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Volume 62 Number 3 >

Contamination status and possibility of toxic effects of co-planar polychlorinated biphenyls, polycyclic aromatic hydrocarbons, and dichlorodiphenyltrichloroethane in large Japanese field mouse (Apodemus speciosus) collected from Hokkaido and Aomori

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Please use this identifier to cite or link to this item:http://doi.org/10.14943/jjvr.62.3.107

Title: Contamination status and possibility of toxic effects of co-planar polychlorinated biphenyls, polycyclic aromatic hydrocarbons, and dichlorodiphenyltrichloroethane in large Japanese field mouse (Apodemus speciosus) collected from Hokkaido and Aomori
Authors: Mizukawa, Hazuki Browse this author
Ikenaka, Yoshinori Browse this author →KAKEN DB
Nakayama, Shouta M. M. Browse this author
Sakamoto, Kentaro Q. Browse this author →KAKEN DB
Fujita, Shoichi Browse this author →KAKEN DB
Ishizuka, Mayumi Browse this author →KAKEN DB
Keywords: Coplanar PCBs (Co-PCBs)
Large Japanese field mouse
PAHs
Testis
Testosterone
Issue Date: Aug-2014
Publisher: Graduate School of Veterinary Medicine, Hokkaido University
Journal Title: Japanese Journal of Veterinary Research
Volume: 62
Issue: 3
Start Page: 107
End Page: 115
Abstract: Contamination levels of coplanar polychlorinated biphenyls (Co-PCBs), polycyclic aromatic hydrocarbons (PAHs), and dichlorodiphenyltrichloroethane (DDTs) were measured in the entire body of the large Japanese field mouse (Apodemus speciosus) collected from Hokkaido (Ishikari and Rankoshi) and Aomori prefecture (Takko) in Japan. Higher concentrations of PCBs including Co-PCBs, were observed in the mice collected from Ishikari than those from Rankoshi. The concentration of PAHs in the soil from Ishikari was also higher than that in the other sampling sites. The findings suggest that Ishikari is the most polluted area, probably because of human activities, depending on the population distribution. However, the observed contaminant levels were extremely lower compared to those in previous studies. The ratio of testis weight to body weight (TW/BW) was the lowest in the mice collected from Ishikari, which is the area contaminated with PAHs and p,p’- dichlorodiphenyldichloroethylene (DDE). However, the serum testosterone levels of mice from the Ishikari area were higher than those from the non-contaminated other areas although no significant differences. Previous studies have shown that a low-level exposure to dioxin related compounds (DRCs) disturbances in sexual function, resulting in the production of testosterone. This study showed that POPs exposure is one of the possibility of the high testosterone concentration in the mice of the Ishikari area in addition to a cause of biological and environmental factors such as habitat density, age, temperatures and/or food riches.
Type: bulletin (article)
URI: http://hdl.handle.net/2115/56894
Appears in Collections:Japanese Journal of Veterinary Research > Volume 62 Number 3

Submitter: 獣医学部図書室

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