Sub Lethal Concentration
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Histopathological effect of sub-lethal concentration of aluminum phosphide (phostoxin) on Clarias gariepinus juveniles
Abtsract: The study evaluated the effect of sub-lethal concentration of phostoxin on Clarias gariepinus juveniles. C. gariepinus juveniles belonging to the same cohort (40.1±1.2g; 18.1±1.1cm) from a commercial fish farm were randomly placed ten in each of 15 plastic tanks containing 15 liters of water. They were exposed for 96 hrs to three sub-lethal conce
Pesq. Vet. Bras.. Publicado em: 2016-07
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2. Copper Induced Lysosomal Membrane Destabilisation in Haemolymph Cells of Mediterranean Green Crab (Carcinus aestuarii, Nardo, 1847) from the Narta Lagoon (Albania)
ABSTRACTDestabilisation of blood cell lysosomes in Mediterranean green crabCarcinus aestuarii was investigated using Neutral Red Retention Assay (NRRA). Crabs collected in Narta Lagoon, Vlora (Albania) during May 2014 were exposed in the laboratory to sub-lethal, environmentally realistic concentrations of copper. Neutral Red Retention Time (NRRT) and glucos
Braz. arch. biol. technol.. Publicado em: 2015-10
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3. Sub-lethal Effects of Diazinon on Hematological Indices and Blood Biochemical Parameters in Indian Carp, Cirrhinus mrigala (Hamilton)
Indian carp (Cirrhinus mrigala) exposed to two sub-lethal concentrations (0.815 mg/L and 1.63 mg/L) of diazinon for 30 days showed a significant decrease in erythrocyte count, hemoglobin concentration, hematocrit, mean corpuscular volume, mean corpuscular hemoglobin, plasma levels of total protein, albumin, globulin, activity of enzyme acetylcholinesterase a
Braz. arch. biol. technol.. Publicado em: 2014-12
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4. Hepatic Cytochrome P450 as Biomarkers of Cypermethrin Toxicity in Freshwater Teleost, Channa punctatus (Bloch)
In this study, Channa punctatus was treated with sub-lethal concentration of cypermethrin (6.6 µg/L) for 5, 10 and 15 days and its effect on total CYP 450 and the activity of hepatic CYP450 isoforms measured. Total CYP450 content and CYP1A mediated EROD activity was significantly induced (p<0.05) in all three treated groups compared to control whereas only
Braz. arch. biol. technol.. Publicado em: 29/08/2014
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5. Effects of sub-lethal exposure of lead acetate on histopathology of gills, liver, kidney and muscle and its accumulation in these organs of Clarias gariepinus
The aim of this work was to study the effects of sub-lethal exposure of lead acetate on the histopathology of the gills, liver, kidney and muscle and its accumulation in these organs of Clarias gariepinus. Results showed that lead accumulation in the tissues of C. gariepinus was dependent on the exposure period and lead concentration. Gills and liver were th
Braz. arch. biol. technol.. Publicado em: 2013-04
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6. Toxicidade da deltametrina (formulação Butox CE25) nas respostas cardio-respiratórias da tilápia-do-Nilo (Oreochromis niloticus)
Deltamethrin is a synthetic pyrethroid pesticide, type II, considered of low persistence in the environment and widely utilized in agriculture and aquaculture to control plagues and aquatic parasites respectivamently. In spite of it low toxicity in mammals, this pesticide can be extremely toxic for fish. In this study, we evaluate the effects of a sub-lethal
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/11/2011
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7. Toxicidade aguda e respostas metabólicas e hematológicas do pacu (Piaractus mesopotamicus, Holmberg, 1887) exposto a concentração sub-letal de triclorfon e recuperação
Parasitosis in fishes is a relevant problem in aquaculture. Besides, the organophosphate trichlorfon (2,2,2-trichloro-1-hydroxyethyl phosphonate) is amongst the most used medicine in farming of fishes. Due to trichlorfon use in fish parasitosis control, including pacu (Piaractus mesopotamicus), in brazilian and worldwide aquaculture, it is necessary to study
Publicado em: 2010
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8. Respostas fisiológicas e comportamentais de Sitophilus zeamais ao ozônio / Physiological and behavioral responses of Sitophilus zeamais to ozone
A utilização da atmosfera enriquecida com o ozônio (O3) tem sido apontada como uma das principais alternativas para o controle de insetos-praga de produtos armazenados. Embora os efeitos tóxicos do ozônio para os insetos já sejam conhecidos, são escassas as informações sobre os seus efeitos no comportamento das pragas. Este trabalho tem por objetivo
Publicado em: 2010
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9. Physiological changes in Biomphalaria glabrata say, 1818 (Pulmonata: Planorbidae) caused by sub-lethal concentrations of the latex of Euphorbia splendens var. hislopii N.E.B (Euphorbiaceae)
Molluscides have been used as one of the strategies to control schistosomiasis. Many plant extracts with molluscidal effects have been tested, but the action of the latex of Euphorbia splendens var. hislopii is considered the most promising because it meets the recommendations of the World Health Organization (WHO). The objective of this study was to determi
Memórias do Instituto Oswaldo Cruz. Publicado em: 2006-02
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10. Sub-lethal concentrations of monocrotophos affect aggressive behavior of the fishes Astyanax altiparanae Garutti & Britski (Teleostei, Characidae) and Oreochromis niloticus (Linnaeus) (Teleostei, Cichlidae)
This study investigated the effects of sublethal concentrations of the pesticide monocrotophos (organophosphate) on the agonistic behavior of two fishes species, Astyanax altiparanae Garutti & Britski, 2000 (lambari) and Oreochromis niloticus (Linnaeus, 1758) (Nile tilapia). Sublethal concentrations of the pesticide for the two species were determined and la
Revista Brasileira de Zoologia. Publicado em: 2002-12
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11. Effect of diflubenzuron on immature stages of Haematobia irritans (L.) (Diptera: Muscidae) in Uberlândia, State of Minas Gerais, Brazil
Horn fly immatures were raised in media containing different concentrations of diflubenzuron in order to verify their susceptibility to this insect growth regulator (IGR). The 50% and 95% lethal concentrations of diflubenzuron for the population (LC50, LC95) were determined as well as the effect of this IGR on the different immature horn fly stages. The test
Memórias do Instituto Oswaldo Cruz. Publicado em: 2002-07
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12. Temperature and metabolic changes in rats after various doses of tumour necrosis factor alpha.
1. Sub-lethal doses of recombinant of tumour necrosis factor alpha (TNF alpha) were administered i.v. to young conscious male Wistar rats. Temperature changes and alterations in serum zinc and albumin concentrations and weight and composition of liver, kidney, spleen, tibialis muscle and skin were measured. Temperatures were monitored for 8 h and tissue para