Wexler et al : Temporal variation in larval growth of Thunnus albocares in the Panama Bight 



E 

 a 



T3 



Standard length (mm) 



Figure 6 



Linear relationships between otolith diameter and standard length for larval 

 yellowfin tuna (Thunnus albacares) collected during June 1990, September 1991. 

 and August 1997. 



Plankton volume 

 I...... I SST for local area 



li^^Siy^ SST for estimated area 

  Wind stress 



E i- 



E a 



~ to 



OJ »- 



p » 



June 1990 June -July 1991 August -Sept, 1991 June • July 1992 July -August 1997 



Collection group period 



Figure 7 



Standardized mean plankton volumes and monthly mean wind stress and sea 

 surface temperature data for the local sampling area (Fig. 1) and the estimated 

 area iFig. 2) potentially occupied by each larval yellowfin tuna (Thunnus albacares) 

 cohort during its life history. The standard errors of the means are indicated for 

 plankton and wind stress, and the ranges for the mean water temperatures are 

 also indicated. Plankton data were collected from ichthyoplankton tows in the 

 vicinity of the Frailes Islands (see Fig. 1) and area- and time-specific physical 

 data were extracted from the internet iIRPl. 



