Effect of dissolved oxygen on the energy balance and survival of Penaeus setiferus juveniles

Rosas, Carlos; Martínez, Evenor; Gaxiola, Gabriela; Brito, Roberto; Díaz-Iglesia, Eugenio; Soto, Luís A.

doi:10.3354/meps174067

Cited by 47 publications

(28 citation statements)

References 17 publications

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“…The large plankton production and vertical stratification driven by the MS-A river system discharge promote the development of a hypoxic bottom layer a few meters thick off Louisiana and Texas during summer (Obenour et al, 2013). This hypoxic layer can negatively impact metabolism and growth of fish and invertebrates (Rosas et al, 1998;Craig and Crowder, 2005), and disturb species distribution and composiPublished by Copernicus Publications on behalf of the European Geosciences Union. 3562 F. A.…”

Section: Introductionmentioning

confidence: 99%

Seasonal patterns in phytoplankton biomass across the northern and deep Gulf of Mexico: a numerical model study

et al. 2018

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Abstract. Biogeochemical models that simulate realistic lower-trophic-level dynamics, including the representation of main phytoplankton and zooplankton functional groups, are valuable tools for improving our understanding of natural and anthropogenic disturbances in marine ecosystems. Previous three-dimensional biogeochemical modeling studies in the northern and deep Gulf of Mexico (GoM) have used only one phytoplankton and one zooplankton type. To advance our modeling capability of the GoM ecosystem and to investigate the dominant spatial and seasonal patterns of phytoplankton biomass, we configured a 13-component biogeochemical model that explicitly represents nanophytoplankton, diatoms, micro-, and mesozooplankton. Our model outputs compare reasonably well with observed patterns in chlorophyll, primary production, and nutrients over the Louisiana-Texas shelf and deep GoM region. Our model suggests silica limitation of diatom growth in the deep GoM during winter and near the Mississippi delta during spring. Model nanophytoplankton growth is weakly nutrient limited in the Mississippi delta year-round and strongly nutrient limited in the deep GoM during summer. Our examination of primary production and net phytoplankton growth from the model indicates that the biomass losses, mainly due to zooplankton grazing, play an important role in modulating the simulated seasonal biomass patterns of nanophytoplankton and diatoms. Our analysis further shows that the dominant physical process influencing the local rate of change of model phytoplankton is horizontal advection in the northern shelf and vertical mixing in the deep GoM. This study highlights the need for an integrated analysis of biologically and physically driven biomass fluxes to better understand phytoplankton biomass phenologies in the GoM.

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Section: Introductionmentioning

confidence: 99%

Seasonal patterns in phytoplankton biomass across the northern and deep Gulf of Mexico: a numerical model study

et al. 2018

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“…Third, biological mechanisms that link hypoxia to shrimp abundance produce sharp predictions about the shrimp market. Bioenergetic consequences of hypoxia likely translate into impaired growth (12)(13)(14)(15)(16), reducing the average size of shrimp in the population. Shrimp also aggregate along the edges of the hypoxic area such that segments of the population are exposed to increased catchability early in the season when shrimp are small (12)(13)(14).…”

mentioning

confidence: 99%

Seafood prices reveal impacts of a major ecological disturbance

Smith

Øglend

Kirkpatrick

et al. 2017

Proc. Natl. Acad. Sci. U.S.A.

