Understanding scales of density-dependence to improve the use of resources in benthic mussel aquaculture

Bertolini, Camilla; Veld, J.W.D. ter; Koppel, Johan van de; Bouma, Tjeerd J.

doi:10.1016/j.aquaculture.2020.735477

Cited by 10 publications

(4 citation statements)

References 41 publications

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“…Observed and/or calculated characteristics of each estuary were obtained from: a OzCoasts (2015), b NSW Office of Environment and Heritage (2016) for periods between 2007 and 2015, and c NearMap Ltd. unless specified. example, the population density and mean body size of foundation species can be smaller at patch edges in comparison to patch centers (Hanke et al 2017), but the opposite pattern also occurs (Bell et al 2001;Boström et al 2011;Bertolini et al 2020). Such variation may be explained by within-patch attributes (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…At small spatial scales, these characteristics can vary within habitat patches, although patterns are equivocal. For example, the population density and mean body size of foundation species can be smaller at patch edges in comparison to patch centers (Hanke et al 2017), but the opposite pattern also occurs (Bell et al 2001; Boström et al 2011; Bertolini et al 2020). Such variation may be explained by within‐patch attributes (i.e.…”

Section: Introductionmentioning

confidence: 99%

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Variation in the density and body size of a threatened foundation species across multiple spatial scales

Leong

Bugnot

Marzinelli

et al. 2022

Restoration Ecology

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Population characteristics (e.g. density and body sizes) of foundation species can affect their own persistence and provisioning of ecosystem functions. Understanding the drivers of population characteristics of foundation species at multiple spatial scales is therefore critical for maximizing ecosystem functions of restored habitats. We analyzed variation in population characteristics (densities, 95th percentile, and median lengths of live oysters) of the Sydney rock oyster, Saccostrea glomerata, on remnant oyster reefs at regional scales (among three estuaries) along an approximately 250 km of coastline in New South Wales, Australia. We then analyzed how population characteristics were further related to spatial attributes at smaller spatial scales including within‐patches (rugosity, distance to patch‐edge, and elevation), whole‐patches (size and shape), and among‐patch (connectivity) within each estuary. The densities and body sizes of S. glomerata were related to spatial attributes occurring within‐patch (e.g. elevation), whole‐patch (e.g. shape), and landscape (i.e. connectivity) scales, but these relationships varied among estuaries. The greatest variation in oyster density and size occurred at regional scales, suggesting that processes acting at larger spatial scales (e.g. water quality and/or climate) set the context for smaller scale influences on oyster characteristics. Our results highlight the potential importance of incorporating site‐specific, spatial attributes in the design of restored oyster reefs to maximize ecosystem services and functions provided by restoration efforts.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Variation in the density and body size of a threatened foundation species across multiple spatial scales

Leong

Bugnot

Marzinelli

et al. 2022

Restoration Ecology

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“…Mussel condition declined with mussel density, and, at the same time, survival interacted positively with density, meaning that competition concurred with cooperation. Density also affected the spatial structure of the mussel patches; at lower densities, patches were more complex (as in a higher perimeter:area, see also [ 65 ]). Furthermore, higher turbidity related to more complex patches, an effect that is expected when patches are broken up by hydrodynamic disturbances, such as during storms.…”

Section: Discussionmentioning

confidence: 99%

Seasonal variation in the balance and strength of cooperative and competitive behavior in patches of blue mussels

Capelle,

Hartog,

Wilkes

et al. 2023

PLoS ONE

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Aggregation into groups may affect performance of individuals through the balance and strength of facilitative versus competitive interactions. We studied in situ how seasonal variation in abiotic environment affects this balance for blue mussels, a semi-sessile species. We hypothesize that seasonal variation in stresses and resources affects the strength of the interaction. We expected that, in benign conditions (here: high food availability, medium temperatures, low hydrodynamic stress), performance is dominated by growth and is better at low densities, while at adverse conditions (here: low food availability, low or high temperatures, high hydrodynamic stress), performance is dominated by survival and higher at high densities. Mussels were kept in shallow subtidal exclosures at 10 different densities for a one-month period. This exact procedure was repeated seven times at the same location within a one-year period. We measured development in mussel patch shape, performance, and environmental parameters. Environmental conditions for mussels were most benign in summer and most adverse in winter. Patches developed into less complex shapes at lower densities, but also after stronger hydrodynamic disturbances. Towards summer, mussels became more active, aggregation behavior increased, and interactions became more pronounced. Towards winter, mussels became less active: aggregation behavior and growth rates declined and at the lowest temperatures survival started to decrease with mussel density. Survival and growth (by proxy of mussel condition) were both density-dependent; however, contrary to our expectations we found positive interactions between density and survival at the most benign conditions in summer and negative interactions at the most adverse conditions in winter. In between the two seasons, the strength of the interactions increased towards summer and decreased towards winter following a bell-shaped pattern. This pattern might be explained by the environmental mediated aggregation behavior of the mussels. The obvious seasonal pattern in balance and strength of density-dependent interactions demonstrates that strength and direction of intra-specific interactions are both strongly affected by environmental context.

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“…Growth dependence on density has been studied in other fishery cultured species such as mussels (Aldridge et al, 2008; Bertolini et al, 2020), macroalgae (Xiao et al, 2019), oysters ( Cassostrea gigas ) (Wagner et al, 2012), sea bass ( Dicentrarchus labrax ) (Marco et al, 2008), Dover sole ( Solea solea ) (Schram et al, 2006), abalone ( Haliotis asinina) (Capinpin et al, 1999), common carp ( Cyprinus carpio ) (Lorenzen, 1996) and shrimp ( Litopenaeus vanammei and Penaeu setiferus ) (Williams et al, 1996). Results from these studies show a similar decrease in growth rate and final size under increased stocking density.…”

Section: Introductionmentioning

confidence: 99%

Growth and population modelling based on density of the Pacific white shrimp intensively cultured in freshwater

Araneda

Hernández

Vela

et al. 2022

Aquaculture Research

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Mathematical representation of the growth of organisms in aquaculture systems is a key factor to perform optimal production. Here, we analysed five growth sigmoidal models based on density of previous and current models described in literature (Gompertz, Bertalanffy, Potential and Pütter). These models were fitted to data of Pacific white shrimp cultured in freshwater, with 90, 130, 180, 230, 280 and 330 shrimp/m 2 as initial stocking density of culture. Goodness of fit and statistic validation of the density-dependent model modified from Gompertz proved to display the growth curve that best-described data of shrimp grown between 90 and 180 densities, whereas the growth model modified from Potential proved to best describe higher stocking densities . The population dynamics was also modelled using a density-dependent function. The implications of modelling and their importance in the management of fisheries are discussed.

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Understanding scales of density-dependence to improve the use of resources in benthic mussel aquaculture

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Cited by 10 publications

References 41 publications

Variation in the density and body size of a threatened foundation species across multiple spatial scales

Variation in the density and body size of a threatened foundation species across multiple spatial scales

Seasonal variation in the balance and strength of cooperative and competitive behavior in patches of blue mussels

Growth and population modelling based on density of the Pacific white shrimp intensively cultured in freshwater

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