Biologist, ecologist, fisheries scientist

Senior Scientist / Former director of LEMAR from July 2016 to December 2021


Lemar laboratory




My research activities at the Institute for Research for Development have focused since 1988 on tropical fish and aquatic ecosystems, in partnership with the scientific communities of South America (1988-1995) and Sub-Saharan Africa (since 1995). Between 2000 and 2010, I carried out scientific work on Marine Protected Areas in West Africa, in particular, in collaboration with stakeholders and populations. I have also studied biodiversity in the tropical Atlantic and participated in assessments conducted as part of the development of the IUCN Red List of East Atlantic fish species. I was a member of the IPBES panel of experts for the regional report “Africa” in which I was coordinator (CLA) of chapter 1. During my career, I have been principal investigator for several research projects, the last of which (ANR EPURE, 2012-2016) focused on heavy metal contamination in marine species in the northern Canary Current. Since July 2016, I am the head of the Laboratory of Environmental Marine Sciences (LEMAR), which is a joint reserch unit (UMR) of UBO, CNRS, IRD and Ifremer and I remain involved in several research projects on tropical marine ecology.

As minhas atividades de investigação no Institut de Recherche pour le Développement têm-se concentrado nos peixes e ecossistemas aquáticos tropicais desde 1988, em parceria com comunidades científicas da América do Sul (1988-1995) e da África Subsaariana (desde 1995). Entre 2000 e 2010, realizei trabalhos científicos sobre Áreas Marinhas Protegidas na África Ocidental, em relação com as entidades e populações envolvidas. Estudei também a biodiversidade no Atlântico tropical e participei nas avaliações realizadas para a elaboração da Lista Vermelha das espécies de peixe no Atlântico Oriental da IUCN. Fui membro do Painel de Especialistas do IPBES para o Relatório Regional de África, no qual fui o Coordenador (CLA) para o Capítulo 1. Durante a minha carreira, fui responsável por vários projetos de investigação, o último dos quais (ANR EPURE, 2012-2016) centrou-se na contaminação por metais pesados de espécies marinhas da Corrente Norte das Canárias. Juntei-me ao Laboratoire des Sciences de l’Environnement Marin (LEMAR, UMR da UBO, CNRS, IRD e Ifremer) em Setembro de 2010 e fui o seu diretor de Julho de 2016 até ao final de Dezembro de 2021, mantendo-me envolvido em vários projetos de investigação sobre ecologia marinha tropical. Desde 1 de Janeiro de 2022, deixei o cargo de diretor e assumi novas atividades de investigação no seio da equipa Discovery.


