Plaice eggs (Pleuronectes platessa L.) in the southern North Sea: abundance, spawning area, vertical distribution, and buoyancy

Coombs, S. H.; Nichols, James Hastings; Fosh, C. A.

doi:10.1093/icesjms/47.2.133

Cited by 35 publications

(26 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…We used a 1-m column of water with a stable, constant gradient of seawater salt. Glass spheres of a known density were used to calibrate the system (Coombs et al 1985(Coombs et al , 1990. Fertilized, live eggs were introduced at the top of the column and allowed to settle to the location where the egg was in hydrostatic equilibrium with the surrounding fluid.…”

Section: Egg Buoyancy Through Embryonic Development (Objective No 3)mentioning

confidence: 99%

Reproductive output traits of the simultaneous hermaphrodite <I>Serranus scriba</I> in the western Mediterranean

Alós¹,

Alonso‐Fernández²,

Catalán³

et al. 2013

Sci. Mar.

View full text Add to dashboard Cite

SUMMARY:We studied multiple individual parameters that affect the reproductive output in the painted comber Serranus scriba, a simultaneous hermaphroditic fish that is widely exploited by recreational fishing in temperate marine coastal regions. Batch fecundity was significantly affected by maternal size, but was not related to maternal age or condition. However, egg quality as estimated by egg dry weight was significantly influenced by the interaction effect of maternal size and age. An empirical assessment demonstrated the existence of a diel spawning pattern based on a daily release of a partial fraction of eggs related to sunset time. Buoyancy varied during the incubation period, but it consistently resulted in positive buoyancy that situated the eggs near the top of the water column. This study represents the first estimation of reproductive output of the simultaneous hermaphrodites S. scriba and also provides a comprehensive study about the potential maternal factors that affect egg production. These results are a crucial step towards ongoing efforts to improve the stock assessment of this species.Keywords: batch fecundity, egg buoyancy, egg quality, maternal effects, Mediterranean, Serranus scriba. RESUMEN: CaraCterístiCas del rendimiento reproduCtivo del hermafrodita simultáneo SerranuS Scriba en el mediterráneo oCCidental (islas Baleares). -Se estudiaron varios parámetros individuales que afectan el éxito reproductivo de la especie Serranus scriba, un pez hermafrodita simultáneo que es intensamente explotado por la pesca recreativa en regiones costeras de aguas templadas. La fecundidad parcial está significativamente relacionada con el tamaño de los individuos; pero no se encontró relación con la edad o condición. Sin embargo, la calidad de los huevos (estimada a partir del peso seco) resultó significativamente influenciada por la interacción del tamaño y edad de los individuos. Se demostró empíricamente la existencia de un patrón de desove diario, basado en la puesta diaria de una fracción de los huevos del total con anterioridad a la puesta del sol. La flotabilidad de los huevos varió durante el período de incubación; pero presentando de forma consistente una flotabilidad positiva que sitúa a los huevos liberados cerca de la parte más superficial de la columna de agua. Este estudio representa la primera estimación de los parámetros reproductivos relacionados con la producción de huevos en el hermafrodita simultáneo Serranus scriba. Proporciona además un detallado estudio sobre los posibles factores parentales que afectan a la producción de huevos en esta especie. Estos resultados son un paso fundamental para los esfuerzos en curso para mejorar la evaluación y gestión de las poblaciones de Serranus scriba.Palabras clave: fecundidad parcial, flotabilidad de los huevos, calidad del huevo, efectos parentales, Mediterráneo, Serranus scriba. Scientia Marina 77(2)

show abstract

Section: Egg Buoyancy Through Embryonic Development (Objective No 3)mentioning

confidence: 99%

Reproductive output traits of the simultaneous hermaphrodite <I>Serranus scriba</I> in the western Mediterranean

Alós¹,

Alonso‐Fernández²,

Catalán³

et al. 2013

Sci. Mar.

View full text Add to dashboard Cite

show abstract

“…The top 9 water layers of the hydrodynamic model were aggregated in the transport model. Justification for this is that vertical mixing in the southern North Sea is high and eggs are found throughout the water column, despite their positive buoyancy (Coombs et al 1990, Sundby 1991.Stage 2: Passive pelagic transport of larvae as in Stage 1. The distinction between eggs and pelagic larvae was made to facilitate growth parameter setting and testing.…”

mentioning

confidence: 99%

Variability in transport of fish eggs and larvae. III. Effects of hydrodynamics and larval behaviour on recruitment in plaice

Bolle

Dickey‐Collas²,

Beek³

et al. 2009

Mar. Ecol. Prog. Ser.

