I swear I am not going to turn this into a clam facts forum, but had to post this one!
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Clams play a vital role in filtering water, improving water quality, and providing habitat for other marine organisms.
Clams have a highly developed nervous system.
Although clams may not possess a brain, they have ganglia and sensory organs that allow them to respond to their environment. They can detect light, vibrations, and even chemicals in the water.
Yes, and they can acclimate to threats! I blogged about this a few years ago
I was responding mirthfully to your declamation that you were not going to turn this into a Clam Facts Forum. You never said the rest of us shouldn’t. Are you a Clam Biologist? Do you have some new Clam Facts for us?
Edit: Ooh, you are a Clam Biologist! Eee, how exciting and interesting!! Thanks for posting your blog!! And no, I’m not a poison dart frog biologist, but I think they are nifty. Tho’ I am curious about all biology, mostly I focus on H. sapiens and related species.
Bivalves appear in the fossil record first in the early Cambrian more than 500 million years ago.
In Oysters (Crassostrea virginica), serotonin increases, and dopamine decreases the activity their cilia to regulate water’s movement along their gills, and for capturing food particle.
The nervous system control of lateral ciliary activity of the gill of the bivalve mollusc, Crassostrea virginica https://www.sciencedirect.com/science/article/abs/pii/S1095643307010537
The smallest legally harvestable clams are called countnecks or peanuts, next size up are littlenecks, then topnecks. Above that are the cherrystones, and the largest are called quahogs or chowder clams.
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Bivalves typically display bilateral symmetry both in shell and anatomy, but there are significant departures from this theme in taxa such as scallops and oysters.
Tridacna gigas, the giant clam, has several hundred to several thousand pinhole eyespots about 0.5mm in diameter.
Yes, and they each have retinas made of guanine crystals! And gigas is distinctive for surrounding its eyespots with little rings of reflective cells called iridophores!
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Did you know:
Clams are considered Halal in Islam, but treif (non-kosher) in Judaism.
edit: I’m done now.
I did not know that! Very interesting
