Thiodan® insecticide on the follicular development of lambaris/ O inseticida Thiodan® sobre o desenvolvimento folicular de lambaris

Thiodan® insecticide on the follicular development of lambaris/ O inseticida Thiodan® sobre o desenvolvimento folicular de lambaris

Thiodan® is an organochlorine based in endosulfan which can cause morphological changes in fish tissues exposed to it depending on the concentration and exposure time. This study aimed to determine the [LC.sub.50]-96h of Thiodan® (350g [L.sup.-1] endosulfan) for lambaris females of Astyanax bimacula...

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Veröffentlicht in:Ciência rural 2014-12, Vol.44 (12), p.2245
Hauptverfasser: Marcon, Lucas, Filho, Paulo Burlamaqui da Silva, Lopes, Diego Senra, Mounteer, Ann Honor, Benjamin, Laercio dos Anjos
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Insecticides
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container_issue 12
container_start_page 2245
container_title Ciência rural
container_volume 44
creator Marcon, Lucas
Filho, Paulo Burlamaqui da Silva
Lopes, Diego Senra
Mounteer, Ann Honor
Benjamin, Laercio dos Anjos
description Thiodan® is an organochlorine based in endosulfan which can cause morphological changes in fish tissues exposed to it depending on the concentration and exposure time. This study aimed to determine the [LC.sub.50]-96h of Thiodan® (350g [L.sup.-1] endosulfan) for lambaris females of Astyanax bimaculatus in a reproduction period and analyze the morphology of follicular development in different experiments. Four experiments were performed: without adaptation and no feeding, feeding without adaptation, with adaptation and without feeding, with adaptation and feeding. The [LC.sub.50]-96h determined was 13.6 µg [L.sup.-1], with a confidence interval from 10.1 to 18.4 µg [L.sup.-1] (P
doi_str_mv 10.1590/0103-8478cr20140400
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This study aimed to determine the [LC.sub.50]-96h of Thiodan® (350g [L.sup.-1] endosulfan) for lambaris females of Astyanax bimaculatus in a reproduction period and analyze the morphology of follicular development in different experiments. Four experiments were performed: without adaptation and no feeding, feeding without adaptation, with adaptation and without feeding, with adaptation and feeding. The [LC.sub.50]-96h determined was 13.6 µg [L.sup.-1], with a confidence interval from 10.1 to 18.4 µg [L.sup.-1] (P&lt;0.05). The lambaris were exposed to Thiodan® for 96 hours in three sub-lethal concentrations of 1.15, 2.3 and 5.6 µg [L.sup.-1] and without pesticides control group. Morphologically, it was noted that the action of Thiodan® in sub-lethal concentrations did not alter the morphology of follicular development. However, the follicular diameter in secondary follicles in the experiment with adaptation and feeding exposed to Thiodan® was higher relative to the control group (P&lt;0.05). These data suggest that reproduction may be affected by chemical and can cause impairment in the follicular development. Key words: Astyanax bimaculatus, environment, ovary, follicles. O Thiodan® e um organoclorado a base de endosulfan que pode causar alteracoes morfologicas nos tecidos de peixes, dependendo da concentracao e tempo de exposicao. Este estudo teve como objetivo determinar a [CL.sub.50]-96h do Thiodan® (endosulfan 350g [L.sup.-1]) para femeas de lambaris Astyanax bimaculatus em periodo de reproducao e analisar a morfologia do desenvolvimento folicular em diferentes concentracoes do agrotoxico. Foram feitos quatro experimentos: 1) sem aclimatacao e sem alimentacao; 2) sem aclimatacao e alimentados; 3) com aclimatacao de 10 dias e sem alimentacao; 4) com aclimatacao de 10 dias e alimentados. A [CL.sub.50]-96h determinada foi de 13,6 µg [L.sup.-1], com intervalo de confianca de 10,1 a 18,4 µg [L.sup.