Immunohistochemical study of pituitary cells in wild and captive Salminus hilarii (Characiformes: Characidae) females during the annual reproductive cycle

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Table 1 Biometrical parameters in different environments, ovarian maturation stages and gonadosomatic index (GSI)

Environment	Maturation stage	N	Total length (cm)	Total weight (g)	Gonads weight (g)	GSI (%)
Wild	Previtellogenic	11	38.33 ± 3.47	574.33 ± 144.49	4.34 ± 1.33^a	0.76 ± 0.09^a
	Vitellogenic	11	42.37 ± 1.17^a*	945.17 ± 94.97	110.43 ± 21.96^b	11.41 ± 1.58^b
	Regression	4	47.50 ± 5.00	975.55 ± 153.25	30.89 ± 14.07^ab	2.24 ± 0.22^a*
Captivity	Previtellogenic	10	35.75 ± 0.66	519.50 ± 56.58	6.59 ± 1.83^a	1.24 ± 0.31^a
	Vitellogenic	6	35.33 ± 2.32^**	593.33 ± 107.24	66.93 ± 10.40^b	11.52 ± 1.46^b
	Regression	6	36.85 ± 0.85	648.00 ± 44.00	78.00 ± 15.00^b	12.25 ± 3.15^b**

Values followed by different letters (a,b) are significantly different during the reproductive cycle. Values followed by different symbols (*) are significantly different between the environments (P < 0.05).