Physiologie / interactions bivalves/microalgues toxiques

Chargée de recherche


Laboratoire LEMAR

Equipe/Team PANORAMA


Culture et physiologie du phytoplancton
Impact du phytoplancton toxique sur la physiologie des bivalves
Ecologie, physiologie, immunité et écotoxicologie des bivalves


Culture, physiology and toxicity of phytoplancton
Impact of toxic phytoplancton on molluscan physiology
Ecology, physiology, immunity and ecotoxicology of molluscs



GdR « PHYCOTOX : Des microalgues aux risques pour l’Homme et l’écosystème» : Groupement de Recherche national GdR3659 CNRS/IFREMER

Scopus Author ID: 6507867020

ORCID ID: 0000-0003-4639-9013

ResearcherID: B-7206-2008

Researchgate page

Resume : http://www.univ-brest.fr/menu/recherche-innovation/pages-chercheurs/HEGARET-Helene/

Last years publications :


  1. Pousse, E., Flye-Sainte-Marie, J., Alunno-Bruscia, M., Hégaret, H., Jean, F. (2018) Sources of paralytic shellfish toxin accumulation variability in the Pacific oyster Crassostrea gigas. Toxicon 144:14-22 https://doi.org/10.1016/j.toxicon.2017.12.050, hal-02324600⟩
  2. Siano, R.; Chapelle, A.; Antoine, V.; Chauvin, J.; Rigaut-Jalabert, F.; Guillou, L.; Hégaret, H.; Leynaert, A.; Curd, A. (2018). Citizen participation in monitoring phytoplankton seawater discolorations”. Marine Policy http://dx.doi.org/10.1016/j.marpol.2018.01.022, hal-02025670⟩
  3. Castrec J., Soudant P., Payton L., Tran D., Long M., Miner P., Lambert C., Le Goïc N., Huvet A., Quillien V., Boullot F., Zouher A., Fabioux C, Hégaret H. (2018) Bioactive extracellular compounds produced by the dinoflagellate Alexandrium minutum are highly detrimental for oysters Aquatic Toxicology 199: 188-198 https://doi.org/10.1016/j.aquatox.2018.03.034, ⟨hal-02324608⟩
  4. Mat, A.M, Klopp, C., Payton, L., Jeziorski, C., Chalopin, M., Amzil, Z., Tran, D., Wikfors, G.H., Hégaret, H., Soudant, P., Huvet, A., Fabioux, C. (2018) Oyster transcriptome response to Alexandrium exposure is related to saxitoxin load and characterized by disrupted digestion, energy balance, and calcium and sodium signaling. Aquatic Toxicology 199:127-137 https://doi.org/10.1016/j.aquatox.2018.03.030, hal-02324597⟩
  5. Petraglia Sassi P.G., Dantas Calixto, C., Tibúrcio, V.P., da Silva Nonato, N., Abrahão, R., Hégaret, H., da Costa Sassi, C.F., Sassi, R. (2018) Effectiveness of nutrient remotion and cell physiology of Amphora sp cultured in shrimp farm effluents. Environmental Science and Pollution Research 25 (18): 17920–17926 https://doi.org/10.1007/s11356-018-2011-5, hal-02324591⟩
  6. Long, M., Tallec, K., Soudant, P., Lambert, C., Le Grand, F., Sarthou, G., Jolley, D., Hégaret, H. (2018) A rapid quantitative fluorescence-based bioassay to study allelopathy from Alexandrium sp. Accepted Environmental Pollution. 242: 1598-1605 https://doi.org/10.1016/j.envpol.2018.07.119, ⟨hal-02130252⟩
  7. Long, M., Tallec, K., Soudant, P., Lambert, C., Le Grand, F., Donval, A., Sarthou, G., Jolley, D., Hégaret, H. (2018) Allelochemicals from Alexandrium minutum induce rapid inhibition of metabolism and modify the membranes from Chaetoceros muelleri. Algal Research. 35: 508-518 https://doi.org/10.1016/j.algal.2018.09.023, hal-02130256⟩
  8. da Silva, P.M., Dantas Farias, N., Queiroga F.R., Hégaret, H., Sassi, R., Soudant P., (2018). A case of disseminated neoplasia in cultured oysters Crassostrea gasar from northeast Brazil. Journal of Invertebrate Pathology https://doi.org/10.1016/j.jip.2018.11.001, hal-02324574⟩



  1. Pousse, E., Flye-Sainte-Marie, J., Alunno-Bruscia, M., Hégaret, H., Rannou, E., Pecquerie, L., Marques, G., Thomas, Y., Castrec, J., Fabioux, C., Long, M., Lassudrie, M., Hermabessière, L., Amzil, Z., Soudant, P., Jean., F. (2018) Modelling paralytic shellfish toxins (PST) accumulation inCrassostrea gigasby using Dynamic Energy Budgets (DEB). Journal of Sea Research. 143:152-164. https://doi.org/10.1016/j.seares.2018.09.002; hal-02114653⟩
  2. Castrec J., Hégaret H., Alunno-Bruscia, M., Picard, M., Soudant P., Petton, B., Boulais, M., Suquet, M., Quéau, I., Ratiskol D., Foulon V., Le Goïc N., Fabioux C. (2019) The dinoflagellate Alexandrium minutum affects development of the oyster Crassostrea gigas, through parental or direct exposure. Environmental Pollution 246: 827-836 . https://doi.org/10.1016/j.envpol.2018.11.084, ⟨hal-02324570⟩
  3. Long, M., Holland, A., Planquette, H., Santana, D.G., Whitby, H., Soudant, P., Sarthou, G., Hégaret, H., Jolley, D. (2019) A multi-traits approach reveals the effects of Cu on the physiology of a lytic strain of Alexandrium minutum. Aquatic Toxicology 210: 251–261 https://doi.org/10.1016/j.aquatox.2019.03.006, hal-02323399⟩


  1. Castrec, J., Hégaret, H., Huber, M., Le Grand, J., Huvet, A., Tallec, K., Boulais, M., Soudant, P., Fabioux, C. (2020) The toxic dinoflagellate Alexandrium minutum impaired oyster free living stages, embryos and larvae. (in press. Harmful Algae).
  2. Gaillard S., Charrier A., Malo F., Carpentier L., Bougaran G., Hégaret H., Réveillon D., Hess P., Séchet V. (2020). Combined effects of temperature, irradiance and pH on Teleaulax amphioxeia (Cryptophycae) physiology and feeding ratio for its predator Mesodinium rubrum (Ciliophora). Accepted in Journal of Phycology
  3. Lassudrie M., Hégaret H., Wikfors GH, da Silva PM (2020) Effects of marine Harmful Algal Blooms on bivalve cellular immunity and infectious diseases: a review. Accepted in Developmental and Comparative Immunology