Development of mussel (Mytilus galloprovincialis) seed from two different origins in a semi-enclosed Mediterranean Bay (N.E. Spain)

Ramón, Montserrat; Fernández, María Dolores; Galimany, Eve

doi:10.1016/j.aquaculture.2006.11.014

Cited by 48 publications

(51 citation statements)

References 30 publications

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“…Generally, thermal oscillation is high, and water renewal periods are about 1-2 days in Fangar bay and 10 days in Alfacs bay (Camp and Delgado, 1987). The critical temperature values reached during summer in the bays of the Ebro Delta affect growth and survival dynamics of bivalve molluscs (Ramón et al, 2007). Furthermore, heavy rainfall and discharges from the Ebro river and nearby rice-growing areas substantially increase the input of fresh water into the bay and, consequently, affect salinity levels (Fernández and Diogène, 2008).…”

Section: Introductionmentioning

confidence: 99%

Growth of <i>Octopus vulgaris</i> (Cuvier, 1797) in tanks in the Ebro Delta (NE Spain): effects of temperature, salinity and culture density

Delgado¹,

Gairín²,

Carbó³

et al. 2010

Sci. Mar.

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SUMMARY: To assess the possibility of O. vulgaris ongrowing using tanks or cages in the bays of the Ebro Delta, we performed several growth trials of common octopus held in tanks. Effects of environmental factors (temperature and salinity) and zootechnical aspects (culture density) were studied. The thermal ranges that defined positive growth periods in the bays of the Ebro Delta were 19.5ºC to 23ºC (spring-summer) and 23.5ºC to 12.3ºC (autumn-winter), the latter being the most suitable period for ongrowing. Salinity did not affect survival (100%) or growth within the range tested (34-29 psu), though feeding rates (AFR, SFR) were directly related to salinity. On the other hand, after 60 days, final culture density increased three-fold (D1: 12.36 → 44.37 kg m -3 ; D2: 24.13 → 67.76 kg m -3 ), with optimal survival results (>90%) for the two densities tested. Growth and feeding rates showed a slight inverse relationship with density. Finally, growth and feeding rates showed a clear dependence on temperature in the two experiments (density and salinity). Our results conclude that industrial production of O. vulgaris in tanks is promising: this system offers an alternative to cages and allows for a more exhaustive control of culture.Keywords: Octopus vulgaris, growth, ongrowing, temperature, salinity, culture density. (Cuvier, 1797) en tanque en el Delta del Ebro (NE España): Efectos de la temperatura, salinidad y densidad de cultivo. -Con el fin de evaluar la posibilidad de engorde de O. vulgaris en tanques o jaulas en las bahías del Delta del Ebro, se llevaron a cabo varias experiencias de crecimiento de individuos mantenidos en tanques. Se estudiaron tanto aspectos medioambientales (temperatura y salinidad) como zootécnicos (densidad de cultivo). Los rangos térmicos que definieron periodos positivos de crecimiento en las bahías del Delta del Ebro fueron: 19.5ºC-23ºC (primavera-verano) y 23.5ºC-12.3ºC (otoño-invierno), siendo este último el periodo más favorable para el engorde. La salinidad no afectó a la supervivencia o al crecimiento dentro del rango testado (34-29 psu), a pesar de que las tasas de alimentación (AFR, SFR) mantuviesen relación directa con la salinidad. Por otro lado, y transcurridos 60 días, observamos que la densidad de cultivo se multiplicó por tres (D1: 12.36 → 44.37 kg m -3 ; D2: 24.13 → 67.76 kg m -3 ), con resultados óptimos de supervivencia (>90%) bajo las dos condiciones probadas. Las tasas de crecimiento y alimentación mostraron una relación indirecta con la densidad de cultivo. Finalmente, se observó que tanto las tasas de crecimiento como las de alimentación presentan una clara dependencia de la temperatura en ambas experiencias (salinidad y densidad de cultivo). Nuestros resultados concluyen que la producción industrial de O. vulgaris en tanques es prometedora: este sistema ofrece una alternativa a las cajas y permite un control más exhaustivo del cultivo. RESUMEN: Crecimiento de OctOpus vulgaris

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Section: Introductionmentioning

confidence: 99%

Growth of <i>Octopus vulgaris</i> (Cuvier, 1797) in tanks in the Ebro Delta (NE Spain): effects of temperature, salinity and culture density

Delgado¹,

Gairín²,

Carbó³

et al. 2010

Sci. Mar.

