Acipenser sturio Linnaeus, 1758

Iglésias, Samuel P., Bergot, Patricia, Breton, Pascal, Brunelle, Stéphanie, Camusat, Mathieu, Causse, Romain, Charbonnel, Éric, Chevaldonné, Pierre, Cordier, Yves, Cosquer, Paul, Cuillandre, Jean-Pierre, Curd, Amelia, Dubas, Rémy, Duhau, Muriel, Derrien-Courtel, Sandrine, Devique, Gabriel, Dixneuf, Stéphane, Duhamel, Erwan, Farque, Pierre-André, Francour, Patrice, Fontana, Yann, Gamon, Adelaïde, Gicqueau, Charly, Goascoz, Nicolas, Hassani, Sami, Jadaud, Angélique, Kopp, Dorothée, Lamour, Laure, Bris, Sylvain Le, Lévèque, Laurent, Liger, Pablo, Lorance, Pascal, Louisy, Patrick, Maran, Vincent, Méhault, Sonia, Metral, Luisa, Morin-Repinçay, Alizée, Mouchel, Olivier, Pere, Anthony, Quéro, Jean-Claude, Renoult, Julien P., Roche, François, Schweyer, Livier, Spitz, Jérôme, Thiriet, Pierre & Thomas, Wilfried, 2020, French ichthyological records for 2018, Cybium 44 (4), pp. 285-307 : 289

Acipenser sturio Linnaeus, 1758

A European sea sturgeon, Acipenseridae ( Fig. 2D ), was captured on 4 Jun. 2018 by the fisherman Mr Pierre Nicolas, on the coastal trawler Lhassa from Concarneau with a bottom trawl. It was captured between the Glénan archipelago and the island of Groix (Bay of Biscay, France), at 47.647667°N, – 3.743767°W, at 60 m depth on bottom a mixed sand and rock seafloor. The fresh specimen measured 115 cm TL. A fin clip was collected by the fisherman and is preserved at SMC with No. BPS-4006. The specimen was released alive in very good condition. Recorded by S.P. Iglésias. A previous specimen of sturgeon, 110.5 cm TL, was captured by the same fisherman on 12 Nov. 2012 in the same area ( Iglésias, 2013). The present specimen, most evidently born in captivity, was initially released according to a reintroduction plan for this Critically Endangered and protected species ( MEDDTL, 2011). All capture information and samples were returned to the competent authorities according to the National Action Plan for the European sea sturgeon.

Figures

Figure 2. – Significant French ichthyo- logical records for 2018. A: Hexanchus griseus,> 4 m TL, 3 Nov. 2018 (white arrow = full term aborted individual ~65 cm TL); B: Squatina squatina, 126 cm TL, 10 Mar. 2018; C: Gymnu- ra altavela, ~30 cm TL, 23 Apr. 2018, (photograph: Don Jacques Pompa); D: Acipenser sturio, 115 cm TL, 4 Jun. 2018 (photograph: Pierre Nicolas), E: Acipenser gueldenstaedtii, ~60 cm TL, 9 Jun. 2018 (beached); F: Dalo- phis imberbis, ~40 cm TL, 3 Mar. 2018 (beached).