Iterative evolution of sympatric seacow (Dugongidae, Sirenia) assemblages during the past ~26 million years.

Extant sirenians show allopatric distributions throughout most of their range. However, their fossil record shows evidence of multispecies communities throughout most of the past ∼26 million years, in different oceanic basins. Morphological differences among co-occurring sirenian taxa suggest that r...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jorge Velez-Juarbe, Daryl P Domning, Nicholas D Pyenson
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/57c35b2045ef4d0391aa1f0401799533
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:57c35b2045ef4d0391aa1f0401799533
record_format	dspace
spelling	oai:doaj.org-article:57c35b2045ef4d0391aa1f04017995332021-11-18T07:28:52ZIterative evolution of sympatric seacow (Dugongidae, Sirenia) assemblages during the past ~26 million years.1932-620310.1371/journal.pone.0031294https://doaj.org/article/57c35b2045ef4d0391aa1f04017995332012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/22319622/pdf/?tool=EBIhttps://doaj.org/toc/1932-6203Extant sirenians show allopatric distributions throughout most of their range. However, their fossil record shows evidence of multispecies communities throughout most of the past ∼26 million years, in different oceanic basins. Morphological differences among co-occurring sirenian taxa suggest that resource partitioning played a role in structuring these communities. We examined body size and ecomorphological differences (e.g., rostral deflection and tusk morphology) among sirenian assemblages from the late Oligocene of Florida, early Miocene of India and early Pliocene of Mexico; each with three species of the family Dugongidae. Although overlapping in several ecomorphological traits, each assemblage showed at least one dominant trait in which coexisting species differed. Fossil sirenian occurrences occasionally are monotypic, but the assemblages analyzed herein show iterative evolution of multispecies communities, a phenomenon unparalleled in extant sirenian ecology. As primary consumers of seagrasses, these communities likely had a strong impact on past seagrass ecology and diversity, although the sparse fossil record of seagrasses limits direct comparisons. Nonetheless, our results provide robust support for previous suggestions that some sirenians in these extinct assemblages served as keystone species, controlling the dominance of climax seagrass species, permitting more taxonomically diverse seagrass beds (and sirenian communities) than many of those observed today.Jorge Velez-JuarbeDaryl P DomningNicholas D PyensonPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 2, p e31294 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jorge Velez-Juarbe Daryl P Domning Nicholas D Pyenson Iterative evolution of sympatric seacow (Dugongidae, Sirenia) assemblages during the past ~26 million years.
description	Extant sirenians show allopatric distributions throughout most of their range. However, their fossil record shows evidence of multispecies communities throughout most of the past ∼26 million years, in different oceanic basins. Morphological differences among co-occurring sirenian taxa suggest that resource partitioning played a role in structuring these communities. We examined body size and ecomorphological differences (e.g., rostral deflection and tusk morphology) among sirenian assemblages from the late Oligocene of Florida, early Miocene of India and early Pliocene of Mexico; each with three species of the family Dugongidae. Although overlapping in several ecomorphological traits, each assemblage showed at least one dominant trait in which coexisting species differed. Fossil sirenian occurrences occasionally are monotypic, but the assemblages analyzed herein show iterative evolution of multispecies communities, a phenomenon unparalleled in extant sirenian ecology. As primary consumers of seagrasses, these communities likely had a strong impact on past seagrass ecology and diversity, although the sparse fossil record of seagrasses limits direct comparisons. Nonetheless, our results provide robust support for previous suggestions that some sirenians in these extinct assemblages served as keystone species, controlling the dominance of climax seagrass species, permitting more taxonomically diverse seagrass beds (and sirenian communities) than many of those observed today.
format	article
author	Jorge Velez-Juarbe Daryl P Domning Nicholas D Pyenson
author_facet	Jorge Velez-Juarbe Daryl P Domning Nicholas D Pyenson
author_sort	Jorge Velez-Juarbe
title	Iterative evolution of sympatric seacow (Dugongidae, Sirenia) assemblages during the past ~26 million years.
title_short	Iterative evolution of sympatric seacow (Dugongidae, Sirenia) assemblages during the past ~26 million years.
title_full	Iterative evolution of sympatric seacow (Dugongidae, Sirenia) assemblages during the past ~26 million years.
title_fullStr	Iterative evolution of sympatric seacow (Dugongidae, Sirenia) assemblages during the past ~26 million years.
title_full_unstemmed	Iterative evolution of sympatric seacow (Dugongidae, Sirenia) assemblages during the past ~26 million years.
title_sort	iterative evolution of sympatric seacow (dugongidae, sirenia) assemblages during the past ~26 million years.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/57c35b2045ef4d0391aa1f0401799533
work_keys_str_mv	AT jorgevelezjuarbe iterativeevolutionofsympatricseacowdugongidaesireniaassemblagesduringthepast26millionyears AT darylpdomning iterativeevolutionofsympatricseacowdugongidaesireniaassemblagesduringthepast26millionyears AT nicholasdpyenson iterativeevolutionofsympatricseacowdugongidaesireniaassemblagesduringthepast26millionyears
_version_	1718423408770809856

Iterative evolution of sympatric seacow (Dugongidae, Sirenia) assemblages during the past ~26 million years.

Ejemplares similares