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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Towards a phylogenetic classification of Leptothecata (Cnidaria, Hydrozoa)

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Maronna, Maximiliano M. [1] ; Miranda, Thais P. [1] ; Cantero, Alvaro L. Pena [2] ; Barbeitos, Marcos S. [3] ; Marques, Antonio C. [4, 1]
Total Authors: 5
[1] Univ Sao Paulo, Inst Biociencias, Dept Zool, Rua Matao Trav 14, 101, BR-05508090 Sao Paulo - Brazil
[2] Univ Valencia, Dept Zool, Inst Cavanilles Biodiversidad & Biol Evolut, Valencia - Spain
[3] Univ Fed Parana, Dept Zool, BR-81531990 Curitiba, Parana - Brazil
[4] Univ Sao Paulo, Ctr Biol Marinha, Sao Sebastiao - Brazil
Total Affiliations: 4
Document type: Journal article
Source: SCIENTIFIC REPORTS; v. 6, JAN 29 2016.
Web of Science Citations: 31

Leptothecata are hydrozoans whose hydranths are covered by perisarc and gonophores and whose medusae bear gonads on their radial canals. They develop complex polypoid colonies and exhibit considerable morphological variation among species with respect to growth, defensive structures and mode of development. For instance, several lineages within this order have lost the medusa stage. Depending on the author, traditional taxonomy in hydrozoans may be either polyp-or medusa-oriented. Therefore, the absence of the latter stage in some lineages may lead to very different classification schemes. Molecular data have proved useful in elucidating this taxonomic challenge. We analyzed a super matrix of new and published rRNA gene sequences (16S, 18S and 28S), employing newly proposed methods to measure branch support and improve phylogenetic signal. Our analysis recovered new clades not recognized by traditional taxonomy and corroborated some recently proposed taxa. We offer a thorough taxonomic revision of the Leptothecata, erecting new orders, suborders, infraorders and families. We also discuss the origination and diversification dynamics of the group from a macroevolutionary perspective. (AU)

FAPESP's process: 11/50242-5 - Dimensions of marine life: patterns and process of diversifications in planktonic and benthic cnidarians
Grantee:Antonio Carlos Marques
Support type: BIOTA-FAPESP Program - Thematic Grants
FAPESP's process: 10/06927-0 - Biodiversity and areas of endemism of benthic hydroids (Cnidaria, Hydrozoa) from southern South America and Antarctica
Grantee:Thaís Pires Miranda
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 13/50484-4 - Biodiversity and distribution patterns of the Medusozoa form the South-Western Atlantic
Grantee:Antonio Carlos Marques
Support type: Regular Research Grants
FAPESP's process: 14/24407-5 - Benthic hydroids in sub Antarctic and Antarctic region endemism areas and their dispersion mechanisms influence on marine biogeographic patterns
Grantee:Thaís Pires Miranda
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 04/09961-4 - Biodiversity, evolution, endemism and conservation of the Medusozoa from the Southwestern Atlantic
Grantee:Antonio Carlos Marques
Support type: Research Projects - Thematic Grants