Delimitating cryptic species in the Gracilaria domingensis complex (Gracilariaceae, Rhodophyta) using molecular and morphological data

© 2016 Phycological Society of America.

Bibliographische Detailangaben
Veröffentlicht in:Journal of phycology. - 1966. - 52(2016), 6 vom: 02. Dez., Seite 997-1017
1. Verfasser: Lyra, Goia de M (VerfasserIn)
Weitere Verfasser: Gurgel, C Frederico D, Costa, Emmanuelle da S, de Jesus, Priscila B, Oliveira, Mariana C, Oliveira, Eurico C, Davis, Charles C, Nunes, José Marcos de Castro
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2016
Zugriff auf das übergeordnete Werk:Journal of phycology
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Gracilaria Gracilariales Rhodophyta rbcL systematics taxonomy Algal Proteins DNA, Algal RNA, Ribosomal, 23S
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520 |a Species in the genus Gracilaria that display conspicuously flattened vegetative morphologies are a taxonomically challenging group of marine benthic red algae. This is a result of their species richness, morphological similarity, and broad phenotypic plasticity. Within this group, the Gracilaria domingensis complex is one of the most common, conspicuous, and morphologically variable species along the tropical western Atlantic Ocean. Previous research has identified that members of this complex belong to two distantly related clades. However, despite this increased phylogentic resolution, species delimitations within each of these clades remain unclear. Our study assessed the species diversity within this difficult complex using morphological and molecular data from three genetic markers (cox1, UPA, and rbcL). We additionally applied six single-marker species delimitation methods (SDM: ABGD, GMYCs, GMYCm, SPN, bPTP, and PTP) to rbcL, which were largely in agreement regarding species delimitation. These results, combined with our analysis of morphology, indicate that the G. domingensis complex includes seven distinct species, each of which are not all most closely related: G. cervicornis; a ressurected G. ferox; G. apiculata subsp. apiculata; a new species, Gracilaria baiana sp. nov.; G. intermedia subsp. intermedia; G. venezuelensis; and G. domingensis sensu stricto, which includes the later heterotypic synonym, G. yoneshigueana. Our study demonstrates the value of multipronged strategies, including the use of both molecular and morphological approaches, to decipher cryptic species of red algae 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 4 |a Gracilaria 
650 4 |a Gracilariales 
650 4 |a Rhodophyta 
650 4 |a rbcL 
650 4 |a systematics 
650 4 |a taxonomy 
650 7 |a Algal Proteins  |2 NLM 
650 7 |a DNA, Algal  |2 NLM 
650 7 |a RNA, Ribosomal, 23S  |2 NLM 
700 1 |a Gurgel, C Frederico D  |e verfasserin  |4 aut 
700 1 |a Costa, Emmanuelle da S  |e verfasserin  |4 aut 
700 1 |a de Jesus, Priscila B  |e verfasserin  |4 aut 
700 1 |a Oliveira, Mariana C  |e verfasserin  |4 aut 
700 1 |a Oliveira, Eurico C  |e verfasserin  |4 aut 
700 1 |a Davis, Charles C  |e verfasserin  |4 aut 
700 1 |a Nunes, José Marcos de Castro  |e verfasserin  |4 aut 
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773 1 8 |g volume:52  |g year:2016  |g number:6  |g day:02  |g month:12  |g pages:997-1017 
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