Taxonomic relationships in the genus Ammonia (foraminifera) based on ribosomal DNA sequences

Autor(en)

Maria Holzmann, Jan Pawlowski

Abstrakt

The genus Ammonia is a common benthic foraminifer which is widely distributed in nearshore marine environments. Its large morphological variability causes considerable difficulties in species identification. In the present study, we investigated taxonomic relationships in Ammonia by using a molecular approach based on ribosomal DNA sequences. We obtained 149 partial large subunit ribosomal DNA (LSU rDNA) sequences and 23 small subunit ribosomal DNA (SSU rDNA) sequences from 88 living Ammonia specimens which were collected from free-living populations in 14 localities. Sequence analysis revealed the presence of eight distinct genotypic groups (T1-T7, T9) and one distinct genotype that is represented by one specimen (T8). Examination of morphological characters shows that only one genotypic group can be clearly distinguished by its morphology. Biogeographical and ecological features are used for an additional characterization and it seems that the different groups live in relatively well defined environmental conditions and that only one genotypic group is cosmopolitan, while the others have a rather restricted geographical distribution. According to our study, three of the genotypic groups can be regarded as distinct species. J. Micropalaeontol. 19(1): 85-95, May 2000.

Organisation(en)

Institut für Paläontologie

Externe Organisation(en)

Universität Genf

Journal

Journal of Micropalaeontology

Band

19

Seiten

85-95

Anzahl der Seiten

11

ISSN

0262-821X

Publikationsdatum

2000

Peer-reviewed

Ja

ÖFOS 2012

105118 Paläontologie

Sustainable Development Goals

SDG 14 – Leben unter Wasser

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/1dbd4996-65f6-4030-b01a-435cf2f017b1