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Early development of Velella velella medusae in laboratory

2018; Frontiers Media; Volume: 5; Linguagem: Inglês

10.3389/conf.fmars.2018.06.00080

2296-7745

Inês Duarte, Sérgio Miguel Leandro, Margarida Ferreira, Henrique Pinto, Joana Falcão, João Reis, Simão Maia, Sónia Cotrim Marques,

Marine Ecology and Invasive Species

Event Abstract Back to Event Early development of Velella velella medusae in laboratory Inês M. Duarte1, 2*, Sérgio M. Leandro1, 2, Margarida Ferreira3, Henrique J. Pinto1, 2, Joana Falcão2, João Reis1, 2, Simão Maia1, 2 and Sónia C. Marques2, 4 1 Escola Superior de Turismo e Tecnologia do Mar, Politécnico de Leiria, Portugal 2 Centro de Ciências do Mar e do Ambiente (IPLeiria), Portugal 3 Oceanário de Lisboa, Portugal 4 Instituto Português do Mar e da Atmosfera (IPMA), Portugal The pleustonic hydrozoan Velella velella (Linnaeus, 1758) occurs worldwide in tropical and temperate marine waters. Occasionally they form large blooms that are stranded in masses along hundreds of kilometers of coastline. This situation occurred in March 2018 in Peniche beaches, west of Portugal. Live organisms (4-6 cm) were collected near Berlenga Island and maintained in aquarium (200 L), with a water flow similar to an “horizontal kreisel”. After acclimation, the hydroid colonies started to release tiny medusae that were collected to investigate the effect of light on their development. Two different treatments (light and darkness) were tested, each with three replicates of 50 recently released medusa that were fed every two days with a mixture of microalgae (Tetraselmis sp. and Nannochloropsis sp.). The results showed that V. velella medusae exposed to light had more zooxanthellae and grew to a larger size than medusae non-exposed to light. It was also observed the development of axial-adaxial tentacles and gametes in larger specimens from the “light treatment”. In contrast, the medusae subjected to the darkness showed 100% mortality after 15 days. The present work is an important contribution concerning to the development of V. velella medusae in laboratory. Figure 1 Figure 2 Figure 3 Figure 4 Acknowledgements Financial support by FCT through project UID/MAR/04292, Jellyfisheries (POCI-01-0145-FEDER-016772), the Postdoctoral grants attributed to SC Marques (SFRH/BPD/110400/2015), and the Integrated Programme of SR&TD “Smart Valorization of Endogenous Marine Biological Resources Under a Changing Climate” (Centro-01-0145-FEDER-000018), co-funded by Centro 2020 program, Portugal 2020, European Union, through the European Regional Development Fund. The Oceanário de Lisboa is gratefully acknowledged. Keywords: Cnidaria, Hydrozoa, Medusae, development, Velella velella Conference: IMMR'18 | International Meeting on Marine Research 2018, Peniche, Portugal, 5 Jul - 6 Jul, 2018. Presentation Type: Poster Presentation Topic: Aquaculture Citation: Duarte IM, Leandro SM, Ferreira M, Pinto HJ, Falcão J, Reis J, Maia S and Marques SC (2019). Early development of Velella velella medusae in laboratory. Front. Mar. Sci. Conference Abstract: IMMR'18 | International Meeting on Marine Research 2018. doi: 10.3389/conf.FMARS.2018.06.00080 Copyright: The abstracts in this collection have not been subject to any Frontiers peer review or checks, and are not endorsed by Frontiers. They are made available through the Frontiers publishing platform as a service to conference organizers and presenters. The copyright in the individual abstracts is owned by the author of each abstract or his/her employer unless otherwise stated. Each abstract, as well as the collection of abstracts, are published under a Creative Commons CC-BY 4.0 (attribution) licence (https://creativecommons.org/licenses/by/4.0/) and may thus be reproduced, translated, adapted and be the subject of derivative works provided the authors and Frontiers are attributed. For Frontiers’ terms and conditions please see https://www.frontiersin.org/legal/terms-and-conditions. Received: 04 May 2018; Published Online: 07 Jan 2019. * Correspondence: Miss. Inês M Duarte, Escola Superior de Turismo e Tecnologia do Mar, Politécnico de Leiria, Peniche, Portugal, inesmatosduarte@gmail.com Login Required This action requires you to be registered with Frontiers and logged in. To register or login click here. Abstract Info Abstract The Authors in Frontiers Inês M Duarte Sérgio M Leandro Margarida Ferreira Henrique J Pinto Joana Falcão João Reis Simão Maia Sónia C Marques Google Inês M Duarte Sérgio M Leandro Margarida Ferreira Henrique J Pinto Joana Falcão João Reis Simão Maia Sónia C Marques Google Scholar Inês M Duarte Sérgio M Leandro Margarida Ferreira Henrique J Pinto Joana Falcão João Reis Simão Maia Sónia C Marques PubMed Inês M Duarte Sérgio M Leandro Margarida Ferreira Henrique J Pinto Joana Falcão João Reis Simão Maia Sónia C Marques Related Article in Frontiers Google Scholar PubMed Abstract Close Back to top Javascript is disabled. Please enable Javascript in your browser settings in order to see all the content on this page.