Hélène HEGARET

Physiologie / interactions bivalves/microalgues toxiques

Directrice de recherche
CNRS

Assignment

Laboratoire LEMAR

Equipe/Team PANORAMA

THEMES DE RECHERCHE DÉVELOPPÉS

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

RESEARCH THEMS DEVELOPED

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

Contact

Links

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/

2019 

  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⟩ (IF2017: 1,729)
  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 (IF2017: 4.348). 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⟩ (IF2017: 4.129)

2020 

  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 impairs the performance of oyster embryos and larvae. Harmful Algae, 92, 101744 (9p.). https://doi.org/10.1016/j.hal.2020.101744, hal-02879884)
  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). Journal of Phycology. 56(3):775-783. https://doi.org/10.1111/jpy.12977, hal-02880016)
  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. Developmental and Comparative Immunology 108: 103660 https://doi.org/10.1016/j.dci.2020.103660, hal-02880026)
  4. Gaillard S., Le Goïc N., Malo F., Boulais M., Fabioux C., Zaccagnini L., Carpentier L., Sibat M., Réveillon D., Séchet V., Hess P., Hégaret H. (2020). Cultures of Dinophysis sacculus, D. acuminata and pectenotoxin 2 affect gametes and fertilization success of the Pacific oyster, Crassostrea gigas. Env. Poll. 265 (B):114840 10.1016/j.envpol.2020.114840, hal-02880050)

2021 

  1. Long, M., Peltekis, A., González-Fernández, C., Hégaret, H., Bailleul, B. (2021) Allelochemical interactions between Alexandrium minutum and Chaetoceros muelleri: insights into photosynthesis and membrane integrity. Harmful Algae, 103:101997. https://doi.org/10.1016/j.hal.2021.101997, ⟨hal-03162016⟩
  2. Gaillard S., Réveillon D., Danthu, C., Hervé, F., Sibat, M., Carpentier L., Hégaret H., Séchet V., Hess P. (2021) Effect of a 24 h salinity stress on the growth, biovolume, toxins, osmolytes and metabolite profiles on three strains of the Dinophysis acuminata-complex (“D. sacculus“) Harmful Algae. Vol 107 (102009) https://doi.org/10.1016/j.hal.2021.102009
  3. Castrec, J., Fabioux, C., Le Goïc, N., Boulais, M., Soudant, P., Hégaret, H. (2021). The toxic dinoflagellate Alexandrium minutum affects oyster gamete health and fertilization potential. Marine Environmental research, 169: 105401 https://doi.org/10.1016/j.marenvres.2021.105401
  4. Boullot Floriane, Fabioux Caroline, Hégaret Helene, Boudry Pierre, Soudant Philippe, Benoit Evelyne (2021). Electrophysiological Evaluation of Pacific Oyster (Crassostrea gigas) Sensitivity to Saxitoxin and Tetrodotoxin. Marine Drugs, 19(7), 380 (17p.). https://doi.org/10.3390/md19070380 , https://archimer.ifremer.fr/doc/00704/81561/
  5. Sauvey A., Denis F., Hégaret H., Le Roy B., Lelong C., Jolly O., Pavie M., Fauchot J. (2021) Interactions between filter-feeding bivalves and toxic diatoms: influence on the feeding behavior of Crassostrea gigas and Pecten maximus and on toxin production by Pseudo-nitzschia. Toxins, 13, 577. https://doi.org/10.3390/toxins13080577

Participation in research projects