TOXOPATHOLOGICAL EFFECTS OF SOME ENVIRONMENTAL POLLUTANTS ON OREOCHROMOUS NILOTICUS GILLS التأثيرات الباثولوجية لبعض الملوثات على خياشيم أسماک البلطى النيلى

Document Type : Original Article

Abstract

ABSTRACT :
Total of 140 fish (5-10 g) (Oreochroms niloticus) were obtained from Assiut Univ. Fish
Rearing Farm. Fish were acclimatized and divided into 7 groups (20 each). Fish groups
were exposed to LC50 of copper sulfate (31.9 ppm), Baylucide (0.3125 ppm), Lead acetate
(43.6 ppm), Sulfuric acid (LpH 4.075), Ammonia (0.53 mg/L), Upper incipionic Lethal
Temp (UILT 35°C) and the seventh group was kept as control. The symptoms and post
mortem findings were recorded. The gills were removed and prepared for scanning,
semithin and transmission electron microscopic examination. Changes of different types
were observed in the morphology of the covering epithelium in the gill filaments and
secondary lamellae, the results were discussed.
الملخص :
تم أقلمة عدد ١٤٠ من أسماک البلطى النيلى ١٠-٥ جم ، وقسمت إلى سبع مجموعات تم تعѧريض
ستة منھا إلى الجرعة نصف المميتة مѧن کبريتѧات النحѧاس (٣١٫٩ جѧزء فѧى المليѧون) ، مبيѧد القواقѧع
بايلوسѧѧيد (٠٫٣١٢٥ جѧѧزء فѧѧى المليѧѧون ) ، خѧѧالت الرصѧѧاص (٤٣٫٦ جѧѧزء فѧѧى المليѧѧون) حѧѧامض
الکبريتيѧѧک بدرجѧѧة حموضѧѧة (٤٫٠٧٥) ، أمونيѧѧا (٠٫٥٣ ملليجѧѧرام لکѧѧل لتѧѧر) ، ولدرجѧѧة حѧѧرارة بدائيѧѧة
مميتѧѧة عليѧѧا (٣٥م) ، وترکѧѧت المجموعѧѧة السѧѧابعة کضѧѧابط للتجربѧѧة . وتѧѧم تسѧѧجيل األعѧѧراض والصѧѧفة
التشريحية ، وأخذت العينѧات وتѧم تجھيزھѧا للفحѧص الميکروسѧکوبى الضѧوئى والمسѧاح األلکترونѧى ،
وتم تسجيل النتائج ومناقشتھا

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