Influence of intermittent-upwelling on Mytilus galloprovincialis settlement patterns in the Ría de Ares-Betanzos

Peteiro, Laura G.; Labarta, Uxío; Fernández‐Reiriz, María José; Álvarez‐Salgado, Xosé Antón; Filgueira, Ramón; Piedracoba, Sílvia

doi:10.3354/meps09433

Cited by 27 publications

(42 citation statements)

References 67 publications

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“…This study confirmed that mussels in suspended culture experienced the greatest growth rates during the spring–summer period, coinciding with the upwelling months, when filter feeders have access to high quality food due to increased production of phytoplankton (Figueiras, Labarta & Fernández‐Reiriz ; Peteiro, Labarta, Fernández‐Reiriz, Álvarez‐Salgado, Filgueira & Piedracoba ). Concurrently, decreases in food availability and organic content of the seston observed during the beginning of the downwelling season in late summer and autumn were reflected in a reduction in the bivalves' growth rates.…”

Section: Discussionsupporting

confidence: 75%

“…Reductions in CI levels found in April, July and September might correspond with the spawning events recorded between spring and early autumn by Peteiro et al . () in the Ría Ares‐Betanzos. The major settlement peak of this study (August–September) also agreed with the results of Peteiro et al .…”

Section: Discussionmentioning

confidence: 99%

“…The major settlement peak of this study (August–September) also agreed with the results of Peteiro et al . (), where settlement was concentrated within the favourable upwelling season. Villalba () described that mussels from the northern Rías (i.e.…”

Section: Discussionmentioning

confidence: 99%

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Growth variations within a farm of mussel (Mytilus galloprovincialis) held near fish cages: importance for the implementation of integrated aquaculture

et al. 2013

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Fish farming releases extensive amounts of particulate organic waste that can be exploited by bivalves in integrated culture. We tested if mussels Mytilus galloprovincialis cultured at two depths (1 and 6 m) in a raft, moored 170 m from a fish farm had greater growth than bivalves held 550 m from the fish cages. Mussel growth was monitored monthly, covering the second phase of the culture, from thinning-out to harvest (March to November 2011). We also studied if fish solid and dissolved nutrients increased the organic content of the seston and chlorophyll-a levels near the fish cages through weekly samples. Results showed no differences in seston, chlorophyll and physiochemical characteristics of the water among rafts. Maximum growth and Condition Index (CI) occurred during springsummer (April-August), when mussels had access to greater food quality and quantity. Mussels cultivated close to the cages showed similar shell length, weight and CI compared with mussels distant from the fish farm. Average shell length, meat dry weight and CI at harvest were 76.31 mm, 2.51 g and 23%. Bivalves cultured distant from the fish cages displayed 26% higher biomass than the other raft at the end of the experiment. Differences in biomass were explained by the significantly higher recruitment of mussel seed observed at the raft distant from the fish cages from June to November. The lack of a significant enhancement in growth of the bivalves cultured next to finfish is discussed.

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Section: Discussionsupporting

confidence: 75%

Section: Discussionmentioning

confidence: 99%

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Growth variations within a farm of mussel (Mytilus galloprovincialis) held near fish cages: importance for the implementation of integrated aquaculture

et al. 2013

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“…The present study showed that mussels in both cultures experienced dissimilar growth rates over the experimental period coinciding probably with periods, when filter feeders respond to the abundance of food available due to increased production of phytoplankton (Figueiras, Labarta & Fernandez‐Reiriz, ; Peteiro et al., ). Although this area benefits from year‐round upwelling characterized by a weak seasonality (Arístegui et al., ), the high productivity often results from alternating upwelling events and relatively calm periods (Huntsman & Barber, ).…”

Section: Discussionsupporting

confidence: 51%

Differential growth of the brown mussel,Perna perna(Linnaeus, 1758), in longline and pole cultures in Dakhla Bay (SWMorocco, Atlantic Ocean)