-1] (P&lt;0,05). Em todos os experimentos, foram utilizadas tres concentracoes diferentes do Thiodan® inferiores a [CL.sub.50]-96h pre-determinada em laboratorio de acordo com a NBR 15088 (ABNT, 2007). Os lambaris foram expostos ao Thiodan® por 96 horas em tres concentracoes subletais de 1,15; 2,3 e 5,6 µg [L.sup.-1] e um grupo controle, livre de agrotoxico. Morfologicamente, percebeu-se que a acao do Thiodan® nas concentracoes subletais nao alterou a morfologia do desenvolvimento folicular. Porem, o diametro folicular nos foliculos secundarios no experimento com aclimatacao/com alimentacao expostos ao Thiodan® foi maior em relacao ao grupo controle (P&lt;0,05). Esses dados sugerem que a reproducao pode ser afetada pelo produto quimico e pode causar comprometimento no desenvolvimento folicular. Palavras-chave: Astyanax bimaculatus, meio ambiente, ovario, foliculos.</description><identifier>ISSN: 0103-8478</identifier><identifier>DOI: 10.1590/0103-8478cr20140400</identifier><language>spa</language><publisher>Universidade Federal de Santa Maria</publisher><subject>Analysis ; Fishes ; Insecticides</subject><ispartof>Ciência rural, 2014-12, Vol.44 (12), p.2245</ispartof><rights>COPYRIGHT 2014 Universidade Federal de Santa Maria</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,860,27901,27902</link.rule.ids></links><search><creatorcontrib>Marcon, Lucas</creatorcontrib><creatorcontrib>Filho, Paulo Burlamaqui da Silva</creatorcontrib><creatorcontrib>Lopes, Diego Senra</creatorcontrib><creatorcontrib>Mounteer, Ann Honor</creatorcontrib><creatorcontrib>Benjamin, Laercio dos Anjos</creatorcontrib><title>Thiodan® insecticide on the follicular development of lambaris/ O inseticida Thiodan® sobre o desenvolvimento folicular de lambaris</title><title>Ciência rural</title><description>Thiodan® is an organochlorine based in endosulfan which can cause morphological changes in fish tissues exposed to it depending on the concentration and exposure time. This study aimed to determine the [LC.sub.50]-96h of Thiodan® (350g [L.sup.-1] endosulfan) for lambaris females of Astyanax bimaculatus in a reproduction period and analyze the morphology of follicular development in different experiments. Four experiments were performed: without adaptation and no feeding, feeding without adaptation, with adaptation and without feeding, with adaptation and feeding. The [LC.sub.50]-96h determined was 13.6 µg [L.sup.-1], with a confidence interval from 10.1 to 18.4 µg [L.sup.-1] (P&lt;0.05). The lambaris were exposed to Thiodan® for 96 hours in three sub-lethal concentrations of 1.15, 2.3 and 5.6 µg [L.sup.-1] and without pesticides control group. Morphologically, it was noted that the action of Thiodan® in sub-lethal concentrations did not alter the morphology of follicular development. However, the follicular diameter in secondary follicles in the experiment with adaptation and feeding exposed to Thiodan® was higher relative to the control group (P&lt;0.05). These data suggest that reproduction may be affected by chemical and can cause impairment in the follicular development. Key words: Astyanax bimaculatus, environment, ovary, follicles. O Thiodan® e um organoclorado a base de endosulfan que pode causar alteracoes morfologicas nos tecidos de peixes, dependendo da concentracao e tempo de exposicao. Este estudo teve como objetivo determinar a [CL.sub.50]-96h do Thiodan® (endosulfan 350g [L.sup.-1]) para femeas de lambaris Astyanax bimaculatus em periodo de reproducao e analisar a morfologia do desenvolvimento folicular em diferentes concentracoes do agrotoxico. Foram feitos quatro experimentos: 1) sem aclimatacao e sem alimentacao; 2) sem aclimatacao e alimentados; 3) com aclimatacao de 10 dias e sem alimentacao; 4) com aclimatacao de 10 dias e alimentados. A [CL.sub.50]-96h determinada foi de 13,6 µg [L.sup.-1], com intervalo de confianca de 10,1 a 18,4 µg [L.sup.