Trophic ecology of squids in the Benguela Upwelling System assessed through stomach content, fatty acid and stable isotopes analyses in austral spring 2021 - Stomach content of squids

DOI

Squids were collected during the research cruise SO285 on RV Sonne in the northern (nBUS) and southern (sBUS) Benguela Upwelling System between September 13 and October 9, 2021 in order to determine their trophic position and nutritional ecology. The cruise was part of the TRAFFIC (Trophic tRAnsfer eFFICiency in the Benguela Current) project. Samples were retrieved from 17 rectangular midwater trawl (RMT) net hauls at 11 stations in the nBUS (sampling range 88–600 m) and 17 RMT net hauls at 14 stations in the sBUS (sampling range 80–750 m). Furthermore, hooks and lines were used at 10 stations in the nBUS (ranging from 15 to 160 min per station, 2–6 rods) and 13 stations in the sBUS (ranging from 20 to 105 min per station, 1–6 rods) in the upper two meters of the water column. Dorsal mantle length (DML) of each specimen was measured to the nearest mm below. Visual stomach content analyses of 53 stomachs from chosen epi- and mesopelagic squid species were performed using a stereo-microscope (7.5–50x magnification). Stomach content analyses showed that squid species preyed on a variety of organisms ranging from crustaceans to lanternfishes (Myctophidae) and flying squids (Ommastrephidae).

Identifier
DOI https://doi.pangaea.de/10.1594/PANGAEA.974071
Related Identifier References https://doi.pangaea.de/10.1594/PANGAEA.974064
Related Identifier References https://doi.pangaea.de/10.1594/PANGAEA.974073
Related Identifier References https://doi.pangaea.de/10.1594/PANGAEA.974072
Metadata Access https://ws.pangaea.de/oai/provider?verb=GetRecord&metadataPrefix=datacite4&identifier=oai:pangaea.de:doi:10.1594/PANGAEA.974071
Provenance
Creator Kremer, Kira; Bode-Dalby, Maya ORCID logo
Publisher PANGAEA
Publication Year 2024
Funding Reference Bundesministerium für Bildung und Forschung, Bonn https://doi.org/10.13039/501100002347 Crossref Funder ID 03F0797A Trophic Transfer Efficiency in the Benguela Current; Federal Ministry of Education and Research https://doi.org/10.13039/501100002347 Crossref Funder ID SPACES II 03F0797C Trophic Transfer Efficiency in the Benguela Current; Federal Ministry of Education and Research https://doi.org/10.13039/501100002347 Crossref Funder ID SPACES II 03F0797D Trophic Transfer Efficiency in the Benguela Current
Rights Creative Commons Attribution 4.0 International; Data access is restricted (moratorium, sensitive data, license constraints); https://creativecommons.org/licenses/by/4.0/
OpenAccess false
Representation
Resource Type Dataset
Format text/tab-separated-values
Size 764 data points
Discipline Biospheric Sciences; Ecology; Geosciences; Natural Sciences
Spatial Coverage (10.863W, -31.993S, 15.850E, -20.049N); South Atlantic Ocean
Temporal Coverage Begin 2021-09-13T01:00:49Z
Temporal Coverage End 2021-10-08T05:01:21Z