Brachyuran crabs (Crustacea, Decapoda) from the remote oceanic Archipelago Trindade and Martin Vaz, South Atlantic Ocean
Forty species of shore and shallow water brachyuran crabs are reported from the remote oceanic Archipelago Trindade and Martin Vaz (TMV), 11 of which were previously known from Trindade Island, 28 are recorded from the Archipelago for the first time, and one is a new species, Epialtus parvulus sp. n...
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2022
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ftmagnoliapress:oai:https://mapress.com/oai/:article/46064 2023-05-15T18:21:20+02:00 Brachyuran crabs (Crustacea, Decapoda) from the remote oceanic Archipelago Trindade and Martin Vaz, South Atlantic Ocean TAVARES, MARCOS MENDONÇA , JOEL BRAGA DE JR. 2022-06-02 application/pdf https://www.mapress.com/zt/article/view/zootaxa.5146.1.1 eng eng Mangolia Press https://www.mapress.com/zt/article/view/zootaxa.5146.1.1/47596 https://www.mapress.com/zt/article/view/zootaxa.5146.1.1 Zootaxa; Vol. 5146 No. 1: 2 Jun. 2022; 1-129 1175-5334 1175-5326 10.11646/zootaxa.5146.1 Crustacea São Pedro and São Paulo Archipelago Oceanic islands Ascension Fernando de Noronha Rocas Atoll Saint Helena info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2022 ftmagnoliapress https://doi.org/10.11646/zootaxa.5146.1 2022-06-07T17:09:50Z Forty species of shore and shallow water brachyuran crabs are reported from the remote oceanic Archipelago Trindade and Martin Vaz (TMV), 11 of which were previously known from Trindade Island, 28 are recorded from the Archipelago for the first time, and one is a new species, Epialtus parvulus sp. nov. This brings the total known shore and shallow water decapod fauna of TMV to 99 species. The opportunity is taken here to elaborate on the taxonomy of the species reported from TMV. One new genus, Mecataleptodius, is recognized for two species, Cancer parvulus Fabricius, 1793, its type species, and Cataleptodius olsoni Manning & Chace, 1990, endemic to Ascension Island. The following seven nominal species are synonymized: Acanthonyx dissimulatus Coelho in Coelho & Torres, 1993; A. scutiformis (Dana, 1851a); Dromia gouveai Melo & Campos Junior, 1999; Epialtus portoricensis Rathbun, 1923; Ranilia guinotae Melo & Campos Junior, 1994; R. saldanhai H. Rodrigues da Costa, 1970; and Omalacantha garthi (Lemos de Castro, 1953). TMV is a subset of the western Atlantic crab fauna (23 species or 57.5%), also including 8 (20%) amphi-Atlantic species, 3 (7.5%) amphi-American, 3 (7.5%) endemic, 2 (5%) cosmopolitan, 1 (2.5%) known from both sides of the Atlantic and the Indo-West Pacific. The crab fauna of TMV, Ascension (AS) and Saint Helena (SH) are compared with one another as well as with that of the oceanic islands Fernando de Noronha (FN) and the Rocas Atoll (RA) by means of nonmetric multidimensional scaling (NMDS) applied to a dissimilarity matrix generated by Jaccard’s coefficient. TMV-FN-RA and AS-SH clustered into two distinct groups according to the composition of their crab fauna. The NMDS analysis ranked the species that cause segregation of the crab faunal assemblages among TMV, AS, and SH, while revealing a gradient in species composition between the two groups of islands (TMV-FN-RA and AS-SH) formed by the amphi-Atlantic species. Island isolation, age and size alone do not explain the existing ... Article in Journal/Newspaper South Atlantic Ocean Magnolia press Pacific Rocas ENVELOPE(-56.948,-56.948,-63.398,-63.398) Zootaxa 5146 1 |
institution |
Open Polar |
collection |
Magnolia press |
op_collection_id |
ftmagnoliapress |
language |
English |
topic |
Crustacea São Pedro and São Paulo Archipelago Oceanic islands Ascension Fernando de Noronha Rocas Atoll Saint Helena |
spellingShingle |
Crustacea São Pedro and São Paulo Archipelago Oceanic islands Ascension Fernando de Noronha Rocas Atoll Saint Helena TAVARES, MARCOS MENDONÇA , JOEL BRAGA DE JR. Brachyuran crabs (Crustacea, Decapoda) from the remote oceanic Archipelago Trindade and Martin Vaz, South Atlantic Ocean |
