Cargando…

The Caribbean intertidal mite Alismobates inexpectatus (Acari, Oribatida), an unexpected case of cryptic diversity?

Molecular genetic analyses of Caribbean populations of the supposedly widespread intertidal oribatid mite Alismobates inexpectatus revealed the existence of a cryptic species. The new species, Alismobates piratus sp. n., shows considerable COI and 18S rRNA gene sequence divergences and although morp...

Descripción completa

Detalles Bibliográficos
Autores principales: Pfingstl, Tobias, Bardel-Kahr, Iris, Schäffer, Sylvia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Berlin Heidelberg 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10689554/
https://www.ncbi.nlm.nih.gov/pubmed/38046836
http://dx.doi.org/10.1007/s13127-023-00624-9
_version_ 1785152391859929088
author Pfingstl, Tobias
Bardel-Kahr, Iris
Schäffer, Sylvia
author_facet Pfingstl, Tobias
Bardel-Kahr, Iris
Schäffer, Sylvia
author_sort Pfingstl, Tobias
collection PubMed
description Molecular genetic analyses of Caribbean populations of the supposedly widespread intertidal oribatid mite Alismobates inexpectatus revealed the existence of a cryptic species. The new species, Alismobates piratus sp. n., shows considerable COI and 18S rRNA gene sequence divergences and although morphometric analyses indicate considerable variation between the taxa, no distinguishing morphological feature could be detected. The extreme intertidal environment is suggested to be responsible for the observed morphological stasis of the two species and vicariance is supposed to be responsible for their speciation. Alismobates piratus sp. n. was found on Hispaniola, Guadeloupe, Barbados and Curaçao indicating a predominant distribution on the Greater and Lesser Antilles, whereas the occurrence of A. inexpectatus is primarily restricted to Central America, the northern Caribbean and the Greater Antilles. Haplotype network analyses indicate distinct geographic structuring and the absence of recent gene flow among the Antillean A. piratus sp. n. populations. Central American and Antillean populations of A. inexpectatus show similar patterns but populations from Bermuda and the Bahamas are characterized by a common origin and subsequent expansion. Genetic landscape analysis demonstrates that vast stretches of open ocean, like the Caribbean Basin and the Western Atlantic, act as rather effective barriers, whereas the continuous continental coastline of Central and North America may facilitate dispersal. Genetic data also indicates that the Gulf Stream plays an important role for the biogeography of intertidal oribatid mites as it may be responsible for the strong link between Central and North American populations as well as for the colonization of Bermuda. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s13127-023-00624-9.
format Online
Article
Text
id pubmed-10689554
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher Springer Berlin Heidelberg
record_format MEDLINE/PubMed
spelling pubmed-106895542023-12-02 The Caribbean intertidal mite Alismobates inexpectatus (Acari, Oribatida), an unexpected case of cryptic diversity? Pfingstl, Tobias Bardel-Kahr, Iris Schäffer, Sylvia Org Divers Evol Original Article Molecular genetic analyses of Caribbean populations of the supposedly widespread intertidal oribatid mite Alismobates inexpectatus revealed the existence of a cryptic species. The new species, Alismobates piratus sp. n., shows considerable COI and 18S rRNA gene sequence divergences and although morphometric analyses indicate considerable variation between the taxa, no distinguishing morphological feature could be detected. The extreme intertidal environment is suggested to be responsible for the observed morphological stasis of the two species and vicariance is supposed to be responsible for their speciation. Alismobates piratus sp. n. was found on Hispaniola, Guadeloupe, Barbados and Curaçao indicating a predominant distribution on the Greater and Lesser Antilles, whereas the occurrence of A. inexpectatus is primarily restricted to Central America, the northern Caribbean and the Greater Antilles. Haplotype network analyses indicate distinct geographic structuring and the absence of recent gene flow among the Antillean A. piratus sp. n. populations. Central American and Antillean populations of A. inexpectatus show similar patterns but populations from Bermuda and the Bahamas are characterized by a common origin and subsequent expansion. Genetic landscape analysis demonstrates that vast stretches of open ocean, like the Caribbean Basin and the Western Atlantic, act as rather effective barriers, whereas the continuous continental coastline of Central and North America may facilitate dispersal. Genetic data also indicates that the Gulf Stream plays an important role for the biogeography of intertidal oribatid mites as it may be responsible for the strong link between Central and North American populations as well as for the colonization of Bermuda. SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s13127-023-00624-9. Springer Berlin Heidelberg 2023-09-29 2023 /pmc/articles/PMC10689554/ /pubmed/38046836 http://dx.doi.org/10.1007/s13127-023-00624-9 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Original Article
Pfingstl, Tobias
Bardel-Kahr, Iris
Schäffer, Sylvia
The Caribbean intertidal mite Alismobates inexpectatus (Acari, Oribatida), an unexpected case of cryptic diversity?
title The Caribbean intertidal mite Alismobates inexpectatus (Acari, Oribatida), an unexpected case of cryptic diversity?
title_full The Caribbean intertidal mite Alismobates inexpectatus (Acari, Oribatida), an unexpected case of cryptic diversity?
title_fullStr The Caribbean intertidal mite Alismobates inexpectatus (Acari, Oribatida), an unexpected case of cryptic diversity?
title_full_unstemmed The Caribbean intertidal mite Alismobates inexpectatus (Acari, Oribatida), an unexpected case of cryptic diversity?
title_short The Caribbean intertidal mite Alismobates inexpectatus (Acari, Oribatida), an unexpected case of cryptic diversity?
title_sort caribbean intertidal mite alismobates inexpectatus (acari, oribatida), an unexpected case of cryptic diversity?
topic Original Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10689554/
https://www.ncbi.nlm.nih.gov/pubmed/38046836
http://dx.doi.org/10.1007/s13127-023-00624-9
work_keys_str_mv AT pfingstltobias thecaribbeanintertidalmitealismobatesinexpectatusacarioribatidaanunexpectedcaseofcrypticdiversity
AT bardelkahriris thecaribbeanintertidalmitealismobatesinexpectatusacarioribatidaanunexpectedcaseofcrypticdiversity
AT schaffersylvia thecaribbeanintertidalmitealismobatesinexpectatusacarioribatidaanunexpectedcaseofcrypticdiversity
AT pfingstltobias caribbeanintertidalmitealismobatesinexpectatusacarioribatidaanunexpectedcaseofcrypticdiversity
AT bardelkahriris caribbeanintertidalmitealismobatesinexpectatusacarioribatidaanunexpectedcaseofcrypticdiversity
AT schaffersylvia caribbeanintertidalmitealismobatesinexpectatusacarioribatidaanunexpectedcaseofcrypticdiversity