Morphological and molecular evidence demonstrates the amphi-Atlantic distribution of Laurencia catarinensis (Ceramiales, Rhodophyta)

Autor(es)

Machin-Sanchez, Maria ^[1] ; Cassano, Valeria ^[2] ; Diaz-Larrea, Jhoana ^[3] ; Senties, Abel ^[3] ; Fujii, Mutue T. ^[4] ; Candelaria Gil-Rodriguez, Maria ^[1]

Afiliação do(s) autor(es)

^[1] Univ La Laguna, Dept Biol Vegetal Bot, San Cristobal la Laguna 38071, Santa Cruz De T - Spain

^[2] Univ Sao Paulo, Inst Biociencias, Dept Bot, BR-05508900 Sao Paulo - Brazil

^[3] Univ Autonoma Metropolitana Iztapalapa, Dept Hidrobiol, Mexico City 09340, DF - Mexico

^[4] Inst Bot, BR-04301012 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Botanica Marina; v. 55, n. 3, p. 241-252, JUN 2012.
• Citações Web of Science: 10

Resumo

We performed morphological and molecular studies of Laurencia catarinensis from the Canary Islands. This species has an entangled habit, cushion-like tuft formation, cortical cell walls, slightly to markedly projecting near the apex, and lacking lenticular thickenings in medullary cells. We inferred its phylogenetic position by analyzing the chloroplast-encoded rbcL gene sequences from 41 samples. The results demonstrate that specimens of L. catarinensis from the Canary Islands, where it is referred to as L. intricata, and those from Brazil (including specimens from the type locality in Santa Catarina) form a monophyletic clade with low genetic divergence (0-0.9%). In contrast, specimens of L. intricata from the type locality in Cuba, Mexico, and the USA were clearly distinct from L. catarinensis collected in Brazil and the Canary Islands, as shown by high genetic divergence values (4.9-5.7%). The type material of L. catarinensis from Brazil allowed us to identify all samples from the Canarian Archipelago as L. catarinensis. These findings expand the known geographical distribution of L. catarinensis to the eastern Atlantic Ocean and demonstrate an amphi-Atlantic distribution of the species. (AU)

• Processo FAPESP: 10/52244-2 - Diversidades e relações filogenéticas de algas marinhas bentônicas: o complexo Laurencia (Rhodophyta) no Atlântico Tropical e Subtropical
• Beneficiário: Valéria Cassano
• Modalidade de apoio: Auxílio à Pesquisa - Regular