Question 4189 — environment

Summary

Mr. Benoît Biteau alerts the Minister of Ecological Transition, Biodiversity, Forests, Sea and Fisheries to the suspicious death of several wild boars in autumn 2024 on the beaches of Saint-Brieuc Bay. According to the Côtes d'Armor prefecture, studies in the search for hydrogen sulphide were carried out as part of an autopsy on the corpse of the last four animals found in October 2024. However, the autopsies of these animals were entrusted to the Brest public prosecutor and are, to this day, covered by the secrecy of the investigation. However, as requested by the associations, Sauvegarde du Trégor Goëlo Penthièvre and Defense of victims of green tides, it appears essential to make public the results of the autopsies carried out on the animals, to take, if necessary, the necessary health measures. The ecological damage has by elsewhere been recognized by the Rennes court, in a judgment of July 18, 2023: the judges concluded that the destruction of habitats and the massive collapse of biodiversity, due to the presence of hydrogen sulfide resulting from the decomposition of massively stranded algae. Under such conditions, attested by a judicial decision, it is impossible to envisage that a passing mammal would not be fatally poisoned. And it is enough to go to the scene of the death of these wild boars as the associations regularly do, taking all safety measures, to understand the highly probable link between the in situ detection of the toxic gas that is hydrogen sulphide, resulting from the decomposition of stranded green algae, and its fatal inhalation by these passing animals. In this regard, it is important to remember that already in 2011, 36 wild boars, two coypu and a badger had suffered the same fate on the same premises, and that the National Agency for Food, Environmental and Occupational Health Safety (ANSES) and the National Institute of Industrial Environment and Risks (INERIS), after autopsies, had concluded that the highly probable cause of the death of these animals was the in situ presence of hydrogen sulphide from the decomposition of green algae failed. The MP therefore requests the establishment of a strict protocol in the case of a suspicious death, to provide complete transparency on the dangerousness of green algae. This aims to confirm the presence, or not, of hydrogen sulphide in the tissues or blood of autopsied animals, or the detection of pulmonary edema. Given the serious and urgent nature of the situation, he also wishes to know if she has finally planned to take all necessary health measures; users of the area concerned must also be informed of the risks they run in using it, beyond simple signs minimizing the risk of fatal poisoning.

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