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show abstract

“…The maps in Figures 6A,C,E interested by such anomalies is present at very shallow depths in the Balearic Sea not far from the location where Ramón et al (2007) observed mussels mortality. This same area includes the Balearic Islands where Marbà and Duarte (2010) observed P. oceanica mortality.…”

Section: Events With Temperature Exceeding 28 • C In Nw Mediterraneanmentioning

confidence: 99%

“…In summer 2003 total mortality of mussels from a semienclosed bay in north eastern Spain was observed when seawater temperature reached 28 • C for a period of 2 weeks, this being the first time that total mortality was observed at this site since mussel cultivation started in 1930 (Ramón et al, 2007). Gazeau et al (2014) performed a long term warming experiment (with temperature reflecting natural variation with a + 3 • C offset) on M. galloprovincialis from the same area and also observed total mortality of the sample within few weeks when water temperature reached 28 • C.…”

Section: Case Study 2 Hazard Layer For the Thermal Threshold Of 28 • Cmentioning

confidence: 99%

“…Temperature values around 28 • C were found to be lethal for infralittoral species, such as mussels (Ramón et al, 2007) and seagrass (Marbà and Duarte, 2010) in the Western Mediterranean upon moderate to prolonged duration exposure. By comparison the same temperature values (27-28 • C) causes mortality in just a few days in circalittoral species (e.g., Torrents et al, 2008;Crisci et al, 2011).…”

Section: Case Study 2 Hazard Layer For the Thermal Threshold Of 28 • Cmentioning

confidence: 99%

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Marine Heat Waves Hazard 3D Maps and the Risk for Low Motility Organisms in a Warming Mediterranean Sea

2017

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Frequency and severity of heat waves is expected to increase as a consequence of climate change with important impacts on human and ecosystems health. However, while many studies explored the projected occurrence of hot extremes on terrestrial systems, few studies dealt with marine systems, so that both the expected change in marine heat waves occurrence and the effects on marine organisms and ecosystems remain less understood and surprisingly poorly quantified. Here we: (i) assess how much more frequent, severe, and depth-penetrating marine heat waves will be in the Mediterranean area in the next decades by post-processing the output of an ocean general circulation model; and (ii) show that heat waves increase will impact on many species that live in shallow waters and have reduced motility, and related economic activities. This information is made available also as a dataset of temperature threshold exceedance indexes that can be used in combination with biological information to produce risk assessment maps for target species or biomes across the whole Mediterranean Sea. As case studies we compared projected heat waves occurrence with thermotolerance thresholds of low motility organisms. Results suggest a deepening of the survival horizon for red coral (Corallium rubrum, a commercially exploited benthic species already subjected to heat-related mass mortality events) and coralligenous reefs as well as a reduction of suitable farming sites for the mussel Mythilus galloprovincialis. In recent years Mediterranean circalittoral ecosystems (coralligenous) have been severely and repeatedly impacted by marine heat waves. Our results support that equally deleterious events are expected in the near future also for other ecologically important habitats (e.g., seagrass meadows) and aquaculture activities (bivalvae), and point at the need for mitigation strategies.

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“…As such, two embayments of the Ebro Delta undergo long-term routine monitoring to ensure seafood safety for the major Catalonian shellfish cultivation zones. In Alfacs and Fangar bays, the Mediterranean mussel Mytilus galloprovincialis is cultured on wooden fixed constructions (Ramó n et al, 2007). Due to harvest closures dictated by the detection of toxins above the regulatory limit in shellfish flesh or the mere presence of toxic species above critical cell abundances, the aquaculture industry faces financial penalties.…”

mentioning

confidence: 99%

Toxigenic algae and associated phycotoxins in two coastal embayments in the Ebro Delta (NW Mediterranean)

et al. 2016

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Development of mussel (Mytilus galloprovincialis) seed from two different origins in a semi-enclosed Mediterranean Bay (N.E. Spain)

Cited by 48 publications

References 30 publications

Growth of <i>Octopus vulgaris</i> (Cuvier, 1797) in tanks in the Ebro Delta (NE Spain): effects of temperature, salinity and culture density

Growth of <i>Octopus vulgaris</i> (Cuvier, 1797) in tanks in the Ebro Delta (NE Spain): effects of temperature, salinity and culture density

Marine Heat Waves Hazard 3D Maps and the Risk for Low Motility Organisms in a Warming Mediterranean Sea

Toxigenic algae and associated phycotoxins in two coastal embayments in the Ebro Delta (NW Mediterranean)

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