Plankton sampling in Gerlache Inlet in the 06-07 season collected large numbers of larvae of the Antarctic ice fish Pleuragramma antarcticum. Samples of Pleuragramma eggs and recently hatched larvae were collected the following season by drilling 25 cm holes through the sea ice in a grid centered around 74° 38.762'S, 164° 11.917' E. Eggs were removed from the ice overflowing from the holes and/or scooped from the slush filling the hole with a dip-net. Hatched pelagic stage larvae were collected using 100m vertical hauls on a 3x3 spatial grid with samples taken approximately 100m apart. Samples of both eggs and larvae were sorted and fixed in molecular grade ethanol for later microsatellite analysis.
Not all passes that include the area of interest are useful. Pass quality is rated as Poor, Good, and Best. The worst passes are weeded out entirely. To be included a pass must cover at least 50% of the area of interest and have a central resolution no worse than 2.8 km. Such passes are rated Poor. Good passes must have a minimum coverage of at least 70% and no worse than 2 km central resolution. The Best passes must cover at least 80% and have a central resolution of 1.5 km or better. Two image sizes are included. The image size and quality is indicated by the button size and colo.