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Coastal hypoxia (dissolved oxygen ≤ 2 mg/L) is a growing problem worldwide that threatens marine ecosystem services, but little is known about economic effects on fisheries. Here, we provide evidence that hypoxia causes economic impacts on a major fishery. Ecological studies of hypoxia and marine fauna suggest multiple mechanisms through which hypoxia can skew a population's size distribution toward smaller individuals. These mechanisms produce sharp predictions about changes in seafood markets. Hypoxia is hypothesized to decrease the quantity of large shrimp relative to small shrimp and increase the price of large shrimp relative to small shrimp. We test these hypotheses using time series of size-based prices. Naive quantitybased models using treatment/control comparisons in hypoxic and nonhypoxic areas produce null results, but we find strong evidence of the hypothesized effects in the relative prices: Hypoxia increases the relative price of large shrimp compared with small shrimp. The effects of fuel prices provide supporting evidence. Empirical models of fishing effort and bioeconomic simulations explain why quantifying effects of hypoxia on fisheries using quantity data has been inconclusive. Specifically, spatial-dynamic feedbacks across the natural system (the fish stock) and human system (the mobile fishing fleet) confound "treated" and "control" areas. Consequently, analyses of price data, which rely on a market counterfactual, are able to reveal effects of the ecological disturbance that are obscured in quantity data. Our results are an important step toward quantifying the economic value of reduced upstream nutrient loading in the Mississippi Basin and are broadly applicable to other coupled human-natural systems.hypoxia | fisheries | coupled human-natural systems | bioeconomics | spatial dynamics F ertilizer use in coastal watersheds and agriculture intensification contribute to a growing incidence of coastal ecological disturbances (1-4). Of particular concern is coastal hypoxia [dissolved oxygen (DO) ≤ 2 mg/L] and potential impacts on marine fauna (1-4). The Western Hemisphere's largest area of seasonal hypoxia is in the Gulf of Mexico (GoM; >20,000 km 2 ) and overlaps with what was once the highest value fishery in the United States (brown shrimp) (www.st.nmfs.noaa.gov/commercial-fisheries/index) (5-7). Because controlling nutrient runoff upstream is costly, identifying and quantifying economic benefits downstream, including benefits to commercial fisheries, are essential for policy analysis (www.st. nmfs.noaa.gov/commercial-fisheries/index) (8-10). Although studies demonstrate ecological effects of hypoxia, economic consequences have not been established in this fishery.GoM brown shrimp (Farfantepenaeus aztecus) provide a unique opportunity to study the economic effects of hypoxia. First, the fishery is concentrated in regions of the GoM that become hypoxic seasonally (7) (SI Appendix, Figs. S1 and S2). Second, the temporal dynamics of brown shrimp and hypoxia match. Within season, harvest and hy...

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“…Moreover, shrimp invest more time in assimilation of food at these lower levels of dissolved oxygen (Rosas et al 1998). Another study identified a negative effect of severe hypoxia (1 mg/l dissolved oxygen) on the immune response of Penaeus stylirostris shrimp, further noting that the mortality of the hypoxia-stressed shrimp significantly increased when experimentally injected with a virulent (Moullac et al 1998).…”

Section: Empirical Backgroundmentioning

confidence: 99%

“…For example, juvenile white shrimp can survive moderately low levels of dissolved oxygen, but their growth rates decrease when exposed to dissolved oxygen levels below 4 mg/1 (Rosas et al 1998).…”

Section: Empirical Backgroundmentioning

confidence: 99%

Measuring Welfare Losses from Hypoxia: The Case of North Carolina Brown Shrimp

Huang¹,

Nichols

Craig

et al. 2012

Marine Resource Economics

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While environmental stressors such as hypoxia (low dissolved oxygen) are perceived as a threat to the productivity of coastal ecosystems, policy makers have little information about the economic consequences for fisheries. Recent work on hypoxia develops a bioeconomic model to harness microdata and quantify the effects of hypoxia on North Carolina's brown shrimp fishery. This work finds that hypoxia is responsible for a 12.9% decrease in NC brown shrimp catches from 1999-2005 in the Neuse River Estuary and Pamlico Sound, assuming that vessels do not react to changes in abundance. The current article extends this work to explore the full economic consequences of hypoxia on the supply and demand for brown shrimp. Demand analysis reveals that the NC shrimp industry is too small to influence prices, which are driven entirely by imports and other domestic U.S. harvest. Thus, demand is flat and there are no measurable benefits to shrimp consumers from reduced hypoxia. On the supply side, we find that the shrimp fleet responds to variation in price, abundance, and weather. Hence, the supply curve has some elasticity. Producer benefits of reduced hypoxia are less than a quarter of the computed gains from assuming no behavioral adjustment.

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Effect of dissolved oxygen on the energy balance and survival of Penaeus setiferus juveniles

Cited by 47 publications

References 17 publications

Seasonal patterns in phytoplankton biomass across the northern and deep Gulf of Mexico: a numerical model study

Seasonal patterns in phytoplankton biomass across the northern and deep Gulf of Mexico: a numerical model study

Seafood prices reveal impacts of a major ecological disturbance

Measuring Welfare Losses from Hypoxia: The Case of North Carolina Brown Shrimp

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