Acute Toxicity Assessment of New Algicide, Thiazolidinedione Derivative (TD53) to Marine Ecosystem

임은채,; 신준재,; 박인택,; 한효경,; 김시욱,; 조훈,; 김성준,

doi:10.7841/ksbbj.2011.26.1.007

Cited by 3 publications

(3 citation statements)

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“…The acute toxicity assessment results for the two species of subject organisms were adjusted to a constant assessment factor of 100 to derive the PNEC and NOEC [6,9]. …”

Section: Methodsmentioning

confidence: 99%

“…If only limited toxicity data were obtained from the toxicity assessment of chemical substances in the OECD, a constant assessment factor was used in each extrapolation stage to predict the PNEC of the ecosystem. The acute toxicity assessment results for the two species of subject organisms were adjusted to a constant assessment factor of 100 to derive the PNEC and NOEC [ 6 , 9 ].…”

Section: Methodsmentioning

confidence: 99%

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Acute toxicity assessment of camphor in biopesticides by using Daphnia magna and Danio rerio

Yim

Kim

2014

Environ Health Toxicol

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ObjectivesAn ecofriendly alternative to chemical pesticides is bio-pesticides, which are derived from natural sources. The interest in bio-pesticides is based on the disadvantages associated with chemical pesticides.MethodsWe conducted acute toxicity assessments of camphor, a major component of bio-pesticides, by using Daphnia magna (D. magna) as well as assessed the morphological abnormalities that occurred in Danio rerio (D. rerio) embryos.ResultsThe median effective concentration of camphor on D. magna after 48 hours was 395.0 μM, and the median lethal concentration on D. rerio embryos after 96 hours was 838.6 μM. The no observed effect concentration and predicted no effect concentration of camphor on D. magna, which was more sensitive than D. rerio, were calculated as 55.2 μM and 3.95 μM, respectively. Morphological abnormalities in D. rerio embryos exposed to camphor increased over time. Coagulation, delayed hatching, yolk sac edema, pericardial edema, and pigmentation of embryos mainly appeared between 24 and 48 hours. Further, symptoms of scoliosis and head edema occurred after 72 hours. In addition, bent tails, ocular defects and collapsed symptoms of fertilized embryonic tissue were observed after 96 hours.ConclusionsThe camphor toxicity results suggest that continuous observations on the ecosystem are necessary to monitor toxicity in areas where biological pesticides containing camphor are sprayed.

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“…The acute toxicity assessment results for the two species of subject organisms were adjusted to a constant assessment factor of 100 to derive the PNEC and NOEC [6,9]. …”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Acute toxicity assessment of camphor in biopesticides by using Daphnia magna and Danio rerio

Yim

Kim

2014

Environ Health Toxicol

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show abstract

Section: Methodsmentioning

confidence: 99%

Acute toxicity assessment of Osthol content in bio-pesticides using two aquatic organisms

Yim

Kim

2014

Environ Health Toxicol

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ObjectivesThis study focused on the assessment of acute toxicity caused by Osthol, a major component of environment-friendly biological pesticides, by using two aquatic organisms.MethodsThe assessment of acute toxicity caused by Osthol was conducted in Daphnia magna and by examining the morphological abnormalities in Danio rerio embryos.ResultsThe median effective concentration value of Osthol in D. magna 48 hours after inoculation was 19.3 μM. The median lethal concentration of D. rerio embryo at 96 hours was 30.6 μM. No observed effect concentration and predicted no effect concentration values of Osthol in D. magna and D. rerio were calculated as 5.4 and 0.19 μM, respectively. There was an increase in the morphological abnormalities in D. rerio embryo due to Osthol over time. Coagulation, delayed hatching, yolk sac edema, pericardial edema, and pigmentation were observed in embryos at 24–48 hours. Symptoms of scoliosis and head edema occurred after 72 hours. In addition, bent tails, ocular defects, and symptoms of collapse were observed in fertilized embryo tissue within 96 hours. Ocular defects and pigmentation were the additional symptoms observed in this study.ConclusionsBecause Osthol showed considerable toxicity levels continuous toxicity evaluation in agro-ecosystems is necessary when bio-pesticides containing Osthol are used.

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Assessment of New Algicide Thiazolidinedione (TD49) for the Control of Marine Red Tide Organisms

Baek¹,

Jang

Joo³

et al. 2012

The Sea

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Worldwide development of harmful algal blooms causes serious problem for public health and fisheries industries. To evaluate the algicidal impact on the harmful algae bloom species in aquatic ecosystems of coast, a new algicide thiazolidinedione derivative (TD49) were tentatively examined in the growth stages (i.e., lag, logarithmic and stationary phase) of rapidophyceae Heterosigma akashiwo, Chattonella marina and Chattonella sp..Three strains could easily destroy in the lag phase due to relatively weak cell walls than those of the logarithmic and stationary phase. It is thought that inoculation of TD49 substances into initial or developmental natural blooms with a threshold concentration (2 µM) can maximize the algicidal activity. Also, bio-chemical assays revealed that the algicidal substances from all culture strains were likely to be extracellular substances because those cells have easily destroyed in cell walls. On the other hand, natural zooplankton communities were influenced within the exposure experiments of 2 µM, which is showed the maximum algcidal activity of tested organisms. These results indicate that although the TD49 substance is potential agents for the control of H. akashiwo, C. marina and Chattonella sp. in the enclosed eutrophic bay and coastal water, more detailed research of acute toxicity effect on high trophic organism in marine ecosystems need to be conducted.

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Acute Toxicity Assessment of New Algicide, Thiazolidinedione Derivative (TD53) to Marine Ecosystem

Cited by 3 publications

References 9 publications

Acute toxicity assessment of camphor in biopesticides by using <i>Daphnia magna</i> and <i>Danio rerio</i>

Acute toxicity assessment of camphor in biopesticides by using <i>Daphnia magna</i> and <i>Danio rerio</i>

Acute toxicity assessment of Osthol content in bio-pesticides using two aquatic organisms

Assessment of New Algicide Thiazolidinedione (TD49) for the Control of Marine Red Tide Organisms

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Acute Toxicity Assessment of New Algicide, Thiazolidinedione Derivative (TD53) to Marine Ecosystem

Cited by 3 publications

References 9 publications

Acute toxicity assessment of camphor in biopesticides by using &lt;i&gt;Daphnia magna&lt;/i&gt; and &lt;i&gt;Danio rerio&lt;/i&gt;

Acute toxicity assessment of camphor in biopesticides by using &lt;i&gt;Daphnia magna&lt;/i&gt; and &lt;i&gt;Danio rerio&lt;/i&gt;

Acute toxicity assessment of Osthol content in bio-pesticides using two aquatic organisms

Assessment of New Algicide Thiazolidinedione (TD49) for the Control of Marine Red Tide Organisms

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Product

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Acute toxicity assessment of camphor in biopesticides by using <i>Daphnia magna</i> and <i>Danio rerio</i>

Acute toxicity assessment of camphor in biopesticides by using <i>Daphnia magna</i> and <i>Danio rerio</i>