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Identification of coronate scyphozoans (Cnidaria: Scyphozoa: Coronatae) From the Brazilian coast

Grant number: 14/09602-6
Support type:Scholarships in Brazil - Scientific Initiation
Effective date (Start): October 01, 2014
Effective date (End): July 31, 2015
Field of knowledge:Biological Sciences - Zoology - Taxonomy of Recent Groups
Principal Investigator:André Carrara Morandini
Grantee:Clarissa Garbi Molinari
Home Institution: Instituto de Biociências (IB). Universidade de São Paulo (USP). São Paulo , SP, Brazil

Abstract

The coronates, members of the order Coronatae, are considered the most basal group of Scyphozoa, containing almost 60 species. To unravel the systematics of the order is imperative the observation of the life cycle of each species, considering both polyp and medusa stages. However, recent studies focusing only at the polyp stage were able to promote advances in identification using only morphological characters of the periderm tube. The knowledge of the real number of species along the Brazilian coast and their distribution limits advanced approaches to interpret the biogeography of the group. In this way, this project aims to identify and describe polyp species of Coronatae present in samples to be analyzed taking into account the bathymetric and longitudinal distributions. The animals will be studied by measurements of the periderm tube under light microscopy and the arrangement and morphology of the internal periderm cusps under scanning electronic microscopy. (AU)