https://doi.org/10.3354/ame01981

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Document Type

Article

Department/Program

Virginia Institute of Marine Science

Publication Date

2022

Journal

Aquatic Microbial Ecology

Volume

88

Issue

19

First Page

24

Abstract

The pteropod (pelagic snail) Limacina helicina antarctica is a dominant grazer along
the Western Antarctic Peninsula (WAP) and plays an important role in regional food web dynamics and biogeochemical cycling. For the first time, we examined the gut microbiome and feeding ecology of L. h. antarctica based on 16S and 18S rRNA gene sequences of gut contents in the WAP during austral summer. Eukaryotic gut contents of L. h. antarctica indicate that this species predominantly feeds on diatoms and dinoflagellates, supplementing its diet with ciliates and foraminifera. Mollicutes bacteria were a consistent component of the gut microbiome. Determining the gut microbiome and feeding ecology of L. h.antarctica aids in identifying the underlying mechanisms controlling pteropod abundance and distribution in a region of rapid environmental change.

Keywords

Zooplankton, Gut microbiome, Southern Ocean, Diatom, Dinoflagellate, Mollicutes bacteria

Publication Statement

Accepted manuscript version.

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Supplementary Material

Available for download on Wednesday, February 08, 2023

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