The University of Southampton
University of Southampton Institutional Repository

Three new species of deep-sea Gromia (Protista, Rhizaria) from the bathyal and abyssal Weddell Sea, Antarctica

Three new species of deep-sea Gromia (Protista, Rhizaria) from the bathyal and abyssal Weddell Sea, Antarctica
Three new species of deep-sea Gromia (Protista, Rhizaria) from the bathyal and abyssal Weddell Sea, Antarctica
We describe three new species of the genus Gromia from bathyal and abyssal depths in the Weddell Sea. The new species are characterized by a combination of morphological and molecular criteria. All three species possess a distinct oral capsule and a layer of `honeycomb membranes', which form the inner part of the organic test wall. Both these features are typical of gromiids. Their identification as gromiids is confirmed by analyses of partial small subunit ribosomal DNA (SSU rDNA) gene sequences. Gromia marmorea sp. nov. is a rounded species with a prominent oral capsule and a characteristically mottled appearance. In Gromia melinus sp. nov., the test surface exhibits a polygonal pattern of ridges, with a layer of clay particles coating the surface between the ridges. Gromia winnetoui sp. nov. represents an elongate morphotype in which the organic test is enclosed within an agglutinated case, a feature previously unknown in gromiids. Phylogenetic analysis using the maximum-likelihood method revealed that all three species form distinct clades, reflecting the morphological differences among Weddell Sea species, as well as between deep-water Southern Ocean Gromia and previously described gromiids.
0024-4082
451-469
Gooday, Andrew J.
d9331d67-d518-4cfb-baed-9df3333b05b9
Rothe, Nina
c89f2da3-d68b-4a3a-9f96-d2212a8195b9
Cedhagen, Tomas
84648f74-cf5b-4c23-a7e5-fbcb244c895e
Fahrni, Jose
a505fc31-0d0a-4b5c-89b5-17b9bd7481eb
Hughes, J. Alan
c5df4494-3623-40f7-9445-ec9e697137a1
Page, Anton
76ebbfb8-4fe3-495c-afff-1f2f34977fee
Pearce, Richard B.
7d772b25-3ad0-4909-9a96-3a1a8111bc2f
Pawlowski, Jan
c3b6b0e6-fb24-4452-a762-770f7eb91d72
Gooday, Andrew J.
d9331d67-d518-4cfb-baed-9df3333b05b9
Rothe, Nina
c89f2da3-d68b-4a3a-9f96-d2212a8195b9
Cedhagen, Tomas
84648f74-cf5b-4c23-a7e5-fbcb244c895e
Fahrni, Jose
a505fc31-0d0a-4b5c-89b5-17b9bd7481eb
Hughes, J. Alan
c5df4494-3623-40f7-9445-ec9e697137a1
Page, Anton
76ebbfb8-4fe3-495c-afff-1f2f34977fee
Pearce, Richard B.
7d772b25-3ad0-4909-9a96-3a1a8111bc2f
Pawlowski, Jan
c3b6b0e6-fb24-4452-a762-770f7eb91d72

Gooday, Andrew J., Rothe, Nina, Cedhagen, Tomas, Fahrni, Jose, Hughes, J. Alan, Page, Anton, Pearce, Richard B. and Pawlowski, Jan (2009) Three new species of deep-sea Gromia (Protista, Rhizaria) from the bathyal and abyssal Weddell Sea, Antarctica. Zoological Journal of the Linnean Society, 157 (3), 451-469. (doi:10.1111/j.1096-3642.2009.00540.x).

Record type: Article

Abstract

We describe three new species of the genus Gromia from bathyal and abyssal depths in the Weddell Sea. The new species are characterized by a combination of morphological and molecular criteria. All three species possess a distinct oral capsule and a layer of `honeycomb membranes', which form the inner part of the organic test wall. Both these features are typical of gromiids. Their identification as gromiids is confirmed by analyses of partial small subunit ribosomal DNA (SSU rDNA) gene sequences. Gromia marmorea sp. nov. is a rounded species with a prominent oral capsule and a characteristically mottled appearance. In Gromia melinus sp. nov., the test surface exhibits a polygonal pattern of ridges, with a layer of clay particles coating the surface between the ridges. Gromia winnetoui sp. nov. represents an elongate morphotype in which the organic test is enclosed within an agglutinated case, a feature previously unknown in gromiids. Phylogenetic analysis using the maximum-likelihood method revealed that all three species form distinct clades, reflecting the morphological differences among Weddell Sea species, as well as between deep-water Southern Ocean Gromia and previously described gromiids.

Full text not available from this repository.

More information

Published date: November 2009

Identifiers

Local EPrints ID: 69614
URI: http://eprints.soton.ac.uk/id/eprint/69614
ISSN: 0024-4082
PURE UUID: 3bd3b073-e2dd-4833-a26a-b149faf6bd00

Catalogue record

Date deposited: 18 Nov 2009
Last modified: 19 Jul 2019 23:47

Export record

Altmetrics

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×