Data from: Larval body buoyancy in diadromous gobies and its potential role in the colonization of freshwater environments
Data files
Jun 18, 2026 version files 122.74 KB
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Data_on_body_SG.xlsx
18.56 KB
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Data_on_swimbladder_analysis.xlsx
21.72 KB
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Data_on_swimming_layer.xlsx
80.73 KB
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README.md
1.73 KB
Abstract
This dataset contains measurements of body specific gravity (SG), swimbladder size, and vertical swimming layer position of newly hatched larvae from three migratory (amphidromous) Gymnogobius species, one of which includes both amphidromous and freshwater-resident populations. Larvae were reared under controlled freshwater and seawater conditions, and body SG was measured using density-adjusted solutions (1.0010–1.0490 in SG). Swimbladder size was quantified using image analysis, and vertical swimming behavior was recorded in tank experiments. The dataset includes individual-level data with species identity, rearing salinity, SG values, swimbladder measurements, and observed swimming depths. There are no legal or ethical restrictions associated with this dataset; all experimental protocols complied with relevant institutional and national guidelines for the care and use of animals in research.
Dataset DOI: 10.5061/dryad.g4f4qrg2h
Description of the data and file structure
This dataset was collected as part of an experiment to examine the ability of newly hatched larvae of three Gymnogobius species to regulate body buoyancy in freshwater and seawater conditions. Larvae were reared under controlled salinity conditions, and data were collected on body specific gravity, swimbladder size, and vertical swimming behavior at a laboratory condition.
Files and variables
File: Data_on_body_SG.xlsx
Description: Data on larval body specific gravity under freshwater and seawater conditions.
Variables
- Rearing salinity
- Body SG
- Clutch ID
File: Data_on_swimbladder_analysis.xlsx
Description: Data on larval swimbladder size in relation to body specific gravity.
Variables
- Rearing salinity
- Swimbladder size (cross-sectional area, mm2)
- Notochord length (mm)
- Parent ID
File: Data_on_swimming_layer.xlsx
Description: Data on larval swimming position in the water column under freshwater and seawater conditions.
Variables
- Clutch ID
- Total number of larvae in each tank
- Elapsed time (seconds)
- Number of floating larvae in each tank
- Number of larvae at the upper layer of each tank
Code/software
The data files are provided in Microsoft Excel (.xlsx) format.
No specialized software is required to view the raw data.
Access information
Data was derived from the following sources:
- All data were collected and generated by the authors; no external datasets were used.