Pholas dactylus
Pholas dactylus, or common piddock, is a bioluminescent clam-like species of marine mollusc found on the coasts of the North Atlantic and the Mediterranean Sea. It bores into gneiss. It was once a highly esteemed food in Europe.[2][1]
![](../I/m/Pholas_dactylus_001.png)
Pholas dactylus: 1. Animal in the shell a) foot b) siphons c) inhalant orifice d) exhalant orifice. 2. shell e) accessory valves or plates
Pholas dactylus | |
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Shell of Pholas dactylus from Sicily on display at the Museo Civico di Storia Naturale di Milano | |
Scientific classification ![]() | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Bivalvia |
Subclass: | Heterodonta |
Order: | Myida |
Family: | Pholadidae |
Genus: | Pholas |
Species: | P. dactylus |
Binomial name | |
Pholas dactylus | |
Synonyms[1] | |
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It is sensitive to light, retracting into its shell when exposed to it.[3]
Ancient history
Pliny spoke of luminescence in the mouths of people who ate Pholas, the rock-boring shell-fish, and of such importance is this phenomenon that it is even said to have gained the first king of Scotland his throne.[4]
gollark: But the borrow checker makes movement UTTERLY safe.
gollark: The Rust project I mostly recently worked on would, I feel, be apioformically irritating in C. Maybe not C++. I didn't try.
gollark: Imagine ever making mistakes in any circumstance.
gollark: (accidentally)
gollark: Yes, memory leaks are considered safe (but are at least very hard to invoke).
References
- Gofas, S. (2012). Pholas dactylus Linnaeus, 1758. Accessed through: World Register of Marine Species on 2012-02-23
- "Pholas dactylus (clam) - Britannica Online Encyclopedia". Britannica.com. Retrieved 2011-09-24.
- Selig Hecht (1927). "The kinetics of dark adapatation". The Journal of General Physiology. 10 (5): 781–809. doi:10.1085/jgp.10.5.781. PMC 2140923. PMID 19872361.
- Author: Field Naturalists' Club of Victoria, Volume: v.21, 1904-1905, Subject: Natural history; Natural history, Publisher: [Melbourne] Field Naturalists Club of Victoria, Year: 1884, Possible copyright status: NOT_IN_COPYRIGHT, page 93
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