Inter- and intra-specific variation in the degree of marine-derived resources of amphidromous fishes

# Raw data: Data for the manuscript entitled “Inter- and intra-specific variation in the degree of marine-derived resources of amphidromous fishes”

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## Description of the data

# data_SL_composition: Information for all individuals of subsamples measured standard length and wet weight

no: Row number

Sample_No: ID for each specimen

Date: Year/Month/Date surveyed

Site: Study sites

Species: Genus and Species name for each specimen

SL: Standard length (mm) of fish. NA = no data available

BW: Wet weight (g) of fish.

Migration_Group: Migration group. 0: Settled individuals; 1: Individuals in first migration group; 2: Individuals in second migration group

Season: Season each specimen captured. Spr: February, March, April and May in 2023; Sum: June, July and August in 2023; Fall: September, October and November in 2023; Win: December in 2023, January and February in 2024

# S_isotope: Information for all specimens of sulfur isotope analysis

no: Row number

ID: ID for each specimen

Date: Year/Month/Date surveyed

Site: Study sites

Species: Genus and Species name for each specimen or water

Type: Type of each specimen. Adu: Settled individuals of amphidromous fish;  Base_FW: Baseline of Freshwater site; Base_Sea: Baseline of ocean site; Mig: migrants of amphidromous fish

SL: Standard length (mm) of fish. NA = no data available

BW: Wet weight (g) of fish.  NA = no data available

Rec_Tim: Recruitment timing for each individual. N: Not migrants; E: Early recruitment period; M: Middle recruitment period; L: Late recruitment period

Origin: Origin for each specimen. F: Freshwater; M: Migrants; S: Ocean 

x_category: Fish categories for inter-specific comparison (Figure 4a)

Calib_d34S: The calibrated value of δ34S for each specimen

Group_mig: The migration group for each individual. 0: no migrants; 1: 1st migrants; 2: 2nd migrants

# data_source: The source data for mixing models

Source: Source of migrants. Girella_punctata: marine-derived source; F_Fish: freshwater-derived source

MeanCalib_d34S: Mean of d34S of source individuals

SDCalib_d34S: standard deviation of d34S of source individuals

n: Number of samples

# data_discrimination: The discrimination data for mixing models

Source: Source of migrants. Girella_punctata: marine-derived source; F_Fish: freshwater-derived source

MeanCalib_d34S: Mean discrimination value of d34S.

SDCalib_d34S: standard deviation of discrimination value of d34S.

\## Sharing/Access information

No other data sharing sources are available.

Please contact the corresponding author (Ryosuke Tanaka: rtanaka@ecology.kyoto-u.ac.jp) if you are interested in using the data.

\## Code/Software

Data analysis was conducted using R version 4.3.2 and the following R packages: car (v3.1.2), ggpattern (v1.0.1), ggpubr(v0.6.0), HDInterval(v.0.2.4), MixSIAR(v3.1.12), NSM3 (v1.18), rjags(v4.16), and tidyverse (v2.0.0).
Analysis scripts deposited in Zenodo: doi: 10.5281/zenodo.15363380