Spatial population dynamics of eastern oyster in the Chesapeake Bay, Maryland

Mace, Marvin M.; Doering, Kathryn; Wilberg, Michael J.; Larimer, Amy; Marenghi, Frank; Sharov, Alexei; Tarnowski, Mitchell

doi:10.1016/j.fishres.2020.105854

Cited by 6 publications

(6 citation statements)

References 43 publications

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“…This retardation in growth could be very costly from the population’s perspective, because it increases the chances of larval predation and thus decreases the reproductive pool of the population. The Eastern oyster population has declined over the past 130 years [ 27 ] and the findings of the current study suggest that the growth retardation of the larva due to MP exposure could be one of the many reasons for this decline in recent decades.…”

Section: Discussionmentioning

confidence: 90%

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Effect of High-Density Polyethylene Microplastics on the Survival and Development of Eastern Oyster (Crassostrea virginica) Larvae

Bhatt,

Fan,

Liu

et al. 2023

IJERPH

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Microplastic (MP) pollution is a growing global concern—especially in estuarine areas that serve as natural habitats and nurseries for many marine organisms. One such marine organism is the Eastern oyster (Crassostrea virginica), which is a reef-forming keystone species in the Chesapeake Bay, the largest estuary in the United States. To understand the potential impacts of MP pollution on the estuary ecosystem, the effects of high-density polyethylene (HDPE) MPs on Eastern oyster larval survival and development were investigated. Three cohorts of larvae were exposed to HDPE MPs with a size of 10–90 µm at a 10 mg/L concentration, after 7 to 11 days of fertilization. After exposure, the number and size of oyster larvae were measured twice a week for approximately 2 weeks until larval settlement. The experiment found that there were no significant differences in the rate of survival between the control and MP-addition treatments. However, we noticed that larval development was significantly delayed with the MP treatment. The percentage of larvae that were ready to settle was 64% with the control treatment compared to 43.5% with the MP treatment. This delay in growth resulted in a delayed larval settlement, which could adversely affect the survival of the Eastern oyster due to the increased risk of predation. The current study demonstrates that MPs could be a risk to the ecology of estuaries, and plastic pollution management is needed for the preservation of these estuaries.

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Section: Discussionmentioning

confidence: 90%

“…The Eastern oyster life cycle consists of two phases: the fertilization to the larval stages are free-swimming stages, while after larval settlement, the individual becomes benthic [ 27 ]. The larval stages are only protected by a soft shell, while adult oysters develop a hard shell for protection.…”

Section: Introductionmentioning

confidence: 99%

Effect of High-Density Polyethylene Microplastics on the Survival and Development of Eastern Oyster (Crassostrea virginica) Larvae

Bhatt,

Fan,

Liu

et al. 2023

IJERPH

View full text Add to dashboard Cite

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“…2010; Mace et al. 2021), for restoration planning and monitoring (NOAA 2020), and as a comparison for gear efficiency studies (e.g., Morson et al. 2018).…”

Section: Discussionmentioning

confidence: 99%

“…where B i was the density of boxes and L i was the density of live eastern oysters at site i. There is not a standard method for estimating the uncertainty of box mortality rates (Doering et al 2021). Generally, eastern oyster recruitment in the Maryland portion of Chesapeake Bay occurs later than our diver sampling period and most natural mortality is thought to occur in the fall (Doering et al 2021).…”

Section: Methodsmentioning

confidence: 96%

“…Hydraulic patent tongs are widely used to estimate eastern oyster abundance for stock assessment (e.g., Southworth et al 2010;Mace et al 2021), for restoration planning and monitoring (NOAA 2020), and as a comparison for gear efficiency studies (e.g., Morson et al 2018). Each of these examples has assumed that hydraulic patent tongs are nearly 100% efficient in collecting eastern oysters.…”

Section: Management Implicationsmentioning

confidence: 99%

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Efficiency of Hydraulic Patent Tongs for Surveying Restored Eastern Oyster Reefs in Harris Creek, Maryland

Wilberg

Coleman

Slacum

et al. 2022

N American J Fish Manag

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The eastern oyster Crassostrea virginica is a temperate reef‐building bivalve that provides an array of ecosystem services. Efforts to restore eastern oyster have been increasing, highlighting the need for standardized monitoring metrics across projects and regions. Our objective was to estimate the efficiency of hydraulic patent tongs for estimating eastern oyster density on restoration sites in Harris Creek, Maryland. We sampled eastern oysters using a diver and hydraulic patent tongs and estimated differences in density estimates between the two gears using a mixed‐effects generalized linear model. On average, density estimates from hydraulic patent tongs were only 30% of those from the diver, which was substantially lower than previous studies. Given the widespread use of hydraulic patent tongs in eastern oyster research and management, a better understanding of the efficiency of hydraulic patent tongs is needed.

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Natural mortality: Theory, estimation and application in fishery stock assessment models

et al. 2023

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Spatial population dynamics of eastern oyster in the Chesapeake Bay, Maryland

Cited by 6 publications

References 43 publications

Effect of High-Density Polyethylene Microplastics on the Survival and Development of Eastern Oyster (Crassostrea virginica) Larvae

Effect of High-Density Polyethylene Microplastics on the Survival and Development of Eastern Oyster (Crassostrea virginica) Larvae

Efficiency of Hydraulic Patent Tongs for Surveying Restored Eastern Oyster Reefs in Harris Creek, Maryland

Natural mortality: Theory, estimation and application in fishery stock assessment models

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