SEPT. 



iy^ 



i^' 



A 



;1^ '■" 



«i~- 



m 



Figure 35. — Landings of Auxis rochet off Japan, 

 by month, in 1952 (Hotta 1955). 





2.2 *i 



Figure 36. — Long distance movement of Aiixis 

 rochei tagged in August. September, and 

 November (Yamashige 1974). 



catches showed a slight predominance of females during 

 periods of southwest monsoons; the male to female ratio 

 reached 1:1.5 during this period. 



For A. rochei caught in Spanish waters, Rodriguez- 

 Roda (1966) also tested the ratios of males to females in 



the catches at Barbate, Tarifa, and La Linea, particu- 

 larly for those months where a ratio of 1:1 was in doubt. 

 The results showed no significant departures from a 1:1 

 ratio except at La Linea where in September 1961, sig- 

 nificantly more males were taken in the traps. 



42 



