Homologous points are suitable to identify fish assemblages in subtropical ecosystems? A case study for Araçá Bay

• Grant number: 14/20323-1
• Support Opportunities: Scholarships in Brazil - Doctorate
• Start date: December 01, 2014
• End date: May 14, 2018
• Field of knowledge: Physical Sciences and Mathematics - Oceanography - Biological Oceanography
• Agreement: Coordination of Improvement of Higher Education Personnel (CAPES)
• Principal Investigator: Carmen Lúcia Del Bianco Rossi Wongtschowski
• Grantee: Carolina Correia Siliprandi
• Host Institution: Instituto Oceanográfico (IO). Universidade de São Paulo (USP). São Paulo , SP, Brazil
• Associated research grant: 11/50317-5 - Biodiversity and functioning of a subtropical coastal ecosystem: a contribution to integrated management, AP.BTA.TEM
• Associated scholarship(s): 14/26417-8 - Homologous points are suitable to identify fish assemblages in subtropical ecosystems? A case study for Araçá Bay, BE.EP.DR

Abstract

Morphological characters are essential to analyze fishes assemblages structures. The ecological morphology considers the interaction between organisms endogenous factors and the environmental characteristics where they live. Its identify differences ecological and adaptive strategies. The morfospaces techniques analyze the structure of a fish assemblage through the values of the intervals between homologous points (or landmarks), positioned in structures of different organisms phylogenetically related. These intervals are quantified by geometric morphometrics and multivariate analyzes. The technique has been used to measure the variability of biodiversity in time and space. Morphogeometrics indices characterize the general shape of the body, head, eyes, mouth, and the position and length of the fins, providing an assemblages structure photography and inferences about the ecological and evolutionary structural processes. Besides, it allows to detect ecological and/or anthropogenic disturbance, through the reduction of morphological variability according to the configuration of morphoespaces. Morphogeometrics indexes and contour analysis in sagittae otoliths also allow the evaluation of the fish assemblages diversity in different time scales, reflecting environmental, phylogenetic and functional factors. In order to test the effectiveness of the quoted method in a subtropical high biodiversity ecosystem, we intend to identify assemblages of fishes, considering: 1 The interspecific variability of their bodies; 2 The interspecific variability of their sagittae otoliths; 3 The degree of matching between the structures of the assemblages obtained by itens 1 and 2; 4. The inclusion of intraspecific morphological data variability (ontogeny). (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

SILIPRANDI, CAROLINA C.; TUSET, VICTOR M.; LOMBARTE, ANTONI; FARRE, MARC; ROSSI-WONGTSCHOWSKI, CARMEN L. D. B.. Optimal fishing samplers to reveal the morphological structure of a fish assemblage in a subtropical tidal flat. Neotropical Ichthyology, v. 17, n. 1, 2019. (11/50317-5, 14/26417-8, 14/20323-1)

Academic Publications

(References retrieved automatically from State of São Paulo Research Institutions)

SILIPRANDI, Carolina Correia. Are landmarks analysis adequate to identify fish assemblages in a subtropical ecosystem? Study of case for the Araçá Bay (São Sebastião, Brazil). 2018. Doctoral Thesis - Universidade de São Paulo (USP). Instituto Oceanográfico (IO/DIDC) São Paulo.