Life history and migration of Sakhalin taimen, Hucho perryi, caught from Lake Akkeshi in eastern Hokkaido, Japan, as revealed by Sr:Ca ratios of otoliths |
| |
| Authors: | Kentaro Honda Takaomi Arai Nobuyuki Takahashi Kazushi Miyashita |
| |
| Affiliation: | (1) Akkeshi Marine Station, Field Science Center for Northern Biosphere, Hokkaido University, Aikappu, Akkeshi Hokkaido, 088-1113, Japan;(2) International Coastal Research Center, Ocean Research Institute, The University of Tokyo, 2-106-1 Akahama, Otsuchi, Kamihei Iwate, 028-1102, Japan;(3) Laboratory of Marine Ecosystem Change Analysis, Graduate School of Environmental Science, Hokkaido University, 3-1-1 Minato, Hakodate Hokkaido, 041-8611, Japan;(4) Laboratory of Marine Ecosystem Change Analysis, Field Science Center for Northern Biosphere, Hokkaido University, 3-1-1 Minato, Hakodate Hokkaido, 041-8611, Japan |
| |
| Abstract: | Microchemical analysis of the strontium (Sr) and calcium (Ca) ratios of otoliths was conducted to determine the life history and migration of anadromous Sakhalin taimen, Hucho perryi. In 2008 and 2009, 10 specimens were sampled from Lake Akkeshi in eastern Hokkaido, Japan. Our results indicated that some specimens migrated to brackish waters during their early life histories. Because the Sr:Ca ratios of the specimens in this study were all less than those of specimens from Sakhalin Island during a previous study, specimens from Lake Akkeshi may have migrated to brackish water, or may have remained in the ocean for only a short period. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
