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Basic Methods for the Study of Reproductive Ecology of Fish in Aquaria
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Ecological data for western Indian Ocean tuna.

Nathalie Bodin1,2, Emmanuel Chassot1,2, Fany Sardenne1

  • 1Research Institute for Sustainable Development (IRD) - Marine Biodiversity Exploitation & Conservation Unit, Fishing Port, Victoria, Mahe, Republic of Seychelles.

Ecology
|March 24, 2018
PubMed
Summary

The IndianEcoTuna dataset offers ecological tracers for four tuna species in the Indian Ocean, aiding research on marine food webs and climate change impacts. This valuable data supports trophic ecology and ecosystem analysis.

Keywords:
energeticsfatty acidslipidsmorphometricsmulti-tissuesproteinsstable isotopestrophic ecologytropical marine ecosystemstuna fisheries

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Area of Science:

  • Marine Ecology
  • Fisheries Science
  • Oceanography

Background:

  • Tuna are apex predators in the Indian Ocean, vital to fisheries and serving as bioindicators of environmental change.
  • Modifications in tuna food webs reflect ecosystem-level impacts of climate change and human activities.

Purpose of the Study:

  • To present the IndianEcoTuna dataset, a comprehensive collection of ecological tracers for key tuna species in the western Indian Ocean.
  • To provide a robust dataset for analyzing trophic ecology, food web dynamics, and the effects of environmental changes on marine ecosystems.

Main Methods:

  • Collected ecological tracers (stable isotopes, proteins, lipids, fatty acids) from 1,364 tuna individuals across four species (ALB, BET, SKJ, YFT).
  • Samples were obtained from 2009-2015 in the western Indian Ocean, covering a wide range of fish sizes.
  • Data includes tissue-specific analyses (muscle, liver, gonads) and associated metadata (gear type, location, date).

Main Results:

  • The dataset comprises over 9,500 stable isotope records, 887 protein concentrations, 8,356 lipid measurements, and over 1,100 fatty acid profiles.
  • Includes data on sex, weight, and size (fork length) for all sampled individuals.
  • Provides key quantitative parameters such as niche width, trophic position, and condition indices.

Conclusions:

  • The IndianEcoTuna dataset is a valuable resource for global and regional research on marine trophic ecology and food web analysis.
  • It facilitates the study of anthropogenic and climate-induced changes in Indian Ocean marine ecosystems.
  • The dataset is freely available for research and teaching purposes, requiring citation of the data paper.