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Kennedy, James; Ólafsdóttir, Anna H; Aradóttir, Svandís Eva; Egilsdóttir, Svanhildur; Pampoulie, Christophe (2023): Characteristics of Centrolophus niger collected south of Iceland in July 2017 and July 2021 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.955695, In: Kennedy, J et al. (2023): Centrolophus niger south of Iceland in July 2017 and July 2021 [dataset bundled publication]. PANGAEA, https://doi.org/10.1594/PANGAEA.955698

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Abstract:
This data set has biological measurements and stomach content analysis for fourteen specimens of Centrolophus niger which were frozen whole at sea during the Icelandic part of the International Ecosystem Summer Survey in Nordic Seas (IESSNS) in July 2017 and July 2021. In 2017, three specimens were collected to confirm species identification by a specialist at home institute. In 2021, all caught specimens were collected for detailed biological study. The C. niger were by-catch in a scientific pelagic ecosystem survey which includes trawling, cod-end mesh size 50 mm, in the surface layer, trawl headline visible in surface and foot rope at approximately 35 m depth. On December 1st, 2021, total weight of specimens was measured frozen and again thawed, thawed 16 hours at 0 °C. Length was measured to the nearest mm, weight to nearest 0.01 g, sex labelled as unidentified when macroscopic examination of gonads was inconclusive, maturity scale was mature, immature, or unidentified when macroscopic examination was inconclusive. Stomach, cut at oesophagus and pyloric caecae, was weighted with prey content intact and after prey was squished out of stomach. Otoliths were collected from each specimen. For detailed information about the surveys see the cruise reports attached to the campaigns. The data is provided by the Marine and Freshwater Research Institute (MFRI) in Iceland.
Keyword(s):
Centrolophus niger; mesopelagic; prey; rare; Stomach contents
Supplement to:
Kennedy, James; Ólafsdóttir, Anna H; Aradóttir, Svandís Eva; Egilsdóttir, Svanhildur; Pampoulie, Christophe (2024): Biological information on a rare pelagic fish, black ruff Centrolophus niger , caught in Icelandic waters: Distribution, feeding, and otoliths. Journal of Fish Biology, 104(3), 598-610, https://doi.org/10.1111/jfb.15611
Related to:
Ólafsdóttir, Anna H; Pampoulie, Christophe: Fish and invertebrate trawl sampling south and west of Iceland in July 2021 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.942987
Project(s):
Sustainable Management of Mesopelagic Resources (SUMMER)
Funding:
Horizon 2020 (H2020), grant/award no. 817806: Sustainable management of mesopelagic resources
Coverage:
Median Latitude: 62.916289 * Median Longitude: -19.677481 * South-bound Latitude: 62.671800 * West-bound Longitude: -24.486000 * North-bound Latitude: 63.047500 * East-bound Longitude: -16.386500
Date/Time Start: 2017-07-17T10:53:00 * Date/Time End: 2021-07-21T19:11:00
Minimum DEPTH, water: 13.5 m * Maximum DEPTH, water: 264.0 m
Event(s):
A10-2017_305  * Latitude Start: 62.711000 * Longitude Start: -16.404300 * Latitude End: 62.671800 * Longitude End: -16.399800 * Date/Time Start: 2017-07-17T10:53:00 * Date/Time End: 2017-07-17T11:23:00 * Elevation Start: -1878.0 m * Elevation End: -1878.0 m * Location: Nordic Seas * Campaign: IESSNS_2017 (A10-2017) * Basis: Arni Fridriksson * Method/Device: Multipurpose pelagic trawl - 832 (MULTPELT-832)
A12-2021_327  * Latitude Start: 63.047500 * Longitude Start: -16.406667 * Latitude End: 63.010500 * Longitude End: -16.386500 * Date/Time Start: 2021-07-17T23:06:00 * Date/Time End: 2021-07-17T23:36:00 * Elevation Start: -1531.0 m * Elevation End: -1552.0 m * Mesh size: 50 mm * Location: Nordic Seas * Campaign: IESSNS_2021 (A12-2021) * Basis: Arni Fridriksson * Method/Device: Multipurpose pelagic trawl - 832 (MULTPELT-832)
