SEAMAP Real-time Plots for the year 2004

Week 2

This is the second preliminary data summary for the 2004 SEAMAP Summer Shrimp/Groundfish Survey in the northern Gulf of Mexico. This week's summary includes sampling on June 11 through June 14 by the R/V TOMMY MUNRO, sampling June 9 through June 10 by the NOAA Ship OREGON II, and sampling on June 14 by Texas vessels. Catch data from the R/V TOMMY MUNRO and 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 east of the River indicated that the highest brown shrimp catch rate was 28.2 lb/hr of 56-count shrimp at 29°05.7' N. lat. and 88°56.1' W. long., in 30 fm. The highest white shrimp catch rate was 0.5 lb/hr of 20 count shrimp at the same station. The highest pink shrimp catch rate was 2.8 lb/hr at 29°23.6' N. lat. and 88°48.1' W. long., in 15 fm. The highest total catch rate excluding the three shrimp species east of the River was 363 lb/hr reported in 40 fm at 29°11.8' N. lat. and 88°40.1' W. long., with gulf butterfish being the predominant species.

The catch data from Texas indicated that the highest catch rate of brown shrimp was 25.7 lb/hr of 69-count shrimp in 8 fm at 27°37.8' N. lat. and 97°05.1' W. long. The highest catch rate for white shrimp was 14.8 lb/hr of 15-count shrimp in 9 fm at 27°45.6' N. lat. and 97°00.6' W. long. The catch data from Texas indicated that the highest catch rate of pink shrimp was 2.9 lb/hr of 73-count shrimp in 8 fm at 27°43.2' N. lat. and 97°04.8' W. long. The maximum total catch rate excluding the three shrimp species was 322 lb/hr in 10 fm at 27°40.5' N. lat. and 96°56.6' W. long., with no predominant species.

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

Week 2 Results

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