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Gut Content Analyis of Zooplankton in the Indian Ocean, 2014-2015

Created 24/06/2025

Updated 24/06/2025

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We studied the gut contents of four dominant copepod species (Calanoides acutus, Calanus propinquus, Calanus simillimus and Rhincalanus gigas) during the summer (2014-2015) along a latitudinal gradient (sampled every 5° between 40°S and 65°S) in the Indian sector of the SO. Diatoms were the most abundant food item found in the guts, comprising 24 of the 25 species found, and 15 were common to the four species of copepod studied. Diatoms accounted for the lowest proportion of the diet in the warmer, northern waters while all the large diatoms (e.g. Chaetoceros atlanticus, C. criophilus, C. dichaeta, Corethron spp.) were only found at 65oS. The most frequent species in the guts were the centric diatoms Thalassiosira spp. (4 to 57%) and the pennate diatoms Fragilariopsis kerguelensis (27 to 80%) and Trichoctoxon reinboldii (2 to 50%); proportions varied within a species across locations. These species were found at all sites examined, whereas some diatoms were specific to one copepod species: Asteromphalus spp. (in R. gigas), C. criophilus and C. dichaeta (in C. acutus), Nitzschia lecointei and N. sicula (in C. propinquus).

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Additional Info

Field Value
Title Gut Content Analyis of Zooplankton in the Indian Ocean, 2014-2015
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/f53b34ed-2a07-4bfa-a11e-f2e556d3e9cf
Contact Point
Australian Ocean Data Network
metadata@aad.gov.au
Reference Period 10/01/2015 - 25/01/2015
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        110.39063,
        -64.32087
      ],
      [
        113.20313,
        -64.32087
      ],
      [
        113.20313,
        -45.08904
      ],
      [
        110.39063,
        -45.08904
      ],
      [
        110.39063,
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      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "Gut Content Analyis of Zooplankton in the Indian Ocean, 2014-2015". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/gut-content-analyis-of-zooplankton-in-the-indian-ocean-2014-2015