erally traveling westward in July, Au- 

 gust, and early September. Some of the 

 younger spawners, which have not yet 

 discharged their eggs, are sometimes 

 taken with the return fish. The arrival 

 fish are not only more robust than the 

 return ones, but their flesh is fattier and 

 usually commands a higher price. 



In most areas, traps were fished 

 for only one run — either as arrival or 

 return traps. However, along the south- 



em Atlantic coasts of Portugal and 

 Spain, many traps were altered to fish 

 for each season, and in this way they 

 fished both runs. 



Smaller and less important traps 

 take bluefin tuna throughout much of 

 the year, but these fish are mainly im- 

 mature individuals or larger ones which 

 have completed their spawning cycle 

 and are more widely dispersed, pre- 

 sumably in search of food. 



Roule (1914a, 1914b) proposed 

 the terms "genetic" for maturing blue- 

 fin tuna, and "erratic" for those which 

 had spawned and whose behavior was 

 dominated by search for food. These 

 terms occur in many works on these 

 fisheries. A brief glossary of some of 

 the more important terms, in English, 

 French, Italian, Portuguese, and Span- 

 ish is listed in Table 2. 



