Gill histology of nile tilapia Oreochromis niloticus following chronic and acute exposure to ammonia
Other Title(s)
دراسة أنسجة خياشيم سمك البلطي النيلي Oreochromis niloticus بعد التعرض المزمن و الحاد للأمونيا
Joint Authors
Yoon, Gilha
al-Sadi, Najiya
Ambuali, Aishah
Source
Agricultural and Marine Sciences : Research Journal
Issue
Vol. 19, Issue 1 (31 Dec. 2015), pp.66-72, 7 p.
Publisher
Sultan Qaboos University College of Agricultural and Marine Sciences
Publication Date
2015-12-31
Country of Publication
Oman
No. of Pages
7
Main Subjects
Natural & Life Sciences (Multidisciplinary)
Abstract EN
Ammonia is a common aquatic pollutant and is toxic to fish.
The main nitrogenous compound excreted by fish is also ammonia, which may reach toxic concentrations in high-density fish culture, reducing growth and productivity.
In this study, changes in gill structure and mucus cell distribution were examined when juvenile Nile tilapia, Oreochromis niloticus, were exposed to chronic and acute concentrations of ammonia.
For chronic exposure, the tilapia were exposed to daily increments in ammonia concentration rising from 0 mg L-1 ammonia on Day 0 to 5 mg L-1 by Day 8; the experiment was terminated on Day 9.
There were obvious histopathological changes to the gills over this period including hypertrophy and fusion and of the secondary lamellae.
The mucus cell number in gill histology sections were observed to increase until Day 6 then decrease thereafter until the termination of the trial.
For the acute exposure, juvenile tilapia were exposed to 5 mg L-1 ammonia for 5 hours.
Hourly changes to the gills were monitored, with notable changes to gill filaments and an observed increase in the mucus cell number over the duration of the experiment.
American Psychological Association (APA)
Yoon, Gilha& al-Sadi, Najiya& Ambuali, Aishah. 2015. Gill histology of nile tilapia Oreochromis niloticus following chronic and acute exposure to ammonia. Agricultural and Marine Sciences : Research Journal،Vol. 19, no. 1, pp.66-72.
https://search.emarefa.net/detail/BIM-710031
Modern Language Association (MLA)
Yoon, Gilha…[et al.]. Gill histology of nile tilapia Oreochromis niloticus following chronic and acute exposure to ammonia. Agricultural and Marine Sciences : Research Journal Vol. 19, no. 1 (2015), pp.66-72.
https://search.emarefa.net/detail/BIM-710031
American Medical Association (AMA)
Yoon, Gilha& al-Sadi, Najiya& Ambuali, Aishah. Gill histology of nile tilapia Oreochromis niloticus following chronic and acute exposure to ammonia. Agricultural and Marine Sciences : Research Journal. 2015. Vol. 19, no. 1, pp.66-72.
https://search.emarefa.net/detail/BIM-710031
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 71-72
Record ID
BIM-710031