topic_facet |
Crustacea São Pedro and São Paulo Archipelago Oceanic islands Ascension Fernando de Noronha Rocas Atoll Saint Helena |
description |
Forty species of shore and shallow water brachyuran crabs are reported from the remote oceanic Archipelago Trindade and Martin Vaz (TMV), 11 of which were previously known from Trindade Island, 28 are recorded from the Archipelago for the first time, and one is a new species, Epialtus parvulus sp. nov. This brings the total known shore and shallow water decapod fauna of TMV to 99 species. The opportunity is taken here to elaborate on the taxonomy of the species reported from TMV. One new genus, Mecataleptodius, is recognized for two species, Cancer parvulus Fabricius, 1793, its type species, and Cataleptodius olsoni Manning & Chace, 1990, endemic to Ascension Island. The following seven nominal species are synonymized: Acanthonyx dissimulatus Coelho in Coelho & Torres, 1993; A. scutiformis (Dana, 1851a); Dromia gouveai Melo & Campos Junior, 1999; Epialtus portoricensis Rathbun, 1923; Ranilia guinotae Melo & Campos Junior, 1994; R. saldanhai H. Rodrigues da Costa, 1970; and Omalacantha garthi (Lemos de Castro, 1953). TMV is a subset of the western Atlantic crab fauna (23 species or 57.5%), also including 8 (20%) amphi-Atlantic species, 3 (7.5%) amphi-American, 3 (7.5%) endemic, 2 (5%) cosmopolitan, 1 (2.5%) known from both sides of the Atlantic and the Indo-West Pacific. The crab fauna of TMV, Ascension (AS) and Saint Helena (SH) are compared with one another as well as with that of the oceanic islands Fernando de Noronha (FN) and the Rocas Atoll (RA) by means of nonmetric multidimensional scaling (NMDS) applied to a dissimilarity matrix generated by Jaccard’s coefficient. TMV-FN-RA and AS-SH clustered into two distinct groups according to the composition of their crab fauna. The NMDS analysis ranked the species that cause segregation of the crab faunal assemblages among TMV, AS, and SH, while revealing a gradient in species composition between the two groups of islands (TMV-FN-RA and AS-SH) formed by the amphi-Atlantic species. Island isolation, age and size alone do not explain the existing ... |
format |
Article in Journal/Newspaper |
author |
TAVARES, MARCOS MENDONÇA , JOEL BRAGA DE JR. |
author_facet |
TAVARES, MARCOS MENDONÇA , JOEL BRAGA DE JR. |
author_sort |
TAVARES, MARCOS |
title |
Brachyuran crabs (Crustacea, Decapoda) from the remote oceanic Archipelago Trindade and Martin Vaz, South Atlantic Ocean |
title_short |
Brachyuran crabs (Crustacea, Decapoda) from the remote oceanic Archipelago Trindade and Martin Vaz, South Atlantic Ocean |
title_full |
Brachyuran crabs (Crustacea, Decapoda) from the remote oceanic Archipelago Trindade and Martin Vaz, South Atlantic Ocean |
title_fullStr |
Brachyuran crabs (Crustacea, Decapoda) from the remote oceanic Archipelago Trindade and Martin Vaz, South Atlantic Ocean |
title_full_unstemmed |
Brachyuran crabs (Crustacea, Decapoda) from the remote oceanic Archipelago Trindade and Martin Vaz, South Atlantic Ocean |
title_sort |
brachyuran crabs (crustacea, decapoda) from the remote oceanic archipelago trindade and martin vaz, south atlantic ocean |
publisher |
Mangolia Press |
publishDate |
2022 |
url |
https://www.mapress.com/zt/article/view/zootaxa.5146.1.1 |
long_lat |
ENVELOPE(-56.948,-56.948,-63.398,-63.398) |
geographic |
Pacific Rocas |
geographic_facet |
Pacific Rocas |
genre |
South Atlantic Ocean |
genre_facet |
South Atlantic Ocean |
op_source |
Zootaxa; Vol. 5146 No. 1: 2 Jun. 2022; 1-129 1175-5334 1175-5326 10.11646/zootaxa.5146.1 |
op_relation |
https://www.mapress.com/zt/article/view/zootaxa.5146.1.1/47596 https://www.mapress.com/zt/article/view/zootaxa.5146.1.1 |
op_doi |
https://doi.org/10.11646/zootaxa.5146.1 |
container_title |
Zootaxa |
container_volume |
5146 |
container_issue |
1 |
_version_ |
1766200545972846592 |