SEAMAP Real-time Plots for the year 2009

Week 4

Below is the fourth preliminary data summary for the 2009 SEAMAP Summer Shrimp/Groundfish Survey in the northern Gulf of Mexico. This week's summary includes sampling from June 22 through June 29 by the NMFS vessel Oregon II, and by the Texas vessels. Catch data from the Oregon II were taken with a 40-ft trawl. Catch data from the Texas vessels were taken with 20-ft trawls.

Plotted catch rates have been converted to pounds per hour for a 40-ft trawl (20-ft trawl x 2). Shrimp counts are heads-on. The squares on the charts are 10-minute grids. The number in each grid square is the average catch or count from all stations (may be one or more stations) that were sampled within a particular grid. The sampling stations were located randomly by depth zone.

The catch data from Texas indicated that the highest catch rate of brown shrimp was 232.7 lb/hr in 20 fm at 28° 31' N. lat. and 94° 27' W. long. The highest catch rate of white shrimp was 49.5 lb/hr in 7 fm at 29° 14' N. lat. and 94° 42' W. long. The highest catch rate of pink shrimp was 0.3 lb/hr in 10 fm at 28° 59' N. lat. and 94° 47' W. long. The maximum total catch rate excluding the three shrimp species was 3,295 lb/hr in 12 fm at 28° 51' N. lat. and 94° 38' W. long.

Week 4 Results

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