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  • 1
    Keywords: Klimaänderung ; Fischbestand
    Type of Medium: Book
    Pages: VII, 372 S , graph. Darst., Kt
    ISBN: 9788774820710
    Series Statement: ICES cooperative research report 301
    Language: English
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  • 2
    In: Journal of marine systems, New York, NY [u.a.] : Elsevier, 1990, 74(2008), 1/2, Seite 329-342, 0924-7963
    In: volume:74
    In: year:2008
    In: number:1/2
    In: pages:329-342
    Description / Table of Contents: We employed a coupled biologicalphysical, individual-based model (IBM) to estimate spatial and temporal changes in larval fish habitat suitability (the potential for areas to support survival and high rates of growth) of the German Bight, southern North Sea. In this Lagrangian approach, larvae were released into a size-structured prey field that was constructed from in situ measurements of the abundance and prosome lengths of stages of three copepods (Acartia spp., Temora longicornis, Pseudocalanus elongatus) collected on a station grid repeatedly sampled from February to October 2004. The choice of prey species and the model parameterisations for larval fish foraging and growth were based on field data collected for sprat (Sprattus sprattus) and other clupeid larvae. A series of 10-day simulations were conducted using 20 release locations to quantify spatialtemporal differences in projected larval sprat growth rates (mm d- 1) for mid-April, mid-May and mid-June 2004. Based upon an optimal foraging approach, modeled sprat growth rates agreed well with those measured in situ using larval fish ototliths. On the German GLOBEC station grid, our model predicted areas that were mostly unsuitable habitats (areas of low growth potential), e.g. north of the Frisian Islands, and others that were consistently suitable habitats (areas that had high growth potential), e.g. in the inner German Bight. In some instances, modelled larvae responded rapidly (~ 5 days) to changing environmental characteristics experienced along their drift trajectory, a result that appears reasonable given the dynamic nature of frontal regions such as our study area in the southern North Sea.
    Type of Medium: Online Resource
    Pages: graph. Darst.
    ISSN: 0924-7963
    Language: English
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  • 3
    Online Resource
    Online Resource
    [Hamburg] : [Institut für Hydrobiologie und Fischereiwissenschaft, Universität Hamburg]
    Keywords: Forschungsbericht ; Aale
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (30 Seiten, 1,43 MB) , Illustrationen
    Language: German
    Note: Förderkennzeichen BMBF 28-1-73.035-10. - Verbund-Nummer 01129085 , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden
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  • 4
    In: Marine biology, Berlin : Springer, 1967, 159(2012), 11 vom: Nov., Seite 2621-2632, 0025-3162
    In: volume:159
    In: year:2012
    In: number:11
    In: month:11
    In: pages:2621-2632
    In: extent:12
    Type of Medium: Article
    Pages: 12
    ISSN: 0025-3162
    Language: English
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  • 5
    Keywords: Forschungsbericht
    Type of Medium: Online Resource
    Pages: 1 Online-Ressource (105 Seiten, 10,77 MB) , Diagramme, Illustrationen
    Language: German , English
    Note: Paralleltitel dem englischen Berichtsblatt entnommen , Förderkennzeichen BMBF 01DN17019 , Verbundnummer 01177913 , Autoren und druchführende Institution dem Berichtsblatt entnommen , Unterschiede zwischen dem gedruckten Dokument und der elektronischen Ressource können nicht ausgeschlossen werden , Sprache der Zusammenfassung: Deutsch, Englisch
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  • 6
    Publication Date: 2023-09-28
    Description: Water parameters in the 2 years before spawning of F0 (08.02.2016-06.03.2018) and during larval and juvenile phase of F1: Larval period until 17.05.2018 (48 dph, 900 dd) and 01.06.2018 (63 dph, ~900 dd) for warm and cold life condition respectively, for the juveniles until 28.09.2018 (180 dph, ~4000 dd) and 12.02.2019 (319 dph, ~5100 dd) for warm and cold conditioned fish respectively. Means ± s.e. over all replicate tanks per condition. Temperature (Temp.), pH (free scale), salinity, oxygen and total alkalinity (TA) were measured weekly in F1 and monthly in F0; sea water (SW) measurements were conducted in 2017 and 2018. Water parameters during larval and early juvenile phase of F0: Larval period until (45 dph, 900 dd, 06.12.2013), early juveniles until 1.5 years. Means ± s.e.m. over all measurements per condition (triplicate tanks in larvae, single tanks in juveniles). Temperature (Temp.) and pH (NBS scale) were measured daily. pH (total scale), salinity, phosphate, silicate and total alkalinity (TA) were measured once at the beginning and once at the end of the larval phase and 9 times during juvenile phase; PCO2 was calculated with CO2sys; A–Ambient PCO2, D1000 –ambient + 1000 µatm CO2, L – Larvae, J – Juveniles.