Chattou

Abounahel²,

Kassila³

et al. 2018

Aquac Res

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There is a great interest in establishing mussel farming in Dakhla bay. Selection of suitable sites is more meaningful only if a reliable culture method at proposed site is included. We compared two different culture methods, longline and pole, over 1 year (June 2016 to June 2017). Growth indicators for Perna perna (size and weight growth rates, frequency distributions and estimating growth curves) were analysed from seeding to harvest. The results highlighted the influence of culture method on growth rates of mussels (p < 0.05). At harvest, individuals reared on longline presented higher growth rates and consequently reached greater weight and length values than those reared on pole. Mussels reared at the longline grew 73.2 mm and gained 53.5 g W L (live weight) and 3.3 g W t (tissue dry weight) after 12 months of cultivation. However, mussels cultured at the pole gained only 52.3 mm, 26.7 g W L and 1.6 g W t . Aerial exposure of mussels at low tides could explain this reduced performance on pole compared with longline. Size frequency distributions at harvest fitted bimodal distribution in both cultures due to an asymmetric competition among individuals. Effect of density started in both treatments after 7 months of culture when mussels reached 60-70 mm, implying an increment of their food and space requirements. To prevent overcrowding, the initial density should have been reduced through "thinning-out." The longline method exhibited high-performance growth and hence is highly recommended for cultivation of P. perna in Dakhla bay. K E Y W O R D Saerial exposure, crowding conditions, mussel culture, mussel growth, Perna perna, suspended culture, time

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“…Conversely, in small harbors and open bays that are exposed to offshore circulation, self-recruitment is reduced, and hence connectivity with other populations is promoted. Nearshore processes in the mouth of estuaries are known to affect larval retention (Tilburg et al 2007;Peteiro et al 2011). These processes, operating just outside estuaries or embayments, are critical as a first step in the Fig.…”

Section: Discussionmentioning

confidence: 99%

Physical and biological controls on larval dispersal and connectivity in a highly energetic shelf sea

Robins

Neill

Giménez

et al. 2013

Limnology & Oceanography

114

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Connectivity within marine species plays a fundamental role in population dynamics, genetic diversity, spread of disease, and resilience to human exploitation. However, for shellfish species that are sessile as adults, the larvaldispersal stage remains largely unresolved. Appreciation of larval connectivity is therefore crucial to population genetics and marine management. We describe a coupled three-dimensional hydrodynamic and Lagrangian particle tracking model used to simulate larval transport and show how temporal and spatial hydrodynamic changes, together with larval behavior, are likely to affect dispersal. A case study of Irish Sea (United Kingdom) shellfish populations incorporates a wide range of hydrodynamic environments that are prevalent in other marine systems around the world. Our simulations tested two main processes that control larval dispersal: hydrodynamics and vertical migration. Simulated larval cohorts were released from estuaries and soft sediment locations in regions that were oceanographically distinct. Larvae originating from exposed areas could migrate offshore (low retention and high connectivity) and disperse farther than larvae that remained in flood-dominant estuaries, which promote retention. Simulated self-recruitment and connectivity with neighboring populations (, 50 km apart) were generally high, although well-developed mesoscale residual currents were important, controlling dispersal pathways offshore. Vertical migration strategies, synchronized either with the tide (tidal stream transport) or with the Earth's rotation (diel transport), enabled more larvae to remain close to the coast, and simulations indicated higher retention than for passive larvae. However, the probability of connectivity with other populations and potential survivorship was greater for tidal strategies than for passive (although passive transport populated more distinct areas albeit in smaller proportions, as more larvae remained stranded offshore), or diel, where larvae remained close to their release location.

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Influence of intermittent-upwelling on Mytilus galloprovincialis settlement patterns in the Ría de Ares-Betanzos

Cited by 27 publications

References 67 publications

Growth variations within a farm of mussel (Mytilus galloprovincialis) held near fish cages: importance for the implementation of integrated aquaculture

Growth variations within a farm of mussel (Mytilus galloprovincialis) held near fish cages: importance for the implementation of integrated aquaculture

Differential growth of the brown mussel,Perna perna(Linnaeus, 1758), in longline and pole cultures in Dakhla Bay (SWMorocco, Atlantic Ocean)

Physical and biological controls on larval dispersal and connectivity in a highly energetic shelf sea

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