TY  - JOUR
T1  - Effects of Freshwater and Seawater on Growth, Total Testosterone Levels and Testis Development of Tilapias
AU - , Tulay Altun AU - , Ercan Sarihan 
JO  - Journal of Animal and Veterinary Advances
VL  - 7
IS  - 6
SP  - 657
EP  - 662
PY  - 2008
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2008.657.662
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2008.657.662
KW  - Tilapia
KW  -growth
KW  -total testosterone
KW  -gonad
KW  -freshwater
KW  -seawater
AB  - Effects of freshwater and seawater on growth, total testosterone levels, testis development of <I>Oreochromis niloticus</I>, <I>Oreochromis aureus</I> and <I>Tilapia zilli</I> were determined in this study. Although seawater affected the growth of fishes positively (p&lt;0.05) and all testis development stages (immature, maturing and maturated) were observed in all species in seawater, total testosterone concentrations of the fishes grown in this environment did not reach the levels seen in the fishes grown in freshwater (p&lt;0.05). In addition, in seawater, gonad development was observed later and the last 2 gonadal stages were seen together in all species.
ER  -