Claire Saraux


Institut : IFREMER


Pôles communs : Expertise



  1. Coordinator of MONALISA(fortes MOrtalités NAturelles et Indicateurs pour la gestion des stocks de Sardines et Anchois de Méditerranée) project : environmental variability (in terms of oceanograhy and zooplankton) and its impact on small pelagic population dynamics, effect of prey quantity and quality on small pelagic life history traits, impact of hepatic parasitism on sardines and anchovies,
  2. Participating to POPSTAR project : development of new biologgers combining physiological and geographic information for marine fish
  3. Participating to seabream research programs (SB-TAG, SIGNAL)
  4. Research on seabird life-history traits and population dynamics, link between top-predators and forage fish

Previous projects :

  1. Coordinator of EcoPelGol (étude de la dynamique de l’ECOsystème PELagique du GOlfe du Lion) project : Understanding of small pelagic fish fluctuations in the Gulf of Lions. Test of bottom-up and top-down processes, effect of environmental conditions on small pelagic fish abundance, condition, distribution and life-history traits.
  2. Coordinator of ARPE project : epidemiology of small pelagics in the Gulf of Lions.


Vice-president of the Scientific Advisory Council (SAC) in GFCM,

Stock assessment of small pelagics :

  • Chair of the Stock Assessment of Small Pelagic fish Working Group in GFCM,
  • Participation to STECF stock assessment working groups,

Fisheries management (French management plan for fisheries, etc.)


Responsible of the PELMED acoustic survey in the Gulf of Lions. See the poster for more info.

Several fieldwork periods on seabirds (biologging, behavioural observations, captures, marking, blood sampling) and groundsquirrels (behavioural observations, blood sampling)


PhD students :

  • Guillaume Feuilloley, 2017-2020, Spatio-temporal variability of zooplankton and impacts on small pelagic fish populations in the Gulf of Lions.
  • Quentin Queiros, 2016-2019, Mechanisms of the bottom-up control of sardines and anchovies in the Gulf of Lions through expérimentations and modelisation.
  • Pablo Brosset, 2013-2016, Body condition and consequences on life-history trait plasticity in small pelagic fish of the Mediterranean Sea.
  • Elisabeth Van Beveren, 2012-2015, Population changes in small pelagic fish of the Gulf of Lions : a bottom-up control ?

Master and undergraduate students (JE Longueville 2010, C. Bordier 2011, P. Brosset 2013, A. Perez-Roda 2014, A. Garcia 2015, E. Torreblanca 2015, V. Marques 2015, C. Jac 2016, Q. Queiros 2016, E. Fabrègue 2017, C. Lefebvre 2017, A. Marguerite 2017)

Formation of several field assistants for penguin fieldwork in the Sub-Antarctic and Antarctic regions.



