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Differences in the maturation level among life histories of the Japanese eel Anguilla japonica in the Nagata River, Japan

Naoko Chino

Naoko Chino

Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku LinkGadong, Brunei Darussalam
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Chino, Naoko
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Chifumi Imai

Chifumi Imai

Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku LinkGadong, Brunei Darussalam
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Imai, Chifumi
, 
Harumi Sakai

Harumi Sakai

Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku LinkGadong, Brunei Darussalam
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Sakai, Harumi
 und 
Takaomi Arai

Takaomi Arai

Environmental and Life Sciences Programme, Faculty of Science, Universiti Brunei Darussalam, Jalan Tungku LinkGadong, Brunei Darussalam
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Arai, Takaomi
  
12. Dez. 2017
Differences in the maturation level among life histories of the Japanese eel Anguilla japonica in the Nagata River, Japan's Cover Image
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Artikel-Kategorie: Short communication
Online veröffentlicht: 12. Dez. 2017
Seitenbereich: 472 - 477
Eingereicht: 19. Feb. 2017
Akzeptiert: 15. Mai 2017
DOI: https://doi.org/10.1515/ohs-2017-0046
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© 2017 Faculty of Oceanography and Geography, University of Gdańsk, Poland. All rights reserved
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Figure 1

Map showing the location of the Nagata River, Shimonoseki, Yamaguchi Prefecture
Map showing the location of the Nagata River, Shimonoseki, Yamaguchi Prefecture

Figure 2

Frequency distribution of the mean values of the Sr:Ca ratio outside the elver mark (150 μm in radius) in each otolith of specimens of the Japanese eel. Black and white columns suggest silver eels and yellow eels, respectively
Frequency distribution of the mean values of the Sr:Ca ratio outside the elver mark (150 μm in radius) in each otolith of specimens of the Japanese eel. Black and white columns suggest silver eels and yellow eels, respectively

Figure 3

The relationship between the gonadosomatic index (GSI) and the mean values of the Sr:Ca ratio outside the elver mark (150 μm in radius) in each otolith of specimens of the Japanese eel
The relationship between the gonadosomatic index (GSI) and the mean values of the Sr:Ca ratio outside the elver mark (150 μm in radius) in each otolith of specimens of the Japanese eel

Figure 4

The relationship between the gonadosomatic index (GSI) and the age of the Japanese eel
The relationship between the gonadosomatic index (GSI) and the age of the Japanese eel
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