Pegusa cf. nasuta (Pallas, 1814)
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publication ID |
https://doi.org/ 10.26028/cybium/2020-444-001 |
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persistent identifier |
https://treatment.plazi.org/id/D8676925-FFBC-FFBE-D4A0-FBD6FB72F888 |
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treatment provided by |
Felipe |
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scientific name |
Pegusa cf. nasuta (Pallas, 1814) |
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Pegusa cf. nasuta (Pallas, 1814) View in CoL
A Blackhand sole, Soleidae ( Fig. 9A View Figure 9 1-A View Figure 1 2 View Figure 2 ), was collected on 10 Oct. 2018 by S.P. Iglésias and P. Breton during a survey of intertidal fishes in the Bay of La Forêt. The specimen was collected using a push net, at low tide, on the Plage des Sables Blancs (Concarneau, Finistère, France), at 47.8780°N, – 3.9312°W, at 0.5 m depth, on thin compact white sand. The fresh specimen measured 70 mm TL, 61 mm SL and weighed 2.07 g. Ray and scale counts as follow: D: 82, A: 63, P 9/9; V: 6 (right)/5 (left); LL: 133 (without tail and upper head). The specimen was collected together with 31 individuals of Pegusa lascaris (Risso, 1810) , 20 individuals of Buglossid-
ium luteum (Risso, 1810) and one individual of Scophthalmus maximus (Linnaeus, 1758) , all immature, during a 115 minute fishing operation. The specimen was preserved with the collection No. MNHN-IC 2020-0099 and a tissue sample was preserved under No. BPS-4219. Several dozen Blackhand soles ( Fig. 7I View Figure 7 ) were collected on 18 Oct. 2018 by L. Schweyer during the survey program Suivi des nourriceries de juvéniles de poissons plats dans le PNMI. The specimens were collected using a beach trawl, at the beginning of the rising tide, on Kervel beach (Bay of Douarnenez, Finistère, France) at 48.1170°N, – 4.2850°W, at 0.05 to 0.4 m depth. Fresh specimens ranging from 41 to 113 mm TL. The specimens were collected together with S. maximus and Echiichthys vipera (Cuvier, 1829) , while P. lascaris was apparently absent from the sampling. The species appears very common at this locality. Pegusa impar (Bennett, 1831) is considered a junior synonym of P. nasuta by some authors (e.g. Chabanaud, 1929; Desoutter, 1990; Desoutter-Meniger, 1997) but is considered a valid species by others (see the Catalog of Fishes by Fricke et al., 2020) and FishBase ( Froese and Pauly, 2019). Consequently we use the provisional name Pegusa cf. nasuta for the present specimen pending a taxonomic clarification of the species P. impar . The species complex Pegusa nasuta + P. impar is recorded from the Mediterranean Sea and western Africa. According to Quéro (pers. comm.), the distributions mentioned by Quéro et al. (2003a), “ Gibraltar to Scotland ” and “Brittany”, have been erroneously reversed for Pegusa nasuta (+ P. impar ) and P. lascaris , respectively. The record of P. nasuta (+ P. impar ) from Brittany by Quéro et al. (2003a) is the only one for the refer to a specimen with locality and date. Consequently the present specimen of Pegusa cf. nasuta could be viewed as a first record for the French Atlantic waters supported by photographs and a voucher specimen.
Acknowledgments. – We greatly thank the cited fishers for their collection of specimens and information. Marion Quinio-Scavinner (Ifremer) and Alice Vastel (Sinay) are thanked for checking fishery observer data. Nalani Schnell for examining the Lebetus ; Marie-Laure Acolas (IRSTEA) and Joern Gessner (IGB) for the identification of Sturgeon species; Jonathan Pfliger from the ichthyological collection at MNHN. We thank the RV l’Europe’s captain and crew, Nadine Le Bris (chief scientist), Jordi Grinyo and the Office Français de la Biodiversité, for their involvement in the CYLICE-ECO cruise, and we are forever indebted to the late Boris Daniel, friend, colleague and conservationist for always supporting our work on Mediterranean deep-sea biology. We also owe special thanks to the members of the Peau-Bleue organization and all the volunteers who contributed to this article by participating in the Fish Watch Forum citizen science program, whether they were observers, validators, controllers or scientific experts. The authors thank two anonymous reviewers for their useful comments.
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