SEAMAP Real-time Plots for the year 2008


Week 6

Below is the sixth preliminary data summary for the 2008 SEAMAP Summer Shrimp/Groundfish Survey in the Gulf of Mexico. This week's summary includes sampling from July 8 through July 13 by the NMFS vessel Oregon II. Catch data from the Oregon II were taken with a 40-ft trawl.

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 west of the Mississippi River indicated that the highest catch rate of brown shrimp was 29.8 lb/hr in 30 fm at 28° 26' N. lat. and 94° 38' W. long. The highest catch rate for white shrimp was 7.8 lb/hr in 17 fm at 28° 39' N. lat. and 91° 33' W. long. The highest catch rate of pink shrimp was 0.4 lb/hr in 17 fm at 28° 39' N. lat. and 91° 33' W. long. The maximum total catch rate excluding the three shrimp species was 1567 lb/hr in 16 fm at 28° 50' N. lat. and 92° 41' W. long. Low bottom dissolved oxygen again seemed to affect some of the catches during this survey period.

Week 6 Results

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