کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
2583860 | 1130705 | 2009 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Histopathological changes in the reproductive system (ovaries and testes) of Oreochromis mossambicus following exposure to DDT
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
بهداشت، سم شناسی و جهش زایی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Histopathological changes in the reproductive system (ovaries and testes) of Oreochromis mossambicus following exposure to DDT Histopathological changes in the reproductive system (ovaries and testes) of Oreochromis mossambicus following exposure to DDT](/preview/png/2583860.png)
چکیده انگلیسی
This study assesses the effects of 1,1-bis (4-chlorophenyl)-2,2,2-trichloroethane (DDT) on the reproduction and gonadal histology of adult Mozambique tipalia (Oreochromis mossambicus). The fish were allowed to breed, following exposure to 2 and 5 μg/l of waterborne technical-grade DDT for 40 days. Fertilized eggs were artificially incubated. In the 5 μg/l exposure, posthatch survival was significantly lower, and prevalence of larval skeletal deformities significantly higher, compared to the control (p < 0.05). Incomplete axial development was the common gross deformity in posthatch larvae, caused by failure to develop chondroblasts posterior to the buccopharyngeal cavity. There were no significant differences in the gonadosomatic index of exposed and non-exposed male and female adults. The exposure caused increased oocyte atresia in the ovaries and disorganization of seminiferous lobules in the testes of adults. DDT exposure reduced survival and increased deformities in larvae, at levels that did not cause severe histopathological changes to parental gonads.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Environmental Toxicology and Pharmacology - Volume 28, Issue 1, July 2009, Pages 133-139
Journal: Environmental Toxicology and Pharmacology - Volume 28, Issue 1, July 2009, Pages 133-139
نویسندگان
Sibonani S. Mlambo, Johan H.J. van Vuren, Irene E.J. Barnhoorn, Maria S. Bornman,