Japanese journal of environmental toxicology最新文献_第2页

Japanese journal of environmental toxicology Pub Date : 2016-06-30 DOI: 10.11403/JSET.19.19

M. Sakaizumi

引用次数: 0

Comparative study of toxicological responses of chlorophyllrelated parameters in the marine diatom Skeletonema sp. exposed to tributyltin and Irgarol 三丁基锡和Irgarol对海洋硅藻骷髅藻叶绿素相关参数的毒理学反应比较研究

Japanese journal of environmental toxicology Pub Date : 2015-06-01 DOI: 10.11403/JSET.18.1

Y. Shimasaki, M. Tsuyama, Rumana Tasmin, Mst Ruhina Margia Khanam, Xuchun Qiu, Y. Oshima

{"title":"Comparative study of toxicological responses of chlorophyllrelated parameters in the marine diatom Skeletonema sp. exposed to tributyltin and Irgarol","authors":"Y. Shimasaki, M. Tsuyama, Rumana Tasmin, Mst Ruhina Margia Khanam, Xuchun Qiu, Y. Oshima","doi":"10.11403/JSET.18.1","DOIUrl":"https://doi.org/10.11403/JSET.18.1","url":null,"abstract":"− 1 − ABSTRACT We investigated the growth and chlorophyll-related parameters of the marine diatom Skeletonema marinoi-dohrnii complex (NIES-324) exposed to tributyltin (TBT) or photosystem (PS) II inhibitor Irgarol as a reference chemical for elucidating the effect of TBT on photosynthetic activity. Fifty percent effective concentrations for growth (EC50) were 2.14 μg/L in TBT and 1.14 μg/L in Irgarol. Chlorophyll a content per one cell (pg/cell) was significantly decreased at the highest Irgarol concentration (1.0 μg/L) but chlorophyll c content was not affected. Following TBT treatment, however, both chlorophyll a and c content per cell increased significantly at the highest concentration (2.0 μg/L). The ratio of chlorophyll a and c content (chl. a/c ratio) decreased significantly and the minimum level of chlorophyll fluorescence (Fo) per μg/ mL of chlorophyll a (Fo/chl. a) increased significantly in all Irgarol treatment groups, but TBT had no effect on either parameter. The present results suggest that TBT has no direct effect on electron flow in the photosystem and that the chl. a/c ratio and Fo/chl. a are sensitive bio-markers for detecting the effect of the PSII inhibitor in diatoms.","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84308613","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Distribution of Parent and Alkylated PAHs in Bivalves Collected from Osaka Bay, Japan 日本大阪湾双壳类中母体和烷基化多环芳烃的分布

Japanese journal of environmental toxicology Pub Date : 2015-06-01 DOI: 10.11403/JSET.18.11

K. Ito, S. Uno, Hiroyuki Tanaka, S. Miki, E. Kokushi, M. Yamamoto, J. Koyama, Nathaniel C. A ñasco

{"title":"Distribution of Parent and Alkylated PAHs in Bivalves Collected from Osaka Bay, Japan","authors":"K. Ito, S. Uno, Hiroyuki Tanaka, S. Miki, E. Kokushi, M. Yamamoto, J. Koyama, Nathaniel C. A ñasco","doi":"10.11403/JSET.18.11","DOIUrl":"https://doi.org/10.11403/JSET.18.11","url":null,"abstract":"− 11 − ABSTRACT To compare the distributions of polycyclic aromatic hydrocarbons (PAHs) and alkylated PAHs (alkPAHs) in sessile marine organisms, bivalves were collected from 20 sites along the coastal areas of Osaka Bay in Japan. Both PAHs and alkPAHs in bivalve tissues were determined by GC/MS. Total PAHs (∑PAHs) were 87.3-361, 212214 and 70.9-351 ng/g dry weight (dw) in blue mussels, green mussels and oysters, respectively. Meanwhile, total alkPAHs (∑alkPAHs) were 466-3293, 950-1788 and 2862787 ng/g dw in blue mussels, green mussels and oysters, respectively. When compared to their reported concentrations in sediments, ∑PAH were much lower while ∑alkPAH were higher in bivalves. Moreover, ∑alkPAHs in bivalves of each samling site were 1.89.8 times higher than ∑PAHs although ∑alkPAHs in sediment of each sampling site were 1.2-4.5 times lower than ∑PAHs. On the other hand, of the PAHs, naphthalene showed the highest concentration in bivalves for most of the sampling sites. Fortunately, benzo(a)pyrene and PAH4 concentrations in bivalves from Osaka Bay were within the EU criteria. For individual alkPAHs in bivalves, the naphthalene, dibenzothiophene, and phenanthrene/anthracene groups were accumulated at relatively high concentrations. These results suggest that the low molecular weight alkPAHs have higher tendency to pollute water columns.","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85365195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Chronic Toxicity Tests with Daphnia magna for the Examination of River Water Quality 大水蚤对河流水质的慢性毒性试验

Japanese journal of environmental toxicology Pub Date : 2014-08-01 DOI: 10.11403/JSET.17.19

