Acipenser sturio Linnaeus, 1758
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publication ID |
https://doi.org/ 10.26028/cybium/2019-433-008 |
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persistent identifier |
https://treatment.plazi.org/id/797AB128-FFA8-FFFF-E97D-FCD6FBB15715 |
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treatment provided by |
Felipe |
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scientific name |
Acipenser sturio Linnaeus, 1758 |
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Acipenser sturio Linnaeus, 1758 View in CoL
A first European sea sturgeon, Acipenseridae ( Fig. 2B View Figure 2 ), was captured on 22-23 April 2017 by Mr Charles Rannou on a recreational boat with a trammel net. It was captured in front of the Concarneau port (Southern Brittany, France), close to the beacon le Cochon, at 47.859°N, – 3.925°W, at about 10 m depth. The specimen was found dead on 24 April into the net and directly brought to the Marine Station of Concarneau located just in front of the capture locality. The specimen was a little damaged due to long time spent dead in water. The fresh specimen measured 922 mm TL, 817 mm FL, head was 195 mm long. It weighed 3430 g, its liver was 83.5 g, its 21 cm long gonads weighed 17.07 g, its pancreas 14.66 g, its spleen 3.65 g. It was tentatively identified as male according to gonad aspect. The specimen was born in captivity in 2013 and it was released at three months old in the Garonne River. The specimen was preserved for taxidermy with the collection No. MNHN-IC 2019-0092 (according to regulation by decree No. 2001-916 of 3 October 2001), and a tissue sample was preserved under No. BPS-3840. A second individual was captured on 5 October 2017 by the fishermen of the coastal trawler P’tit Jules-II from Lorient ( Josse, 2017). It was captured off the island Belle-Île (Bay of Biscay, France), at 47.1288°N, – 3.9347°W, at 114 m depth. The dead specimen was landed in the fish market of Lorient. It was brought to the Marine Station of Concarneau for analyses. The fresh specimen measured 1174 mm TL, and its head was 231 mm long. The eviscerated weight was 6.03 kg. A tissue sample was preserved under No. BPS-3970. The specimen was born in captivity in 2012 and it was released at larval stage in the Garonne River. Recorded by SPI. Both of these specimens, born in captivity, were initially released according to a reintroduction plan for this Critically Endangered and protected species ( Gesner et al., 2010). Their age was known according to genetic parental reattribution and confirmed by reading rings on pectoral ray section. All capture information and samples were returned to the competent authorities according to the National Actions Plan for the European sea sturgeon. The present specimens represent currently rare records for the Bay of Biscay where the species has been extracted.
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