Acute toxicity of drilling muds on Litopenaeus vannamei (Boone, 1931) postlarvae

Contreras-León, Guillermo-José; Rodríguez-Satizábal, Simón-Andrés; Castellanos-Romero, Claudia-Marcela; Franco-Herrera, Andrés; Serrano-Gómez, Marlon

doi:10.29047/01225383.52

Cited by 4 publications

(6 citation statements)

References 12 publications

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“…La concentración de la FSP a la cual 50% o 0.5 del índice de fecundación fue afectada es de 3946 mg.L -1 correspondiente a 394.6 mg.L -1 del lodo original, según este último valor el lodo es considerado moderadamente tóxico, según la clasificación que presentan Jones et al (1986) y Department of Mines and Petroleum (2006). Los gametos de L. variegatus demuestran más tolerancia frente a sustancias de exploración offshore que otros organismos acuáticos, si se compara el grado de toxicidad presentado con lo publicado por Contreras-León et al (2013), los cuales mencionan que para postlarvas de Lytopenaeus vannnamei la sensibilidad o toxicidad aguda (CL 50-96h ) de seis tipos de lodos de perforación en base agua va ente 4224 ppm y 26635 ppm y entre 40781 ppm y 308248 ppm para los lodos en base sintética.…”

Section: Discussionunclassified

“…La toxicidad de los lodos de perforación ha sido evaluada en diversos organismos acuáticos, entre ellos la trucha arcoíris, en cuyo ensayo determinaron que la mitad de los componentes del lodo evaluado son altamente tóxicos, presentándose una concentración letal (LE 50 ) < 1000 ppm (Ferrante, 1981). En Colombia también se ha evaluado la toxicidad aguda de seis lodos de perforación en postlarvas de Litopenaeus vannamei, demostrando que la concentración letal media (CL 50 ) a 96 h para lodos en base agua va entre 4224 ppm y 26635 ppm y entre 40781 ppm y 308248 ppm para los de base sintética (Contreras-León et al, 2013).…”

Section: Introductionunclassified

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Evaluación De La Toxicidad Aguda De Un Fluido De Exploración Offshore en La Fecundación Del Erizo De Mar Lytechinus Variegatus

Benavides

Santos-Acevedo

Cerón

et al. 2016

BIM

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In Colombia, oil industry is interested in developing offshore hydrocarbon exploration, activity that causes spills of harmful substances in marine areas. It is essential to understand the effects that those substances may cause in native organisms in the inflence zones. This manuscript proposes an assay with an autochthonous organism from the Colombian Caribbean, that may be used as a bioindicator of contamination. The acute toxicity (CE50) of a flid used in offshore exploration was assessed on basis on the fecundity of the sea urchin Lytechinus variegatus, using as a standard toxic pentahydrated cooper sulfate. The protocol for obtaining the gametes and fecundation was previously standardized with the reference toxic which is used to guarantee and validate its results in terms of effective concentration (CE50). The fecundation percentage should be greater than 85% in order to validate the assay in the control treatment, that was carried out by fecundating 2000 oocytes with 50 x 106 sperms. In each replicate 200 oocytes (10%) were counted in order to determine the percentage of fecundation. The obtained CE50 value of pentahydrate copper sulphate was 20.45 ± 1.90 mg.L-1 and 3649 mg.L-1 ± 400 mg.L-1 corresponding to the suspended particulate phase of mud, which was prepared from a mud-water relationship of 1:9 (v/v). The results show a high sensitivity degree of the L. variegatus gametes to the action of the drilling mud of offshore hydrocarbon exploration, which shows the sensitivity of the test organism to these substances and its potential use as bioindicator of pollution.

