FiGUBE 3. — An image of ONC No. 2.}, suijerimposed over a portion of figure 1 (rectified). The plumes have been outlined, 



and the directions of the currents are shown by arrows. 



fishing grounds for brown slirimp (Pcnaeus 

 aztecus aztecus Ives) in the northern Gulf of 

 Mexico are known to be consistently in this region. 

 In November 1966 (wlien the Gemini photograph 

 was taken) about 57 percent of the catch of brown 

 shrimp along the Texas Coast came from statistical 

 area 19 and about 54 percent of the fishing effort 

 was exjjended in this area (table 1). In 1956-66 

 about 43 percent of the brown shrimp caught in 

 Gulf waters along the Texas Coast came from 

 statistical area 19 (table '2) . 



Additional evidence for the relation between the 

 plumes and brown shrimp fishing is provided by 

 data gatliered in July-September 19(>-t l)y per- 

 sonnel of the BCF Biological Laboratory, Galves- 

 ton, Tex. During this period, which is the height 



292 



T.\BLE 1. — Catch and fishing effort for brown shrimp, by 

 statistical areas, in the Gulf of Mexico along the l exas 

 Coast, November 1966 i 



Statistical area Catch Effort (trips) 



Metric 

 tons Percent Number Percent 



18 36.7 1.0 11:1 :l.5 



19 450.4 5B.<I 684 54.4 



20 99 4 12.6 166 13.2 



21 -.-- 205.5 25.9 288 22.9 



Total 792.0 100.0 1,257 100.0 



I Source: Gulf Coast slirimp data, reported by depth and area of capture, 

 species, size, number of trips, and days fislied, November 1966. U.S. Fisii 

 Wildl. Serv., Curr. Fish. Statist. 4358. 



of the brown slirimp season, an extensive interview 

 campaign was undertaken to determine, by 10- 

 minute grids, the areas most frequented by vessels 

 fishing for brown slirimp. These data have been 



U.S. FISH AND WILDLIFE SERVICE 



