Siltation negatively affects settlement and gaping behaviour in eastern oysters

Poirier, Luke A.; Clements, Jeff C.; Coffin, Michael R.S.; Craig, Tessa; Davidson, Jeff; Miron, Gilles; Davidson, John D.P.; Hill, Jonathan; Comeau, Luc A.

doi:10.1016/j.marenvres.2021.105432

Cited by 15 publications

(6 citation statements)

References 40 publications

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“…Increased turbidity can be associated with storm-related resuspension of estuarine sediments and/or increased sediment runoff into coastal waters [112,113]. Post-storm sediment deposits on suitable substrates can negatively affect larval settlement, recruitment, and survival [85,114]. Dissolved inorganic nitrogen (DIN) was found to remain elevated in the Matanzas River Estuary (including the southern portion of the FM region in this study) well into January 2018 [115].…”

Section: Discussionmentioning

confidence: 70%

Spatial and Temporal Variability in Oyster Settlement on Intertidal Reefs Support Site-Specific Assessments for Restoration Practices

Kimmel,

Prevost,

Knoell

et al. 2024

JMSE

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As some of the most threatened ecosystems in the world, the declining condition and coverage of coastal habitats results in the loss of the myriad ecosystem services they provide. Due to the variability in physical and biological characteristics across sites, it is imperative to increase location-based information to inform local management projects, which will potentially help to reestablish functions of coastal habitats. Since oysters are often used in restoration projects, this study quantified spatial and temporal patterns in eastern oyster spat settlement in a bar-built estuary in northeast Florida, USA that is host to a robust population of intertidal oyster reefs. Spat settlement was found to occur from April to October with small peaks in the spring and large ones around September. Inter-annual differences in spat settlement were likely influenced by existing environmental conditions and heavily affected by large-scale events such as tropical cyclones. Variations in regional spat settlements are possibly driven by the residence times of the watersheds, the density of adult populations, and the location of the spat collectors. The results of this study illustrate place-based variability in oyster settlement patterns and underscore the importance of local monitoring for oyster resource management, restoration, and research.

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Section: Discussionmentioning

confidence: 70%

Spatial and Temporal Variability in Oyster Settlement on Intertidal Reefs Support Site-Specific Assessments for Restoration Practices

Kimmel,

Prevost,

Knoell

et al. 2024

JMSE

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“…Lab and field studies have shown that eastern oysters respond to severe hypoxia by closing their valves [ 14 , 15 ]. Behavioral responses (valve movements) also have been reported with exposure to toxic microalgae [ 8 , 17 ], increased concentrations of suspended particle matter [ 18 ] and sedimentation [ 19 ], and exposure to low-frequency sounds (<1 kHz) [ 20 , 21 ].…”

Section: Introductionmentioning

confidence: 99%

The nocturnal life of the great scallops (Pecten maximus, L.): First description of their natural daily valve opening cycle

Retailleau¹,

Chauvaud²,

Richard³

et al. 2023

PLoS ONE

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Valvometry techniques used to monitor bivalve gaping activity have elucidated numerous relationships with environmental fluctuations, along with biological rhythms ranging from sub-daily to seasonal. Thus, a precise understanding of the natural activity of bivalves (i.e., not exposed to stressful environmental variations) is necessary as a baseline for detecting abnormal behaviors (deviations). This knowledge is also needed to reliably interpret observations of bivalve gaping behavior and associated biological processes (e.g., respiration, nutrition) acquired over time-limited periods. With this in mind, we investigated the natural daily gaping activity of the great scallop (Pecten maximus) by continuously monitoring 35 individuals in several individual tanks and in situ (Bay of Saint-Brieuc, Brittany, France) using fully autonomous Hall effect sensors. Our results revealed a circadian cycle (τ = 24.0h) in scallop gaping activity. Despite significant inter-individual variability in mean opening and cycle amplitude, almost all individuals (87.5%) exhibited nocturnal activity, with valves more open at night than during the day. A shift in light regime in the tanks triggered an instantaneous change in opening pattern, indicating that light levels strongly determine scallop activity. Based on the opening status of scallops, we also identified several gaping behaviors deviating from the regular daily pattern (lack of rhythmicity, high daytime opening), potentially reflecting physiological weakness. While further long-term studies are required to fully understand the natural activity of scallops, these findings pave the way for studies focused on the scallop response to external factors and introduce further research into the detection of abnormal behaviors. Coupling observations of diel valve gaping cycles with other daily variations in organismal and environmental parameters could help explain mechanisms driving the growth patterns of scallops observed in their shell striations. From a technical perspective, our field-based monitoring demonstrates the suitability of autonomous valvometry sensors for studying mobile subtidal bivalve activity in remote offshore environments.

