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

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 abu...

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Bibliographic Details
Other Authors: SWADLING, KERRIE (hasPrincipalInvestigator), SWADLING, KERRIE (processor), Australian Antarctic Data Centre (publisher)
Format: Dataset
Language:unknown
Published: Australian Antarctic Data Centre
Subjects:
biota
oceans
ZOOPLANKTON
EARTH SCIENCE
BIOSPHERE
AQUATIC ECOSYSTEMS
PLANKTON
PHYTOPLANKTON
BIOLOGICAL CLASSIFICATION
PROTISTS
FLUORESCENCE MICROSCOPY
R/V UM &gt
R/V UMITAKA MARU
SHIPS
GEOGRAPHIC REGION &gt
POLAR
OCEAN &gt
SOUTHERN OCEAN
INDIAN OCEAN
Indian
Southern Ocean
Online Access:https://researchdata.edu.au/gut-content-analyis-2014-2015/1701375
https://doi.org/10.26179/mkbe-8b20
https://data.aad.gov.au/metadata/records/AAS_4331_Zooplankton_Gut_Contents
http://nla.gov.au/nla.party-617536
Description
Summary: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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