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Section: Discussionunclassified

Section: Introductionunclassified

Evaluación De La Toxicidad Aguda De Un Fluido De Exploración Offshore en La Fecundación Del Erizo De Mar Lytechinus Variegatus

Benavides

Santos-Acevedo

Cerón

et al. 2016

BIM

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“…This species is widely distributed in the Caribbean; it is a commercially important species in Colombia, and the technology for culturing and reproduction in laboratories has already been established. The shrimp species Litopenaeus vannamei was also used in Colombia for short-term toxicity tests of drilling fluids (WBFs and SBFs) (Contreras-León et al, 2013). The species is distributed from southern Mexico to northern Peru and represents an important portion of the industrial and artisanal fishery industry of the Colombian Pacific coast.…”

Section: Test Organismsmentioning

confidence: 99%

“…WBF prevents the fertilization of Echinodermata gametes after 1 h of exposure to 3,649 ± 400 mg L -1 (Benavides et al, 2014). The LC 50 (96 h) in post-larvae crustaceans varied from 4,224 ppm of WBF to 308,248 ppm of SBF (Contreras-León et al, 2013), indicating the higher toxicity of WBF (Table 4). Juveniles mollusks were less sensitive than were crustaceans, with an LC 50 (96 h) that varied from 9,113 ppm of WBF to > 1,000,000 ppm of SBF (Rodríguez-Satizábalet al, 2015), while juveniles crustaceans may be sensitive to 12,000 pp of SBF (Yan et al, 2003) (Table 4).…”

Section: Acute Effectsmentioning

confidence: 99%

“…Drilling is one of the main activities used for mineral exploration, including oil, which requires circulating fluids (i.e., drilling fluids or muds) in the borehole for formationcutting stabilization, lifting, and suspension, and for hole cleaning, bit cooling, surface pressure control, and drill string lubrication (Gandhi & Sarkar, 2016). Different kinds of drilling fluids may be used, including water, bentonite mud, cutting oil, and polymers, which are categorized (according to their main component) as water-based fluids (WBFs), oil-based fluids (OBFs) (Gandhi & Sarkar, 2016), or syntheticbased fluids (SBFs) (Vincent-Akpuetal., 2010;Contreras-León et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Toxicity of drilling fluids in aquatic organisms: a review

Aslan¹,

Weber²,

Iannacone³

et al. 2019

Ecotoxicol. Environ. Contam.

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Offshore oil-well drilling has been a subject of great interest to environmental regulatory agencies worldwide. The drilling fluids used in this process involve a complex mixture of chemicals and are largely discharged into the ocean. Acute and chronic toxicity tests have been done to better understand the effects of different types of drilling fluids on aquatic organisms. The aim of this article was to analyze all the studies related to the toxicity of drilling fluids published during the period of 2000 to 2017 by conducting a thorough review through the Scopus and Science Direct databases. Out of 154 articles, only 25 showed relevant information about the toxicity of drilling fluids. Acute toxicity tests were the predominant tests employed, appearing in 56% of the articles. Invertebrates were the most evaluated taxa, used in 64% of cases and represented mainly by Crustacea (32%), Mollusca (16%), and other invertebrates. Vertebrates were represented only by fish, constituting 32% of the cases. Water-based drilling fluids (WBFs) (32%) were the most frequently tested, followed by synthetic-based fluids or muds (SBFs) (24%) and oil-based fluids (OBFs) (16%). Individual components were tested in 12% of the cases, while 16% of studies included more than one type of drilling fluid. After analyzing the toxicity of drilling fluids and the sensitivity of aquatic organisms presented in 25 articles published in scientific journals, we concluded that WBFs-showing, in general, lower values of median lethal concentrations than do natural oil-and SBFs-are the most toxic drilling fluids to invertebrates in the short term. The gaps of information found in this review indicate that future studies need to address the acute and chronic effects of WBFs in both juvenile and adult fish and in other vertebrates; they also need to address the chronic effects of nonaqueous-based fluids on adult invertebrates. As crustaceans are more sensitive to drilling fluids than are mollusks, it is also recommended that they be used in future studies.

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