Consulta: subjectFacets:"Sublethal effects"
Registros recuperados: 8
Data/hora: 16/06/2024 17:35:28

Toxicidad de insecticidas sobre Catolaccus hunteri Crawford (Hymenoptera: Pteromalidae) parasitoide de Anthonomus eugenii Cano (Coleoptera: Curculionidae).
Provedor de dados: 32
Autores: Murillo Hernández, Juan Eduardo.
Cuando no se puede evitar el uso de insecticidas es recomendable que la propuesta de manejo de sus plagas incluya el efecto de dichos insecticidas sobre los enemigos naturales (EN). En el presente estudio se evaluó el efecto de la residualidad y la toxicidad letal y subletal de los insecticidas beta-cyfluthrin, bifenazate, clorantraniliprol, flonicamid, spirotetramat y thiametoxam sobre Catolaccus hunteri, un ectoparasitoide del picudo del chile, Anthonomus eugenii. En las evaluaciones se empleó el método de contacto residual, se utilizaron discos foliares de plantas de chile como superficies de exposición. Se encontró diferencia significativa en la toxicidad letal, según la clasificación de la IOBC, thiametoxam resultó moderadamente nocivo (98% de...
Palavras-chave: Picudo del chile; Control biológico; Enemigos naturales; Plaguicidas; Efectos subletales; Pepper weevil; Biological control; Natural enemies; Pesticides; Sublethal effects; Entomología y Acarología; Maestría.
Ano: 2014
URL: http://hdl.handle.net/10521/2321

Milieu vivant: Synthese des discussions
Provedor de dados: 5
Autores: Retiere, C.
After a general note the author reports the effects of pollutants in organisms, in particular, sublethal effects and bioaccumulation.
Tipo: Text
Palavras-chave: Estuarine organisms; Sublethal effects; Environmental impact; Estuaries; Bioaccumulation; Pollution effects; Brackishwater pollution.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1311.pdf

Effets létaux et sublétaux à long terme d'un nonylphénol polyéthoxyle, le NP 5 sur la civelle
Provedor de dados: 5
Autores: Bocquene, Gilles; Miossec, Laurence.
Studying different concentrations, we have determined LT 50 of a non-ionic surfactant on elver eel: the polyoxyethylated nonylphenol NP 5. Then we studied sorne sublethal effects on fish behaviour and histological effects on gills, during 21 days. We demonstrated primary effects on gills structure and we believe in an impairing of the central nervous system.
Tipo: Text
Palavras-chave: Anguille; Tensio-actifs; Effets subletaux; Branchies; Eel; Surfactant; Sublethal effects; Behaviour; Gills.
Ano: 1987
URL: http://archimer.ifremer.fr/doc/00156/26705/24780.pdf

Toxicite aigue et effets subletaux, apres une courte exposition, de differents nonyphenols polyethoxyles sur la civelle.
Provedor de dados: 5
Autores: Miossec, Laurence; Bocquene, Gilles.
The non-ionic surfactant group, polyethoxylated nonylphenols, show a toxicity to elvers in inverse relation to the number of ethylene oxide groups in the molecule. Their short-term effects on elver gills include much tissue disorganization and destruction.
Tipo: Text
Palavras-chave: Molecular structure; Sublethal effects; Toxicity; Detergents; Surfactants.
Ano: 1984
URL: http://archimer.ifremer.fr/doc/1984/publication-1791.pdf

La detection des effets subletaux des pollutions: Utilisation in situ d'un indice biochimique, la charge energetique
Provedor de dados: 5
Autores: Sylvestre, C; Batrel, Y; Legal, Y.
Marine water management implies the provision of environmental evolution. This can be seen with tests giving information on organism health. After a presentation of biochemical parameters (energetic charge) the authors describe the technique used and the results obtained with Nassarius reticulatus and Crangon crangon . In practice, the evolution of ratio of energetic charge to total nucleotides is a signal of imbalance in the ecosystem.
Tipo: Text
Palavras-chave: Nassarius reticulatus; Gastropoda; Crangon crangon; Malacostraca; Biochemical analysis; Nucleotides; In situ measurements; Estuarine organisms; Sublethal effects; Pollution tolerance.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1306.pdf

Les variations quantitatives des carotenoides de la macrofaune benthique en Baie de Seine, ont-elles des relations avec la pollution ou l'ecologie des especes?
Provedor de dados: 5
Autores: Noel, Philippe; Merlin, J; Lafage-szydlowski, S; Hubert, M; Chassard-bouchaud, C.
Macular skin affects in relation to pollution have been displayed, but the analysis shows carotenoid variations between organisms living in rocky bottom or in muddy sand area.
Tipo: Text
Palavras-chave: Sublethal effects; Ecology; Pollution tolerance; Pollution effects; Benthos; Carotenoids.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-1308.pdf

Biological parameters of Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) assayed with Bacillus thuringiensis berliner
Provedor de dados: 63
Autores: Polanczyk,Ricardo Antonio; Alves,Sérgio Batista.
The bacterium Bacillus thuringiensis (Bt) is a promising control agent of Spodoptera frugiperda (J.E. Smith). Besides the lethal effect on hosts, the entomopathogen may cause physiological alterations that hinder insects' feeding intake and reproduction. Larval and female pupa weight, oviposition and egg fecundity were determined in second instar S. frugiperda larvae infected with 39 Bt isolates in four bioassays. Sublethal effects were observed in the follow isolates: ESALQ 1.1, ESALQ 1.4, ESALQ 1.6, ESALQ 3.7, ESALQ 4.2 and ESALQ 5.2 (larval and female pupae weight); ESALQ 5.1 (larval weight); ESALQ 1.2 and ESALQ 3.7 (egg fecundity); ESALQ 3.7 (oviposition and egg fecundity); ESALQ 3.7 and ESALQ 5.2 (oviposition). Significant correlations were observed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Entomopathogen; Fall armyworm; Sublethal effects.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000500009

Acute and chronic toxicity of the benzodiazepine diazepam to the tropical crustacean Mysidopsis juniae
Provedor de dados: 42
Autores: SILVA,ALLYSON Q. DA; NILIN,JEAMYLLE; LOUREIRO,SUSANA; COSTA-LOTUFO,LETICIA V.
Abstract  Pharmaceuticals occur in the environment due to their excessive consumption and the inefficiency of treatment plants to degrade, inactivate or remove them. Diazepam (DZP) stands out as the most consumed benzodiazepine, and induces sedative effects and reduces anxiety. Considering its potential appearance in several environmental compartments, the aim of the present study was to determine the effects of DZP under acute and chronic exposures on the mysid Mysidopsis juniae. Mortality was assessed using an acute toxicity test and a LC50 of 3.7 ± 0.5 mg·L-1was derived. The mass and length of the mysids was recorded in the chronic exposure to test for sublethal effects, and concentrations of 0.25 and 0.5 mg·L-1 of DZP affected mysids length and dry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Emerging contaminants; Mysids; Sublethal effects; Pharmaceuticals.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652020000100713