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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.)

Internal Anatomy of Haliclystus antarcticus (Cnidaria, Staurozoa) with a Discussion on Histological Features Used in Staurozoan Taxonomy

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Miranda, Lucilia S. [1] ; Collins, Allen G. [2] ; Marques, Antonio C. [1]
Total Authors: 3
[1] Univ Sao Paulo, Inst Biociencias, Dept Zool, BR-05508090 Sao Paulo - Brazil
[2] Smithsonian Inst, Natl Systemat Lab, Natl Marine Fisheries Serv, Natl Museum Nat Hist, Washington, DC 20560 - USA
Total Affiliations: 2
Document type: Journal article
Source: Journal of Morphology; v. 274, n. 12, p. 1365-1383, DEC 2013.
Web of Science Citations: 13

Stauromedusae have relatively few macromorphological characters, making both their taxonomy and identification difficult. For this reason, histological characters are also employed in the taxonomy of the group. This study presents a detailed description of the histomorphology of Haliclystus antarcticus Pfeffer, 1889 (Cnidaria, Staurozoa). We make new observations for the species and for the class, and address functional, taxonomical, and evolutionary aspects of staurozoan histo-anatomy. A complete reconstruction of H. antarcticus body plan is used to guide a more detailed observation, based on light microscopy, of structures rarely cited in the literature, such as the intertentacular lobules, the ostia between adjacent perradial pockets, and the male and female gonadal vesicles. Two possible regions of nematocyst formation are hypothesized and discussed. We also provide a review of the current use of histological characters in the taxonomy of the group. Understanding the body plan of stauromedusae is a challenge, because each single individual presents characters found in medusae and in polyps of other medusozoans. Comprehensive histological descriptions are important to establish relations of homology within Staurozoa and Cnidaria, providing crucial data on their evolution. J. Morphol. 274:1365-1383, 2013. (c) 2013 Wiley Periodicals, Inc. (AU)

FAPESP's process: 10/07362-7 - Evolution in Staurozoa: molecular, morphological, cnidome and developmental subsidies
Grantee:Lucília Souza Miranda
Support type: Scholarships in Brazil - 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: 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