Event Abstract Back to Event Physiological variations of monoamine tissue content during the reproductive cycle in P.perna and their outcome in marine polluted sites. Mounia Sarah Klouche1, Philippe De Deurwaerdère2, 3, Nouria Lakhdar Ghazal1 and Soumaya Benomar1* 1 Mohammed V-Agdal University, Biology, Morocco 2 University of Bordeaux 2, Life Sciences, France 3 IMN UMR CNRS 5293, France Monoamines are present in bivalvia where they are thought to control reproduction functions. Reproduction of Perna perna is disrupted in polluted sites, altering gametogenesis, invidious laying or atresia. Although these modifications could involve changes in monoamines function in those mussels, the distribution and the putative seasonal variations of monoamines are lacking in Perna perna. In this study we determined noradrenaline (NA), dopamine (DA), and 5-hydroxytryptamine (5-HT) tissue content in three organs (gonads, cerebral and pedal ganglia) of 3 mussel populations at 4 reproductive stages (resting, developing, maturing and egg-laying). Samples of Perna perna were collected from an unpolluted site (Bouknadel) and two polluted sites (Hay al-Fath, Mohammedia) localized alongside the Atlantic cost of Morocco. The distinct stages of reproductive cycle of Perna perna were identified histologically on gonads in each population. Monoamine contents were determined by HPLC coupled to electrochemical detection. The results show in the unpolluted site a distinct distribution of monoamines in selected organs (NA, DA and 5-HT in pg/mg respectively: 128±10, 15±1, 8±1 in gonads; 96±19, 75±9, 85±14 in pedal ganglia; 91±12, 158±13; 51±7 in cerebral ganglia). NA concentrations sharply increased during maturing stages and declined during spawning. DA and 5-HT concentrations increased during egg-laying (> threefold increase). Pollution altered the seasonal variations of monoamines. In particular, NA content did not fluctuate in polluted sites. Differences between polluted sites were observed mostly during laying for DA or 5-HT contents. This study extends previous data in bivalve mollusks to the situation of Perna perna that monoamines contents fluctuate with respect to organs and seasons. It further shows clear-cut variations for each monoamine during the stages of the sexual cycle highlighting their distinct functional role. The disruption of reproductive functions in polluted sites could be therefore underlined by alterations of monoaminergic systems and notably NA. Keywords: Monoamines tissue content, Perna Perna, Pedal ganglion, cerebral ganglion, saisonal variation, marine pollution, sexual cycle Conference: 4th Conference of the Mediterrarnean Neuroscience Society, Istanbul, Turkey, 30 Sep - 3 Oct, 2012. Presentation Type: Poster Presentation Topic: Abstracts Citation: Klouche M, De Deurwaerdère P, Lakhdar Ghazal N and Benomar S (2013). Physiological variations of monoamine tissue content during the reproductive cycle in P.perna and their outcome in marine polluted sites.. Conference Abstract: 4th Conference of the Mediterrarnean Neuroscience Society. doi: 10.3389/conf.fnhum.2013.210.00042 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: 07 Feb 2013; Published Online: 11 Apr 2013. * Correspondence: Prof. Soumaya Benomar, Mohammed V-Agdal University, Biology, Rabat, Morocco, sbenomar@fsr.ac.ma 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 Mounia Sarah Klouche Philippe De Deurwaerdère Nouria Lakhdar Ghazal Soumaya Benomar Google Mounia Sarah Klouche Philippe De Deurwaerdère Nouria Lakhdar Ghazal Soumaya Benomar Google Scholar Mounia Sarah Klouche Philippe De Deurwaerdère Nouria Lakhdar Ghazal Soumaya Benomar PubMed Mounia Sarah Klouche Philippe De Deurwaerdère Nouria Lakhdar Ghazal Soumaya Benomar 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.