Possible causes of amphi-Atlantic distribution of Orchestia gammarellus (Pallas, 1776) (Crustacea, Amphipoda, Talitridae) in the North Atlantic: a review
Hypotheses concerning the modern distribution of Orchestia gammarellus (Crustacea, Amphipoda, Talitridae) and its causes in the North Atlantic are discussed. The synanthropic dispersal hypothesis of Henzler and Ingólfsson (2008) considers O. gammarellus as originating on the eastern shore of the Nor...
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Language: | English |
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2023
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Online Access: | https://doi.org/10.3897/zse.99.95980 https://zse.pensoft.net/article/95980/ |
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ftpensoft:10.3897/zse.99.95980 2023-05-15T16:48:09+02:00 Possible causes of amphi-Atlantic distribution of Orchestia gammarellus (Pallas, 1776) (Crustacea, Amphipoda, Talitridae) in the North Atlantic: a review Wildish,David J. McDonald,John. H. 2023 text/html https://doi.org/10.3897/zse.99.95980 https://zse.pensoft.net/article/95980/ en eng Pensoft Publishers info:eu-repo/semantics/altIdentifier/eissn/1860-0743 info:eu-repo/semantics/altIdentifier/pissn/1435-1935 info:eu-repo/semantics/openAccess Zoosystematics and Evolution 99(1): 55-62 evolution dispersal North Atlantic O. gammarellus zoogeography Review Article 2023 ftpensoft https://doi.org/10.3897/zse.99.95980 2023-01-10T01:00:13Z Hypotheses concerning the modern distribution of Orchestia gammarellus (Crustacea, Amphipoda, Talitridae) and its causes in the North Atlantic are discussed. The synanthropic dispersal hypothesis of Henzler and Ingólfsson (2008) considers O. gammarellus as originating on the eastern shore of the North Atlantic and being transported by humans to Iceland and the western Atlantic shore (Newfoundland and the Maritime Provinces of Canada). The Eocene and natural dispersal hypothesis of Myers and Lowry (2020) proposes a geologically earlier origin of O. gammarellus when the west and east shores of the North Atlantic were still connected. Present day amphi-Atlantic distribution was explained by vicariance, with the vicariant event causing separation of O. gammarellus being continental drift drawing apart the west and east shores of the North Atlantic. A post-glacial natural dispersal hypothesis proposed herein, involves transport on ice floes or in driftwood from European shores to Iceland and the Atlantic Provinces of Canada. The small genetic distances amongst populations found by Henzler and Ingólfsson (2008) at the COI gene are inconsistent with the Eocene vicariance hypothesis. On evolutionary grounds, we question Myers and Lowry’s (2020) designation of the Icelandic and Canadian populations as a new species of Orchestia. Existing molecular and morphological data are insufficient to distinguish between human-aided dispersal and natural rafting. Review Iceland Newfoundland North Atlantic Pensoft Publishers Canada Lowry ENVELOPE(-64.150,-64.150,-84.550,-84.550) Myers ENVELOPE(170.033,170.033,-72.117,-72.117) Zoosystematics and Evolution 99 1 55 62 |
institution |
Open Polar |
collection |
Pensoft Publishers |
op_collection_id |
ftpensoft |
language |
English |
topic |
evolution dispersal North Atlantic O. gammarellus zoogeography |
spellingShingle |
evolution dispersal North Atlantic O. gammarellus zoogeography Wildish,David J. McDonald,John. H. Possible causes of amphi-Atlantic distribution of Orchestia gammarellus (Pallas, 1776) (Crustacea, Amphipoda, Talitridae) in the North Atlantic: a review |
topic_facet |
evolution dispersal North Atlantic O. gammarellus zoogeography |
description |
Hypotheses concerning the modern distribution of Orchestia gammarellus (Crustacea, Amphipoda, Talitridae) and its causes in the North Atlantic are discussed. The synanthropic dispersal hypothesis of Henzler and Ingólfsson (2008) considers O. gammarellus as originating on the eastern shore of the North Atlantic and being transported by humans to Iceland and the western Atlantic shore (Newfoundland and the Maritime Provinces of Canada). The Eocene and natural dispersal hypothesis of Myers and Lowry (2020) proposes a geologically earlier origin of O. gammarellus when the west and east shores of the North Atlantic were still connected. Present day amphi-Atlantic distribution was explained by vicariance, with the vicariant event causing separation of O. gammarellus being continental drift drawing apart the west and east shores of the North Atlantic. A post-glacial natural dispersal hypothesis proposed herein, involves transport on ice floes or in driftwood from European shores to Iceland and the Atlantic Provinces of Canada. The small genetic distances amongst populations found by Henzler and Ingólfsson (2008) at the COI gene are inconsistent with the Eocene vicariance hypothesis. On evolutionary grounds, we question Myers and Lowry’s (2020) designation of the Icelandic and Canadian populations as a new species of Orchestia. Existing molecular and morphological data are insufficient to distinguish between human-aided dispersal and natural rafting. |
format |
Review |
author |
Wildish,David J. McDonald,John. H. |
author_facet |
Wildish,David J. McDonald,John. H. |
author_sort |
Wildish,David J. |
title |
Possible causes of amphi-Atlantic distribution of Orchestia gammarellus (Pallas, 1776) (Crustacea, Amphipoda, Talitridae) in the North Atlantic: a review |
title_short |
Possible causes of amphi-Atlantic distribution of Orchestia gammarellus (Pallas, 1776) (Crustacea, Amphipoda, Talitridae) in the North Atlantic: a review |
title_full |
Possible causes of amphi-Atlantic distribution of Orchestia gammarellus (Pallas, 1776) (Crustacea, Amphipoda, Talitridae) in the North Atlantic: a review |
title_fullStr |
Possible causes of amphi-Atlantic distribution of Orchestia gammarellus (Pallas, 1776) (Crustacea, Amphipoda, Talitridae) in the North Atlantic: a review |
title_full_unstemmed |
Possible causes of amphi-Atlantic distribution of Orchestia gammarellus (Pallas, 1776) (Crustacea, Amphipoda, Talitridae) in the North Atlantic: a review |
title_sort |
possible causes of amphi-atlantic distribution of orchestia gammarellus (pallas, 1776) (crustacea, amphipoda, talitridae) in the north atlantic: a review |
publisher |
Pensoft Publishers |
publishDate |
2023 |
url |
https://doi.org/10.3897/zse.99.95980 https://zse.pensoft.net/article/95980/ |
long_lat |
ENVELOPE(-64.150,-64.150,-84.550,-84.550) ENVELOPE(170.033,170.033,-72.117,-72.117) |
geographic |
Canada Lowry Myers |
geographic_facet |
Canada Lowry Myers |
genre |
Iceland Newfoundland North Atlantic |
genre_facet |
Iceland Newfoundland North Atlantic |
op_source |
Zoosystematics and Evolution 99(1): 55-62 |
op_relation |
info:eu-repo/semantics/altIdentifier/eissn/1860-0743 info:eu-repo/semantics/altIdentifier/pissn/1435-1935 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3897/zse.99.95980 |
container_title |
Zoosystematics and Evolution |
container_volume |
99 |
container_issue |
1 |
container_start_page |
55 |
op_container_end_page |
62 |
_version_ |
1766038272220332032 |