Comparison of social behavior responses of Japanese medaka (Oryzias latipes) to lethal and sublethal chlorpyrifos concentrations at different exposure times

Khalil, Fatma; Qiu, Xuchun; Kang, Ik Joon; Abo-Ghanema, Ismail I.; Shimasaki, Yohei; Oshima, Yuji

doi:10.1016/j.ecoenv.2017.07.007

Cited by 25 publications

(13 citation statements)

References 38 publications

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“…The feeding behaviour of tilapia was observed in each tank visually and noted down. A smartphone was used to record the behaviour of the fish following standard methods (Khalil et al, ): Feeding: frequency and duration (s) spent in feeding. Swimming: frequency and duration (s) spent in swimming Aggression: frequency and duration (s) spent in attacking each other Rest: frequency and duration (s) spent by fish completely immobile and rest on the bottom of tank Arousal: frequency and duration (s) spent by fish with locomotor activity Fish coming to surface of the aquaria: frequency and duration (s) spent by fish hanging around on the top of the tank. …”

Section: Methodsmentioning

confidence: 99%

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Replacement of soya bean meal with cashew nut meal as an alternative protein source in the diet of tilapia, Oreochromis mossambicus

et al. 2020

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An experiment was conducted to replace soya bean meal (SBM) with cashew nut meal (CNM) in the diet of tilapia (Oreochromis mossambicus). Five isonitrogenous (30% CP) and isolipidic (6% CL) diets, CNM0 to CNM4, were prepared replacing SBM at 0%, 12.5%, 25%, 37.5% and 50% with CNM. The feeding trial was conducted in FRP digestibility tanks of 150 L capacity for 60 days. Twenty tilapia fry (20.56 ± 0.05 g) were stocked in each tank. The final weight, weight gain and weight gain% of tilapia that received the CNM4 diet were significantly higher (p < .01) among the treatments. The significantly higher nutrient utilization efficiency in terms of FCR, PER, PRE and LRE was obtained in the CNM4 group. Similarly, a significantly lower (p < .01) body moisture content and a significantly higher (p < .05) body protein content were also observed in the CNM4 diet‐fed group. In tilapia fed the CNM4 diet, the activity of both protease and amylase enzymes was significantly higher (p < .05), but the amylase:protease ratio (A:P) was significantly lower (p < .05). Protease, amylase and A:P were positively correlated with the nutrient digestibility coefficient. The serum protein, albumin and globulin of tilapia fed the CNM4 diet were significantly higher (p < .05) and the liver status enzymes did not vary (p > .05) among the treatments. It can be concluded from the study that 50% replacement of SBM with CNM in the diet is suitable for the enhancement of growth, nutrient utilization and health status of tilapia.

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Section: Methodsmentioning

confidence: 99%

Section: Behaviour Of Tilapia During Experimentsmentioning

confidence: 99%

Replacement of soya bean meal with cashew nut meal as an alternative protein source in the diet of tilapia, Oreochromis mossambicus

et al. 2020

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“…Behavioral responses based on speed of movement can also be interpreted differently, with opposing ecological consequences: a reduction in movement can be caused either by a lethargic response due to a toxicant or by reduced stress (Díaz‐Gil et al ). In addition, it was observed that hypoactivity occurred in the fish Oryzias latipes after exposure to lethal concentrations during the short term, but that after exposure to sublethal concentrations in the long term, the fish responded with hyperactivity (Khalil et al ). Even when they are measured under forced exposure systems, behavioral responses have been shown to be sensitive indicators of environmental hazards.…”

Section: Spatial Avoidance and Habitat Preference Versus Behavioral Ementioning

confidence: 99%

Spatial avoidance as a response to contamination by aquatic organisms in nonforced, multicompartmented exposure systems: A complementary approach to the behavioral response

