Discrimination of the redfish (Sebastes mentella) stock components ...

• Main Authors: Trella, K., Podolska, M., Nedrdeaas, K., Janusz, J.
• Format: Conference Object
• Language: unknown
• Published: ASC 2011 - Theme session A 2024
• Subjects: Ecosystem observation, processes and dynamics; Pressures, impacts, conservation, and management; Irminger Sea; Sebastes mentella
• Online Access: https://dx.doi.org/10.17895/ices.pub.25028621.v1; https://ices-library.figshare.com/articles/conference_contribution/Discrimination_of_the_redfish_Sebastes_mentella_stock_components/25028621/1

No abstracts are to be cited without prior reference to the author.The study material was collected in 2004 and 2005 during commercial cruises to the Irminger Sea on board the Polish vessel MT “Wiesbaden”. The ichthyological studies of the pelagic Sebastes mentella include detailed biological analyses, length measurements, otolith collection for age determinations, and digital images of the redfish for meristic and morphometric characters analysis. Comparison of the pelagic redfish from the northeastern and southwestern areas of the Irminger Sea indicates that there are a number of differences, including differences in spatial and vertical distribution, ambient temperature, length and age composition and morphometric–meristic characteristics. Significant differences between fish samples from the northeastern fishing grounds at depths greater than 500 m and fish from the southwestern fishing grounds at depths shallower than 500 m were observed in the number of fin rays in the back part of the dorsal fin, in ...