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Characterization of feeding structures along the development of Scyphozoa ephyrae

Grant number: 16/24801-0
Support type:Scholarships abroad - Research Internship - Master's degree
Effective date (Start): May 29, 2017
Effective date (End): July 27, 2017
Field of knowledge:Biological Sciences - Zoology - Morphology of Recent Groups
Principal researcher:André Carrara Morandini
Grantee:Mayara de Almeida Jordano
Supervisor abroad: Hiroshi Miyake
Home Institution: Instituto de Biociências (IB). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Research place: Kitasato University, Sagamihara, Japan  
Associated to the scholarship:15/25142-8 - Temperature effect over ontogenetic patterns of feeding structures in scyphozoan ephyrae: functional and ecological implications, BP.MS

Abstract

The diversity of adult jellyfish prey capture structures is associated with different capture mechanisms and feeding habits. The understanding of morphological structures development can clarify feeding mechanics and, consequently, increase the knowledge about the trophic consequences of the recurrent jellyfish blooms. By describing the formation of feeding mechanisms during the early differentiation from ephyra to the adult medusa, in many scyphozoan species, important functional and evolutionary information can be revealed. The present BEPE Project aims to describe the initial developmental stages in Rhizostomeae species, focusing on the structures of oral arms. Species of different lineages will be followed from recent released ephyrae until they reach the adult morphology. Morphological descriptions will focus on the transition of ephyra manubrium into the 8 filtering oral arms of adults. In addition to the observations of live animals, pictures will be taken, at standard intervals, over the development of medusae. In order to increase the diversity of species studied, we intend to visit the Kitasato University School of Marine Biosciences (KUSMB) and the Enoshima Aquarium (EA), institutions that regularly sample and cultivate a greater diversity of Rhizostomeae species. The goals of this project are complementary to the applicant's MSc project, that aims to study such developmental patterns in scyphomedusae species, under different temperatures. (AU)

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