Spawning site fidelity in Baltic Sea turbot (Psetta maxima)

Florin, Ann‐Britt; Franzén, Fredrik

doi:10.1016/j.fishres.2009.12.002

Cited by 19 publications

(14 citation statements)

References 22 publications

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“…Besides the bloom development of dinoflagellates with potential toxic effects in the nitrogen amended treatments, pH may also have caused the fish larvae to disappear. Turbot spawn at shallow waters close to the coast in early spring with simultaneous timing to the spring phytoplankton bloom (Florin & Franzén ) where pH may fluctuate daily (Duarte, Hendriks, Moore, Olsen, Steckbauer, Ramajo, Carstensen, Trotter & McCulloch ) and even pH values similar to this study are reported for high productive shallow estuaries (Hansen ). There are, however, to our knowledge no reports per se on the effect of extreme pH values on survival of turbot larvae and fry in the literature, neither in situ nor in culture.…”

Section: Discussionsupporting

confidence: 80%

Inorganic nitrogen addition in a semi-intensive turbot larval aquaculture system: effects on phytoplankton and zooplankton composition

et al. 2015

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A nitrogen manipulation experiment was conducted in a semi‐intensive outdoor system where turbot larvae feed on copepods. Nitrogen addition is hypothesized to stimulate a cascade reaction increasing phytoplankton biomass, copepods’ productivity and larval fish survival. Triplicates were established for three treatments: a control with no additional nitrogen, a pulsed dose where nitrogen was added in three doses over time and a full dose where all nitrogen, equal to the total of the pulse dose treatment, was added initially. In the control, chlorophyll a averaged 3.3 ± 1.5 μg L−1 and phytoplankton was dominated by diatoms, while the pulsed and full dose treatments showed chlorophyll a at 28.6 ± 9.9 and 47.7 ± 10.0 μg L−1, respectively, with dinoflagellates as the main phytoplankton group. Due to photosynthesis, pH increased >9 in both the nitrogen treatments compared to the control (8.5). Potential toxic dinoflagellates, including Alexandrium pseudogonyaulax and Prorocentrum spp., became dominant in the nitrogen treatments and might have arrested zooplankton recruitment. Laboratory experiments with a toxic strain of A. pseudogonyaulax proved that Acartia tonsa reproduction and naupliar survival were affected negatively at realistic fish tank concentrations of 100 and 20 cells mL−1, respectively. Compared to the control, pulsed and full dose treatments reached higher copepod biomass and showed a shift over time in species composition from Centropages hamatus to Acartia spp. However, high pH levels and dinoflagellate blooms had a negative effect on larval fish survival, suggesting management improvements on water quality and separation between copepods and fish production tanks.

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Section: Discussionsupporting

confidence: 80%

Inorganic nitrogen addition in a semi-intensive turbot larval aquaculture system: effects on phytoplankton and zooplankton composition

et al. 2015

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“…, is comparable to diffusion rates estimated for other flatfish species such as Baltic Sea turbot Psetta maxima (Florin & Franzén 2010) and winter flounder Pseudopleuronectes ameri canus (Saila 1961) based on results derived from conventional tag recaptures. Therefore, random movement appears to be another common behavior of Pleuronectiformes species, likely as a foraging tactic.…”

Section: Individual Dispersal Patternssupporting

confidence: 77%

Characterizing Pacific halibut movement and habitat in a Marine Protected Area using net squared displacement analysis methods

Nielsen¹,

Hooge²,

Taggart³

et al. 2014

Mar. Ecol. Prog. Ser.