    Keywords: Alkalinity, total; Alkalinity, total, standard error; Calculated; Calculated by CO2sys_xls_program (Lewis and Wallace, 2006); Carbon dioxide (water) partial pressure; DATE/TIME; Generation; juvenile growth; Laboratory experiment; larval growth; Life stage; Measured spectrophotometrically (Dickson et al., 2007) with purified m-cresol purple; metabolic rates; Multiprobe, WTW 340i; Ocean acidification; ocean warming; Oxygen, dissolved; Oxygen, dissolved, standard error; Partial pressure of carbon dioxide (water) at sea surface temperature (wet air), standard error; pH; pH, standard error; pH meter (WTW 3110) with electrode (WTW Sentix 41); Phosphate; Phosphate, standard error; Salinity; Salinity, standard error; Salinometer (WTW LF325, Xylem Analytics Germany, Weilheim, Germany); SEAL AA3 segmented flow autoanalyzer; Silicate; Silicate, standard error; teleost; Temperature, water; Temperature, water, standard error; Treatment; Type of study; WTW Oxi 340i probe
    Type: Dataset
    Format: text/tab-separated-values, 238 data points
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  • 7
    Publication Date: 2023-08-14
    Description: Ten female (mean 179 g wet mass (WM) and 25.3 cm standard length (SL) and ten male (182 g WM, 24.5 cm SL) Atlantic herring (Clupea harengus L.) were obtained from Kiel Bight (54°22'N, 010°09'E) and strip-spawned. Their offspring were subjected to feeding and growth experiments using different prey size spectra in controlled laboratory settings at different temperatures. In 4- (13°C) or 7-day (7°C) experiments, the effect of prey size on larval foraging behaviour, specific growth rate (SGR) and biochemical condition (RNA:DNA, RD) was tested. On a daily basis, the swimming behaviour and foraging activity of these larvae was recorded.
    Keywords: Acartia tonsa; Animalia; Baltic; Behaviour; Clupea harengus; Coast and continental shelf; DATE/TIME; Duration; Experiment; Experimental treatment; Experiment day; Feeding strikes; Frequency; Ichthyoplankton; Kiel_Bight_2007; Laboratory experiment; Nekton; Net; NET; Species; Temperature; Temperature, water; Type
    Type: Dataset
    Format: text/tab-separated-values, 2817 data points
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  • 8
    Publication Date: 2023-08-14
    Description: Ten female (mean 179 g wet mass (WM) and 25.3 cm standard length (SL) and ten male (182 g WM, 24.5 cm SL) Atlantic herring (Clupea harengus L.) were obtained from Kiel Bight (54°22'N, 010°09'E) and strip-spawned. Their offspring were subjected to feeding and growth experiments using different prey size spectra in controlled laboratory settings at different temperatures. In 4- (13°C) or 7-day (7°C) experiments, the effect of prey size on larval foraging behaviour, specific growth rate (SGR) and biochemical condition (RNA:DNA, RD) was tested. On a daily basis, the swimming behaviour and foraging activity of these larvae was recorded.
