Gonadal histology and serum vitellogenin levels of bigeye tuna Thunnus obesus from the Northern Pacific Ocean--absence of endocrine disruption bio-indicators.
Gonadal histology and serum vitellogenin levels of bigeye tuna Thunnus obesus from the Northern Pacific Ocean--absence of endocrine disruption bio-indicators.
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DOI：
10.1016/s0025-326x(02)00460-5
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发表时间：
2003-04
影响因子：
5.8
通讯作者：
S. Hashimoto;R. Kurihara;C. A. Strüssmann;T. Yamasaki;K. Soyano;A. Hara;H. Shiraishi;M. Morita
中科院分区：
文献类型：
--
作者：
S. Hashimoto;R. Kurihara;C. A. Strüssmann;T. Yamasaki;K. Soyano;A. Hara;H. Shiraishi;M. Morita
在大量海洋鱼类中检测到有机氯等干扰内分泌的化学品。通过对1999年和2000年采集于北方太平洋的大眼金枪鱼（Thunnus obesus）性腺组织学观察、血清卵黄蛋白原（VTG）含量测定和肝脏多氯联苯（PCB）含量测定，研究了大眼金枪鱼生殖健康状况和内分泌干扰物污染状况。在受内分泌干扰物影响的物种中常见的异常，例如睾丸中存在卵母细胞或血清VTG水平升高，在检查的任何雄性动物中均未发现。雄性和雌性的肝脏中只有少量的PCB含量。研究结果表明，目前在北方太平洋的大眼金枪鱼中，有机氯污染或性腺功能内分泌干扰的风险很小。然而，还需要进一步的研究来评估公海渔业资源的健康状况。
Endocrine disrupting chemicals such as organochlorines have been detected in a large number of marine fish. Histological observation of the gonads, measurement of serum vitellogenin (VTG) level and of liver polychlorinated biphenyl (PCB) content were performed to evaluate the reproductive health and the contamination with endocrine disruptors in bigeye tuna Thunnus obesus, collected in the northern Pacific Ocean in 1999 and 2000. Abnormalities commonly found in species affected by endocrine disruptors such as the presence of oocytes in the testis or elevated serum VTG levels were not found in any of males examined. Both males and females had only small amounts of liver PCB content. The results suggest that currently there is little if any risk of organochlorine contamination or endocrine disruption of gonadal function in bigeye tuna from the northern Pacific Ocean. However, further studies are necessary to evaluate the health status of the open sea fishery resources.