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We characterized small-scale movement patterns and habitat of acoustic-tagged adult (68 to 220 cm total length) female Pacific halibut during summer and fall in Glacier Bay National Park, Alaska, a marine protected area (MPA). We used net squared displacement analysis methods to identify 2 movement states, characterize individual dispersal patterns, and relate habitat variables to movement scales. Movement states identified for 32 of 43 halibut consisted of (1) a non-dispersive 'residential' movement state (n = 27 fish), where movement was restricted to an average movement radius of 401.3 m (95% CI 312.2−515.9 m) over a median observation period of 58 d, and (2) a 'dispersive' movement state (n = 15 fish), where movements of up to 18 km occurred over a median observation period of 27 d. Some fish (n = 10) exhibited both movement states. Individual fish demonstrated primarily non-random dispersal patterns including home range (n = 17), site fidelity (return to previously occupied locations following forays, n = 6), and shifted home ranges (n = 5). However, we also observed a random dispersal pattern (n = 4) with an estimated mean ± SE diffusion rate of 0.9 ± 0.05 km 2 d −1. Home range size increased with depth but not fish size. Home range locations were associated with heterogeneous habitat, intermediate tidal velocities, and depths <100 m. Observations of non-dispersive movement patterns, relatively small home ranges, and site fidelity for adult females suggest that MPAs such as Glacier Bay may have utility for conservation of Pacific halibut broodstock.

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“…Despite the overall high genetic homogeneity recorded for turbot, strong site fidelity to the spawning sites and limited dispersal of adults during the reproduction period have been documented in the Baltic Sea (Florin & Franzén, 2010), suggesting that geographical segregation, even within continuous areas, might occur. Additionally, evidence suggestive of adaptation to temperature and salinity at a regional level has been reported (Vandamme et al., 2014; Vilas et al., 2015).…”

Section: Introductionmentioning

confidence: 99%

Parallel evolution and adaptation to environmental factors in a marine flatfish: Implications for fisheries and aquaculture management of the turbot (Scophthalmus maximus)

Prado

Vera

Hermida

et al. 2018

Evolutionary Applications

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Unraveling adaptive genetic variation represents, in addition to the estimate of population demographic parameters, a cornerstone for the management of aquatic natural living resources, which, in turn, represent the raw material for breeding programs. The turbot (Scophthalmus maximus) is a marine flatfish of high commercial value living on the European continental shelf. While wild populations are declining, aquaculture is flourishing in southern Europe. We evaluated the genetic structure of turbot throughout its natural distribution range (672 individuals; 20 populations) by analyzing allele frequency data from 755 single nucleotide polymorphism discovered and genotyped by double‐digest RAD sequencing. The species was structured into four main regions: Baltic Sea, Atlantic Ocean, Adriatic Sea, and Black Sea, with subtle differentiation apparent at the distribution margins of the Atlantic region. Genetic diversity and effective population size estimates were highest in the Atlantic populations, the area of greatest occurrence, while turbot from other regions showed lower levels, reflecting geographical isolation and reduced abundance. Divergent selection was detected within and between the Atlantic Ocean and Baltic Sea regions, and also when comparing these two regions with the Black Sea. Evidence of parallel evolution was detected between the two low salinity regions, the Baltic and Black seas. Correlation between genetic and environmental variation indicated that temperature and salinity were probably the main environmental drivers of selection. Mining around the four genomic regions consistently inferred to be under selection identified candidate genes related to osmoregulation, growth, and resistance to diseases. The new insights are useful for the management of turbot fisheries and aquaculture by providing the baseline for evaluating the consequences of turbot releases from restocking and farming.

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Spawning site fidelity in Baltic Sea turbot (Psetta maxima)

Cited by 19 publications

References 22 publications

Inorganic nitrogen addition in a semi-intensive turbot larval aquaculture system: effects on phytoplankton and zooplankton composition

Inorganic nitrogen addition in a semi-intensive turbot larval aquaculture system: effects on phytoplankton and zooplankton composition

Characterizing Pacific halibut movement and habitat in a Marine Protected Area using net squared displacement analysis methods

Parallel evolution and adaptation to environmental factors in a marine flatfish: Implications for fisheries and aquaculture management of the turbot (Scophthalmus maximus)

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