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“…For suspension-feeding bivalves, an accretionary environment can be problematic-sediment can clog filters and decrease feeding, leading to altered physiological condition over short temporal scales ( Bricelj & Malouf, 1984 ; Ellis et al, 2002 ). For oysters, partial to complete burial has several negative effects, including interruption of recruitment ( Poirier et al, 2021 ), reduced tissue condition ( Colden & Lipcius, 2015 ), and even burial-induced mortality ( Comeau, 2014 ; Lenihan, 1999 ; Rose, 1973 ). Oysters may respond to sediment accumulation and partial burial by increasing shell extension rates ( Colden & Lipcius, 2015 ), which may be a common response in stressful conditions ( Galtsoff & Luce, 1930 ; McCormick-Ray, 2005 ).…”

Section: Introductionmentioning

confidence: 99%

Submarine groundwater discharge interacts with creek geomorphology to affect eastern oyster Crassostrea virginica growth rates in a coastal Georgia creek

Carroll

Kelly

2023

PeerJ

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Eastern oysters, Crassostrea virginica, are commercially important coastal species that provide many ecosystem services for coastal communities. Unfortunately, 85% of oyster reefs have been lost globally, prompting investments in restoration efforts to rebuild populations. Managers often consider several well-studied environmental and water quality parameters when making restoration site decisions. However, recent research suggests that submarine groundwater discharge (SGD) may play a role in driving the distribution of oysters in some estuaries. Specifically, SGD may result in localized areas of low dissolved oxygen and low pH that could inhibit oyster recruitment and survival. However, SGD may interact with other potential oyster stressors, including creek geomorphology. On point bars, sediment accumulation could alter growth rates of oysters and physiology, and it is possible that the two factors, SGD and creek geomorphology, could interact to impact oyster growth. We conducted a field experiment to examine the effects of SGD and creek geomorphology on oyster growth rates in a marsh-lined tidal creek in Georgia, USA. High and low SGD sites were paired within point bars and cut banks. Oysters were deployed in cages for 72 days and growth rates were determined. We found a significant interaction between SGD and creek geomorphology on oyster growth rates. Oysters grew at significantly faster rates at locations on accretionary point bars regardless of SGD flux, whereas, on erosional cut banks, high SGD flux significantly reduced oyster growth rate relative to low SGD flux. It appears that SGD may negatively influence oyster growth at specific creek locations, likely due to the presence of other stressors. Therefore, it is important to consider potential interacting and confounding stressors when managing oyster populations. As SGD is still a relatively understudied potential stressor for oysters, it is critical to continue to examine how groundwater might influence oysters in other locations and in combination with other stressors. Regardless, this study provides further evidence that SGD should be considered in future management efforts.

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Siltation negatively affects settlement and gaping behaviour in eastern oysters

Cited by 15 publications

References 40 publications

Spatial and Temporal Variability in Oyster Settlement on Intertidal Reefs Support Site-Specific Assessments for Restoration Practices

Spatial and Temporal Variability in Oyster Settlement on Intertidal Reefs Support Site-Specific Assessments for Restoration Practices

The nocturnal life of the great scallops (Pecten maximus, L.): First description of their natural daily valve opening cycle

Submarine groundwater discharge interacts with creek geomorphology to affect eastern oyster Crassostrea virginica growth rates in a coastal Georgia creek

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