After the new year, I looked through my collection of stereomicroscopic images to see if any of them might be candidates for posting. My microscope is an Olympus-like clone with a 0.7-4.5 zoom lens paired with a 10x objective. As with most dissecting microscopes, it comes equipped with a clear glass stage insert for backlighting as well as an opaque two-sided black/white stage insert. Many subjects such as algae and branching bryozoa photograph best with white backgrounds for contrast and reflective back lighting, but other species such as colonial ascidians and anemones photograph well with a black background. Crustaceans also look good on a black background and there were two images in my collection that had an aesthetic appeal. For seawater specimens, the stage insert was placed at the bottom of the collection tray. For preserved material, formaldehyde-fixed samples were transferred through alcohols to water and then placed in a container with the black stage on the bottom. Micrographs were taken with a QImaging Micropublisher Digital Camera using QCapture Pro Software.
Anderson, G. Species profiles: Life histories and environmental requirements of coastal fishes and invertebrates (Gulf of Mexico) - Grass Shrimp. US Fish Wildl Serv Biol Rep 82: 19 pp, 1985.
Descriptions of P. pugio, P. vulgaris, and P. intermedius. Web Preview of the Guide.
"The daggerblade grass shrimp, Palaemonetes pugio, is a small transparent to shrimp with a well-developed rostrum bearing several dorsal as well as three distinct ventral teeth, a smooth carapace and abdomen, and two pairs of chelate (claw-bearing) walking legs, the second pair more robust than the first. It has well-developed eyes with globular pigmented corneas and some slight yellow pigmentation in the eyestalks".
WoRMS, World Register of Marine Species: Palaemonetes pugio Hothuis 1949
EOL, Encyclopedia of Life: Palaemonetes vulgaris
WoRMS, World Register of Marine Species: Palaemonetes vulgaris (Say, 1818)