Fat content in Black Sea sprat as an indicator of fish food supply and ecosystem condition

Shulman, Georgiy; Nikolsky, V. N.; Yuneva, Tatyana V.; Minyuk, G. S.; Shchepkin, V. Ya.; Щепкина, А. М.; Ivleva, Elena V.; Yunev, Oleg A.; Dobrovolov, I.; Bingel, Ferit; Kıdeyş, Ahmet E.

doi:10.3354/meps293201

Cited by 26 publications

(25 citation statements)

References 22 publications

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“…The match between the reproductive and feeding season may have also led to insignificant relationships between the muscle lipid reserves and the gonad lipid reserves of red mullet, since energy invested in egg production will be obtained directly from feeding instead of the muscle. The negative correlation between the concentrations of water and lipid in the muscle of red mullet is well known for other fish species (Shulman and Love, 1999;Shulman et al, 2005), and water content in the muscle may be thus used in the future as a proxy of lipid content if red mullet condition has to be monitored regularly.…”

Section: Discussionmentioning

confidence: 91%

“…The fat content of fishes can be affected by habitat characteristics such as bottom or biotope type and food supply, and thus possesses great potential as a 'marker' of habitat quality and feeding conditions in marine (see e.g. Lloret and Planes, 2003;Shulman et al, 2005;Levi et al, 2005;Lloret et al, 2002Lloret et al, , 2005 and freshwater (see e.g. Clemens and Stevens, 2003;Pothoven et al, 2006) ecosystems.…”

Section: Introductionmentioning

confidence: 99%

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Lipid reserves of red mullet (<i>Mullus barbatus</i>) during pre-spawning in the northwestern Mediterranean

Lloret¹,

Demestre²,

Sánchez-Pardo³

2007

Sci. Mar.

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SUMMARY: Lipid reserves are a particularly important attribute of fishes because they have a large influence on growth, reproduction and survival. This study analyses the lipid content of red mullet (Mullus barbatus) pre-spawners in three different areas of the northwestern Mediterranean in relation to trawling activities and river runoff. The muscle lipid was considered as an indicator of the somatic condition of individuals whilst the gonad lipid was used as a proxy of the energy invested in reproduction. The results show that fish with the highest muscle lipid levels inhabited the area where fishing impact was lowest. Since the abundance and biomass of polychaetes, which represent the main food source for red mullet, were found to be lower in trawled zones than in unfished ones, we suggest that differences in the muscle lipid levels between areas might be attributed to variation in prey abundance in relation to fishing impact. However, no impact of river runoff on lipid reserves of red mullet was observed. The results also show that muscle and gonad lipid reserves are not related to each other during pre-spawning.Keywords: ecological physiology, polychaetes, fishing, river runoff, maerl beds. RESUMEN: RESERVAS LIPIDICAS DEL SALMONETE DE FANGO (MULLUS BARBATUS)DURANTE LA PREPUESTA EN EL MEDITERRÀNEO NOROCCIDENTAL. -Las reservas lipídicas constituyen un importante atributo de los peces porque juegan un papel destacado en su crecimiento, reproducción y supervivencia. Este estudio analiza las reservas lipídicas del salmonete de fango (Mullus barbatus) durante la prepuesta en tres áreas diferentes del Mediterráneo noroccidental en relación a la actividad pesquera y las descargas fluviales. Se ha considerado el contenido lipídico en el músculo y en la gónada como indicadores de la condición somática y de la energía invertida en la reproducción de los individuos respectivamente. Los resultados muestran cómo los peces con una cantidad mayor de lípidos en el músculo habitan el área donde el impacto pesquero es menor. Puesto que la abundancia y la biomasa de poliquetos, que constituyen la principal fuente de alimento del salmonete de fango, son inferiores en las zonas afectadas por el arrastre que en las zonas donde no se practica este tipo de pesca, se sugiere que las diferencias en la cantidad de lípidos en el músculo entre las distintas áreas podrían atribuirse a las diferencias en la abundancia de presas, lo cual podría guardar relación con la actividad pesquera. Sin embargo, no se observa impacto alguno de las descargas fluviales sobre las reservas de lípidos del salmonete de fango. Los resultados también muestran cómo los contenidos lipídicos en el músculo y en la gónada de los ejemplares no están relacionados entre sí durante la prepuesta de la especie.Palabras clave: ecofisiología, poliquetos, pesquerías, descargas fluviales, fondos de maerl.

