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
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...
Guardado en:
| Autores principales: | , , , , , |
|---|---|
| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2016
|
| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/103064 |
| Aporte de: |
| id |
I19-R120-10915-103064 |
|---|---|
| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Biología Eriopis connexa Insecticides selectivity Lethal effects Sublethal effects |
| spellingShingle |
Biología Eriopis connexa Insecticides selectivity Lethal effects Sublethal effects Fogel, Marilina Noelia Schneider, Marcela Inés Rimoldi, Federico Ladux, Lorena Sabrina Desneux, Nicolas Ronco, Alicia Estela 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 |
| topic_facet |
Biología Eriopis connexa Insecticides selectivity Lethal effects Sublethal effects |
| description |
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. |
| format |
Articulo Articulo |
| author |
Fogel, Marilina Noelia Schneider, Marcela Inés Rimoldi, Federico Ladux, Lorena Sabrina Desneux, Nicolas Ronco, Alicia Estela |
| author_facet |
Fogel, Marilina Noelia Schneider, Marcela Inés Rimoldi, Federico Ladux, Lorena Sabrina Desneux, Nicolas Ronco, Alicia Estela |
| author_sort |
Fogel, Marilina Noelia |
| title |
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 |
| title_short |
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 |
| title_full |
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 |
| title_fullStr |
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 |
| title_full_unstemmed |
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 |
| title_sort |
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 |
| publishDate |
2016 |
| url |
http://sedici.unlp.edu.ar/handle/10915/103064 |
| work_keys_str_mv |
AT fogelmarilinanoelia toxicityassessmentoffourinsecticideswithdifferentmodesofactiononpupaeandadultsoferiopisconnexacoleopteracoccinellidaearelevantpredatoroftheneotropicalregion AT schneidermarcelaines toxicityassessmentoffourinsecticideswithdifferentmodesofactiononpupaeandadultsoferiopisconnexacoleopteracoccinellidaearelevantpredatoroftheneotropicalregion AT rimoldifederico toxicityassessmentoffourinsecticideswithdifferentmodesofactiononpupaeandadultsoferiopisconnexacoleopteracoccinellidaearelevantpredatoroftheneotropicalregion AT laduxlorenasabrina toxicityassessmentoffourinsecticideswithdifferentmodesofactiononpupaeandadultsoferiopisconnexacoleopteracoccinellidaearelevantpredatoroftheneotropicalregion AT desneuxnicolas toxicityassessmentoffourinsecticideswithdifferentmodesofactiononpupaeandadultsoferiopisconnexacoleopteracoccinellidaearelevantpredatoroftheneotropicalregion AT roncoaliciaestela toxicityassessmentoffourinsecticideswithdifferentmodesofactiononpupaeandadultsoferiopisconnexacoleopteracoccinellidaearelevantpredatoroftheneotropicalregion |
| bdutipo_str |
Repositorios |
| _version_ |
1764820441422102529 |