SEAMAP Real-time Plots for the year 2004


Week 1

This is the first 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 2 by the Alabama Vessel A.E. VERRILL east of the Mississippi River and from June 2 through June 4 by Texas vessels sampling Texas' inshore and offshore waters. Catch data from the A.E. VERRILL 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 pink shrimp catch rate was 0.2 lb/hr of 30-count shrimp at 29°56.4' N. lat. and 88°11.5' W. long., in 17 fm. No brown or white shrimp were caught east of the River during this sampling period. The highest total catch rate excluding the three shrimp species east of the River was 74 lb/hr reported in 3 fm at 30°12.6' N. lat. and 88°18.8' W. long., with spot being the predominant species.

The catch data west of the River indicated that the highest brown shrimp catch rate was 2.6 lb/hr of 131-count shrimp at 29°36.6' N. lat. and 93°57.2' W. long., in 4 fm. The catch data west of the River indicated that the highest white shrimp catch rate was 9 lb/hr of 27-count shrimp at 29°36.4' N. lat. and 93°53.2' W. long., in 3 fm. No pink shrimp were caught west of the River during this sampling period. The highest total catch rate excluding the three shrimp species west of the River was 139 lb/hr reported in 6 fm at 29°34.5' N. lat. and 93°50.8' W. long., with Atlantic croaker being the predominant species.

The catch data from Texas indicated that the highest catch rate of brown shrimp was 13.2 lb/hr of 76-count shrimp in 8 fm at 29°11.2' N. lat. and 94°41.8' W. long. The highest catch rate for white shrimp was 10.1 lb/hr of 17-count shrimp in 8 fm at 29°11.2' N. lat. and 94°41.8' W. long. The catch data from Texas indicated that the highest catch rate of pink shrimp was 3.7 lb/hr of 93-count shrimp in 7 fm at 25°59.9' N. lat. and 97°07.6' W. long. The maximum total catch rate excluding the three shrimp species was 334 lb/hr in 5 fm at 28°22.5' N. lat. and 96°20.5' W. long., with Atlantic croaker being the predominant species.

Sampling coverage for the next weekly report will be by the NOAA Ship OREGON II and R/V TOMMY MUNRO.

Week 1 Results

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