Pterocladiella (Gelidiales, Rhodophyta) species of Brazil including morphological studies of Pterocladiella media and a reassessment of Pterocladiella taylorii

Iha, Cíntia; Jamas, Mayra; Guimarães, Sílvia M. P. B.; Fujii, Mutuê T.; Freshwater, D. Wilson; Oliveira, Mariana C.

doi:10.2216/17-8.1

Cited by 13 publications

(15 citation statements)

References 23 publications

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“…Some species serve communities as nurseries for intertidal invertebrates, host diverse microbial communities, and provide food for marine grazers such as green turtles, fishes, gastropods, and sea urchins ( Felicini and Perrone, 1994 ; Ibrahim et al, 2015 ; Campos and Cardona, 2020 ; Patarra et al, 2020 ). Although the genus, like most red algae, has a triphasic life cycle comprising tetrasporophytes, sexual gametophytes, and carposporophytes, male and female plants are rarely found in most species ( Boo et al, 2010 , 2017 ; Iha et al, 2017 ; Patarra et al, 2020 ). Thus, reproduction likely depends on asexual, non-motile tetraspores or the regeneration of vegetative fragments or holdfasts, and the capacity of regeneration may help proliferate during sporadic dispersal events.…”

Section: Introductionmentioning

confidence: 99%

Ancient Tethyan Vicariance and Long-Distance Dispersal Drive Global Diversification and Cryptic Speciation in the Red Seaweed Pterocladiella

et al. 2022

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We investigated the globally distributed red algal genus Pterocladiella, comprising 24 described species, many of which are economically important sources of agar and agarose. We used DNA-based species delimitation approaches, phylogenetic, and historical biogeographical analyses to uncover cryptic diversity and infer the drivers of biogeographic patterns. We delimited 43 species in Pterocladiella, of which 19 are undescribed. Our multigene time-calibrated phylogeny and ancestral area reconstruction indicated that Pterocladiella most likely originated during the Early Cretaceous in the Tethys Sea. Ancient Tethyan vicariance and long-distance dispersal have shaped current distribution patterns. The ancestor of Eastern Pacific species likely arose before the formation of the formidable Eastern Pacific Barrier—a first confirmation using molecular data in red algae. Divergences of Northeast and Southeast Pacific species have been driven by the Central American Seaway barrier, which, paradoxically, served as a dispersal pathway for Atlantic species. Both long- and short-distance dispersal scenarios are supported by genetic relationships within cosmopolitan species based on haplotype analysis. Asymmetrical distributions and the predominance of peripatry and sympatry between sister species suggest the importance of budding speciation in Pterocladiella. Our study highlights the underestimation of global diversity in these crucial components of coastal ecosystems and provides evidence for the complex evolution of current species distributions.

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Section: Introductionmentioning

confidence: 99%

Ancient Tethyan Vicariance and Long-Distance Dispersal Drive Global Diversification and Cryptic Speciation in the Red Seaweed Pterocladiella

et al. 2022

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“…The genus currently includes 24 species (Guiry and Guiry, 2021) distributed in tropical, subtropical, and temperate regions. Molecular studies carried out since 1997 supported the monophyly of Pterocladiella (Bailey and Freshwater, 1997;Freshwater and Bailey, 1998;Iha et al, 2017). Seven species of Pterocladiella are recorded for the tropical and subtropical Western Atlantic, based on morphological or molecular studies (Wynne, 2017).…”

Section: Ceramialesmentioning

confidence: 95%

“…Its characteristic transversal sections through both terete and flattened portions of branches show numerous rhizines among the central medullary cells. Its small size and its thinner branches are some of the characters that may distinguish this taxon from other Pterocladiella species (Thomas and Freshwater, 2001;Iha et al, 2017).…”

Section: Ceramialesmentioning

confidence: 98%

“…Seven species of Pterocladiella are recorded for the tropical and subtropical Western Atlantic, based on morphological or molecular studies (Wynne, 2017). Pterocladiella bartlettii has been recorded for the tropical and subtropical western Atlantic, but it has recently been observed also in Southeast Asia from Malaysia and Singapore, and is the most common Pterocladiella species in Brazil (Iha et al, 2017). Its characteristic transversal sections through both terete and flattened portions of branches show numerous rhizines among the central medullary cells.…”

Section: Ceramialesmentioning

confidence: 99%

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Notas sobre las algas marinas de la Reserva Internacional de la Biosfera Seaflower, Caribe Colombiano VIII: nuevos registros de algas rojas (Rhodophyta) de San Andrés, Providencia y Santa Catalina, Colombia

