Amphipods in estuaries: the sibling species low salinity switch hypothesis
A novel low salinity switch hypothesis is proposed to account for the speciation of an obligate estuarine (oligohaline) amphipod, Orchestia aestuarensis, from a closely-related one, Orchestia mediterranea, found in both estuarine and marine conditions (euryhaline). The underlying genetic mechanisms...
Published in: | Zoosystematics and Evolution |
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2020
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Online Access: | https://zenodo.org/record/4293051 https://doi.org/10.3897/zse.96.55896 |
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ftzenodo:oai:zenodo.org:4293051 2023-05-15T17:32:52+02:00 Amphipods in estuaries: the sibling species low salinity switch hypothesis Wildish, David J. Radulovici, Adriana E. 2020-11-19 https://zenodo.org/record/4293051 https://doi.org/10.3897/zse.96.55896 unknown Pensoft Publishers doi:10.3897/zse.96.55896.figure3 doi:10.3897/zse.96.55896.figure2 doi:10.3897/zse.96.55896.figure1 https://zenodo.org/communities/biosyslit https://zenodo.org/record/4293051 https://doi.org/10.3897/zse.96.55896 oai:zenodo.org:4293051 info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode Zoosystematics and Evolution 96((2)) 797-805 Low salinity switch hypothesis sibling species amphipods evolution estuaries O. mediterranea O. aestuarensis info:eu-repo/semantics/article publication-article 2020 ftzenodo https://doi.org/10.3897/zse.96.5589610.3897/zse.96.55896.figure310.3897/zse.96.55896.figure210.3897/zse.96.55896.figure1 2023-03-10T22:44:26Z A novel low salinity switch hypothesis is proposed to account for the speciation of an obligate estuarine (oligohaline) amphipod, Orchestia aestuarensis, from a closely-related one, Orchestia mediterranea, found in both estuarine and marine conditions (euryhaline). The underlying genetic mechanisms could involve: 1. A dimorphic allele, or linked set of alleles, carried by the euryhaline amphipod which controls the ability to breed in low salinity conditions in estuaries and which is selected for in these conditions, producing the oligohaline amphipod. 2. A genetically-assimilated gene or genes, controlling the ability to breed in low salinity conditions in estuaries, which is/are "switched on" by low salinity conditions. 3. Allopatric speciation from a euryhaline to an oligohaline amphipod species where low salinity conditions is the selective switch. It is possible that other estuarine, sibling, amphipod pairs have evolved by salinity switching. In the North Atlantic coastal region, this could include: Gammarus tigrinus/G. daiberi and G. salinus/G. zaddachi (Amphipoda, Gammaridae). Article in Journal/Newspaper North Atlantic Zenodo Zoosystematics and Evolution 96 2 797 805 |
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ftzenodo |
language |
unknown |
topic |
Low salinity switch hypothesis sibling species amphipods evolution estuaries O. mediterranea O. aestuarensis |
spellingShingle |
Low salinity switch hypothesis sibling species amphipods evolution estuaries O. mediterranea O. aestuarensis Wildish, David J. Radulovici, Adriana E. Amphipods in estuaries: the sibling species low salinity switch hypothesis |
topic_facet |
Low salinity switch hypothesis sibling species amphipods evolution estuaries O. mediterranea O. aestuarensis |
description |
A novel low salinity switch hypothesis is proposed to account for the speciation of an obligate estuarine (oligohaline) amphipod, Orchestia aestuarensis, from a closely-related one, Orchestia mediterranea, found in both estuarine and marine conditions (euryhaline). The underlying genetic mechanisms could involve: 1. A dimorphic allele, or linked set of alleles, carried by the euryhaline amphipod which controls the ability to breed in low salinity conditions in estuaries and which is selected for in these conditions, producing the oligohaline amphipod. 2. A genetically-assimilated gene or genes, controlling the ability to breed in low salinity conditions in estuaries, which is/are "switched on" by low salinity conditions. 3. Allopatric speciation from a euryhaline to an oligohaline amphipod species where low salinity conditions is the selective switch. It is possible that other estuarine, sibling, amphipod pairs have evolved by salinity switching. In the North Atlantic coastal region, this could include: Gammarus tigrinus/G. daiberi and G. salinus/G. zaddachi (Amphipoda, Gammaridae). |
format |
Article in Journal/Newspaper |
author |
Wildish, David J. Radulovici, Adriana E. |
author_facet |
Wildish, David J. Radulovici, Adriana E. |
author_sort |
Wildish, David J. |
title |
Amphipods in estuaries: the sibling species low salinity switch hypothesis |
title_short |
Amphipods in estuaries: the sibling species low salinity switch hypothesis |
title_full |
Amphipods in estuaries: the sibling species low salinity switch hypothesis |
title_fullStr |
Amphipods in estuaries: the sibling species low salinity switch hypothesis |
title_full_unstemmed |
Amphipods in estuaries: the sibling species low salinity switch hypothesis |
title_sort |
amphipods in estuaries: the sibling species low salinity switch hypothesis |
publisher |
Pensoft Publishers |
publishDate |
2020 |
url |
https://zenodo.org/record/4293051 https://doi.org/10.3897/zse.96.55896 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Zoosystematics and Evolution 96((2)) 797-805 |
op_relation |
doi:10.3897/zse.96.55896.figure3 doi:10.3897/zse.96.55896.figure2 doi:10.3897/zse.96.55896.figure1 https://zenodo.org/communities/biosyslit https://zenodo.org/record/4293051 https://doi.org/10.3897/zse.96.55896 oai:zenodo.org:4293051 |
op_rights |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/legalcode |
op_doi |
https://doi.org/10.3897/zse.96.5589610.3897/zse.96.55896.figure310.3897/zse.96.55896.figure210.3897/zse.96.55896.figure1 |
container_title |
Zoosystematics and Evolution |
container_volume |
96 |
container_issue |
2 |
container_start_page |
797 |
op_container_end_page |
805 |
_version_ |
1766131154171199488 |