The ichthyofaunistic colonization and complex biogeographic history of the southern portion of the Southwest Atlantic Ocean
Here, we highlight the geological processes that resulted in the current conformation of the southern Southwest Atlantic Ocean, and explore the heterogeneous composition of the marine ichthyofauna found between 33° and 56° from a paleobiological perspective. During the early Cretaceous (140 Mya), th...
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ftcic:oai:digital.cic.gba.gob.ar:11746/12136 2023-12-31T10:00:30+01:00 The ichthyofaunistic colonization and complex biogeographic history of the southern portion of the Southwest Atlantic Ocean Figueroa, Daniel Enrique Barbini, Santiago Aldo Belleggia, Mauro Sabadin, David Ezequiel Román, Jorge Martín De Wysiecki, Agustín María 2023-02-26 application/pdf https://digital.cic.gba.gob.ar/handle/11746/12136 Inglés eng ISSN: 1439-0485 ISSN: 0173-9565 DOI:10.1111/maec.12742 https://digital.cic.gba.gob.ar/handle/11746/12136 http://creativecommons.org/licenses/by-nc-sa/4.0/ Biología Marina Limnología Drake Passage endemism evolutionary history ichthyofauna phylogeography Weddellian Province 2023 ftcic https://doi.org/10.1111/maec.12742 2023-12-07T02:20:19Z Here, we highlight the geological processes that resulted in the current conformation of the southern Southwest Atlantic Ocean, and explore the heterogeneous composition of the marine ichthyofauna found between 33° and 56° from a paleobiological perspective. During the early Cretaceous (140 Mya), the South Atlantic was still not formed, and Gondwana was probably a set of united plates with shallow continental waters. In the middle Cretaceous (112 Mya), the major Gondwanan plates started diverging from each other, allowing shallow marine intrusions and the diversification of an endemic fish fauna. By the end of the Mesozoic (66 Mya), the proto-South Atlantic connected with the North Atlantic, which was still part of the Tethys Sea, allowing its ichthyofauna to colonize the south and reach the Antarctic region. The opening of the Drake Passage in the Oligocene (33 Mya) enabled the cold waters of the Pacific Ocean to reach the South Atlantic, causing drastic effects on the thermophilic fauna and favoring the dispersion of cold-water species. Successive glaciations during the Quaternary (2 Myr to 10,000 years ago) resulted in the prevalence of Antarctic climatic conditions in the southern Southwest Atlantic. The long history of changing scenarios in the constitution of the southern Southwest Atlantic is reflected in the heterogeneous composition of the marine ichthyofauna between 33° and 56°S, which is characterized by a mixture of cosmopolitan, Tethyan, Pacific, Gondwanan, Antarctic, and endemic origins. Other/Unknown Material Antarc* Antarctic Drake Passage North Atlantic CIC-Digital (Repositorio de la Comisión de Investigaciones Científicas de la Provincia de Buenos Aires) Marine Ecology 44 2 |
institution |
Open Polar |
collection |
CIC-Digital (Repositorio de la Comisión de Investigaciones Científicas de la Provincia de Buenos Aires) |
op_collection_id |
ftcic |
language |
English |
topic |
Biología Marina Limnología Drake Passage endemism evolutionary history ichthyofauna phylogeography Weddellian Province |
spellingShingle |
Biología Marina Limnología Drake Passage endemism evolutionary history ichthyofauna phylogeography Weddellian Province Figueroa, Daniel Enrique Barbini, Santiago Aldo Belleggia, Mauro Sabadin, David Ezequiel Román, Jorge Martín De Wysiecki, Agustín María The ichthyofaunistic colonization and complex biogeographic history of the southern portion of the Southwest Atlantic Ocean |
topic_facet |
Biología Marina Limnología Drake Passage endemism evolutionary history ichthyofauna phylogeography Weddellian Province |
description |
Here, we highlight the geological processes that resulted in the current conformation of the southern Southwest Atlantic Ocean, and explore the heterogeneous composition of the marine ichthyofauna found between 33° and 56° from a paleobiological perspective. During the early Cretaceous (140 Mya), the South Atlantic was still not formed, and Gondwana was probably a set of united plates with shallow continental waters. In the middle Cretaceous (112 Mya), the major Gondwanan plates started diverging from each other, allowing shallow marine intrusions and the diversification of an endemic fish fauna. By the end of the Mesozoic (66 Mya), the proto-South Atlantic connected with the North Atlantic, which was still part of the Tethys Sea, allowing its ichthyofauna to colonize the south and reach the Antarctic region. The opening of the Drake Passage in the Oligocene (33 Mya) enabled the cold waters of the Pacific Ocean to reach the South Atlantic, causing drastic effects on the thermophilic fauna and favoring the dispersion of cold-water species. Successive glaciations during the Quaternary (2 Myr to 10,000 years ago) resulted in the prevalence of Antarctic climatic conditions in the southern Southwest Atlantic. The long history of changing scenarios in the constitution of the southern Southwest Atlantic is reflected in the heterogeneous composition of the marine ichthyofauna between 33° and 56°S, which is characterized by a mixture of cosmopolitan, Tethyan, Pacific, Gondwanan, Antarctic, and endemic origins. |
author |
Figueroa, Daniel Enrique Barbini, Santiago Aldo Belleggia, Mauro Sabadin, David Ezequiel Román, Jorge Martín De Wysiecki, Agustín María |
author_facet |
Figueroa, Daniel Enrique Barbini, Santiago Aldo Belleggia, Mauro Sabadin, David Ezequiel Román, Jorge Martín De Wysiecki, Agustín María |
author_sort |
Figueroa, Daniel Enrique |
title |
The ichthyofaunistic colonization and complex biogeographic history of the southern portion of the Southwest Atlantic Ocean |
title_short |
The ichthyofaunistic colonization and complex biogeographic history of the southern portion of the Southwest Atlantic Ocean |
title_full |
The ichthyofaunistic colonization and complex biogeographic history of the southern portion of the Southwest Atlantic Ocean |
title_fullStr |
The ichthyofaunistic colonization and complex biogeographic history of the southern portion of the Southwest Atlantic Ocean |
title_full_unstemmed |
The ichthyofaunistic colonization and complex biogeographic history of the southern portion of the Southwest Atlantic Ocean |
title_sort |
ichthyofaunistic colonization and complex biogeographic history of the southern portion of the southwest atlantic ocean |
publishDate |
2023 |
url |
https://digital.cic.gba.gob.ar/handle/11746/12136 |
genre |
Antarc* Antarctic Drake Passage North Atlantic |
genre_facet |
Antarc* Antarctic Drake Passage North Atlantic |
op_relation |
ISSN: 1439-0485 ISSN: 0173-9565 DOI:10.1111/maec.12742 https://digital.cic.gba.gob.ar/handle/11746/12136 |
op_rights |
http://creativecommons.org/licenses/by-nc-sa/4.0/ |
op_doi |
https://doi.org/10.1111/maec.12742 |
container_title |
Marine Ecology |
container_volume |
44 |
container_issue |
2 |
_version_ |
1786850716853207040 |