Global genetic homogeneity in the deep-sea foraminiferan Epistominella exigua (Rotaliida: Pseudoparrellidae)
Global genetic homogeneity in the deep-sea foraminiferan Epistominella exigua (Rotaliida: Pseudoparrellidae)
Epistominella exigua is one of the most common deep-sea foraminiferal morphospecies and has a world-wide
distribution. A recent molecular study revealed high genetic similarity between Arctic, Atlantic and Antarctic
populations of this species. Here, we show that the small-subunit (SSU) and internal transcribed spacer (ITS) rDNA
sequences of an E. exigua population from Pacific are almost identical to those reported previously from the other three
oceans. This result confirms the genetic homogeneity of E. exigua, which contrasts with the prevalence of highly
differentiated populations in planktonic and shallow-water benthic foraminiferans. We discuss special features of
diversifications mechanisms in the deep sea that may be responsible for the lack of genetic differentiation and global
distribution of some meiofauna species.
deep-sea diversity, meiofauna, Foraminifera, SSU rDNA, ITS rDNA, geographic distribution
23-32
Lecroq, Beatrice
e343a097-a46c-4f37-98e9-53d63e95ffee
Gooday, Andrew John
d9331d67-d518-4cfb-baed-9df3333b05b9
Pawlowski, Jan
c3b6b0e6-fb24-4452-a762-770f7eb91d72
2009
Lecroq, Beatrice
e343a097-a46c-4f37-98e9-53d63e95ffee
Gooday, Andrew John
d9331d67-d518-4cfb-baed-9df3333b05b9
Pawlowski, Jan
c3b6b0e6-fb24-4452-a762-770f7eb91d72
Lecroq, Beatrice, Gooday, Andrew John and Pawlowski, Jan
(2009)
Global genetic homogeneity in the deep-sea foraminiferan Epistominella exigua (Rotaliida: Pseudoparrellidae).
Zootaxa, 2096, .
Abstract
Epistominella exigua is one of the most common deep-sea foraminiferal morphospecies and has a world-wide
distribution. A recent molecular study revealed high genetic similarity between Arctic, Atlantic and Antarctic
populations of this species. Here, we show that the small-subunit (SSU) and internal transcribed spacer (ITS) rDNA
sequences of an E. exigua population from Pacific are almost identical to those reported previously from the other three
oceans. This result confirms the genetic homogeneity of E. exigua, which contrasts with the prevalence of highly
differentiated populations in planktonic and shallow-water benthic foraminiferans. We discuss special features of
diversifications mechanisms in the deep sea that may be responsible for the lack of genetic differentiation and global
distribution of some meiofauna species.
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Published date: 2009
Keywords:
deep-sea diversity, meiofauna, Foraminifera, SSU rDNA, ITS rDNA, geographic distribution
Identifiers
Local EPrints ID: 71875
URI: http://eprints.soton.ac.uk/id/eprint/71875
ISSN: 1175-5334
PURE UUID: d4a800cf-ff7e-4541-b974-95d11f816ac4
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Date deposited: 07 Jan 2010
Last modified: 07 Jan 2022 23:42
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Contributors
Author:
Beatrice Lecroq
Author:
Andrew John Gooday
Author:
Jan Pawlowski
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