A12-2021_330  * Latitude Start: 62.713500 * Longitude Start: -17.382167 * Latitude End: 62.714833 * Longitude End: -17.308167 * Date/Time Start: 2021-07-18T18:46:00 * Date/Time End: 2021-07-18T19:16:00 * Elevation Start: -1704.0 m * Elevation End: -1728.0 m * Mesh size: 50 mm * Location: Nordic Seas * Campaign: IESSNS_2021 (A12-2021) * Basis: Arni Fridriksson * Method/Device: Multipurpose pelagic trawl - 832 (MULTPELT-832)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1 Event labelEventKennedy, James
2 Year of observationYear obsa ADKennedy, James
3 Cruise/expeditionExpeditionKennedy, James
4 Station labelStationKennedy, James
5 CommentCommentKennedy, JamesTrawl station type (PTRAWL = surface, DeepTrawl = watercolumn)
6 Depth, bathymetricBathy depthmKennedy, JamesTrawl in water
7 Depth, bathymetricBathy depthmKennedy, JamesTrawl out of water
8 Towing speedTowing speedknKennedy, JamesAt tow depth
9 Trawling distanceTrawling disnmiKennedy, JamesAt tow depth
10 Trawling timeTrawl tminKennedy, JamesAt tow depth
11 Trawl vertical openingTrawl v openmKennedy, JamesAt tow depth
12 Trawl door horizontal openingTrawl door h openmKennedy, JamesAt tow depth
13 Trawl headline depthTrawl headline depthmKennedy, JamesTow begins
14 Trawl headline depthTrawl headline depthmKennedy, JamesTow ends
15 Depth, water, top/minimumDepth water topmKennedy, James
16 Depth, water, bottom/maximumDepth water botmKennedy, James
17 DEPTH, waterDepth watermKennedy, JamesCalculated average/mean valuesGeocode
18 Mesh sizeMesh sizemmKennedy, JamesCodend meshsize
19 Wire lengthWire lengthmKennedy, JamesWrap wire length
20 Sweeps lengthSweeps lmKennedy, James
21 Temperature, waterTemp°CKennedy, JamesAt tow depth
22 Temperature, waterTemp°CKennedy, JamesAt 5 m depth from surface
23 Temperature, airTTT°CKennedy, JamesAt sea level
24 Species, unique identificationSpecies UIDKennedy, JamesVisual identification (VID)
25 Species, unique identification (URI)Species UID (URI)Kennedy, JamesVisual identification (VID)
26 Species, unique identification (Semantic URI)Species UID (Semantic URI)Kennedy, JamesVisual identification (VID)
27 Specimen identificationSpec IDKennedy, James
28 Centrolophus niger, total lengthC. niger TLcmKennedy, JamesFish measuring board
29 Centrolophus niger, fork lengthC. niger FLcmKennedy, JamesFish measuring board
30 Length, standardl stdcmKennedy, JamesFish measuring board
31 Wet massWet mgKennedy, JamesFish, wet weightedfrozen
32 Wet massWet mgKennedy, JamesFish, wet weightedthawed
33 Fish, gutted, massGutted mgKennedy, JamesFish, wet weighted
34 Liver, massLiver mgKennedy, JamesFish, wet weighted
35 SexSexKennedy, JamesVisual identification (VID)
36 Maturation stageMat stKennedy, JamesVisual identification (VID)
37 OtolithOtolith#Kennedy, JamesCounted
38 Stomach, wet massStom wmgKennedy, JamesFish, wet weighted
39 Stomach, wet massStom wmgKennedy, JamesFish, wet weightedempty
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
490 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 
Event		2 
Year obs [a AD]		3 
Expedition		4 
Station		5 
Comment
(Trawl station type (PTRAWL = ...)		6 
Bathy depth [m]
(Trawl in water)		7 
Bathy depth [m]
(Trawl out of water)		8 
Towing speed [kn]
(At tow depth)		9 
Trawling dis [nmi]
(At tow depth)		10 
Trawl t [min]
(At tow depth)		11 
Trawl v open [m]
(At tow depth)		12 
Trawl door h open [m]
(At tow depth)		13 
Trawl headline depth [m]
(Tow begins)		14 
Trawl headline depth [m]
(Tow ends)		15 
Depth water top [m]		16 
Depth water bot [m]		17 
Depth water [m]
(Calculated average/mean values)		18 
Mesh size [mm]
(Codend meshsize)		19 
Wire length [m]
(Wrap wire length)		20 
Sweeps l [m]		21 
Temp [°C]
