E.O. AYOTUNDE, O.A. FAGBENRO, O.T. ADEBAYO

Histological changes in Oreochromis niloticus (linnaeus I779) exposed to aqueous extract of Moringa oleifera seeds powder

Bu çalışmada; Nijerya’da balık kültüründe su arıtıcısı olarak kullanılan doğal şapa bir alternatif olarak, toz halindeki Moringa oleifera tohumu kullanımının patolojik etkilerini tespit etmiştir. Statik deneme prosedüründe, farklı subletal konsantrasyonda Moringa oleifera tohumunun sulu ekstresine maruz kalan Nil tilapyası, Oreochromis niloticus yavru ve erginlerinin solungaç, deri ve böbreğindeki histolojik değişiklikler tespit edilmiştir. Solungaçta farklı seviyelerde hücre dejenerasyonu, lamellerde hiperemi, solungaç yayında hipertrofi, diğer taraftan hiperplazi, hepatik hücre düzensizliği, nekroz; balık karaciğerinde ve böbreğinde meydana gelen vakuolleşme gibi patolojik lezyonlar gözlenmiştir. M. Oleifera tohumunun sulu ekstresinin konsantrasyonunun ve maruz bırakılma süresinin artmasıyla farklı organlardaki hasarlar ağırlaşmıştır.

Anahtar Kelimeler:

solungaçlar, histopatoloji, hipertrofi, tohum, toksikoloji, Moringa oleifera, kültür balığı, hiperplazi, böbrekler, karaciğer, doku ölümü, bitki özütü, deri, toksisite, Oreochromis niloticus

Toz halindeki Moringa oleifera tohumunun sulu ekstresine maruz bırakılan Oreochromis niloticus’te (linnaeus 1779) histolojik değişiklikler

This research determined the pathological effects of Moringa oleifera seed powder, a natural alternative to alum, used as a water purifier in fish culture enclosure in Nigeria. The histological changes in gill, liver, skin and kidney of fingerling and adult Nile tilapia Oreochromis niloticus exposed to aqueous extract of Moringa oleifera seed at different sub-lethal concentration under static bioassay procedure are described. There were pathologic lesions observed which included different levels of cells degeneration in the gill, lamellar hyperemia; hypertrophy of gill arch occurred, while hyperplasia, disarrangement of hepatic cell, necrosis, and vacuolation occurred in fish liver and kidney. Damages of different organs became severe with increasing concentration of aqueous extract of M. oleifera seeds and time of exposure.

Keywords:

gills, histopathology, hypertrophy, seeds, toxicology, Moringa oleifera, fish culture, hyperplasia, kidneys, liver, necrosis, plant extracts, skin, toxicity, Oreochromis niloticus,

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