Development of the method for dynamic detection and analysis of environmental pollutants based on the study of feeding ecology of coastal fishes with high degree of environmental sensitivity

基于环境敏感性高的沿海鱼类摄食生态研究开发环境污染物动态检测分析方法

• 批准号: 14580557
• 负责人: YAMAMURO Masumi
• 金额: $ 1.86万
• 依托单位: National Institute of Advanced Industrial Science and Technology (AIST)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14580557/
• 关键词: Konoisirus punkutatus; dioxin; Lake Shinji; stable isotope ratios; gonad

To examine if the mass mortality of Konoisirus punkutatus at Lake Shinji in summer is caused by contamination of dioxin, we collected Konoisirus punkutatu using set nets. Dead floating fishes due to mass mortality were also collected near the east set nets in June. All the June samples were floating dead fishes. Five fishes were collected at the west set nets in December. As K. punctatus grows, it would accumulate more dioxins. However, neither body length nor total weight showed significant correlation. Some April samples and floating fishes in June showed more TEQ than the same size fishes collected in December. This may support the above hypothesis. Fishes more contaminated by dioxins may become weak to environmental stress and die off in summer. GSI expresses the degree of exhaustion due to spawning. It is calculated as follows.GSI=Gonad weight (g)/Total weight (g)x10^2The GSI of floating dead fishes in June were not considerably smaller than the samples in April. We additionally sampled 37 dead fishes and 35 live fishes of three years old, and compared the body length, body weight, gonad weight, GSI, and F (F=body weight/(body length)^3x10^6). Unpaired t-test suggested that they are not different between dead and live fishes. This may suggest that fishes more contaminated dioxins are easily dead after the spawning.

检查如果质量死亡率Konoisirus punkutatus湖真嗣在夏天是二恶英的污染造成的,我们收集Konoisirus punkutatu使用蚊帐。此外，渔护署亦于六月在东面渔网附近收集到大量死亡的浮鱼尸体。六月的样本都是漂浮的死鱼。12月，渔护署在西渔网共捕到5条鱼。随着斑马鱼的生长，它会积累更多的二恶英。但体长与总体重均无显著相关。一些4月份的样本和6月份的浮鱼比12月份收集的相同大小的鱼显示出更多的TEQ。这可能支持上述假设。受二恶英污染较多的鱼类可能会对环境压力变得虚弱，并在夏季死亡。GSI表示由于产卵而导致的耗尽程度。计算方法如下。GSI=生殖腺重量(g)/总重量(g) × 10^2 6月份浮死鱼的GSI与4月份的浮死鱼并无明显差异。另外，我们采集了37条死鱼和35条3岁的活鱼，比较了体长、体重、性腺重量、GSI和F （F=体重/（体长）^3x10^6）。非配对t检验表明，死鱼和活鱼之间没有差异。这可能表明受二恶英污染较多的鱼类在产卵后更容易死亡。

项目成果

石飛裕, 平塚純一, 桑原弘道, 山室真澄: "異なる塩分濃度を有する富栄養化した隣接汽水湖における魚類相の比較"海洋と生物. 25・5. 398-404 (2003)

Yutaka Ishitobi、Junichi Hiratsuka、Hiromichi Kuwabara、Masumi Yamamuro：“不同盐度浓度的相邻富营养性咸水湖泊中鱼类区系的比较”海洋与生物学 25・5（2003）。

Naito, W., Nakanishi, J., Yamamuro, M., Masunaga, S., Jin, J., Kang, Y.: "Dynamics of PCDDs/DFs and coplanar-PCBs in an aquatic food chain of Tokyo Bay"Chemoshpere. 53・4. 347-362 (2003)

Naito, W.、Nakanishi, J.、Yamamuro, M.、Masunaga, S.、Jin, J.、Kang, Y.：“东京湾水生食物链中 PCDD/DF 和共面 PCB 的动态”Chemoshpere 53·4。347-362（2003）

Naito, W., Nakanishi, J., Yamamuro, M., Masunaga, S., Jin, J., Kang, Y.: "Dynamics of PCDDs/DFs and coplanar-PCBs in an aquatic food chain of Tokyo Bay."Chemosphere. 53-4. 347-362 (2003)

Naito, W.、Nakanishi, J.、Yamamuro, M.、Masunaga, S.、Jin, J.、Kang, Y.：“东京湾水生食物链中 PCDD/DF 和共面 PCB 的动态。”

Ishitobi, Y., Hiratsuka, J., Kuwabara, H., Yamamuro, M.: "Comparison of fish fauna in three areas of adjacent eutrophic estuarine lagoons with different salinities."Aquabiology. 25-5. 398-404 (2003)

Ishitobi, Y., Hiratsuka, J., Kuwabara, H., Yamamuro, M.：“不同盐度的相邻富营养化河口泻湖三个区域的鱼类区系比较。”水生生物学。

金井豊, 山室真澄, 井内美郎, 徳岡隆夫: "島根・鳥取県中海における堆積速度と堆積環境"地球化学. 36. 161-178 (2002)

Yutaka Kanai、Masumi Yamamuro、Yoshiro Inouchi、Takao Tokuoka：“中海、岛根和鸟取县的沉积速率和沉积环境”地球化学 36. 161-178 (2002)。