(At tow depth)		22 
Temp [°C]
(At 5 m depth from surface)		23 
TTT [°C]
(At sea level)		24 
Species UID
(Visual identification)		25 
Species UID (URI)
(Visual identification)		26 
Species UID (Semantic URI)
(Visual identification)		27 
Spec ID		28 
C. niger TL [cm]
(Fish measuring board)		29 
C. niger FL [cm]
(Fish measuring board)		30 
l std [cm]
(Fish measuring board)		31 
Wet m [g]
(frozen, Fish, wet weighted)		32 
Wet m [g]
(thawed, Fish, wet weighted)		33 
Gutted m [g]
(Fish, wet weighted)		34 
Liver m [g]
(Fish, wet weighted)		35 
Sex
(Visual identification)		36 
Mat st
(Visual identification)		37 
Otolith [#]
(Counted)		38 
Stom wm [g]
(Fish, wet weighted)		39 
Stom wm [g]
(empty, Fish, wet weighted)
A10-2017_305 2017A10-2017305PTRAWL187818784.82.43034122.00003417.0503478011.711.711.2Centrolophus nigermarinespecies.orgurn:lsid:marinespecies.org:taxname:126831132.731.227.9397.65377.56336.374.63unidentifiableimmature24.672.97
A10-2017_3052017A10-2017305PTRAWL187818784.82.43034122.00003417.0503478011.711.711.2Centrolophus nigermarinespecies.orgurn:lsid:marinespecies.org:taxname:126831234.231.528.3400.53380.22338.514.85maleimmature212.813.43
A10-2017_3052017A10-2017305PTRAWL187818784.82.43034122.00003417.0503478011.711.711.2Centrolophus nigermarinespecies.orgurn:lsid:marinespecies.org:taxname:126831334.332.429.2433.65403.30352.193.92maleimmature212.853.49
A12-2021_327 2021A12-2021327PTRAWL153115525.22.63031117.50003115.5503608011.110.89.9Centrolophus nigermarinespecies.orgurn:lsid:marinespecies.org:taxname:126831436.233.731.2578.36532.41463.3511.85maleimmature213.705.84
A12-2021_3272021A12-2021327PTRAWL153115525.22.63031117.50003115.5503608011.110.89.9Centrolophus nigermarinespecies.orgurn:lsid:marinespecies.org:taxname:126831537.834.631.7558.07529.65453.6412.37malemature225.646.89
A12-2021_3272021A12-2021327PTRAWL153115525.22.63031117.50003115.5503608011.110.89.9Centrolophus nigermarinespecies.orgurn:lsid:marinespecies.org:taxname:126831639.337.833.4685.44642.43558.3613.41maleimmature228.457.64
A12-2021_3272021A12-2021327PTRAWL153115525.22.63031117.50003115.5503608011.110.89.9Centrolophus nigermarinespecies.orgurn:lsid:marinespecies.org:taxname:126831734.031.528.3419.80384.11329.259.08maleimmature213.324.70
A12-2021_3272021A12-2021327PTRAWL153115525.22.63031117.50003115.5503608011.110.89.9Centrolophus nigermarinespecies.orgurn:lsid:marinespecies.org:taxname:126831841.237.934.6759.05723.14623.4118.55unidentifiablemature220.128.08
A12-2021_3272021A12-2021327PTRAWL153115525.22.63031117.50003115.5503608011.110.89.9Centrolophus nigermarinespecies.orgurn:lsid:marinespecies.org:taxname:126831942.139.435.9845.88801.39695.3519.99maleimmature234.887.79
A12-2021_330 2021A12-2021330PTRAWL170417285.62.83027117.00002713.5503478011.010.810.1Centrolophus nigermarinespecies.orgurn:lsid:marinespecies.org:taxname:1268311034.832.929.3453.51431.42386.967.55unidentifiableimmature212.024.13
A12-2021_335 2021A12-2021335PTRAWL7587815.42.73034116.20003417.0503588011.011.010.9Centrolophus nigermarinespecies.orgurn:lsid:marinespecies.org:taxname:1268311134.832.729.3479.77458.70406.529.59malemature212.845.68
A12-2021_339 2021A12-2021339PTRAWL7868215.02.53034113.00003417.0503528010.110.911.4Centrolophus nigermarinespecies.orgurn:lsid:marinespecies.org:taxname:1268311240.937.334.2762.81737.33650.0014.53femalemature223.916.60
A12-2021_3392021A12-2021339PTRAWL7868215.02.53034113.00003417.0503528010.110.911.4Centrolophus nigermarinespecies.orgurn:lsid:marinespecies.org:taxname:1268311341.338.234.9757.71736.94661.6417.50femalemature216.578.39
A12-2021_343 2021A12-2021343DeepTrawl4004003.53.56028151.0250250250278264.050918807.210.411.1Centrolophus nigermarinespecies.orgurn:lsid:marinespecies.org:taxname:1268311438.636.232.8655.25642.10576.0916.94maleunidentifiable217.576.77