Specimens of either sex of the freshwater catfish, Clarias batrachus, were exposed to safe and sublethal concentrations of gamma-BHC (2 and 8 ppm) and cythion (1 and 4 ppm) for 4 weeks during different phases of annual reproductive cycle. Their effects on free fatty acids (FFA) and acyl glycerides, viz., monoglycerides (MG), diglycerides (DG), and triglycerides (TG), were studied in liver, plasma, gonads, and muscle. During the preparatory phase, both pesticides suppressed the levels of FFA and acylglycerides (MG, DG, and TG) in liver of either sex but had no effect on their levels in plasma, ovary, and muscle; however, FFA and TG were reduced in testis. Unlike the preparatory phase, in the prespawning phase different lipids responded variedly to the concentrations of both Cythion and gamma-BHC. In the female, FFA in liver and plasma was raised but in ovary and muscle it was decreased. Acylglycerides in studied tissues were also reduced except ovarian TG which was increased by both pesticides at safe concentrations. Contrary to this, in the male these lipids were raised in liver and testis. Moreover, during the spawning phase, these pesticides enhanced the hepatic FFA together with acylglycerides in the female but failed to elicit any change in their levels in the male. Plasma levels of FFA and TG were reduced in the female; however, in the male FFA was raised and TG remained unchanged. Ovarian FFA and TG were decreased and increased, respectively. During the postspawning phase, none of the lipid fractions could be affected in the male except hepatic FFA which was reduced; however, in the female TG along with FFA was decreased.

译文

:在年度繁殖周期的不同阶段,淡水cat鱼的两栖标本都被暴露于安全和致死浓度的γ-BHC(2和8 ppm)和胱硫醚(1和4 ppm)的浓度达4周。在肝脏,血浆,性腺和肌肉中研究了它们对游离脂肪酸(FFA)和酰基甘油酯(即甘油一酸酯(MG​​),甘油二酸酯(DG)和甘油三酸酯(TG))的影响。在准备阶段,两种农药均抑制了男女肝脏中FFA和酰基甘油酯(MG,DG和TG)的含量,但对血浆,卵巢和肌肉的含量没有影响。但是,睾丸中的FFA和TG降低了。与准备阶段不同,在产卵阶段,不同的脂质对Cythion和γ-BHC的浓度都有不同的反应。在女性中,肝脏和血浆中的FFA升高,但在卵巢和肌肉中的FFA降低。被研究的组织中的甘油三酸酯也减少了,但卵巢TG却被安全浓度下的两种农药所增加。与此相反,在男性中,这些脂质在肝脏和睾丸中升高。而且,在产卵阶段,这些农药在雌性动物中增强了肝FFA和酰基甘油酯,但在雄性动物中并未引起其含量变化。女性血浆中FFA和TG含量降低;但是,雄性FFA升高了,TG保持不变。卵巢FFA和TG分别降低和升高。在产卵后阶段,除了肝脏中FFA含量降低外,其他脂类成分都不会受到影响。然而,女性TG与FFA一起下降。

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