Energy density and elemental composition of deep pelagic crustaceans and fish sampled in October 2017 in the Bay of Biscay, North-East Atlantic

• Main Authors: Chouvelon, Tiphaine, Munschy, Catherine, Bruzac, Sandrine, Caurant, Florence, Churlaud, Carine, Crochet, Sylvette, Guillou, Gaël, Mauffret, Aourell, Méndez-Fernandez, Paula, Niol, Jasmin, Sireau, Teddy, Steinberg, Claire, Wessel, Nathalie, Spitz, Jérome
• Format: Dataset
• Language: English
• Published: PANGAEA 2021
• Subjects: Arsenic; Atomic absorption spectrophotometry (Altec; AMA 254); bathypelagic; Bay of Biscay; Cadmium; Calcium; Calorimetry (Parr 6725 semimicro calorimeter and Parr 6772 precision thermometer); Class; Cobalt; Copper; crustacea; DEPTH; water; Device type; energy density; per dry mass; EVHOE-2017; EVHOE-2017_CHP21-V0494; Family; Field observation; fish; GOVT; Grande Ouverture Verticale trawl; ICP-OES; Varian Vista Pro; Identification; inorganic elements; Iron; Lead; Length; macro-minerals; Magnesium; Manganese; Mercury; mesopelagic; Micro-nutrients; Moisture; Molybdenum; Number of individuals; Order; Phosphorus; Phylum; Potassium; S-(Q)-ICP-MS measurements; Thermo Scientific iCAP-Qc ICP-MS; Sample ID; Sample type; Selenium; Boa; North East Atlantic
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.937338; https://doi.org/10.1594/PANGAEA.937338

The dataset contains energy density values and concentrations in 19 elements analysed in whole bodies of 15 meso- to bathypelagic species sampled in the twilight zone (deep pelagic area) of the Bay of Biscay, North-East Atlantic. The species included 4 crustacean species (Pasiphaea sivado, Sergia robusta, Systellaspis debilis, Ephyrina figueirai) and 11 fish species (Xenodermichthys copei, Searsia koefoedi, Myctophum punctatum, Notoscopelus kroeyeri, Lampanyctus crocodilus, Argyropelecus olfersii, Arctozenus risso, Stomias boa, Serrivomer beanii, Chauliodus sloani, Aphanopus carbo). The elements included 6 major constitutive elements (macro-minerals) and 13 trace elements among which 9 essential (micro-nutrients) and 4 non-essential elements (undesirables, with no know biological function). Specimens were collected during a single fishery in a canyon of the slope of the Bay of Biscay in October 2017, during the EVHOE fishery survey (“Evaluation Halieutique de l'Ouest de l'Europe”; https://doi.org/10.17600/17002300) conducted each autumn by the “Institut Français de Recherche pour l'Exploitation de la Mer” (Ifremer) on R/V Thalassa. A total of 266 individuals belonging to the 15 species were collected at night using a 25 m vertical opening pelagic trawl in the deep scattering layer (ca. 800 m depth in the water column; 1330 m bottom depth). All organisms were collected during one haul of 60 min, at a speed of approximately 4 knots (geographical coordinates at the beginning of the turn/end of the fishing: 45.103°N, -3.543° W). For small fish and crustaceans, organisms belonging to the same species were pooled by individuals of similar sizes. The size of each individual (total length for fish, cephalothorax length for crustaceans, in mm) as well as the total fresh weight of individuals or pools (to the nearest 0.5 g wet mass) were determined on board, and the individuals were rinsed with ultrapure water before storage. Mean individual sizes and fresh wet weights are here reported for each sample constituted by a ...