Abstract:

This dataset reports lengths of Amphibalanus improvisus nauplii and Schizocardium sp. larvae exposed to crude oil emulsions, dispersant-treated crude oil emulsions, or dispersant alone after 48 hours. Animals were collected from surface water using a plankton net and isolated in the laboratory. The length of 30 – 40 individual Schizocardium sp. larvae after 48 hours exposure to different concentrations of crude oil (1 , 5, 10 uL/L), dispersant-treated crude oil (1, 5, 10 uL/L) and dispersant (0.05, 0.25, 0.5 uL/L) are reported in this dataset. As are the lengths of 31-43 individual A. improvisus nauplii after 72 hours exposure to crude oil (1 uL/L), dispersant-treated crude oil (0.05 uL/L), and dispersant (1 uL/L). Length-specific growth rates for both barnacle nauplii and tornaria larvae were calculated and are provided for each replicate and treatment. Additionally the percent mortality for barnacle nauplii after 72 hours is included in this dataset.

Suggested Citation:

Almeda, Rodrigo, et al. 2016. Dataset for: Dispersant Corexit 9500A and chemically dispersed crude oil decreases the growth rates of the meroplanktonic barnacle nauplii (Amphibalanus improvisus) and tornaria larvae (Schizocardium sp.). Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N7KD1VXN

Publications:

Almeda, R., Bona, S., Foster, C. R., & Buskey, E. J. (2014). Dispersant Corexit 9500A and chemically dispersed crude oil decreases the growth rates of meroplanktonic barnacle nauplii (Amphibalanus improvisus) and tornaria larvae (Schizocardium sp.). Marine Environmental Research, 99, 212–217. doi:10.1016/j.marenvres.2014.06.007

Purpose:

To determine the acute effects Light Louisiana Sweet crude oil, dispersant Corexit 9500A, and dispersant-treated crude oil on the survival and growth rates of nauplii of the barnacle Amphibalanus improvisus and tornaria larvae of the enteropneust Schizocardium sp.

Data Parameters and Units:

Almeda et al.2014_larval_growth_oil_disp.xlsx-- lengths of barnacle nauplii: barnacle #, length of barnacle nauplii (um), initial = start of experiment, or after 72 hr of exposure to treatment. lengths of tornaria larvae: tornaria larvae #, lengths of tornaria larvae (um), initial = start of the experiment, or after 48 hr of exposure to treatment mortality and growth nauplii: crude oil concentration (uL/L), mortality (%), treatment, length-specific growth rates G (/day) growth rates_Tornaria: treatment, treatment concentration (uL/L), growth rates G (/d) Treatments: control = absence of pollutants oil = suspensions of crude oil droplets in seawater dispersed physically oil+disp = dispersant-treated crude oil emulsions (crude oil emulsions in seawater dispersed physically and chemically) disp = a solution of dispersant alone in seawater A, B, C, and D are the different Replicates Concentrations of crude oil and dispersant used: E1 oil: crude oil concentration = 1 uL/L E1 disp: dispersant concentration = 0.05 uL/L E1 oil + disp: dispersant-treated crude oil = 1 uL/L of crude oil and 0.05 uL/L of dispersant E2 oil: crude oil concentration = 5 uL/L E2 disp: dispersant concentration = 0.25 uL/L E2 oil + disp: dispersant-treated crude oil = 5 uL/L of crude oil and 0.25 uL/L of dispersant E3 oil: crude oil concentration = 10 uL/L E3 disp: dispersant concentration = 0.50 uL/L E3 oil + disp: dispersant-treated crude oil = 10 uL/L of crude oil and 0.50 uL/L dispersant

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