NDLI: Efecto tóxico de DDT y endosulfan en postlarvas de camarón blanco, Litopenaeus vannamei (Decapoda: Penaeidae) de Chiapas, México

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Efecto tóxico de DDT y endosulfan en postlarvas de camarón blanco, Litopenaeus vannamei (Decapoda: Penaeidae) de Chiapas, México

Content Provider	Semantic Scholar
Author	Castro-Castro, Vicente Siu-Rodas, Yadira González-Huerta, Luz V. Sokolov, Mikhail Y.
Copyright Year	2005
Abstract	Toxic efect of DDT and endosulfan in white shrimp postlarvae Litopenaeus vannamei (Decapoda: Penaeidae) from Chiapas, Mexico. We analized acute toxicity in white shrimp (Litopenaeus vannamei) postlarvae exposed to two chlorinated pesticides, DDT and endosulfan, under laboratory conditions during 168 hours, with controlled temperature (29 ± 1°C), salinity (3 ±1‰) and pH (8 ± 1). Median lethal concentrations (LC 50 ), "incipient" LC 50 , median lethal time (LT 50 ) the "maximum acceptable concentration of the toxic compound" (MACT) and "the safety level" (SL) were determined. The concentration of the compounds at which organism growth was reduced by 5 and 50% (EC 5 and EC 50 ), as well as changes in oxygen consumption patterns were determined in the surviving postlarvae. They were very sensitive to both compounds and DDT was thrice as toxic as endosulfan. Growth rate decreased 50 % and 80 % with endosulfan and DDT, respectively, at the experimental pestice concentration. The low resistance of postlarvae to DDT and endosulfan suggests that additional inflow of these pesticides into the aquatic system could affect the rate of shrimp production in the area. Rev. Biol. Trop. 53(1-2): 141-151. Epub 2005 Jun 24.
Starting Page	141
Ending Page	151
Page Count	11
File Format	PDF HTM / HTML
DOI	10.15517/rbt.v53i1-2.14407
Volume Number	53
Alternate Webpage(s)	https://revistas.ucr.ac.cr/index.php/rbt/article/download/14407/13703
Alternate Webpage(s)	https://doi.org/10.15517/rbt.v53i1-2.14407
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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