Depletion of naturally recruited wild Japanese eels in Okayama, Japan, revealed by otolith stable isotope ratios and abundance indices
Depletion of naturally recruited wild Japanese eels in Okayama, Japan, revealed by otolith stable isotope ratios and abundance indices
复制标题
通过耳石稳定同位素比率和丰度指数揭示日本冈山自然招募的野生日本鳗鱼的枯竭
DOI:
10.1007/s12562-018-1225-2
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发表时间:
2018
影响因子:
1.9
通讯作者:
Shirai Kotaro
中科院分区:
文献类型:
--
作者:
Kaifu Kenzo;Yokouchi Kazuki;Higuchi Tomihiko;Itakura Hikaru;Shirai Kotaro
To investigate the population dynamics of naturally recruited wild Japanese eels, fisheries data of wild individuals in Okayama Prefecture were investigated as a case study. Wild and stocked eels were discriminated using a recently developed method based on otolith stable isotopes. Of the 161 eels captured in freshwater areas where eels had been stocked, 98.1% were discriminated as stocked. In contrast, 82.8% of 128 eels captured in coastal areas where eels are not stocked were discriminated as wild. There was a significant decrease in longline and set-net catch per unit effort between 2003 and 2016 in the coastal areas where most eels were discriminated as wild, indicating ongoing depletion of wild Japanese eels in these waters.
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影响因子:
1.9
作者:
Ryoshiro Wakiya;K. Kaifu;N. Mochioka
通讯作者:
N. Mochioka
影响因子:
2.8
作者:
K. Yokouchi;N. Fukuda;Michael J. Miller;J. Aoyama;F. Daverat;K. Tsukamoto
通讯作者:
K. Tsukamoto
影响因子:
2
作者:
E. Prigge;L. Marohn;R. Hanel
通讯作者:
R. Hanel
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
Watanabe;et al.;Tsukamoto K.
通讯作者:
Tsukamoto K.
影响因子:
2.5
作者:
L. Westin
通讯作者:
L. Westin