Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Döring, Julian; Neumann, Sarah Isabel; Sloterdijk, Hans; Ekau, Werner (2018): Age at length data for larval African halfbeak Hyporhamphus picarti (Hemiramphidae) in the Sine Saloum estuary, Senegal [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.885775, Supplement to: Döring, J et al. (2018): Seasonal growth differences of larval Hyporhamphus picarti (Hemiramphidae) in the Sine Saloum estuary, Senegal. Journal of Applied Ichthyology, 34(1), 97-102, https://doi.org/10.1111/jai.13528

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
The African halfbeak Hyporhamphus picarti (Hemiramphidae) is one of the most abundant species within the ichthyoplankton community of the Sine Saloum estuary (Senegal). A year-round occurrence of larvae suggests that the Sine Saloum is an important spawning habitat for this species. Annual fluctuations in water temperature, however, can have severe impacts on the survival probabilities of marine fish larvae. To determine whether temperature has an effect on the growth of H. picarti during its larval development, larval age at length and somatic growth rates were investigated for two contrasting spawning seasons in 2014: February (cold season, 20.8°C) and June (warm season, 26.4°C).
H. picarti larvae were sampled at two stations inside the Saloum River using two vertically connected neuston nets (30 × 15 cm, 500 µm mesh size). The nets were attached to a catamaran (Hobie Cat 15), which was towed by a motorboat at a speed of two to three knots. Fish larvae were fixed immediately after the haul with a 30% ethanol/sea water solution and stored in an electric cooling box. At the laboratory, fish larvae were successively transferred to 50% and 70% ethanol. Water temperatures (°C) and salinities (practical salinity scale) were determined at each station with a multiprobe (WTW 3430).
Larval standard lengths (SL ± 0.01 mm) were measured using a calibrated stereomicroscope micrometre (Stemi SV 11 and Stemi 2000-C, Zeiss). The sagittal otoliths were dissected and stored in immersion oil for several days. In order to assess the age of H. picarti larvae at a given length, otolith daily growth increments were counted (core to edge) along the otolith's largest diameter using a stereo microscope (Axioskop, Zeiss) at 200-500× magnification. Increments were counted three times by the same reader, and counter read once by an additional reader. If the results of the counts of both persons deviated by more than one increment, the respective otolith was discarded. Otolith diameter was measured using ImageJ 1.49 (Rasband, WS, US National Institutes of Health, Bethesda, MD, http://imagej.nih.gov/ij/).
Coverage:
Median Latitude: 13.955632 * Median Longitude: -16.710502 * South-bound Latitude: 13.939862 * West-bound Longitude: -16.752759 * North-bound Latitude: 13.987173 * East-bound Longitude: -16.625987
Date/Time Start: 2014-01-01T00:00:00 * Date/Time End: 2014-01-01T00:00:00
Minimum DEPTH, water: m * Maximum DEPTH, water: 12 m
Event(s):
Saloum_river_2014-02-S1 (S1)  * Latitude: 13.939862 * Longitude: -16.752759 * Location: Africa, Senegal * Method/Device: Neuston net (NEU)
Saloum_river_2014-02-S2 (S2)  * Latitude: 13.987173 * Longitude: -16.625987 * Location: Africa, Senegal * Method/Device: Neuston net (NEU)
Saloum_river_2014-06-S1 (S1)  * Latitude: 13.939862 * Longitude: -16.752759 * Location: Africa, Senegal * Method/Device: Neuston net (NEU)
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
Event labelEventDöring, Julian
Longitude of eventLongitudeDöring, Julian
Longitude of eventLongitudeDöring, Julian
Station labelStationDöring, Julian
DATE/TIMEDate/TimeDöring, JulianGeocode
MonthMonthDöring, Julian
DEPTH, waterDepth watermDöring, JulianGeocode
Temperature, waterTemp°CDöring, Julian
SalinitySalDöring, Julian
10 Hyporhamphus picarti, larvae, lengthH. picarti larv lmmDöring, Julian
11 Hyporhamphus picarti, otolith diameterH. picarti otolith diammmDöring, Julian
12 Hyporhamphus picarti, larvae, ageH. picarti agedaysDöring, Julian
Size:
928 data points

