Diversity of Tanaidacea (Crustacea: Peracarida) in the world's oceans--how far have we come?

Tanaidaceans are small peracarid crustaceans which occur in all marine habitats, over the full range of depths, and rarely into fresh waters. Yet they have no obligate dispersive phase in their life-cycle. Populations are thus inevitably isolated, and allopatric speciation and high regional diversit...

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Autores principales:	Magdalena Blazewicz-Paszkowycz, Roger Bamber, Gary Anderson
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3c4c510930c544e89b6e141bfaec94e6
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spelling	oai:doaj.org-article:3c4c510930c544e89b6e141bfaec94e62021-11-18T07:23:18ZDiversity of Tanaidacea (Crustacea: Peracarida) in the world's oceans--how far have we come?1932-620310.1371/journal.pone.0033068https://doaj.org/article/3c4c510930c544e89b6e141bfaec94e62012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22496741/?tool=EBIhttps://doaj.org/toc/1932-6203Tanaidaceans are small peracarid crustaceans which occur in all marine habitats, over the full range of depths, and rarely into fresh waters. Yet they have no obligate dispersive phase in their life-cycle. Populations are thus inevitably isolated, and allopatric speciation and high regional diversity are inevitable; cosmopolitan distributions are considered to be unlikely or non-existent. Options for passive dispersion are discussed. Tanaidaceans appear to have first evolved in shallow waters, the region of greatest diversification of the Apseudomorpha and some tanaidomorph families, while in deeper waters the apseudomorphs have subsequently evolved two or three distinct phyletic lines. The Neotanaidomorpha has evolved separately and diversified globally in deep waters, and the Tanaidomorpha has undergone the greatest evolution, diversification and adaptation, to the point where some of the deep-water taxa are recolonizing shallow waters. Analysis of their geographic distribution shows some level of regional isolation, but suffers from inclusion of polyphyletic taxa and a general lack of data, particularly for deep waters. It is concluded that the diversity of the tanaidomorphs in deeper waters and in certain ocean regions remains to be discovered; that the smaller taxa are largely understudied; and that numerous cryptic species remain to be distinguished. Thus the number of species currently recognized is likely to be an order of magnitude too low, and globally the Tanaidacea potentially rival the Amphipoda and Isopoda in diversity.Magdalena Blazewicz-PaszkowyczRoger BamberGary AndersonPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 4, p e33068 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Magdalena Blazewicz-Paszkowycz Roger Bamber Gary Anderson Diversity of Tanaidacea (Crustacea: Peracarida) in the world's oceans--how far have we come?
description	Tanaidaceans are small peracarid crustaceans which occur in all marine habitats, over the full range of depths, and rarely into fresh waters. Yet they have no obligate dispersive phase in their life-cycle. Populations are thus inevitably isolated, and allopatric speciation and high regional diversity are inevitable; cosmopolitan distributions are considered to be unlikely or non-existent. Options for passive dispersion are discussed. Tanaidaceans appear to have first evolved in shallow waters, the region of greatest diversification of the Apseudomorpha and some tanaidomorph families, while in deeper waters the apseudomorphs have subsequently evolved two or three distinct phyletic lines. The Neotanaidomorpha has evolved separately and diversified globally in deep waters, and the Tanaidomorpha has undergone the greatest evolution, diversification and adaptation, to the point where some of the deep-water taxa are recolonizing shallow waters. Analysis of their geographic distribution shows some level of regional isolation, but suffers from inclusion of polyphyletic taxa and a general lack of data, particularly for deep waters. It is concluded that the diversity of the tanaidomorphs in deeper waters and in certain ocean regions remains to be discovered; that the smaller taxa are largely understudied; and that numerous cryptic species remain to be distinguished. Thus the number of species currently recognized is likely to be an order of magnitude too low, and globally the Tanaidacea potentially rival the Amphipoda and Isopoda in diversity.
format	article
author	Magdalena Blazewicz-Paszkowycz Roger Bamber Gary Anderson
author_facet	Magdalena Blazewicz-Paszkowycz Roger Bamber Gary Anderson
author_sort	Magdalena Blazewicz-Paszkowycz
title	Diversity of Tanaidacea (Crustacea: Peracarida) in the world's oceans--how far have we come?
title_short	Diversity of Tanaidacea (Crustacea: Peracarida) in the world's oceans--how far have we come?
title_full	Diversity of Tanaidacea (Crustacea: Peracarida) in the world's oceans--how far have we come?
title_fullStr	Diversity of Tanaidacea (Crustacea: Peracarida) in the world's oceans--how far have we come?
title_full_unstemmed	Diversity of Tanaidacea (Crustacea: Peracarida) in the world's oceans--how far have we come?
title_sort	diversity of tanaidacea (crustacea: peracarida) in the world's oceans--how far have we come?
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/3c4c510930c544e89b6e141bfaec94e6
work_keys_str_mv	AT magdalenablazewiczpaszkowycz diversityoftanaidaceacrustaceaperacaridaintheworldsoceanshowfarhavewecome AT rogerbamber diversityoftanaidaceacrustaceaperacaridaintheworldsoceanshowfarhavewecome AT garyanderson diversityoftanaidaceacrustaceaperacaridaintheworldsoceanshowfarhavewecome
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Diversity of Tanaidacea (Crustacea: Peracarida) in the world's oceans--how far have we come?

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