109

View full text Add to dashboard Cite

Transport of plaice eggs and larvae in the southern North Sea was modelled using a finite-volume advection-dispersion model with high spatial and temporal resolution. Hydrodynamic forcing was based on actual river discharge and meteorological data for a 7 mo period in the winter and spring of 1989 and 1996 to 2003. Egg and larval development was linked to temperature and each developmental stage had its own physical and behavioural properties. Two hypotheses on transport mechanisms in the late larval stages were compared: passive drift versus selective tidal stream transport (triggered by environmental cues). Modelled larval stage durations closely corresponded to empirical estimates based on otolith daily ring counts. Close correspondence was also observed between model results and survey data on settlement in the western Wadden Sea, especially for the abundance of the strong 1996 year-class and the early settlement of the 2002 year-class. Transport patterns and the proportion of larvae reaching inshore nurseries varied substantially between years. Recruitment was negatively correlated with the distance over which eggs and larvae were transported, probably because of a breakdown in connectivity between spawning and nursery areas with increased transport rates. In conclusion, meteorologically driven variability in the hydrodynamics of the southern North Sea greatly affects the transport patterns of plaice eggs and larvae and may play an important role in determining recruitment variability and spatial connectivity. KEY WORDS: Biophysical model · Hydrodynamic transport · Larval behaviour · Interannual variability · Connectivity · Recruitment · Pleuronectes platessa · North SeaResale or republication not permitted without written consent of the publisher Mar Ecol Prog Ser 390: 195-211, 2009 important nursery area for North Sea plaice (Zijlstra 1972), density-dependent mortality only fine-tunes recruitment variability, and the main factors driving variations in recruitment occur prior to the juvenile life-phase (van der Veer 1986, van der Veer et al. 2000.Several hypotheses have been postulated on the factors causing recruitment variability during the egg and larval stages. Cold winters often produce strong yearclasses (van der Veer & Witte 1999, Fox et al. 2000, and low egg mortality is associated with low seawater temperatures (Harding et al. 1978, Dickey-Collas et al. 2003. These low temperatures may also reduce larval mortality due to lower predator activity or to an improved match between the production cycles of larvae and their food (Cushing 1972, Leggett & Deblois 1994; however, this may be offset by slower development of the larvae (Pepin 1991). Finally, variations in transport of larvae to coastal nursery grounds may contribute to variations in recruitment success (Nielsen et al. 1998, van der Veer et al. 1998.In the present study we examined interannual variability in plaice egg and larval transport in the southern North Sea. We focused on the role of transport in determining recruitment var...

show abstract

“…For modelling of the transport of flatfish larvae (plaice and sole), these communication files were first vertically aggregated to 2 layers (representing the lower 4% and upper 96% of the water depth), justified by the fact that vertical mixing in the southern North Sea is high and flatfish eggs and larvae are found throughout the water column (Coombs et al 1990, Sundby 1991, despite the positive buoyancy of eggs and potential vertical migrations of larvae. Horizontal aggregation of grid resolution was not applied in any of the model runs.…”

Section: Methodsmentioning

confidence: 99%

Variability in transport of fish eggs and larvae. I. Modelling the effects of coastal reclamation

Erftemeijer¹,

Beek²,

Bolle³

et al. 2009

Mar. Ecol. Prog. Ser.

View full text Add to dashboard Cite

Dispersal of eggs and larvae of herring, plaice and sole in the southern North Sea was studied by modelling using real-time hydrodynamic forcing (with wind, air pressure and river discharge) and species-specific knowledge of larval behaviour (incorporating salinity triggers), temperature-dependent growth and spawning characteristics. Larval transport was simulated using a finitevolume advection-diffusion model (Delft3D-WAQ) coupled to a 3-dimensional hydrodynamic model (Delft3D-FLOW). Model parameter settings were refined following a sensitivity analysis. Validation of modelled hydrodynamics and larval distribution patterns showed broad agreement with field data. Differences in model results for larval distribution, transport success and timing of arrival at nursery grounds between baseline conditions and a scenario that incorporated a proposed 1000 ha coastal reclamation (protruding 6 to 7 km from the Dutch coastline) for the expansion of the Port of Rotterdam (Maasvlakte-2) were insignificant in comparison to the interannual variability in larval dispersal for these species. Results suggest that effects of the proposed coastal reclamation on the transport success of fish larvae (flatfish and herring), an issue over which public stakeholders had expressed concern, will be negligible.

show abstract

Plaice eggs (Pleuronectes platessa L.) in the southern North Sea: abundance, spawning area, vertical distribution, and buoyancy

Cited by 35 publications

References 0 publications

Reproductive output traits of the simultaneous hermaphrodite <I>Serranus scriba</I> in the western Mediterranean

Reproductive output traits of the simultaneous hermaphrodite <I>Serranus scriba</I> in the western Mediterranean

Variability in transport of fish eggs and larvae. III. Effects of hydrodynamics and larval behaviour on recruitment in plaice

Variability in transport of fish eggs and larvae. I. Modelling the effects of coastal reclamation

Contact Info

Product

Resources

About