Genetic and morphological variation in an ecosystem engineer, Lithophyllum byssoides (Corallinales, Rhodophyta)

© 2016 Phycological Society of America.

Détails bibliographiques
Publié dans:Journal of phycology. - 1966. - 53(2017), 1 vom: 02. Feb., Seite 146-160
Auteur principal: Pezzolesi, Laura (Auteur)
Autres auteurs: Falace, Annalisa, Kaleb, Sara, Hernandez-Kantun, Jazmin J, Cerrano, Carlo, Rindi, Fabio
Format: Article en ligne
Langue:English
Publié: 2017
Accès à la collection:Journal of phycology
Sujets:Journal Article Research Support, Non-U.S. Gov't Mediterranean Sea conservation coralline algae cox2,3 haplotypes molecular phylogeny phylogeography psbA Algal Proteins
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520 |a Lithophyllum byssoides is a common coralline alga in the intertidal zone of Mediterranean coasts, where it produces biogenic concretions housing a high algal and invertebrate biodiversity. This species is an ecosystem engineer and is considered a target for conservation efforts, but designing effective conservation strategies currently is impossible due to lack of information about its population structure. The morphological and molecular variation of L. byssoides was investigated using morphoanatomy and DNA sequences (psbA and cox2,3) obtained from populations at 15 localities on the Italian and Croatian coasts. Lithophyllum byssoides exhibited a high number of haplotypes (31 psbA haplotypes and 24 cox2,3 haplotypes) in the central Mediterranean. The psbA and cox2,3 phylogenies were congruent and showed seven lineages. For most of these clades, the distribution was limited to one or a few localities, but one of them (clade 7) was widespread across the central Mediterranean, spanning the main biogeographic boundaries recognized in this area. The central Mediterranean populations formed a lineage separate from Atlantic samples; psbA pair-wise divergences suggested that recognition of Atlantic and Mediterranean L. byssoides as different species may be appropriate. The central Mediterranean haplotype patterns of L. byssoides were interpreted as resulting from past climatic events in the hydrogeological history of the Mediterranean Sea. The high haplotype diversity and the restricted spatial distribution of the seven lineages suggest that individual populations should be managed as independent units 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Mediterranean Sea 
650 4 |a conservation 
650 4 |a coralline algae 
650 4 |a cox2,3 
650 4 |a haplotypes 
650 4 |a molecular phylogeny 
650 4 |a phylogeography 
650 4 |a psbA 
650 7 |a Algal Proteins  |2 NLM 
700 1 |a Falace, Annalisa  |e verfasserin  |4 aut 
700 1 |a Kaleb, Sara  |e verfasserin  |4 aut 
700 1 |a Hernandez-Kantun, Jazmin J  |e verfasserin  |4 aut 
700 1 |a Cerrano, Carlo  |e verfasserin  |4 aut 
700 1 |a Rindi, Fabio  |e verfasserin  |4 aut 
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