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Section: Discussionmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Lipid reserves of red mullet (<i>Mullus barbatus</i>) during pre-spawning in the northwestern Mediterranean

Lloret¹,

Demestre²,

Sánchez-Pardo³

2007

Sci. Mar.

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“…Worm & Myers 2003, Bailey et al 2006, mid-latitude coastal fisheries appear to be controlled by phytoplankton production (Ware & Thomson 2005, Frank et al 2006). Yet, the marked variability in the condition of these exploited fish populations appears to be fuelled by current management practices based on abundance, biomass, or landings (Hsieh et al 2006), but which ignore climate regime shifts and oceanographic variability (Chavez et al 2003), food supply to adult fishes (Shulman & Love 1999, Shulman et al 2005) and their energy condition (Dutil & Lambert 2000).…”

Section: Abstract: Sardina Pilchardus · Sardines · Proximate Composimentioning

confidence: 99%

Bioenergetics of small pelagic fishes in upwelling systems: relationship between fish condition, coastal ecosystem dynamics and fisheries

Rosa¹,

González²,

Broitman³

et al. 2010

Mar. Ecol. Prog. Ser.

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“…For example, seasonal lipid dynamics of herring and sprat in the Baltic Sea have been related to local feeding conditions and inter-specific differences in diets and reproductive strategies (Røjbek et al 2014). Furthermore, long-term, interannual (1960Furthermore, long-term, interannual ( to 2001 changes in sprat lipid content (% body fat) in the Black Sea were correlated with stock biomass and phytoplankton biomass (Shulman et al 2005), de monstrating the potential for total lipid content to be used as an indicator for stock assessments and local feeding conditions.…”

Section: Introductionmentioning

confidence: 99%

Temporal and inter-specific variations in forage fish feeding conditions in the NW Mediterranean: lipid content and fatty acid compositional changes

Pethybridge¹,

Bodin²,

Arsenault-Pernet³

et al. 2014

Mar. Ecol. Prog. Ser.

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We describe the total lipid content, lipid class composition and fatty acid profiles of adult forage fishes (anchovy, sardine and sprat) sampled in the NW Mediterranean Sea in 2010 and 2011. Inter-and intra-species differences were mostly related to sampling period with limited effect of gender or total length. As an assemblage, total lipid content and relative levels of triacylglycerols and fatty acids 16:1n7, 20:5n3 and 14:0 in forage fish were highest in summer and autumn, indicating better feeding conditions and a more pronounced diatom-supported food web. In contrast, total lipid content was lowest at the end of winter and spring, and coincided with high levels of 22:6n3, indicating a more herbivorous diet based on dinoflagellates. Resource partitioning and niche separation, as inferred from fatty acid profiles, were apparent between species. Sardine showed a more diverse, temporally separated feeding strategy than anchovy, and dietary overlap was higher in winter than summer with sardine having higher markers of copepods, 22:1n11 and 20:1n9. Sprat collected in winter occupied a separate niche area to both sardine and anchovy with higher total lipid content and carnivory biomarker 18:1n9. Our results show that the lipid dynamics of forage fishes can be used to gain quantitative insights into sub-system level changes in species interactions, including prey and predator productivity.

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Fat content in Black Sea sprat as an indicator of fish food supply and ecosystem condition

Cited by 26 publications

References 22 publications

Lipid reserves of red mullet (<i>Mullus barbatus</i>) during pre-spawning in the northwestern Mediterranean

Lipid reserves of red mullet (<i>Mullus barbatus</i>) during pre-spawning in the northwestern Mediterranean

Bioenergetics of small pelagic fishes in upwelling systems: relationship between fish condition, coastal ecosystem dynamics and fisheries

Temporal and inter-specific variations in forage fish feeding conditions in the NW Mediterranean: lipid content and fatty acid compositional changes

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