-1] (P&lt;0,05). Em todos os experimentos, foram utilizadas tres concentracoes diferentes do Thiodan® inferiores a [CL.sub.50]-96h pre-determinada em laboratorio de acordo com a NBR 15088 (ABNT, 2007). Os lambaris foram expostos ao Thiodan® por 96 horas em tres concentracoes subletais de 1,15; 2,3 e 5,6 µg [L.sup.-1] e um grupo controle, livre de agrotoxico. Morfologicamente, percebeu-se que a acao do Thiodan® nas concentracoes subletais nao alterou a morfologia do desenvolvimento folicular. Porem, o diametro folicular nos foliculos secundarios no experimento com aclimatacao/com alimentacao expostos ao Thiodan® foi maior em relacao ao grupo controle (P&lt;0,05). Esses dados sugerem que a reproducao pode ser afetada pelo produto quimico e pode causar comprometimento no desenvolvimento folicular. 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This study aimed to determine the [LC.sub.50]-96h of Thiodan® (350g [L.sup.-1] endosulfan) for lambaris females of Astyanax bimaculatus in a reproduction period and analyze the morphology of follicular development in different experiments. Four experiments were performed: without adaptation and no feeding, feeding without adaptation, with adaptation and without feeding, with adaptation and feeding. The [LC.sub.50]-96h determined was 13.6 µg [L.sup.-1], with a confidence interval from 10.1 to 18.4 µg [L.sup.-1] (P&lt;0.05). The lambaris were exposed to Thiodan® for 96 hours in three sub-lethal concentrations of 1.15, 2.3 and 5.6 µg [L.sup.-1] and without pesticides control group. Morphologically, it was noted that the action of Thiodan® in sub-lethal concentrations did not alter the morphology of follicular development. However, the follicular diameter in secondary follicles in the experiment with adaptation and feeding exposed to Thiodan® was higher relative to the control group (P&lt;0.05). These data suggest that reproduction may be affected by chemical and can cause impairment in the follicular development. Key words: Astyanax bimaculatus, environment, ovary, follicles. O Thiodan® e um organoclorado a base de endosulfan que pode causar alteracoes morfologicas nos tecidos de peixes, dependendo da concentracao e tempo de exposicao. Este estudo teve como objetivo determinar a [CL.sub.50]-96h do Thiodan® (endosulfan 350g [L.sup.-1]) para femeas de lambaris Astyanax bimaculatus em periodo de reproducao e analisar a morfologia do desenvolvimento folicular em diferentes concentracoes do agrotoxico. Foram feitos quatro experimentos: 1) sem aclimatacao e sem alimentacao; 2) sem aclimatacao e alimentados; 3) com aclimatacao de 10 dias e sem alimentacao; 4) com aclimatacao de 10 dias e alimentados. A [CL.sub.50]-96h determinada foi de 13,6 µg [L.sup.-1], com intervalo de confianca de 10,1 a 18,4 µg [L.sup.-1] (P&lt;0,05). Em todos os experimentos, foram utilizadas tres concentracoes diferentes do Thiodan® inferiores a [CL.sub.50]-96h pre-determinada em laboratorio de acordo com a NBR 15088 (ABNT, 2007). Os lambaris foram expostos ao Thiodan® por 96 horas em tres concentracoes subletais de 1,15; 2,3 e 5,6 µg [L.sup.-1] e um grupo controle, livre de agrotoxico. Morfologicamente, percebeu-se que a acao do Thiodan® nas concentracoes subletais nao alterou a morfologia do desenvolvimento folicular. Porem, o diametro folicular nos foliculos secundarios no experimento com aclimatacao/com alimentacao expostos ao Thiodan® foi maior em relacao ao grupo controle (P&lt;0,05). Esses dados sugerem que a reproducao pode ser afetada pelo produto quimico e pode causar comprometimento no desenvolvimento folicular. Palavras-chave: Astyanax bimaculatus, meio ambiente, ovario, foliculos.</abstract><pub>Universidade Federal de Santa Maria</pub><doi>10.1590/0103-8478cr20140400</doi></addata></record>
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subjects Analysis
Fishes
Insecticides
title Thiodan® insecticide on the follicular development of lambaris/ O inseticida Thiodan® sobre o desenvolvimento folicular de lambaris
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