Spatial patterns of larval settlement and early post-settlement survivorship of Mytilus galloprovincialis in a Galician Ría (NW Spain). Effect on recruitment success

Fuentes-Santos, I.; Labarta, Uxío

doi:10.1016/j.rsma.2015.08.006

Cited by 13 publications

(7 citation statements)

References 65 publications

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“…34,39,41,42 Settlement on suspended ropes is spatially and temporally variable with the relationship between the number of settlers and retained seed diminishing over time during a catching season. 34,39,43,44 In New Zealand, around 70%-80% of the seed supply is collected from one area in the far north of the country where they wash onto an extensive beach, attached to drifting macroalgae and other structures such as hydroids. 33 Like settlement on suspended ropes, these strandings are sporadic and vary within and among years.…”

Section: S Eed Supply and Source Smentioning

confidence: 99%

The loss of seed mussels in longline aquaculture

South

Delorme

Skelton

et al. 2021

Reviews in Aquaculture

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Mussel aquaculture around the world is traditionally reliant on highly variable natural supplies of seed that are collected from the wild and transferred to mussel farms. [1][2][3][4][5][6][7] In many global regions, hatchery production is being increasingly used to provide a more consistent supply of seed mussels. However, the seeding of longline mussel aquaculture operations is inefficient, with many of the mussels from both wild and hatchery sources being lost in the first few months of aquaculture. [8][9][10] In many cases, losses can be extreme with >95% of seed being lost. [11][12][13] At seeding into longline aquaculture, loose mussels or seed attached to substrates, such as macroalgae, are deployed into the sea alongside a grow-out rope with a socking material holding the seed and their substrates in place. 7,14 The success of the seeding process is heavily reliant on survival of the seed mussels and their ability to migrate and attach to the grow-out rope. 9Losses of these seed mussels are a significant constraint to the continuity and envisaged growth of the global mussel farming industry 15 and represent a considerable waste of valuable natural resources or costly hatchery-reared seed. 16,17 Therefore, in the face of limited seed resources and the projected growth in human population and food demand, maximising production efficiencies to maintain or increase commercial mussel yield by mitigating against seed losses should be a fundamental goal of mussel aquaculture.

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Section: S Eed Supply and Source Smentioning

confidence: 99%

The loss of seed mussels in longline aquaculture

South

Delorme

Skelton

et al. 2021

Reviews in Aquaculture

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“…This information is particularly valuable in our case because, as explained above, the effects of solar irradiance and continental runoff on seawater temperature and food availability, which drive larval production and survival, are not immediate. Furthermore, as the larval pelagic phase of M. galloprovincialis lasts between 10 and 30 days 2 6 the curves of solar irradiance and continental runoff from 15 to 45 days prior to sampling allowed us to include in the model the influence of these factors on larval production, larval growth, and pre-settlement survival 29 .…”

Section: Discussionmentioning

confidence: 99%

“…Larval settlement in the Galician Rías is concentrated during spring-summer, in the form of successive spawning events during the upwelling favourable season 5 33 . Local variability in settlement intensity but a common seasonal pattern for settlement episodes has been found 29 . Furthermore, a model that explained the effects of the wind-driven upwelling regime and continental runoff on larval development, dispersal and settlement has already been published 5 .…”

mentioning

confidence: 95%

“…The Galician Rías (NW Iberian coast), located in the northern boundary of the Iberian-Canary Current upwelling system, are characterized by a high mussel production. The importance of larval production and recruitment for the management of mussel culture in this area has motivated an increasing interest on the settlement processes of mussels and the underlying environmental factors 5 6 27 28 29 30 31 32 .…”

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confidence: 99%

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Solar irradiance dictates settlement timing and intensity of marine mussels

Fuentes-Santos

Labarta

Álvarez-Salgado

et al. 2016

Sci Rep

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Identifying the environmental factors driving larval settlement processes is crucial to understand the population dynamics of marine invertebrates. This work aims to go a step ahead and predict larval presence and intensity. For this purpose we consider the influence of solar irradiance, wind regime and continental runoff on the settlement processes. For the first time, we conducted a 5-years weekly monitoring of Mytilus galloprovincialis settlement on artificial suspended substrates, which allowed us to search for interannual variability in the settlement patterns. Comparison between the seasonal pattern of larval settlement and solar irradiance, as well as the well-known effect of solar irradiance on water temperature and food availability, suggest that solar irradiance indirectly influences the settlement process, and support the use of this meteorological variable to predict settlement occurrence. Our results show that solar irradiance allows predicting the beginning and end of the settlement cycle a month in advance: Particularly we have observed that solar irradiance during late winter indirectly drives the timing and intensity of the settlement onset, Finally, a functional generalise additive model, which considers the influence of solar irradiance and continental runoff on the settlement process, provides an accurate prediction of settlement intensity a fortnight in advance.

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“…A crucial reason for limited evidence of a broodstock-recruitment relationship in bivalves is the importance of recruit survival determining the degree and spatial distribution of recruitment (Powell et al 1984, Guillou & Tartu 1994,Ólafsson et al 1994, Hunt et al 2003. Not infrequently, recruitment occurs in locations inimical to growth to adulthood (Wells & Gray 1960, Morse & Hunt 2013, Fuentes-Santos & Labarta 2015.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Relationship of Stock and Recruitment in the Atlantic Surfclam Spisula solidissima in the Northwestern Atlantic Ocean

Timbs

Powell

Mann

2018

Journal of Shellfish Research

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Atlantic surfclams support a major commercial fishery in the western North Atlantic Ocean with landings consistently between 15,000 and 25,000 metric tons since 1982. The stock is not and historically has not been overfished nor has overfishing occurred; however, in recent years landings per unit effort have declined. Surfclams are a biomass dominant on the continental shelf and a bellwether of climate change in the northwestern Atlantic. This study investigated the relationship of broodstock and recruitment during a period when Mid-Atlantic warming initiated a shelf-wide shift in the surfclams range. A species distribution function model was used to assess the effective area occupied by surfclams for five study regions (Delmarva, New Jersey, Long Island, Southern New England, and Georges Bank). The effective area occupied by small surfclams was consistently much greater than that for large ($120 mm) surfclams. Three independent statistical analyses of the stock-recruitment relationship found little evidence of a significant association in any of the five regions, suggesting that factors besides spawning stock biomass (SSB) are primary determinants of recruitment success. Interannual variability in recruitment, in part associated with variations in larval transport and in part associated with spatially different rates of mortality post-settlement, is an important source of uncertainty and warming bottom waters driving surfclams into new habitat may decouple any inherent interaction between recruits and SSB. A recruitment index obtained from a fishery-independent survey across the range of the stock, as a consequence, is unlikely to usefully presage changes in abundance of the fishable stock. The wider distribution of settlers relative to the fishable stock, however, positions the species well to respond to changing bottom water temperatures as Mid-Atlantic warming continues.

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Spatial patterns of larval settlement and early post-settlement survivorship of Mytilus galloprovincialis in a Galician Ría (NW Spain). Effect on recruitment success

Cited by 13 publications

References 65 publications

The loss of seed mussels in longline aquaculture

The loss of seed mussels in longline aquaculture

Solar irradiance dictates settlement timing and intensity of marine mussels

Assessment of the Relationship of Stock and Recruitment in the Atlantic Surfclam Spisula solidissima in the Northwestern Atlantic Ocean

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