Sturgeon
Sturgeon
Sturgeon (/ˈstɜːrdʒən/) is a group of 27 species of fish belonging to the family Acipenseridae. Their evolution dates back to the Triassic period some 245 to 208 million years ago.
Etymology
The term "sturgeon" is derived from the Old French word esturgeon, which is thought to have originated from the Latin sturio or sturgio, and the Old Norse styrja.
Description
Sturgeons are long-lived, late-maturing fishes with distinctive characteristics, such as a heterocercal caudal fin similar to those of sharks, and an elongated spindle-like body that is smooth-skinned, scaleless, and armored with 5 lateral rows of bony plates called scutes.
Species
There are 27 species of sturgeon, including the Beluga sturgeon, Atlantic sturgeon, and Shortnose sturgeon. Each species has unique characteristics and habitats.
Habitat
Sturgeons are found throughout temperate waters in the Northern Hemisphere. They are anadromous bottom-feeders, which means they migrate upstream to spawn but spend most of their lives feeding in river deltas and estuaries.
Medical Relevance
Sturgeon roe, also known as caviar, is a luxury food item that is often associated with health benefits due to its high levels of vitamins and minerals. However, overconsumption can lead to health issues due to its high sodium content.
Conservation Status
Many species of sturgeon are critically endangered, making them more threatened than any other group of species on the planet. Overfishing, pollution, and habitat destruction are the main threats to sturgeon populations.
External links
- Medical encyclopedia article on Sturgeon
- Wikipedia's article - Sturgeon
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