2021

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Background and Aims: During the past decade, phycological research in the Seaflower International Biosphere Reserve has revealed a much more diverse marine flora than historically appreciated. This work aims to contribute to the knowledge of macroalgal biodiversity in the Archipelago of San Andres, Old Providence and Saint Cataline, Colombian Caribbean, adding 11 new records of red algae. Methods: The samples were collected around the islands in ten points covering different ecosystems, by SCUBA diving at depths between 0 and 37 m. Sampling was carried out between August and November 2009, December 2012, and September 2019 during the Seaflower Scientific Expedition. The algae collected were preserved in a 4% formalin/seawater solution. The identification was carried out using an optical microscope and specialized literature. All specimens were deposited in the herbarium JIW of the Biology Department of the Universidad Nacional de Colombia, Bogotá, Colombia. Key results: Eleven species of red macroalgae are newly reported for the Seaflower International Biosphere Reserve in the Caribbean Sea. Of these taxa, six have been previously reported for the Colombian Caribbean: Botryocladia spinulifera, Champia taironensis, Dasya caraibica, Pterocladiella bartlettii, Seirospora occidentalis, Spyridia aculeata subsp. complanata. The remaining five species are new records for the country: Botryocladia cf. bahamensis, Botryocladia cf. bermudana, Ceramium brevizonatum var. caraibicum Gloioderma iyoense and Wrightiella tumanowiczii. With these results the International Biosphere Reserve Seaflower hosts 153 species of Rhodophyta, belonging to 12 orders, 27 families and 73 genera. Conclusions: With the research carried out in the last 10 years, the number of registered taxa has increased from 202 to 325, which represents a 62% increase in the knowledge of macroalgae diversity and places the Archipelago in the second most diverse region in the Colombian Caribbean.

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“…In the last decade, surveys on red algae biodiversity of southeastern and southern Brazil have revealed new records not only for Brazil, but also for the Atlantic Ocean, as well as new species for science (Horta 2000;Guimarães et al 2004;Amado-Filho et al 2006;Rocha-Jorge et al 2012, 2013Nauer et al 2014Nauer et al , 2015Nauer et al , 2016Iha et al 2015Iha et al , 2017Bustamante et al 2017;Jamas et al 2017;Kano et al 2017). According to floristic surveys, four species of Chondracanthus Kützing are reported for Brazil: C. acicularis (Roth) Fredericq, C. elegans (Greville) Guiry, C. saundersii C.W.Schneider and C.E.Lane and C. teedei (Mertens ex Roth) Fredericq.…”

Section: Introductionmentioning

confidence: 99%

Diversity of Chondracanthus (Gigartinaceae, Rhodophyta) on the Brazilian coast based on molecular and morphological evidences

et al. 2018

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Based on morphological studies, four species of Chondracanthus Kützing were previously reported on the Brazilian coast: C. acicularis (Roth) Fredericq, C. elegans (Greville) Guiry, C. saundersii C.W.Schneider and C.E.Lane and C. teedei (Mertens ex Roth) Fredericq. In the present study, specimens of Chondracanthus were collected from intertidal and subtidal zones (up to 18 m depth); morphological, molecular and phylogenetic analyses were performed using DNA barcoding (cox1) as a tool in a survey of Rhodophyta biodiversity in São Paulo state. Unlike what we expected, C. saundersii is widely distributed, and many specimens were misidentified as C. acicularis or C. teedei before this study, suggesting the necessity of an accurate revision in the previous identifications of the species of Chondracanthus in Brazil. Tetrasporangial and cystocarpic structures of C. saundersii are described for the first time. Our results confirm that the utilization of cox1 sequences as DNA barcode is an efficient tool to complement morphological identification for species of the genus Chondracanthus. Keywords cox1 Á Phylogeny Á rbcL Á Taxonomy Abbreviations cox1 Cytochrome c oxidase GTR General-time-reversible model invariable sites and shape parameter of the gamma distribution MP Maximum parsimony NJ Neighbor-joining PP Posterior probability rbcL Gene coding for the large subunit of RUBISCO Electronic supplementary material The online version of this article (

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Pterocladiella (Gelidiales, Rhodophyta) species of Brazil including morphological studies of Pterocladiella media and a reassessment of Pterocladiella taylorii

Cited by 13 publications

References 23 publications

Ancient Tethyan Vicariance and Long-Distance Dispersal Drive Global Diversification and Cryptic Speciation in the Red Seaweed Pterocladiella

Ancient Tethyan Vicariance and Long-Distance Dispersal Drive Global Diversification and Cryptic Speciation in the Red Seaweed Pterocladiella

Notas sobre las algas marinas de la Reserva Internacional de la Biosfera Seaflower, Caribe Colombiano VIII: nuevos registros de algas rojas (Rhodophyta) de San Andrés, Providencia y Santa Catalina, Colombia

Diversity of Chondracanthus (Gigartinaceae, Rhodophyta) on the Brazilian coast based on molecular and morphological evidences

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