Diet composition of the Atlantic bluefin tuna (Thunnus thynnus L.) collected in 1998-1999 in the Icelandic Basin ...

This dataset presents the diet composition of tuna during autumn migrations to the Iceland Basin south of the continental shelf for the year 1998 and 1999 (area Va and XII defined by ICES). Each line in the dataset represents a different prey item found in the stomach of one tuna fish with a specifi...

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Bibliographic Details
Main Authors: Pampoulie, Christophe, Ólafsdóttir, Anna H
Format: Dataset
Language:English
Published: PANGAEA 2020
Subjects:
Icelandic basin
mesopelagic organisms
occurence
preys items
Tuna diet
Sample ID
Identification
Thunnus thynnus, length class
Month
Year of observation
Code
Thunnus thynnus, group
Number of prey
Occurrence
Species
Longline deployment
Basin Scale Analysis, Synthesis and Integration EURO-BASIN
North Atlantic Climate NACLIM
Sustainable Management of Mesopelagic Resources SUMMER
Iceland
North Atlantic
Online Access:https://dx.doi.org/10.1594/pangaea.915551
https://doi.pangaea.de/10.1594/PANGAEA.915551
Description
Summary:This dataset presents the diet composition of tuna during autumn migrations to the Iceland Basin south of the continental shelf for the year 1998 and 1999 (area Va and XII defined by ICES). Each line in the dataset represents a different prey item found in the stomach of one tuna fish with a specific ID number. Therefore, several lines represent the total number of prey item found in one tuna stomach. For the stomach content analysis, the data were separated by geographical areas recorded in the column G called “area”. Tuna were also classified according to their size distribution defined in the column “groups”. A total of 36 prey species or higher taxa are described in 421 stomach samples: 17 teleost fishes, 4 squid, 1 octopus, 11 crustaceans and 2 other invertebrate species. The most important prey species are European flying squid (Todarodes sagittatus), barracudinas (Paralepididae) and gonate squid (Gonatus sp.). The identification of prey items was performed by identification of individual prey items, ...

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