Data

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


Event

Longitude

Longitude

Station

Date/Time

Month

Depth water [m]

Temp [°C]

Sal
10 
H. picarti larv l [mm]
11 
H. picarti otolith diam [mm]
12 
H. picarti age [days]
Saloum_river_2014-02-S1 -16.7528-16.7528S12014February820.837.310.68000.150015
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.37.72200.120011
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.38.51400.126011
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.35.74200.08104
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.38.51400.124510
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.36.93000.11409
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.37.02900.10509
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.313.02600.180016
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.314.04000.195017
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.312.16800.174014
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.37.52400.123011
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.37.52400.114010
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.38.31600.124512
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.312.24600.174015
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.36.93000.10508
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.35.19750.08255
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.39.12000.129010
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.38.61300.1260
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.37.12800.11108
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.35.64300.09306
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.34.95000.07655
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.34.65300.06756
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.34.35600.0705
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.34.85100.08405
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.34.65300.07503
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.36.83100.10505
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.35.94000.08105
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.36.88050.11108
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.36.33600.10208
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.35.44500.08554
Saloum_river_2014-02-S1-16.7528-16.7528S12014February820.837.37.92000.126010
Saloum_river_2014-02-S2 -16.6260-16.6260S22014February1221.738.112.48000.1860
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.113.10400.186014
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.112.32400.192017
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.111.38800.153015
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.113.10400.192020
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.111.38800.180015
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.115.13200.219020
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.113.26000.180020
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.112.48000.177019
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.19.48000.147015
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.111.85600.156013
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.110.20000.165013
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.112.94800.174015
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.19.30000.129013
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.111.38800.156014
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.18.61300.1410
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.113.72500.183016
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.116.38000.246019
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.111.85600.174015
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.115.28800.210020
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.114.50800.222020
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.114.19600.213019
Saloum_river_2014-02-S2-16.6260-16.6260S22014February1221.738.115.44400.219021
Saloum_river_2014-06-S1 -16.7528-16.7528S12014June826.436.13.86100.07052
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.14.05900.07805
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.14.25700.07956
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.14.45500.07204
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.14.65300.08105
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.14.65300.06904
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.14.75200.08105
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.14.85100.07355
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.14.85100.08255
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.15.14800.09006
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.15.14800.07805
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.15.44500.07804
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.15.44500.0945
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.15.44500.09003
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.15.64300.09007
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.15.74200.09007
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.16.38550.09605
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.16.53400.09306
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.16.53400.10357
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.16.73200.09307
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.16.73200.1020
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.16.93000.11408
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.16.93000.11107
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.16.93000.109510
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.17.45200.10807
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.17.52400.10958
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.17.52400.120010
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.17.68000.11856
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.17.82100.11109
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.18.31600.11108
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.18.51400.12609
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.18.61300.11709
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.18.91000.12309
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.19.00900.11858
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.19.15750.126010
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.19.48000.12608
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.19.60000.12607
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.19.70200.1260
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.19.78000.14708
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.19.80100.13809
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.19.96000.150011
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.110.20000.1560
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.110.32000.14859
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.110.38000.13608
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.110.52000.144012
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.110.92000.150010
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.111.16000.156011
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.111.16000.165010
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.111.52000.165013
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.112.32400.183011
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.112.63600.189011
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.112.79200.180013
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.112.94800.168012
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.113.10400.171013
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.113.72800.195012
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.114.35200.186013
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.114.50800.192013
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.114.66200.192014
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.114.66400.210013
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.114.82000.2430
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.114.82000.210013
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.115.60000.213014
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.115.75600.201015
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.115.75600.258012
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.115.91200.220513
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.115.91200.213013
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.115.91200.225015
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.116.06800.234017
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.116.22400.243016
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.116.38000.2520
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.116.53600.252016
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.116.53600.213015
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.117.31600.229514
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.117.31600.229514
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.117.47200.246017
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.117.47200.255014
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.117.78400.255019
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.117.94000.294015
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.118.25200.255017
Saloum_river_2014-06-S1-16.7528-16.7528S12014June826.436.121.68400.354522