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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.)

When morphometry meets taxonomy: morphological variation and species boundaries in Proboscoida (Cnidaria: Hydrozoa)

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Author(s):
Cunha, Amanda F. [1] ; Collins, Allen G. [2] ; Marques, Antonio C. [1]
Total Authors: 3
Affiliation:
[1] Univ Sao Paulo, Dept Zool, Inst Biociencias, Rua Matao, Travessa 14, 101, BR-05508090 Sao Paulo - Brazil
[2] Smithsonian Inst, Natl Systemat Lab, Natl Marine Fisheries Serv NMFS, Natl Museum Nat Hist, Washington, DC 20560 - USA
Total Affiliations: 2
Document type: Journal article
Source: ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY; v. 190, n. 2, p. 417-447, OCT 2020.
Web of Science Citations: 2
Abstract

Species delimitation in marine taxa is often problematic given large intraspecific variation. Based on extensive, recently published genetic sampling from specimens of the hydrozoan families Campanulariidae, Clytiidae and Obeliidae, we evaluate morphological variation in this group, correlating morphometric and phylogenetic patterns for species delimitation. Several species of Campanulariidae are confidently delimited based on differences in size (e.g. Bonneviella species, Tulpa tulipifera and Rhizocaulus verticillatus), while others are re-identified and corroborated based on differences in perisarc thickness (e.g. Silicularia rosea, Orthopyxis and Campanularia species). In Clytiidae, the length and diameter of hydrothecae, height of hydrothecal cusps and perisarc thickness delimit the species Clytia linearis, C. elsaeoswaldae and C. noliformis from others. However, few characters reliably differentiate the clades associated with the nominal species C. gracilis and C. hemisphaerica. In Obeliidae, Obelia geniculata is distinctive in its higher perisarc thickness, and corroborated as a widely distributed species. Obelia longissima and clades refered to O. dichotoma are subtly distinguished, showing a few differences in size and branching of colonies. The taxonomic implications of these results are discussed. With a few exceptions, species can be delimited based on morphometric patterns, once morphological variation is compared. (AU)

FAPESP's process: 11/22260-9 - Morphological variation and its phylogenetic signal in marine colonial organisms: a study with the family Campanulariidae (Cnidaria, Hydrozoa)
Grantee:Amanda Ferreira e Cunha
Support type: Scholarships in Brazil - 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
FAPESP's process: 17/00641-7 - Morphological variability within the evolutionary context of colonial hydrozoans (Cnidaria, Proboscoida)
Grantee:Amanda Ferreira e Cunha
Support type: Scholarships in Brazil - Post-Doctorate
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: 13/25874-3 - Morphological variability and its phylogenetic signal in marine colonial organisms: a case study with the family Campanulariidae (Cnidaria, Hydrozoa)
Grantee:Amanda Ferreira e Cunha
Support type: Scholarships abroad - Research Internship - 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: 18/24781-5 - Understanding the role of genes and the environment in determining phenotypic variation in the genus Orthopyxis (Cnidaria, Hydrozoa) from the southwestern Atlantic Ocean
Grantee:Amanda Ferreira e Cunha
Support type: Scholarships abroad - Research Internship - Post-doctor