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Evolution and functional anatomy of the mantle margin in the Pteriomorphia (Mollusca, Bivalvia)

Grant number: 15/09519-4
Support Opportunities:Scholarships in Brazil - Doctorate
Effective date (Start): August 01, 2015
Effective date (End): March 31, 2019
Field of knowledge:Biological Sciences - Zoology - Morphology of Recent Groups
Acordo de Cooperação: Coordination of Improvement of Higher Education Personnel (CAPES)
Principal Investigator:José Eduardo Amoroso Rodriguez Marian
Grantee:Jorge Alves Audino
Host Institution: Instituto de Biociências (IB). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Associated scholarship(s):17/01365-3 - Comparative phylogenetic methods and mantle margin evolution: implications for morphological and ecological diversification in Pteriomorphia (Mollusca, Bivalvia), BE.EP.DR

Abstract

In bivalve mollusks, the mantle margin, typically organized in three folds, comprises a key-feature to understand the evolutionary radiation of the group through the occupation of diverse niches. In the clade Pteriomorphia, which is largely composed of epifaunal bivalves, the mantle margin is extremely diverse and presumptively associated with the habits and habitats occupied by these organisms. The present research project aims at investigating the morphological diversity of the mantle margin in Pteriomorphia, integrating comparative and functional approaches to infer the evolution of this anatomical region. Hypotheses of homology and evolutionary convergence of pallial characters will be tested within a phylogenetic framework, which will also form a basis to test for correlation between morphology and habitat/life habits. Investigations concerning morphological diversity of the mantle margin are scarce and rarely integrated within an evolutionary context. In addition, several lines of evidence suggest the correlation between the pallial margin and life habit diversification in Bivalvia, highlighting the relevance of the present project as a model for studies on evolution and diversity in the marine benthos. To investigate the anatomy of the mantle margin in the Pteriomorphia, representative species from Pteriomorphian families will be studied through the analysis of specimens deposited in museum collections. The evolution of the mantle margin will be studied by means of reconstructions of character ancestral state based on published phylogenetic trees, testing hypotheses of homology and evolutionary convergence of pallial features, as well as correlation between pallial features and life habits. Additionally, the functional anatomy of the mantle margin in fresh specimens of representative species from the major Pteriomorphian families will be investigated in detail using integrative microscopy techniques to provide basis to understand patterns identified in the previous analysis. (AU)

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Scientific publications (7)
(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)
AUDINO, JORGE A.; MARIAN, JOSE E. A. R.. Form and function of tentacles in pteriomorphian bivalves. Journal of Morphology, v. 281, n. 1, p. 33-46, . (15/09519-4)
AUDINO, JORGE A.; MARIAN, JOSE E. A. R.. Form and function of tentacles in pteriomorphian bivalves. Journal of Morphology, . (15/09519-4)
AUDINO, JORGE A.; MARIAN, JOSE EDUARDO A. R.. On the evolutionary significance of the mantle margin in pteriomorphian bivalves. AMERICAN MALACOLOGICAL BULLETIN, v. 34, n. 2, p. 12-pg., . (15/09519-4)
AUDINO, JORGE A.; SERB, JEANNE M.; MARIAN, JOSE EDUARDO A. R.. Phylogeny and anatomy of marine mussels (Bivalvia: Mytilidae) reveal convergent evolution of siphon traits. ZOOLOGICAL JOURNAL OF THE LINNEAN SOCIETY, v. 190, n. 2, p. 592-612, . (17/01365-3, 15/09519-4)
AUDINO, JORGE A.; MARIAN, JOSE EDUARDO A. R.. Detailed comparative anatomy of the Pinnidae (Mollusca, Bivalvia) reveals further unusual mantle specializations. ZOOLOGISCHER ANZEIGER, v. 285, p. 27-36, . (17/01365-3, 15/09519-4)
AUDINO, JORGE ALVES; SERB, JEANNE MARIE; AMOROSO RODRIGUEZ MARIAN, JOSE EDUARDO. Hard to get, easy to lose: Evolution of mantle photoreceptor organs in bivalves (Bivalvia, Pteriomorphia). Evolution, v. 74, n. 9, . (17/01365-3, 15/09519-4)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
AUDINO, Jorge Alves. Evolution of the mantle margin in Pteriomorphia (Mollusca: Bivalvia): insights into the macroecology of the marine benthos. 2019. Doctoral Thesis - Universidade de São Paulo (USP). Instituto de Biociências (IBIOC/SB) São Paulo.

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