EFFECT OF SALINITY ON PROLACTIN AND GROWTH HORMONE CELL ACTIVITY IN THE PITUITARY GLAND OF MUGIL CEPHALUS | ||
| Egyptian Journal of Aquatic Biology and Fisheries | ||
| Article 6, Volume 3, Issue 2, April 1999, Pages 85-101 | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejabf.1999.3419 | ||
| Authors | ||
| Mostafa Mousa1; Abdalla EI-Shebly2; Mohamed Khalil3 | ||
| 1National Institute of Oceanography and Fisheries, Alexandria, Egypt. | ||
| 2National Institute of Oceanography and Fisheries, Alexandria,Egypt. | ||
| 3Zoology Department, Faculty of Science, South Valley University,Aswan, Egypt. | ||
| Abstract | ||
| The influence of the environmental salinity on the prolactin (PRL) and growth hormone (GH) cells of the adenohypophysis of the grey mullet (Mugil cephalus) adapted to seawater (SW, 35 ‰) and fresh water (FW, 0-0.5 ‰) has been studied by immunocytochemical technique. The results indicated that PRL and GH cells of fish adapted to FW occupied a greater hypophysial region and have larger nuclear areas than those of SW-adapted fish. In addition, the activity of both PRL and GH cells in FW ponds was higher than those of SW ponds. Consequently, the FW-adapted fish exhibiting higher condition factor (1.05 in FW, 0.96 in SW) and with higher percentage of protein content (61.41 % in FW, 48.23 % in SW). | ||
| Keywords | ||
| lmmunocytochemistry; prolactin; Growth hormone; Pituitary gland; salinity; Mugil cephalus (Teleostei) | ||
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