Combining microvolume isotope analysis and numerical simulation to reproduce fish migration history

Tatsuya Sakamoto; Kosei Komatsu; Kotaro Shirai; Tomihiko Higuchi; Toyoho Ishimura; Takashi Setou; Yasuhiro Kamimura; Chikako Watanabe; Atsushi Kawabata

doi:10.1111/2041-210X.13098

Combining microvolume isotope analysis and numerical simulation to reproduce fish migration history

Tatsuya Sakamoto, Kosei Komatsu, Kotaro Shirai, Tomihiko Higuchi, Toyoho Ishimura, Takashi Setou, Yasuhiro Kamimura, Chikako Watanabe, Atsushi Kawabata

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

Tracking the movement of migratory fish is of great importance for efficient conservation, although this has been technically difficult to achieve in small fish to which artificial tags cannot be attached. We show that migration history can be reproduced by combining high-resolution otolith stable oxygen isotope ratio (δ¹⁸O) analysis and numerical simulation. High-precision micromilling and microvolume carbonate analysing systems had the remarkable capability of extracting the otolith δ¹⁸O profiles with 10–30 days resolution. Furthermore, reasonable movements were reproduced by searching the routes consistent with the otolith δ¹⁸O profile, using an individual-based model with random swimming behaviour. This method will be a valuable alternative to tagging and electronic loggers for revealing migration routes in early life stages, thereby providing crucial information to understand population structures and the environmental cause of recruitment variabilities, and to validate and improve fish movement models.

Original language	English
Pages (from-to)	59-69
Number of pages	11
Journal	Methods in Ecology and Evolution
Volume	10
Issue number	1
DOIs	https://doi.org/10.1111/2041-210X.13098
Publication status	Published - Jan 2019
Externally published	Yes

Keywords

IBM
behaviour
isotope
migration
otolith
population structure
sardine
small pelagic fish

ASJC Scopus subject areas

Ecology, Evolution, Behavior and Systematics
Ecological Modelling

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Combining microvolume isotope analysis and numerical simulation to reproduce fish migration history. / Sakamoto, Tatsuya; Komatsu, Kosei; Shirai, Kotaro; Higuchi, Tomihiko; Ishimura, Toyoho; Setou, Takashi; Kamimura, Yasuhiro; Watanabe, Chikako; Kawabata, Atsushi.

In: Methods in Ecology and Evolution, Vol. 10, No. 1, 01.2019, p. 59-69.

Research output: Contribution to journal › Article › peer-review

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title = "Combining microvolume isotope analysis and numerical simulation to reproduce fish migration history",

abstract = "Tracking the movement of migratory fish is of great importance for efficient conservation, although this has been technically difficult to achieve in small fish to which artificial tags cannot be attached. We show that migration history can be reproduced by combining high-resolution otolith stable oxygen isotope ratio (δ18O) analysis and numerical simulation. High-precision micromilling and microvolume carbonate analysing systems had the remarkable capability of extracting the otolith δ18O profiles with 10–30 days resolution. Furthermore, reasonable movements were reproduced by searching the routes consistent with the otolith δ18O profile, using an individual-based model with random swimming behaviour. This method will be a valuable alternative to tagging and electronic loggers for revealing migration routes in early life stages, thereby providing crucial information to understand population structures and the environmental cause of recruitment variabilities, and to validate and improve fish movement models.",

keywords = "IBM, behaviour, isotope, migration, otolith, population structure, sardine, small pelagic fish",

author = "Tatsuya Sakamoto and Kosei Komatsu and Kotaro Shirai and Tomihiko Higuchi and Toyoho Ishimura and Takashi Setou and Yasuhiro Kamimura and Chikako Watanabe and Atsushi Kawabata",

note = "Funding Information: JSPS, Grant/Award Number: 17J00556; JSPS KAKENHI, Grant/Award Number: JP15H04541, 16H02944 and 18H04921; Fisheries Agency and Fisheries Research and Education Agency of Japan Funding Information: The authors gratefully acknowledge the support from Grant-in-Aid for JSPS Fellows 17J00556, JSPS KAKENHI grants number JP15H04541, 16H02944, and 18H04921, and from grants for marine fisheries stock assessment and evaluation for Japanese waters from the Fisheries Agency and Fisheries Research and Education Agency of Japan. We thank S. Itoh for technical advices on numerical simulation and insightful comments to improve the manuscript. We thank Mr. Zhang who provided the seawater δ18O data in 2012 and 2013. There are no conflicts of interest to declare. Publisher Copyright: {\textcopyright} 2018 The Authors. Methods in Ecology and Evolution published by John Wiley & Sons Ltd on behalf of British Ecological Society.",

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AU - Setou, Takashi

AU - Kamimura, Yasuhiro

AU - Watanabe, Chikako

AU - Kawabata, Atsushi

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AB - Tracking the movement of migratory fish is of great importance for efficient conservation, although this has been technically difficult to achieve in small fish to which artificial tags cannot be attached. We show that migration history can be reproduced by combining high-resolution otolith stable oxygen isotope ratio (δ18O) analysis and numerical simulation. High-precision micromilling and microvolume carbonate analysing systems had the remarkable capability of extracting the otolith δ18O profiles with 10–30 days resolution. Furthermore, reasonable movements were reproduced by searching the routes consistent with the otolith δ18O profile, using an individual-based model with random swimming behaviour. This method will be a valuable alternative to tagging and electronic loggers for revealing migration routes in early life stages, thereby providing crucial information to understand population structures and the environmental cause of recruitment variabilities, and to validate and improve fish movement models.

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Combining microvolume isotope analysis and numerical simulation to reproduce fish migration history

Abstract

Keywords

ASJC Scopus subject areas

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