SEAMAP Real-time Plots for the year 2004

Week 3

Enclosed is the third preliminary data summary for the 2004 SEAMAP Summer Shrimp/Groundfish Survey in the northern Gulf of Mexico. This week's summary includes sampling June 16 through June 22 by the NOAA Ship OREGON II and sampling on June 16 and June 21 by 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-off. Catch rates for finfish are given in the charts divided by 10; e.g., a charted catch rate of 19 means 190 lb/hr. The squares on the charts are 10-minute grids and contain an average catch or count from one or more sampling stations 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 149.8 lb/hr of 58-count shrimp in 20 fm at 26°14.9' N. lat. and 96°55.0' W. long. The highest catch rate for white shrimp was 7.8 lb/hr of 15-count shrimp in 8 fm at 26°03.4' N. lat. and 97°07.4' W. long. The catch data from Texas indicated that the highest catch rate of pink shrimp was 32.6 lb/hr of 34-count shrimp in 9 fm at 26°47.4' N. lat. and 97°17.8' W. long. The maximum total catch rate excluding the three shrimp species was 362 lb/hr in 12 fm at 26°40.1' N. lat. and 97°10.3' W. long., with spot being the predominant species.

Sampling coverage for the next weekly report will be by the NOAA Ship OREGON II.

Week 3 Results

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