مقالههای 1M.B. Hafiz
توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقالههای نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده میشوند.
۱Effect of Androgen Hormone, Testosterone Undecanoate on the Banana Shrimp, Fenneropenaeus Merguiensis (De Man, 1888) Postlarvae
اطلاعات انتشار: World Applied Sciences Journal، بيست و هشتم،شماره۸، ۲۰۱۳، سال ۰
تعداد صفحات: ۷
This study was done to determine the effect of different concentrations of androgen hormone, Testosterone Undecanaote (TU) on the size increments, specific growth rate, survival rate, sex differentiation and sex ratio of banana shrimp, Fenneropenaeus merguiensis postlarvae. The experiment was carried out with different concentrations of TU (0, 200, 400, 600, 800 and 1000 mg\kg TU) which incorporated in the diet that wasfed to PL 1 of F. merguiensis for 50 days study period. ANOVA analyzed showed that the mean size increments of body weight and total length, mean specific growth rate (SGR) of body weight and total length was significant different (p0.05) among the different treatments. The highest mean percentage of survival rate was recorded for control (0 mg\kg TU) at 43.33 ± 4.41 % while the lowest mean percentages was recorded for 1000 mg\kg TU at 18.34+2.89. External sex differentiation of male F. merguiensis PL50 could be identified with the appearance of appendix masculine (AM) development at the second pair of pleopods and development of male gonophores complex (MG) at the fifth pereiopods and early male petasma development (endopodite without setae) at the first pair pleopods. In this experiment, 100% male was produced by every treatment from 200 mg\kg TU to 1000 mg\kg TU. The usage of androgen hormone TU can be an effective method for the production of 100% male F. merguiensis PL at least at the concentration of 200 mg\kg TU.
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