Baudrier, J., et al. "Optimising French fisheries surveys for marine strategy framework directive integrated ecosystem monitoring." Marine Policy. 94 (2018): 10–19.
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Courbin, N., et al. "Short-term prey field lability constrains individual specialisation in resource selection and foraging site fidelity in a marine predator." Ecol. Lett.. 21.7 (2018): 1043–1054.
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Queiros, Q., et al. "Dolphin predation pressure on pelagic and demersal fish in the northwestern Mediterranean Sea." Mar. Ecol.-Prog. Ser.. 603 (2018): 13–27.
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Saraux, C., et al. "Small pelagic fish dynamics: A review of mechanisms in the Gulf of Lions." Deep Sea Research Part II: Topical Studies in Oceanography (2018).
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Viblanc, V. A., et al. "Maternal oxidative stress and reproduction: Testing the constraint, cost and shielding hypotheses in a wild mammal." Functional Ecology. 32.3 (2018): 722–735.
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Authier, M., C. Saraux, and C. Péron. "Variable selection and accurate predictions in habitat modelling: a shrinkage approach." Ecography. 40.4 (2017): 549–560.
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Brosset, P., et al. "Spatio-temporal patterns and environmental controls of small pelagic fish body condition from contrasted Mediterranean areas." Progress in Oceanography. 151 (2017): 149–162.
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Sydeman, W. J., et al. "Best practices for assessing forage fish fisheries-seabird resource competition." Fisheries Research. 194 (2017): 209–221.
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Van Beveren, E., et al. "Predator-prey interactions in the face of management regulations: changes in Mediterranean small pelagic species are not due to increased tuna predation." Can. J. Fish. Aquat. Sci.. 74.9 (2017): 1422–1430.
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Brosset, P., et al. "Linking small pelagic dietary shifts with ecosystem changes in the Gulf of Lions." Mar. Ecol.-Prog. Ser.. 554 (2016): 157–171.
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Brosset, P., et al. "Body reserves mediate trade-offs between life-history traits: new insights from small pelagic fish reproduction." R. Soc. Open Sci.. 3.10 (2016): 160202.
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Saraux, C., et al. "Negative effects of wind speed on individual foraging performance and breeding success in little penguins." Ecol Monogr. 86.1 (2016): 61–77.
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Van Beveren, E., et al. "The fisheries history of small pelagics in the Northern Mediterranean." ICES J. Mar. Sci.. 73.6 (2016): 1474–1484.
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Van Beveren, E., et al. "Can pathogens alter the population dynamics of sardine in the NW Mediterranean?" Mar. Biol.. 163.12 (2016): Unsp-240.
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Viblanc, V. A., et al. "Mutually honest? Physiological ‘qualities’ signalled by colour ornaments in monomorphic king penguins." Biol. J. Linn. Soc.. 118.2 (2016): 200–214.
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Viblanc, V. A., et al. "Kin effects on energy allocation in group-living ground squirrels." J. Anim. Ecol.. 85.5 (2016): 1361–1369.
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BROSSET, P., et al. "Measurement and analysis of small pelagic fish condition: A suitable method for rapid evaluation in the field." Journal Of Experimental Marine Biology And Ecology. 462 (2015): 90–97.
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BROSSET, P., et al. "Influence of environmental variability and age on the body condition of small pelagic fish in the Gulf of Lions." Marine Ecology Progress Series. 529 (2015): 219–231.
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Le Bourg, B., et al. "Trophic niche overlap of sprat and commercial small pelagic teleosts in the Gulf of Lions (NW Mediterranean Sea)." Journal of Sea Research (2015).
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Le Vaillant, M., et al. "Telomere length reflects individual quality in free-living adult king penguins." Polar Biol. 38.12 (2015): 2059–2067.
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SALTON, M., et al. "Carry-over body mass effect from winter to breeding in a resident seabird, the little penguin." Royal Society Open Science. 2.1 (2015): 140390.
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BORDIER, C., et al. "Inter-Annual Variability of Fledgling Sex Ratio in King Penguins." Plos One. 9.12 (2014): 1–17.
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LE MAHO, Y., et al. "Rovers minimize human disturbance in research on wild animals." Nature Methods. 11.12 (2014): 1242–1244.
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SARAUX, C., et al. "Spatial Structure and Distribution of Small Pelagic Fish in the Northwestern Mediterranean Sea." Plos One. 9.11 (2014): 1–12.
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Stier, A., et al. "Starting with a handicap: phenotypic differences between early- and late-born king penguin chicks and their survival correlates." Functional Ecology (2014).
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VAN BEVEREN, E., et al. "Rapid changes in growth, condition, size and age of small pelagic fish in the Mediterranean." Marine Biology. 161.8 (2014): 1809–1822.
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Viblanc, V. A., et al. "Energetic adjustments in freely breeding-fasting king penguins: does colony density matter?" Functional Ecology (2014).
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Péron, C., et al. "Importance of coastal Marine Protected Areas for the conservation of pelagic seabirds: The case of Vulnerable yelkouan shearwaters in the Mediterranean Sea." Biological Conservation. 168 (2013): 210–221.
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MARBEC MARine Biodiversity, Exploitation and Conservation, est une unité de recherche qui regroupe des personnels de 4 organismes : l’IRD, l’Ifremer, l’UM et le CNRS. Son objectif est l’étude de la biodiversité marine des écosystèmes lagunaires, côtiers et hauturiers à différents niveaux d’intégration, depuis les aspects moléculaires, individuels, populationnels et communautaires, et des usages de cette biodiversité par l’Homme. Nous rejoindre