Alterações hematológicas e hormonais em fêmeas de jundiá (Rhamdia quelen) provocadas por estresse mecânico e contaminação da água por herbicida a base de glifosato
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Data
2006-05-05
Autores
Soso, Auren Benck [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
O presente estudo teve o objetivo de analisar os possíveis distúrbios que o estresse e a contaminação da água com herbicida a base de glifosato acarretam ao organismo de fêmeas de jundiá (Rhamdía quelen) em período de maturação gonadal. Foram utilizados dois tratamentos (glifosato - GG e estresse - GE) e um grupo controle (GC), todos em duplicata. Os peixes pesavam entre 200 e 600 g, e tinham idade média de 8 meses. Foram mantidos em tanque escavados de 100m2, com densidade de um peixe/2m2 e renovação de água de 6 L/min, que propiciaram ao experimento condições semelhantes às condições de produção. O estresse utilizado nos peixes foi o de agitação. A concentração de glifosato aplicada nos tanques foi de 3,6 mg/L. Foram realizadas cinco coletas de sangue a cada dez dias, para hematologia e perfis hormonal e bioquímico. Na primeira coleta ocorreu um aumento no número de eritrócitos do GE com relação ao GC e GG (GE 281,06; GC 217,06 e GG 187,67 104/IJL, respectivamente). Ocorreu a diminuição dos valores da taxa de hemoglobina do GG na terceira e quinta coleta (GG 7,7 - 8,73; GC 9,56- 10,75 e GF 9,38 – 924, mg/dl, respectivamente). O hematócrito demonstrou aumento no GG em relação aos demais grupos na quarta coleta (GG 44,06), (GC 34,43 e GE 40%, respectivamente). O volume globular médio (VGM) apresentou-se diminuído no GE na primeira coleta quando comparado com os demais grupos (GE 140,77; GC 164,45 e GG 2002,99 pg, respectivamente). Os valores da concentração de hemoglobina globular média (CHGM) não tiveram diferença significativa entre os grupos. A hemoglobina globular média (HGM) do GG demonstrou aumento significativo em relação ao GC (GG 42,3; GC 36,56 e GE 39,06 fl, respectivamente). Os índices gonadossomático (IGS) e índice hepatossomático (IHS) não demonstraram diferenças significativas entre os grupos testados...
The present study aimed to analyze the possible disturbs that the stress and the water contamination of with glyphosate-based herbicides may cause to the organism of females of jundiá (Rhamdia quelen) during the period of gonadal maturation. Two treatments had been used (glyphosate - GG and stress - EG) and a group was used as control (CG), ali in duplicate. The fish weighed between 200 and 600 g, and had average age of 8 months. They were kept in earthern ponds of 100m2, with a density of one fishJm2, and water renewal in a rate of 6L1min, that had propitiated to the experiment similar conditions to the field conditions. As stressor for the fish was used the water agitation. The concentration af glyphosate based herbicide applied in the tanks was 3.6mg/L. Five blood samples were collected with 10-day interval and used for hormonal, hematologyc and serum biochemistry determinations. In the first sample time an increase in title number of RBC of EG was found in relation to CG and GG (EG 281.06, CG 217.06 and GG 187.67 104 mL respectively). The reduction of the values of the hemoglobin content of the GG group was foundin third and fifth sample time (GG 7.7 - 8.73; CG 9.56- 10.75 and EG 9.38 - 9.24 mg/dL, respectively). The hematocrit had demonstrated an increase in the GG group in relation to EG and CG groups: in the fourth collection (GG 44.06, CG 34.43 and EG 40 %, respectively). The medium globular volume (VGM) was diminished in EG in the first sample when compared with other treatments (EG 14077; CG 164.45 and GG 2002.99 pg, respectively). The values of the medium concentration of globular hemoglobin (CHGM) had not demonstrated significant difference between the groups. The medium globular hemoglobin (HGM) of the GG demonstrated significant increase in relation to CG (GG 42.3; GC 36.56 and EG 39.06 fl, respectively). The gonadossomatic index (GSI) and hepatossomatic index (HSI) had not demonstrated ....
The present study aimed to analyze the possible disturbs that the stress and the water contamination of with glyphosate-based herbicides may cause to the organism of females of jundiá (Rhamdia quelen) during the period of gonadal maturation. Two treatments had been used (glyphosate - GG and stress - EG) and a group was used as control (CG), ali in duplicate. The fish weighed between 200 and 600 g, and had average age of 8 months. They were kept in earthern ponds of 100m2, with a density of one fishJm2, and water renewal in a rate of 6L1min, that had propitiated to the experiment similar conditions to the field conditions. As stressor for the fish was used the water agitation. The concentration af glyphosate based herbicide applied in the tanks was 3.6mg/L. Five blood samples were collected with 10-day interval and used for hormonal, hematologyc and serum biochemistry determinations. In the first sample time an increase in title number of RBC of EG was found in relation to CG and GG (EG 281.06, CG 217.06 and GG 187.67 104 mL respectively). The reduction of the values of the hemoglobin content of the GG group was foundin third and fifth sample time (GG 7.7 - 8.73; CG 9.56- 10.75 and EG 9.38 - 9.24 mg/dL, respectively). The hematocrit had demonstrated an increase in the GG group in relation to EG and CG groups: in the fourth collection (GG 44.06, CG 34.43 and EG 40 %, respectively). The medium globular volume (VGM) was diminished in EG in the first sample when compared with other treatments (EG 14077; CG 164.45 and GG 2002.99 pg, respectively). The values of the medium concentration of globular hemoglobin (CHGM) had not demonstrated significant difference between the groups. The medium globular hemoglobin (HGM) of the GG demonstrated significant increase in relation to CG (GG 42.3; GC 36.56 and EG 39.06 fl, respectively). The gonadossomatic index (GSI) and hepatossomatic index (HSI) had not demonstrated ....
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Palavras-chave
Hematologia, Rhamdia quelen, Estresse e glifosato, Rhamdia quelen, Stress, glyphosate, Hematology, Hormonal profile
Como citar
SOSO, Auren Benck. Alterações hematológicas e hormonais em fêmeas de jundiá (Rhamdia quelen) provocadas por estresse mecânico e contaminação da água por herbicida a base de glifosato. 2006. iv, 62 f. Dissertação (mestrado) - Universidade Estadual Paulista, Centro de Aqüicultura, 2006.