Effects of elevated CO2 levels on eggs and larvae of a North Pacific flatfish (northern rock sole, Lepidopsetta polyxystra) from laboratory experiment studies from 2012-02-01 to 2013-09-30 (NCEI Accession 0136906)

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 03, 2026 at 02:38 AM | Dataset Last Updated: December 02, 2015 at 12:00 AM

This dataset contains the results of a laboratory experiment study to understand the effect of ocean acidification on eggs and larvae of northern rock sole, Lepidopsetta polyxystra. The Bering Sea and Gulf of Alaska support a number of commercially important flatfish fisheries. These high latitude ecosystems are predicted to be most immediately impacted by ongoing ocean acidification but the range of responses by commercial fishery species has yet to be fully explored. In this study we examined the growth responses of northern rock sole (Lepidopsetta polyxystra) eggs and larvae across a range of CO2 levels (ambient to 1500 uatm) to evaluate the potential sensitivity to ocean acidification. Laboratory-spawned eggs and larvae were reared at 8 degrees Celsius in a flow-through culture system in which CO2 levels were maintained via computer-controlled injection of CO2 into a seawater conditioning tank. Overall, we observed only minor effects of elevated CO2 level on sizes of northern rock sole larvae. Size at hatch differed among offspring from four different females, but there was no significant effect of CO2 level on egg survival or size at hatch. In three separate larval growth trials, there was little effect of CO2 level on growth rates through the first 28 days post-hatch (DPH). However, in the one trial extended to 60 DPH, fish reared at the highest CO2 level had lower condition factors after 28 DPH suggesting that larvae undergoing metamorphosis may be more sensitive to environmental hypercapnia than earlier pre-flexion stages. These results suggest that while early life stages of northern rock sole are less sensitive to ocean acidification than previously examined flatfishes, they may be more sensitive to elevated CO2 levels than a previously studied gadid with a similar geographic range.

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description	This dataset contains the results of a laboratory experiment study to understand the effect of ocean acidification on eggs and larvae of northern rock sole, Lepidopsetta polyxystra. The Bering Sea and Gulf of Alaska support a number of commercially important flatfish fisheries. These high latitude ecosystems are predicted to be most immediately impacted by ongoing ocean acidification but the range of responses by commercial fishery species has yet to be fully explored. In this study we examined the growth responses of northern rock sole (Lepidopsetta polyxystra) eggs and larvae across a range of CO2 levels (ambient to 1500 uatm) to evaluate the potential sensitivity to ocean acidification. Laboratory-spawned eggs and larvae were reared at 8 degrees Celsius in a flow-through culture system in which CO2 levels were maintained via computer-controlled injection of CO2 into a seawater conditioning tank. Overall, we observed only minor effects of elevated CO2 level on sizes of northern rock sole larvae. Size at hatch differed among offspring from four different females, but there was no significant effect of CO2 level on egg survival or size at hatch. In three separate larval growth trials, there was little effect of CO2 level on growth rates through the first 28 days post-hatch (DPH). However, in the one trial extended to 60 DPH, fish reared at the highest CO2 level had lower condition factors after 28 DPH suggesting that larvae undergoing metamorphosis may be more sensitive to environmental hypercapnia than earlier pre-flexion stages. These results suggest that while early life stages of northern rock sole are less sensitive to ocean acidification than previously examined flatfishes, they may be more sensitive to elevated CO2 levels than a previously studied gadid with a similar geographic range.
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identifier	https://data.noaa.gov/waf/NOAA/NESDIS/ncei/accessions/iso/xml/0136906.xml
issued	2015-10-14T00:00:00.000+00:00
keyword	[ "0136906", "ARAGONITE SATURATION STATE", "DISSOLVED INORGANIC CARBON (DIC)", "SALINITY", "SPECIES IDENTIFICATION - DRY WEIGHT", "SPECIES IDENTIFICATION - ORGANISM LENGTH", "total alkalinity", "WATER TEMPERATURE", "coulometer for DIC measurement", "microscope", "multi-parameter water quality sensor", "titrator", "laboratory experiments", "NOAA Alaska Fisheries Science Center", "NODC Ocean Acidification Scientific Data Stewardship (OADS)", "US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP)", "Puget Sound", "West Coast - US/Canada", "oceanography", "DOC/NOAA/NMFS/AFSC > Alaska Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce", "Ocean Acidification Program (OAP)", "Ocean Carbon and Acidification Data System (OCADS) Project", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBONATE", "EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON", "EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE", "EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY", "Laboratory experiment", "Aragonite saturation state", "Calcite saturation state", "Lepidopsetta polyxystra", "Mean body condition - expressed as absolute deviation from from ontogenetic relationship between SL and DW", "Mean body condition - expressed as absolute deviation from from ontogenetic relationship between SL and MH", "Mean body height (myotome height)", "Mean standard length", "Mean yolk area", "North Pacific flatfish", "Number of fish measured for size metrics", "mean dry weight per fish", "northern rock sole", "number of independent dry weight samples", "predicted mean dryweight for fish in that sample based on ontegenetic relationship between SL and DW", "ARsat", "CAsat", "DIC", "DWdev", "DWmean", "DWn", "DWpred", "DWsd", "EXPstage", "EggBatch", "ExposureDays", "HTsd", "MHdevPer", "MHdevPsd", "MHdevmean", "MHdevsd", "MHmean", "SLmean", "SLsed", "Sal", "TA", "TRTlabel", "Tank", "Temp", "YAmean", "YAsd", "calcCO2", "calcpH", "date", "h20DQ", "replicate", "size_n", "time", "COULOMETERS", "MICROSCOPES > MICROSCOPES", "OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN", "Puget Sound", "West Coast of the United States" ]
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modified	2015-12-02T00:00:00.000+00:00
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rights	otherRestrictions
spatial	-122.76,48.135,-122.76,48.135
temporal	2012-02-01T00:00:00+00:00/2013-09-30T00:00:00+00:00
theme	[ "geospatial" ]
title	Effects of elevated CO2 levels on eggs and larvae of a North Pacific flatfish (northern rock sole, Lepidopsetta polyxystra) from laboratory experiment studies from 2012-02-01 to 2013-09-30 (NCEI Accession 0136906)

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