Parallel shape divergence between ecotypes of the limpet Nacella concinna along the Antarctic Peninsula: a new model species for parallel evolution?
Parallel phenotypic divergence is the independent differentiation between phenotypes of the same lineage or species occupying ecologically similar environments in different populations. We tested in the Antarctic limpet Nacella concinna the extent of parallel morphological divergence in littoral and...
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ftawi:oai:epic.awi.de:55264 2024-09-15T17:48:00+00:00 Parallel shape divergence between ecotypes of the limpet Nacella concinna along the Antarctic Peninsula: a new model species for parallel evolution? de Aranzamendi, María Carla Martínez, Juan José Held, Christoph Sahade, Ricardo 2022 application/pdf https://epic.awi.de/id/eprint/55264/ https://epic.awi.de/id/eprint/55264/1/Nacella.pdf https://doi.org/10.1016/j.zool.2021.125983 https://hdl.handle.net/10013/epic.daac46b3-1065-438a-8dd3-d381d6928b65 unknown https://epic.awi.de/id/eprint/55264/1/Nacella.pdf de Aranzamendi, M. C. , Martínez, J. J. , Held, C. orcid:0000-0001-8854-3234 and Sahade, R. (2022) Parallel shape divergence between ecotypes of the limpet Nacella concinna along the Antarctic Peninsula: a new model species for parallel evolution? , Zoology, 150 , p. 125983 . doi:10.1016/j.zool.2021.125983 <https://doi.org/10.1016/j.zool.2021.125983> , hdl:10013/epic.daac46b3-1065-438a-8dd3-d381d6928b65 EPIC3Zoology, 150, pp. 125983, ISSN: 09442006 Article isiRev 2022 ftawi https://doi.org/10.1016/j.zool.2021.125983 2024-06-24T04:27:29Z Parallel phenotypic divergence is the independent differentiation between phenotypes of the same lineage or species occupying ecologically similar environments in different populations. We tested in the Antarctic limpet Nacella concinna the extent of parallel morphological divergence in littoral and sublittoral ecotypes throughout its distribution range. These ecotypes differ in morphological, behavioural and physiological characteristics. We studied the lateral and dorsal outlines of shells and the genetic variation of the mitochondrial gene Cytochrome Oxidase subunit I from both ecotypes in 17 sample sites along more than 2,000 km. The genetic data indicate that both ecotypes belong to a single evolutionary lineage. The magnitude and direction of phenotypic variation differ between ecotypes across sample sites; completely parallel ecotype-pairs (i.e., they diverge in the same magnitude and in the same direction) were detected in 84.85% of lateral and 65.15% in dorsal view comparisons. Besides, specific traits (relative shell height, position of shell apex, and elliptical/pear-shape outline variation) showed high parallelism. We observed weak morphological covariation between the two shape shell views, indicating that distinct evolutionary forces and environmental pressures could be acting on this limpet shell shape. Our results demonstrate there is a strong parallel morphological divergence pattern in N. concinna along its distribution, making this Antarctic species a suitable model for the study of different evolutionary forces shaping the shell evolution of this limpet. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Zoology 150 125983 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
description |
Parallel phenotypic divergence is the independent differentiation between phenotypes of the same lineage or species occupying ecologically similar environments in different populations. We tested in the Antarctic limpet Nacella concinna the extent of parallel morphological divergence in littoral and sublittoral ecotypes throughout its distribution range. These ecotypes differ in morphological, behavioural and physiological characteristics. We studied the lateral and dorsal outlines of shells and the genetic variation of the mitochondrial gene Cytochrome Oxidase subunit I from both ecotypes in 17 sample sites along more than 2,000 km. The genetic data indicate that both ecotypes belong to a single evolutionary lineage. The magnitude and direction of phenotypic variation differ between ecotypes across sample sites; completely parallel ecotype-pairs (i.e., they diverge in the same magnitude and in the same direction) were detected in 84.85% of lateral and 65.15% in dorsal view comparisons. Besides, specific traits (relative shell height, position of shell apex, and elliptical/pear-shape outline variation) showed high parallelism. We observed weak morphological covariation between the two shape shell views, indicating that distinct evolutionary forces and environmental pressures could be acting on this limpet shell shape. Our results demonstrate there is a strong parallel morphological divergence pattern in N. concinna along its distribution, making this Antarctic species a suitable model for the study of different evolutionary forces shaping the shell evolution of this limpet. |
format |
Article in Journal/Newspaper |
author |
de Aranzamendi, María Carla Martínez, Juan José Held, Christoph Sahade, Ricardo |
spellingShingle |
de Aranzamendi, María Carla Martínez, Juan José Held, Christoph Sahade, Ricardo Parallel shape divergence between ecotypes of the limpet Nacella concinna along the Antarctic Peninsula: a new model species for parallel evolution? |
author_facet |
de Aranzamendi, María Carla Martínez, Juan José Held, Christoph Sahade, Ricardo |
author_sort |
de Aranzamendi, María Carla |
title |
Parallel shape divergence between ecotypes of the limpet Nacella concinna along the Antarctic Peninsula: a new model species for parallel evolution? |
title_short |
Parallel shape divergence between ecotypes of the limpet Nacella concinna along the Antarctic Peninsula: a new model species for parallel evolution? |
title_full |
Parallel shape divergence between ecotypes of the limpet Nacella concinna along the Antarctic Peninsula: a new model species for parallel evolution? |
title_fullStr |
Parallel shape divergence between ecotypes of the limpet Nacella concinna along the Antarctic Peninsula: a new model species for parallel evolution? |
title_full_unstemmed |
Parallel shape divergence between ecotypes of the limpet Nacella concinna along the Antarctic Peninsula: a new model species for parallel evolution? |
title_sort |
parallel shape divergence between ecotypes of the limpet nacella concinna along the antarctic peninsula: a new model species for parallel evolution? |
publishDate |
2022 |
url |
https://epic.awi.de/id/eprint/55264/ https://epic.awi.de/id/eprint/55264/1/Nacella.pdf https://doi.org/10.1016/j.zool.2021.125983 https://hdl.handle.net/10013/epic.daac46b3-1065-438a-8dd3-d381d6928b65 |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_source |
EPIC3Zoology, 150, pp. 125983, ISSN: 09442006 |
op_relation |
https://epic.awi.de/id/eprint/55264/1/Nacella.pdf de Aranzamendi, M. C. , Martínez, J. J. , Held, C. orcid:0000-0001-8854-3234 and Sahade, R. (2022) Parallel shape divergence between ecotypes of the limpet Nacella concinna along the Antarctic Peninsula: a new model species for parallel evolution? , Zoology, 150 , p. 125983 . doi:10.1016/j.zool.2021.125983 <https://doi.org/10.1016/j.zool.2021.125983> , hdl:10013/epic.daac46b3-1065-438a-8dd3-d381d6928b65 |
op_doi |
https://doi.org/10.1016/j.zool.2021.125983 |
container_title |
Zoology |
container_volume |
150 |
container_start_page |
125983 |
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1810288638782603264 |