Bittersweet Eyes
- José H. Leal
- Sep 6, 2019
- 1 min read
The Comb Bittersweet, Tucetona pectinata (Gmelin, 1791), is found along the coast of Southwest Florida. Bittersweet clams have numerous, simple eyes that resemble the ommatidia, or the individual units, of insect eyes. They can be seen as tiny dark dots along the mantle edges of the Comb Bittersweet in the photo. Studies on the eyes of bittersweet bivalves (family Glycymeridae) suggest that they can be used to sense approaching predators by sudden changes in light intensity (the “shadow reflex”) and/or by detecting their movement. Read more about mollusks and their shells at the Museum's Shell Guide.
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It's amazing how the bittersweet clam's eyes work nearly like those of insects; nature never gets boring! One quite clever survival strategy is the shadow reflex. It reminds me how cleverly students seek CIPD Assignment Writing Help in the UK to negotiate problems at CIPD levels 3, 5, and 7. It makes sense that such services get top marks for student support.
That’s fascinating—I had no idea clams like the Comb Bittersweet had eyes, let alone ones that function similarly to insect ommatidia! Nature never ceases to surprise me. It’s incredible how even these seemingly simple creatures have evolved such specialized ways to sense danger. Definitely heading over to the Shell Guide now to learn more—thanks for sharing this! geometry dash lite