MORPHOLOGY AND GENERAL REPRODUCTIVE STAGES OF ...

32 Ovarian development at GSI 1.1 – 5.0; a) Progressing -
mature (from a sample of 1050g BW, 41cm SL and 2.02
GSI); b) Regressing - running (from a sample of 700g
BW, 36cm SL and 2.38 GSI).
33 Ovarian development at GSI ≥ 5.1. Spawning (from a
sample of 1300g BW, 45cm SL and 7.95 GSI).
34 Developmental stages of spermatogenic cells; a)
spermatogonia; b) spermatocytes; c) spermatids;
appearance is blotchy and in clutch form; spermatozoa;
mature spermatozoa have distinct basophilic spherical
heads
35 Testicular development of P. nasutus; a) Early
spermatogenic stage; (from a sample of 45cm SL, 930g
BW and 0.14 GSI); b) Spermatogenic stage; (from a
sample of 54cm SL, 1450g BW and 0.85 GSI); c)
Maturation stage; (from a sample of 41cm SL, 780g BW
and 3.35 GSI); d) Spent stage; (from a sample of 44cm
SL, 770g BW and 1.06 GSI).
36 Frequency of occurrences of ovarian development of the
females and males of P. nasutus caught from the
Pahang River near Maran from October 2004 to
September 2005. Number in parenthesis ( ) represents
the number of specimens caught
37 Frequency of occurrences of ovarian development of the
females and males of P. nasutus caught from the
Pahang River near Maran from October 2004 to
September 2005. Number in parenthesis ( ) represents
the number of specimens caught
89
90
91
93
95
96
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