Polidoro, B. A., Ralph, G. M., Strongin, K., Harvey, M., Carpenter, K. E., Arnold, R., Buchanan, J. R., Camara, K. M. A., Collette, B. B., Comeros-Raynal, M. T., De Bruyne, G., Gon, O., Harold, A. S., Harwell, H., Hulley, P. A., Iwamoto, T., Knudsen, S. W., Lewembe, J. de D., Linardich, C., … Williams, A. (2017). The status of marine biodiversity in the Eastern Central Atlantic (West and Central Africa). Aquatic Conservation: Marine and Freshwater Ecosystems. fdi:010071369. Cite
Kantoussan, J., Ecoutin, J. M., Lae, R., Thiaw, O. T., & Tito-de-Morais, L. (2018). A multimetric-index approach using fisheries data to assess fish assemblage structure in relation to salinity gradient in a tropical West African estuary. African Journal of Marine Science, 40(2), 175–185. fdi:010073214. Cite
Bodin, N., N’Gom-Kâ, R., Kâ, S., Thiaw, O. T., Tito-de-Morais, L., Le Loc’h, F., Rozuel-Chartier, E., Auger, D., & Chiffoleau, J.-F. (2013). Assessment of trace metal contamination in mangrove ecosystems from Senegal, West Africa. Chemosphere, 90(2), 150–157. Cite
Bodin, N., Ka, R., Le Loc’h, F., Raffray, J., Budzinski, H., Peluhet, L., & Tito-de-Morais, L. (2011). Are exploited mangrove molluscs exposed to persistent organic pollutant contamination in Senegal, West Africa? Chemosphere, 84(3), 318–327. Cite
Sadio, O., Simier, M., Ecoutin, J.-M., Raffray, J., Lae, R., & Tito-de-Morais, L. (2015). Effect of a marine protected area on tropical estuarine fish assemblages: Comparison between protected and unprotected sites in Senegal. Ocean & Coastal Management, 116, 257–269. fdi:010065772. Cite
Kaimuddin, A. H., Lae, R., & Tito-de-Morais, L. (2016). Fish Species in a Changing World: The Route and Timing of Species Migration between Tropical and Temperate Ecosystems in Eastern Atlantic. Frontiers in Marine Science, 3, 162. Cite
Waeles, M., Planquette, H., Afandi, I., Delebecque, N., Bouthir, F., Donval, A., Shelley, R. U., Auger, P.-A., Riso, R. D., & Tito-de-Morais, L. (2016). Cadmium in the waters off South Morocco: Nature of particles hosting Cd and insights into the mechanisms fractionating Cd from phosphate. Journal of Geophysical Research-Oceans, 121(5), 3106–3120. Cite
Sadio, O., Simier, M., Le Loc’h, F., & Tito-de-Morais, L. (2021). Length-weight relationships of 5 fish species from the Sine Saloum estuary, Senegal, West Africa. Journal of Applied Ichthyology, Early View. Cite
Sadio, O., Le Loc’h, F., Simier, M., & Tito-de-Morais, L. (2021). Length-weight relationships of 20 fish species from the Sine Saloum estuary, Senegal, West Africa. Cybium, 45(2), 155–158. Cite
Archer, E., Dziba, L. E., Mulongoy, K. J., Maoela, M. A., Walters, M., Biggs, R., Salem, M.-C. C., DeClerck, F., Diaw, M. C., Dunham, A. E., Failler, P., Gordon, C., Harhash, K. A., Kasisi, R., Kizito, F., Nyingi, W. D., Oguge, N., Osman-Elasha, B., Stringer, L. C., … Sitas, N. (2021). Biodiversity and ecosystem services on the African continent - What is changing, and what are our options? Environmental Development, 37, 100558. Cite
Sadio, O., Simier, M., Le Loc’h, F., & Tito-de-Morais, L. (2021). Length-weight relationships of 19 fish species from two tropical artificial reservoirs (Manantali and Selingue) in Mali, West Africa. Cybium, 45(1), 59–62. Cite
Le Croizier, G., Lacroix, C., Artigaud, S., Le Floch, S., Munaron, J.-M., Raffray, J., Penicaud, V., Rouget, M.-L., Lae, R., & Tito-de-Morais, L. (2019). Metal subcellular partitioning determines excretion pathways and sensitivity to cadmium toxicity in two marine fish species. Chemosphere, 217, 754–762. fdi:010074913 ; Cite
Le Croizier, G., Schaal, G., Point, D., Le Loc’h, F., Machu, E., Fall, M., Munaron, J.-M., Boye, A., Walter, P., Lae, R., & Tito-de-Morais, L. (2019). Stable isotope analyses revealed the influence of foraging habitat on mercury accumulation in tropical coastal marine fish. Science of the Total Environment, 650, 2129–2140. fdi:010074333 ; Cite
