54 
Fishery Bulletin 95(1 ), 1997 
01994 
□ 1993 
0 1992 
□ 1991 
□ 1990 
□ 1989 
□ 1988 
□ 1987 
■ 1986 
J FMAMJ JASOND 
□ 1994 
□ 1993 
H 1992 
□ 1991 
□ 1990 
□ 1989 
□ 1988 
□ 1987 
11986 
Figure 5 
Cumulative monthly catches of Argyrosomus inodorus made by South African 
commercial linefishermen in each region, expressed as percentages of the re- 
spective annual catches, 1986-94. 
and Baltz, 1993; Connaughton and Taylor, 1995), a 
range of spawning temperatures is expected. 
Hydrophonic monitoring of drumming levels 
(Takemura et al., 1978; Saucier and Baltz, 1993; 
Connaughton and Taylor, 1995) would provide bet- 
ter information on the times, sites, and oceanographic 
conditions necessary for spawning of silver kob. 
Although the ovaries of A. inodorus were not ex- 
amined microscopically, substantial increases in the 
number of spent gonads towards the end of, and im- 
mediately after, the five-month spawning season (Fig. 
10), as opposed to throughout the season, suggest 
that they are multiple spawners. Unfortunately par- 
tially spawned fish could not be identified macro- 