M. Tada, Yutaka Ogamino

{"title":"Chronic Toxicity Tests with Daphnia magna for the Examination of River Water Quality","authors":"M. Tada, Yutaka Ogamino","doi":"10.11403/JSET.17.19","DOIUrl":"https://doi.org/10.11403/JSET.17.19","url":null,"abstract":"− 19 − ABSTRACT The toxicological effects of river water on the reproduction of the water f lea Daphnia magna were assessed with the standard 21-d chronic test(OECD TG211)at four river sites(St. 1–4)in rural districts of the Kanto Plain(Ibaraki Prefecture, Japan) at monthly intervals from April 2007 to March 2010. Over the 3 years, we recorded the following average numbers of live D. magna offspring after the 21-d tests: 17–233, 14–223, 29–210, and 84–209 in St. 1, 2, 3, and 4, respectively. The average numbers in August 2007, May and September 2008, and April 2009 at St. 1; August 2007 and May 2008 at St. 2, and June 2007 and April 2009 at St. 3 were significantly lower than those of the control(ANOVA, P < 0.01). The results of the above tests suggest that D. magna may be affected not only by the overall pesticide toxicity in the river water, but also by other factors that were not clarified in the present study. In addition, significant positive correlations were observed at each site between the body length of D. magna and the total number of offspring at 7 d(r = 0.783), 14 d(r = 0.772), and 21 d(r = 0.931)after the test began on 10 May 2008. These findings suggest that the body length of D. magna might be used to evaluate the toxicological effects of river water, even at 7 d, by using the standard chronic toxicity test.","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2014-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89948642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Elevated temperatures and low nutrients decrease the toxicity of diuron for growth of the green alga Pseudokirchneriella subcapitata 升高的温度和低的营养物质降低了迪乌隆对绿藻类生长的毒性

Japanese journal of environmental toxicology Pub Date : 2014-08-01 DOI: 10.11403/JSET.17.1

Rumana Tasmin, Y. Shimasaki, Xuchun Qiu, Masato Honda, M. Tsuyama, N. Yamada, S. Fukuda, Y. Oshima

引用次数: 3

Toxic effects of several heavy metal ions and their pyrithione complexes on Daphnia magna embryos 几种重金属离子及其吡硫酮配合物对大水蚤胚胎的毒性作用

Japanese journal of environmental toxicology Pub Date : 2014-01-01 DOI: 10.11403/JSET.17.33

M. Kikuchi, Hiroki Onodera, A. Sato, Ken Goto, Kazue Kato, J. Sawai

引用次数: 0

Identification of Perfluorooctane Sulfonate Binding Protein in Plasma of Rat 大鼠血浆中全氟辛烷磺酸结合蛋白的鉴定

Japanese journal of environmental toxicology Pub Date : 2014-01-01 DOI: 10.11403/JSET.17.11

Akinari Shimazaki, Masato Honda, T. Akasaka, Akemi Muta, Yoko Kato-Unoki, N. Okino, Y. Shimasaki, Y. Oshima

引用次数: 1

Effect of butylparaben on the reproduction of medaka （Oryzias latipes）对羟基苯甲酸丁酯对米藻繁殖的影响

Japanese journal of environmental toxicology Pub Date : 2013-01-01 DOI: 10.11403/JSET.16

H. Yokota, A. Yamashita, Mai Uenokatsu, K. Tsujimura, E. Nakano, Sayaka Eguchi

引用次数: 0

Bioconcentration of Waterborne Nitroarenes in Marbled Flounder Pleuronectes yokohamae 横滨纹牙鲆水体硝基芳烃的生物富集

Japanese journal of environmental toxicology Pub Date : 2013-01-01 DOI: 10.11403/JSET.16.91

E. Bacolod, S. Uno, Hiroyuki Tanaka, S. Miki, E. Kokushi, M. Fukunaga, J. Koyama

{"title":"Bioconcentration of Waterborne Nitroarenes in Marbled Flounder Pleuronectes yokohamae","authors":"E. Bacolod, S. Uno, Hiroyuki Tanaka, S. Miki, E. Kokushi, M. Fukunaga, J. Koyama","doi":"10.11403/JSET.16.91","DOIUrl":"https://doi.org/10.11403/JSET.16.91","url":null,"abstract":"91 ABSTRACT Studies on the accumulation of waterborne nitrated polycyclic aromatic hydrocarbons (NPAHs), commonly known as nitroarenes, by fish are not well known. In this study, bioconcentration of NPAHs by marbled flounder, Pleuronectes yokohamae exposed to a mixture of six NPAHs was investigated in a continuous flow-through system for a period of seven days exposure followed immediately with seven days elimination. P. yokohamae is one of commercially important fish in Japan and is known to accumulate pollutants. Results show that NPAHs steady-state conditions were established from day 1 to 4 of exposure. Estimated bioconcentration factors(BCFs)ranged from 4 to 422 with 6-nitrochrysene and 2-nitrofluorene having the lowest and highest BCFs, respectively. Half-lives were from 0.96 to 5.59 days with 2-nitroflourene and 6-nitrochrysene being the shortest and the longest, respectively. The present study showed that waterborne NPAHs were accumulated by marbled flounder but the BCFs were lower than reported values of their parent PAHs. Furthermore, the difference in BCFs between NPAHs and PAHs could be attributed to the biotransformation processes and steric hindrance of these compounds.","PeriodicalId":14585,"journal":{"name":"Japanese journal of environmental toxicology","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2013-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85913007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Micronuclei and other nuclear abnormalities induction in erythrocytes of marbled flounder, Pleuronectes yokohamae, exposed to dietary nitrated polycyclic aromatic hydrocarbons 饮食中硝化多环芳烃对横滨大理石比目鱼红细胞微核和其他核异常的诱导作用

Japanese journal of environmental toxicology Pub Date : 2013-01-01 DOI: 10.11403/JSET.16.79

E. Bacolod, S. Uno, Hiroyuki Tanaka, J. Koyama

引用次数: 4