    Keywords: Acartia tonsa; Animalia; Baltic; Behaviour; Clupea harengus; Coast and continental shelf; Condition factor; DATE/TIME; DNA content per individual; Experiment; Experimental treatment; Ichthyoplankton; Kiel_Bight_2007; Laboratory experiment; Length, standard; Mass; Nekton; Net; NET; Prey, length; Ratio; Replicate; Residual value; Ribonucleic acid, content per individual; RNA/DNA ratio; Sample code/label; Species; Specific growth rate; Specific growth rate, per dry weight; Temperature; Temperature, water; Type
    Type: Dataset
    Format: text/tab-separated-values, 11747 data points
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  • 9
    Publication Date: 2023-08-14
    Description: Ten female (mean 179 g wet mass (WM) and 25.3 cm standard length (SL) and ten male (182 g WM, 24.5 cm SL) Atlantic herring (Clupea harengus L.) were obtained from Kiel Bight (54°22'N, 010°09'E) and strip-spawned. Their offspring were subjected to feeding and growth experiments using different prey size spectra in controlled laboratory settings at different temperatures. In 4- (13°C) or 7-day (7°C) experiments, the effect of prey size on larval foraging behaviour, specific growth rate (SGR) and biochemical condition (RNA:DNA, RD) was tested. On a daily basis, the swimming behaviour and foraging activity of these larvae was recorded.
    Keywords: Acartia tonsa; Animalia; Baltic; Behaviour; Clupea harengus; Coast and continental shelf; Ichthyoplankton; Laboratory experiment; Nekton; Temperature
    Type: Dataset
    Format: application/zip, 2 datasets
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  • 10
    Publication Date: 2023-09-28
    Description: Ongoing climate change is leading to warmer and more acidic oceans. The future distribution of fish within the oceans depends on their capacity to adapt to these new environments. Only few studies have examined the effects of ocean acidification (OA) and warming (OW) on the metabolism of long-lived fish over successive generations. We therefore aimed to investigate the effect of OA on larval and juvenile growth and metabolism on two successive generations of European sea bass (Dicentrarchus labrax L.) as well as the effect of OAW on larval and juvenile growth and metabolism of the second generation. European sea bass is a large economically important fish species with a long generation time. F0 larvae were produced at the aquaculture facility Aquastream (Ploemeur-Lorient, France) and obtained at 2 days post-hatch (dph). From 2 dph F0 larvae were reared in the laboratory in two PCO2 conditions (ambient and Δ1000). Larval rearing was performed in a temperature controlled room and water temperatures were fixed to 19°C in F0. In juveniles and adults, water temperatures of F0 sea bass were adjusted to ambient temperature in the Bay of Brest during summer (up to 19°C), but were kept constant at 15 and 12°C for juveniles and adults, respectively, when ambient temperature decreased below these values. F1 embryos were obtained by artificial reproduction of F0 broodstock fish. Fertilized eggs were incubated at 15°C and at the same PCO2 conditions as respective F0. Division of F1 larvae from egg rearing tanks into experimental tanks took place at 2 dph. F1 larvae were reared in four OAW conditions: two temperatures (cold and warm life condition, C and W) and two PCO2 conditions (ambient and Δ1000). Larval rearing was performed in a temperature controlled room and water temperatures were fixed to 15 and 20°C for C and W larvae, respectively. In juveniles, water temperatures of F1 sea bass were adjusted to ambient temperature in the Bay of Brest during summer (up to 19°C), but were kept constant at 15°C when ambient temperature decreased below these values. F1-W was always 5°C warmer than the F1-C treatment. OAW conditions for F0 and F1 rearing were chosen to follow the predictions of the IPCC for the next 130 years: ΔT = 5°C and ΔPCO2 = 1000 µatm, following RCP 8.5. We analysed larval and juvenile growth in F0 and F1. Larval routine metabolic rates (RMR, in F1), juvenile standard metabolic rates (SMR, in F0 and F1) and juvenile critical oxygen concentrations (PO2crit, in F0 and F1) were obtained on individuals via intermittent flow-respirometry. Measurements were conducted at the rearing conditions of the respective larva or juvenile. Fish were fasted for 3h and 48-72h for larvae and juveniles, respectively. After the respirometry trial, larvae were photographed to measure there body length and frozen until measurement of dry mass. Juveniles body length and wet mass was directly determined with calipers and a balance.
    Keywords: juvenile growth; Laboratory experiment; larval growth; metabolic rates; Ocean acidification; ocean warming; teleost
    Type: Dataset
    Format: application/zip, 3 datasets
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