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Abstract Detail

Phycological Section

Krayesky, David [1], Mator, Amanda [1], Norris, James [2], Brown, Allison [1], Betler, Lisa [1], Fredericq, Suzanne [3].

New insights into the diversity of Peyssonnelia (Rhodophyta) in the Caribbean.

Currently, the systematics of the genera within the order Peysonneliales of the Florideophyceae (Rhodophyta) is not well understood. The Peysonneliales, represents a group of non-calcified crustose red algae, found in intertidal, subtidal and deepwater localities. Many of the genera in what is currently defined as the Peysonneliales have been placed into synonymy with Peyssonnelia. Molecular data has shown that there are many cryptic groups within this red algal order, and that Peyssonnelia now has a restricted distribution (Eastern Atlantic and Indian Ocean). The before mentioned molecular data suggests that Peyssonnelia is not a cosmopolitan group as previously thought and species of Peyssonnelia reported to occur in the Western Atlantic such as P. simulans may belong to another genus. In this study, both sequence (rbcL and LSU) and anatomical data, were utilized to determine the correct phylogenetic placement of P. simulans. The confirmed geographic distribution of P. simulans is Western Atlantic and Indian Ocean. In this study, we demonstrate that P. simulans is a valid species of the Peysonneliales, but belongs to a genus that is new to science.

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1 - Slippery Rock University, Biology, 1 Morrow Way, Slippery Rock, PA, 16057, USA
2 - Smithsonian, Botany, Washington, DC, 20013-7012, USA
3 - University of Louisiana at Lafayette, Biology, Lafayette, LA, 70504, USA


Presentation Type: Poster:Posters for Sections
Session: P
Location: Grand Salon A - D/Riverside Hilton
Date: Monday, July 29th, 2013
Time: 5:30 PM
Number: PPC001
Abstract ID:301
Candidate for Awards:None

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