. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 10 - DA TREATMENT 10 DA 10 'c DA Figure 2. Effect of different doses (1 x 10~8, 1 x 10~7, and 1 •> 10~6 mol per crayfish) of dopamine (DA) on the mean testicular lobe diameter of the crayfish. Proiwnharux darkii. 1C. initial control; SC. simultaneous control. Error bars are SEM. Bar SC is significantly larger (P < ) than bars 1C. lO'6 DA. and 10~7 DA. received 1 X 10~6 mol, 1 X 1(T7 mol, and 1 X 1(T8 mol DA per crayfish respectively in lOO/ul doses. Injections were administered on the 1st, 5th, and 10th days. The s
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 10 - DA TREATMENT 10 DA 10 'c DA Figure 2. Effect of different doses (1 x 10~8, 1 x 10~7, and 1 •> 10~6 mol per crayfish) of dopamine (DA) on the mean testicular lobe diameter of the crayfish. Proiwnharux darkii. 1C. initial control; SC. simultaneous control. Error bars are SEM. Bar SC is significantly larger (P < ) than bars 1C. lO'6 DA. and 10~7 DA. received 1 X 10~6 mol, 1 X 1(T7 mol, and 1 X 1(T8 mol DA per crayfish respectively in lOO/ul doses. Injections were administered on the 1st, 5th, and 10th days. The simultaneous control group and those given DA were sac- rificed on the 15th day and processed in the same manner as the initial control group. The TI and mean testicular lobe diameter of the si- multaneous control group were significantly larger than the corresponding values of the initial control group, showing that during the 15 days of the experiments the testes were undergoing maturation (Figs. 1,2). Further- more, the simultaneous control testes contained mature sperm whereas the initial control testes had none (Fig. 3). The TI and mean testicular lobe diameter of the crayfish that received 1 X 1(T6 mol DA injections were signifi- cantly smaller than the corresponding values for the si- multaneous control crayfish that received only physio- logical saline. Furthermore, there were no mature sperm in the testicular lobes of the crayfish that received the injections of 1 X 1CT6 mol DA in contrast to the simul- taneous control crayfish. The crayfish that received injec- tions of the two lower doses of DA (1 X 1(T7 mol and 1 X 10~8 mol) also had a smaller TI and mean testicular lobe diameter than the simultaneous control crayfish, but only the difference between the testicular lobe diameter of the simultaneous controls and the crayfish that received injections of 1 X 10 7 mol DA was statistically significant. The testes of the crayfish that received injections of the two lower
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
