Winter cod 2022: Monitoring data recorded during RV ALKOR cruise AL568b - Gadus morhua stomach content data ...

• Main Authors: Funk, Steffen, Möllmann, Christian
• Format: Dataset
• Language: English
• Published: PANGAEA 2023
• Subjects: Baltic Sea; cod monitoring data; Field measurements; Gadus morhua; RV ALKOR; Western Baltic; winter; Event label; Latitude of event; Longitude of event; Date/Time of event; Cruise/expedition; Station label; Individual ID; Stomach, wet mass; Stomach content, wet mass; Stomach content; Prey digestion level; Species, unique identification; Species, unique identification URI; Number of prey; Prey, length; Prey, mass; Comment; Trawl net; Fishing rod; Visual identification; AL568b; Alkor 1990
• Online Access: https://dx.doi.org/10.1594/pangaea.955073; https://doi.pangaea.de/10.1594/PANGAEA.955073

This data contains monitoring data of the RV ALKOR cruise AL568b conducted in January 2022 (January 24th – February 1st) in the Western Baltic Sea by the University of Hamburg. The cruise was part of the 5-year monitoring programme Winter cod 2021-25 (Monitoring winter spawning activity of Western Baltic cod (Gadus morhua) (2021-25)) of the University of Hamburg aiming at investigating the early-winter spawning activity of Western Baltic cod to identify potential climate-induced shifts in spawning phenology. The data set contains cod stomach content data. Stomachs of cod were taken during single fish parameter measurements directly on board. Stomachs were immediately frozen on -20°C and subsequently analysed in the laboratory of the University of Hamburg. Cod stomach samples were defrosted and adherent veins were carefully removed from the outer stomach tissue. Adherent water was removed for approximately 5 seconds with paper tissues and stomachs were weighted (accuracy: 0.001 g). Subsequently, stomachs were ...