Abstract Detail



Systematics

Motta, Carina [1], Guilliams, C. Matt [2], Ferren, Wayne [3], Mazer, Susan [4], Lehman, Kristen [2], Seltmann, Katja [1].

A phylogenetic analysis of a putative species radiation in the genus Suaeda (Chenopodiaceae) from the estuaries of northwestern Mexico.

Nearly 100 estuaries exist along the coast of Baja California and Sonora, Mexico, forming a series of unique wetland habitats isolated from each other by the surrounding arid landscape. The genus Suaeda Forssk. ex J.F. Gmel. (Chenopodiaceae) is common in these estuaries and appears to be in the process of diversification. Nine putative new species of Suaeda were detected by Wayne Ferren during fieldwork in this region in the 1980s, but additional taxonomic study was needed to before describing these as new to science. Nearly 350 specimens of both known and putative species of Suaeda were collected by Ferren from 1980-2000 and housed at the UCSB Natural History Museum at the Cheadle Center for Biodiversity and Ecological Restoration (CCBER) for curation and research. To evaluate Ferren’s hypotheses, DNA was extracted from four exemplars of each putative species, along with four outgroup species, and sequenced using high-throughput ddRADseq. The resulting data were then analyzed in pyRAD to infer a phylogeny. We compared the results of these genetic analyses against Ferren’s taxonomic hypotheses and examine how these populations or species are phylogenetically related. Beyond the implications for taxonomy, we expect that these analyses will also demonstrate the unique biodiversity of these Mexican wetlands and their importance for conservation.


1 - University of California, Santa Barbara, The Cheadle Center for Biodiversity and Ecological Restoration, Harder South Building 578, Santa Barbara, CA, 93106, US
2 - Santa Barbara Botanic Garden, 1212 Mission Canyon Road, Santa Barbara, CA, 93105, United States
3 - Channel Islands Restoration, 928 Carpinteria Street, Suite 3, Santa Barbara, CA, 93103, US
4 - University Of California, Santa Barbara, Department Of Ecology & Marine Biology, 4119 Life Sciences Building, Santa Barbara, CA, 93106, United States

Keywords:
Next generation sequencing
herbarium
phylogeny
Suaeda.

Presentation Type: Oral Paper
Number:
Abstract ID:190
Candidate for Awards:None


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