Nice Sophia Antipolis (... - 2019) (UNS), COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-COMUE Université Côte d'Azur (2015-2019) (COMUE UCA)-Institut National de la Recherche Agronomique (INRA), Argentine National Agency for the Promotion of Science and Technology (ANPCyT-FONCyT) [PICT 2010-0891-, PICT 2011-1752-BID], National Council of Scientific and Technical Research (CONICET)
Jazyk: angličtina
Rok vydání: 2016
Předmět:
Zdroj: Environmental Science and Pollution Research
Environmental Science and Pollution Research, Springer Verlag, 2016, 23 (15), pp.14918-14926. ⟨10.1007/s11356-016-6654-9⟩
SEDICI (UNLP)
Universidad Nacional de La Plata
instacron:UNLP
ISSN: 0944-1344
1614-7499
DOI: 10.1007/s11356-016-6654-9⟩
Popis: Pesticides can be toxic to nontarget organisms including the natural enemies of agricultural pests, thus reducing the biodiversity of agroecosystems. The lethal and sublethal effects of four insecticides with different modes of action— pyriproxyfen, teflubenzuron, acetamiprid, and cypermethrin— were evaluated on pupae and adults of Eriopis connexa, an effective predator in horticultural crops. Pupal survival was reduced by pyriproxyfen (26 %) and cypermethrin (41 %). Malformations in adults emerged from treated pupae were observed after acetamiprid (82.7 and 100 % for 100 and 200 mg a.i./l, respectively), pyriproxyfen (48.6 %), and cypermethrin (13.3 %) treatments. A longer mean oviposition time was also observed in adults emerged from pupae treated with cypermethrin. Moreover, the latter insecticide as well as teflubenzuron did not reduce reproductive parameters, whereas females emerged from pyriproxyfen-treated pupae were not be able to lay eggs even when females showed large abdomens. Upon exposure of adults, survival was reduced to approximately 90 % by acetamiprid, but no reduction occurred with pyriproxyfen, teflubenzuron, or cypermethrin though the fecundity at fifth oviposition time of the female survivors was reduced. Pyriproxyfen decreased the hatching at all the oviposition times tested, whereas fertility was reduced in the fourth and fifth ovipositions by teflubenzuron and in the first and third ovipositions by cypermethrin. In conclusion, all four insecticides tested exhibited lethal or sublethal effects, or both, on E. connexa. The neurotoxic insecticides were more harmful than the insect-growth regulators, and pupae were more susceptible than adults. The toxicity of insecticides on the conservation of predators in agroecosystems of the Neotropical Region is discussed.
Centro de Estudios Parasitológicos y de Vectores
Centro de Investigaciones del Medioambiente
Databáze: OpenAIRE
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