Simier, M., Ecoutin, J.-M., & Tito-de-Morais, L. (2019). The PPEAO experimental fishing dataset: Fish from West African estuaries, lagoons and reservoirs. Biodiversity Data Journal, 7(e31374), 54. fdi:010075206. Cite
Afandi, I., Talba, S., Benhra, A., Benbrahim, S., Chfiri, R., Labonne, M., Masski, H., Lae, R., Tito-de-Morais, L., Bekkali, M., & Bouthir, F. Z. (2018). Trace metal distribution in pelagic fish species from the north-west African coast (Morocco). International Aquatic Research, 10(2), 191–205. Cite
Le Croizier, G., Lacroix, C., Artigaud, S., Le Floch, S., Raffray, J., Penicaud, V., Coquille, V., Autier, J., Rouget, M.-L., Le Bayon, N., Lae, R., & Tito-de-Morais, L. (2018). Significance of metallothioneins in differential cadmium accumulation kinetics between two marine fish species. Environmental Pollution, 236, 462–476. fdi:010072702. Cite
Le Croizier, G., Schaal, G., Gallon, R., Fall, M., Le Grand, F., Munaron, J.-M., Rouget, M.-L., Machu, E., Le Loc’h, F., Laë, R., & Tito-de-Morais, L. (2016). Trophic ecology influence on metal bioaccumulation in marine fish: Inference from stable isotope and fatty acid analyses. Science of the Total Environment, 573, 83–95. fdi:010068793. Cite
Ndour, I., Le Loc’h, F., Kantoussan, J., Thiaw, M., Diadhiou, H. D., Ecoutin, J.-M., Tito-de-Morais, L., & Thiaw, O. T. (2014). Changes in the trophic structure, abundance and species diversity of exploited fish assemblages in the artisanal fisheries of the northern coast, Senegal, West Africa. African Journal of Marine Science, 36(3), 361–368. fdi:010062676. Cite
Ecoutin, J.-M., Simier, M., Albaret, J.-J., Laë, R., Raffray, J., Sadio, O., & Tito-de-Morais, L. (2014). Ecological field experiment of short-term effects of fishing ban on fish assemblages in a tropical estuarine MPA. Ocean & Coastal Management, 100, 74–85. Cite
Colléter, M., Gascuel, D., Albouy, C., Francour, P., Tito-de-Morais, L., Valls, A., & Le Loc’h, F. (2014). Fishing inside or outside? A case studies analysis of potential spillover effect from marine protected areas, using food web models. Journal of Marine Systems, 139, 383–395. Cite
Brochier, T., Ecoutin, J. M., Tito-de-Morais, L., Kaplan, D. M., & Laë, R. (2013). A multi-agent ecosystem model for studying changes in a tropical estuarine fish assemblage within a marine protected area. Aquatic Living Resources, 26(02), 147–158. Cite
Azzoug, M., Carre, M., Chase, B. M., Deme, A., Lazar, A., Lazareth, C. E., Schauer, A. J., Mandeng-Yogo, M., Simier, M., Thierno-Gaye, A., & Tito-de-Morais, L. (2012). Positive precipitation-evaporation budget from AD 460 to 1090 in the Saloum Delta (Senegal) indicated by mollusk oxygen isotopes. Global and Planetary Change, 98–99, 54–62. Cite
Guillard, J., Simier, M., Albaret, J.-J., Raffray, J., Sow, I., & Tito-de-Morais, L. (2012). Fish biomass estimates along estuaries: A comparison of vertical acoustic sampling at fixed stations and purse seine catches. Estuarine Coastal and Shelf Science, 107, 105–111. Cite
Colléter, M., Gascuel, D., Ecoutin, J.-M., & Tito-de-Morais, L. (2012). Modelling trophic flows in ecosystems to assess the efficiency of marine protected area (MPA), a case study on the coast of Senegal. Ecological Modelling, 232, 1–13. Cite
Kantoussan, J., Ecoutin, J. M., Simier, M., Tito-de-Morais, L., & Laë, R. (2012). Effects of salinity on fish assemblage structure: An evaluation based on taxonomic and functional approaches in the Casamance estuary (Senegal, West Africa). Estuarine, Coastal and Shelf Science, 113, 152–162. Cite
Faye, D., Tito-de-Morais, L., Raffray, J., Sadio, O., Thiaw, O. T., & Le Loc’h, F. (2011). Structure and seasonal variability of fish food webs in an estuarine tropical marine protected area (Senegal): Evidence from stable isotope analysis. Estuarine, Coastal and Shelf Science, 92(4), 607–617. Cite