Swim bladder measurements of Cyclothone species from the BATHYPELAGIC cruise to the Northeast Atlantic Ocean ...

• Main Authors: Sarmiento-Lezcano, Airam Nauzet, Olivar, M Pilar, Caballero Cansino, Maria Jose, Couret, María, Castellón, Arturo, Hernández-León, Santiago, Peña, Marian
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: body-mass density; bristlemouth; fatty-tissue; Gas; Histology; micronekton; swimbladder; Event label; Station label; Light mode; DATE/TIME; LATITUDE; LONGITUDE; DEPTH, water; Species, unique identification; Species, unique identification URI; Species, unique identification Semantic URI; Fish, standard length; Swim bladder, length; Swim bladder, height; Swim bladder, width; Swim bladder, angle; Swim bladder, volume; Swim bladder, radius; Aspect ratio; MOCNESS opening/closing plankton net 1 sqm; Calculated average/mean values; Visual observation; Caliper; Measured under a microscope using an ocular micrometer; Calculated; BATHYPELAGIC; Sarmiento de Gamboa; Biomass and Active Flux in the Bathypelagic Zone BATHYPELAGIC; Estructura y dinámica del ecosistema bentopelágico de talud en dos zonas oligotróficas del Mediterráneo una aproximación multidisciplinar y a distintas escalas temporales en las Islas Baleares IDEADOS; Severo Ochoa Centre of Excellence ICM_Excellence_Centre; Sustainable Management of Mesopelagic Resources SUMMER; Tropical and South Atlantic climate-based marine ecosystem predictions for sustainable management TRIATLAS; Northeast Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.954940; https://doi.pangaea.de/10.1594/PANGAEA.954940

This dataset contains the values of swim bladder length, height, width, angle, volume, equivalent spherical radius and aspect ratio in Cyclothone spp. measured during the Bathypelagic cruise (from 24th May to 23rd June 2018). Samples were obtained with MOCNESS-1 m² (with a 0.2 mm mesh size) zooplankton net during day and night hauls carried out from the surface to 1800 m depth. MOCNESS samples were preserved in 5% buffered formalin. Standard length (SL, ±0.01 mm) and swim bladder (Sw, ±0.001 mm) on each specimen were measured at the land-based laboratory. A stereo microscope fitted with an ocular micrometer was used to obtain the swim bladder length height, width, and swim bladder angle (θ). The longitudinal axis was set as the reference line for the angle (θ =0) with positive values over the reference line. Swim bladder volumes were approximated using the formula for a prolate spheroid, the equivalent spherical radius was estimated following the equation of Strasberg (1953) and the aspect ratio was ...