Araújo¹,

Blasco²

2018

Enviro Toxic and Chemistry

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The idea that the hazard of contaminants is exclusively related to their toxic effects does not consider the fact that some organisms can avoid contamination, preventing toxicity. Although inferences about avoidance are made in most behavioral ecotoxicology studies, assessment of the real spatial displacement (organisms moving toward another habitat to escape contamination) is difficult due to the type of exposure (confined and mandatory) used in the bioassays: a forced exposure approach. A complementary approach using nonforced exposure systems to assess how contaminants affect the spatial distribution of organisms in a bicompartmented (toxic or nontoxic) environment has long been described. Recently, this nonforced approach has been developed to include a multi compartmented system in which different samples can be simultaneously tested. The aim of the present review was to describe the importance of the nonforced, multicompartmented exposure approach to simulate a gradient or patches of contamination, to describe the 2 main exposure systems, and to highlight the ecological relevance of including spatial avoidance and habitat preference in ecotoxicological studies. The multicompartmentalization of the system makes it possible to simulate more complex scenarios and therefore include new ecological concepts in bioassays. We also contrasted spatial avoidance in the nonforced exposure systems with the behavioral endpoints measured under other exposure systems. Finally, we showed that the nonforced, multicompartmented exposure approach makes it possible 1) to improve environmental risk assessments by adding the dispersion pattern of organisms in a multihabitat scenario, and 2) to integrate ecological concepts such as recolonization of recovering habitats, loss of habitat connectivity, habitat fragmentation, and contamination-driven metapopulation, which have received limited attention in ecotoxicological studies. Environ Toxicol Chem 2019;38:312-320. C 2018 SETAC

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“…Chlorpyrifos [O,O-diethyl-O-(3,5,6-trichloro-2-pyridinyl) phosphorothionate] (CAS Number 2921-88-2) (Fig 1), is an OP insecticide widely used in Colombia for agricultural and domestic pest control, but this also results in non-targeted organisms being exposed to either lethal or sublethal concentrations of this contaminant [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

“…Once chlorpyrifos reaches target organisms, an oxidative desulfuration of the P = S moiety to P = O occurs, a reaction which is catalyzed by cytochrome P-450 (CYP 1A1) (Phase I), resulting in the toxic intermediate chlorpyrifos-oxon, which can inhibit AChE activity. In additon, chlorpyrifos can undergo dearylation while catalyzed by CYP1A1, resulting in 3,5,6-trichloro-2-pyridinol (TCP), or conjugation by glutathion-S-transferases (GST), sulfotransferases and glucuronil-transferases to form the corresponding glutathion, glucuronide and sulfate conjugates (detoxification) [9,10]. The pathways of chlorpyrifos in shrimp are shown in Fig 2. The antioxidant defense system includes enzymes such as catalase (CAT), glutathion peroxidase (GPx) and glutathione S-transferase (GST) [14].…”

Section: Introductionmentioning

confidence: 99%

Effects of chlorpyrifos on the crustacean Litopenaeus vannamei

2020

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Shrimps can be used as indicators of the quality of aquatic systems exposed to a variety of pollutants. Chlorpyrifos is one of the most common pesticides found in environmental samples. In order to evaluate the effects of chlorpyrifos, adult organisms of Litopenaeus vannamei were exposed to two sublethal concentrations of the pesticide (0.7 and 1.3 μg/L) for four days. The LC 50 (96-hours) value was determined and Lipid oxidation levels (LPO) and the activities of catalase (CAT), glutathion peroxidase (GPx), glutathion-S-transferase (GST) were assessed on the muscle, hepatopancreas and gills from the exposed organisms. In addition, inhibition of acetylcholinesterase (AChE) was determined in the brain. LC 50 (96hours) was 2.10 μg/L of chlorpyrifos. Catalase activity and LPO were elevated in the three tissues, whereas a decrease of AChE activities in the brain and an increase of GST activity in the hepatopancreas were observed.

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Comparison of social behavior responses of Japanese medaka (Oryzias latipes) to lethal and sublethal chlorpyrifos concentrations at different exposure times

Cited by 25 publications

References 38 publications

Replacement of soya bean meal with cashew nut meal as an alternative protein source in the diet of tilapia, Oreochromis mossambicus

Replacement of soya bean meal with cashew nut meal as an alternative protein source in the diet of tilapia, Oreochromis mossambicus

Spatial avoidance as a response to contamination by aquatic organisms in nonforced, multicompartmented exposure systems: A complementary approach to the behavioral response

Effects of chlorpyrifos on the crustacean Litopenaeus vannamei

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