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Olivar, M Pilar; Contreras, Tabit; Hulley, P Alexander; López, Cristina; Tuset, Victor M; Castellón, Arturo (2021): Abundance of early stages of mesopelagic fish through the water column and diel patterns in the tropical and equatorial Atlantic. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.928080 (dataset in review)

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Abstract:
This file contains data on numerical abundance of early stages of fishes collected in April 2015 across the tropical and equatorial Atlantic. Eleven stations were sampled both day and night, from the oligotrophic region close to the Brazilian coast to the more productive region off the western African coast. Samples were obtained by means of a Multiple Opening/Closing Net and Environmental Sensing System (Wiebe et al., 1985), MOCNESS-1 m2 net, from 800 m to the surface, discriminating 8 layers of the water column. Samples were fixed on board and stored in 5% buffered formalin and seawater for later sorting and identification in the laboratory. These data were obtained within the project: "Migrants and Active Flux In the Atlantic Ocean, financed by the Spanish Ministerio de Ciencia e Innovación CTM2012-39587-C04.
Keyword(s):
Biodiversity; Ichthyoplankton; vertical distribution
Related to:
Olivar, M Pilar; Contreras, Tabit; Hulley, P Alexander; Emelianov, Mikhail; López-Pérez, Cristina; Tuset, Victor M; Castellón, Arturo (2018): Variation in the diel vertical distributions of larvae and transforming stages of oceanic fishes across the tropical and equatorial Atlantic. Progress in Oceanography, 160, 83-100, https://doi.org/10.1016/j.pocean.2017.12.005
Olivar, M Pilar; Hulley, P Alexander; Castellón, Arturo; López, Cristina; Tuset, Victor M; Contreras, Tabit (2021): Abundance of mesopelagic fish through the water column and diel patterns in the tropical and equatorial Atlantic. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.927991
Further details:
Fahay, Michael P (2007): Early stages of fishes in the western North Atlantic Ocean (Davis Strait, southern Greenland and Flemish Cap to Cape Hatteras). Volume 1: Acipenseriformes through Syngnathiformes. Volume 2: Scorpaeniformes through Tetraodontiformes. Northwest Atlantic Fisheries Organization, Dartmouth, Nova Scotia, Canada, 1696 pp.
Hernández-León, Santiago; UTM-CSIC (2018): MAFIA Cruise, RV Hespérides. UTM-CSIC, https://doi.org/10.20351/29HE20150403
Moser, H Geoffrey (1996): The early stages of fishes in the California Current region. Allen Press, Inc., Lawrence, Kansas, USA, 33, 1505 pp.
Moser, H Geoffrey; Ahlstrom, Elbert H (1974): Role of larval stages in systematic investigations of marine teleosts: the Myctophidae, a case study. Fishery Bulletin, 72(2), 391-413
Olivar, M Pilar; Fortuño Alós, José Manuel (1991): Guide to ichthyoplankton of the southeast Atlantic (Benguela Current region). Scientia Marina, 55(1), 1-383
Richards, W J (2005): Early stages of Atlantic fishes. An identification guide for the western central North Atlantic. CRC Press, Boca Raton, FL, USA, 1312 pp., https://doi.org/10.1201/9780203500217
Wiebe, P H; Morton, A W; Bradley, A M; Backus, R H; Craddock, J E; Barber, V; Cowles, Timothy; Flierl, Glenn R (1985): New developments in the MOCNESS, an apparatus for sampling zooplankton and micronekton. Marine Biology, 87, 313-323, https://doi.org/10.1007/BF00397811
Coverage:
Median Latitude: 7.447348 * Median Longitude: -24.259300 * South-bound Latitude: -10.081300 * West-bound Longitude: -31.885100 * North-bound Latitude: 25.346400 * East-bound Longitude: -17.420600
Date/Time Start: 2015-04-07T14:05:00 * Date/Time End: 2015-04-28T02:34:00
Minimum DEPTH, water: m * Maximum DEPTH, water: 810 m
Event(s):
MAFIA_MOC_10D * Latitude Start: 18.053700 * Longitude Start: -20.197900 * Latitude End: 17.998300 * Longitude End: -20.191400 * Date/Time Start: 2015-04-23T14:58:00 * Date/Time End: 2015-04-23T16:39:00 * Elevation: -3182.0 m * Mesh size: 0.2 mm * Location: Central Atlantic * Campaign: MAFIA * Basis: Hespérides * Method/Device: MOCNESS opening/closing plankton net 1 sqm (MOC1)
MAFIA_MOC_10N * Latitude Start: 18.138200 * Longitude Start: -20.201000 * Latitude End: 18.166000 * Longitude End: -20.190500 * Date/Time Start: 2015-04-24T02:18:00 * Date/Time End: 2015-04-24T03:23:00 * Elevation: -3177.0 m * Mesh size: 0.2 mm * Location: Central Atlantic * Campaign: MAFIA * Basis: Hespérides * Method/Device: MOCNESS opening/closing plankton net 1 sqm (MOC1)
MAFIA_MOC_11D * Latitude Start: 21.668400 * Longitude Start: -18.768300 * Latitude End: 21.641700 * Longitude End: -18.819200 * Date/Time Start: 2015-04-25T15:51:00 * Date/Time End: 2015-04-25T17:15:00 * Elevation: -3225.0 m * Mesh size: 0.2 mm * Location: Central Atlantic * Campaign: MAFIA * Basis: Hespérides * Method/Device: MOCNESS opening/closing plankton net 1 sqm (MOC1)
Comment:
When specimens were damaged and identification could not be made with absolute certainty, a “?” was included in front of the species name.
Specimens of Diaphus that could not be identified to species level, were ascribed to one of the two basic morphotypes described by Moser and Ahlstrom (1974): The slender morphotype, “Diaphus sp. SM” (slender body, small head, and persistent series of melanophores on the ventral tail), which develop a suborbital photophore as adults, and the deep morphotype, “Diaphus sp. DM” (with a thick body, bulbous head, and one melanophore on the ventral tail), that do not develop a suborbital photophore as adults.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Event labelEventOlivar, M Pilar
2IdentificationIDOlivar, M Pilarhaul
3Date/time startDate/time startOlivar, M Pilar
4Date/time endDate/time endOlivar, M Pilar
5Latitude of eventLatitudeOlivar, M Pilar
6Longitude of eventLongitudeOlivar, M Pilar
7Latitude of event 2Latitude 2Olivar, M Pilar
8Longitude of event 2Longitude 2Olivar, M Pilar
9CodeCodeOlivar, M Pilarhaul layer
10Light modeL modeOlivar, M Pilar
11Depth, bathymetricBathy depthmOlivar, M Pilar
12DEPTH, waterDepth watermOlivar, M PilarGeocode – min
13DEPTH, waterDepth watermOlivar, M PilarGeocode – max
14Towing speedTowing speedknOlivar, M Pilar
15Mouth area, effectiveMouth area effm2Olivar, M Pilar
16Water volume, filteredVol filteredm3Olivar, M PilarCalculated
17Life stageLife stageOlivar, M PilarVisual identification (VID)
18OrderOrderOlivar, M PilarVisual identification (VID)
19FamilyFamilyOlivar, M PilarVisual identification (VID)
20Taxon/taxaTaxaOlivar, M PilarVisual identification (VID)
21Number of individualsInd No#Olivar, M PilarCounting, visual
22CommentCommentOlivar, M Pilar
Size:
22815 data points

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