Bastard sturgeon
Ship sturgeon | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Acipenseriformes |
Family: | Acipenseridae |
Genus: | Acipenser |
Species: | A. nudiventris
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Binomial name | |
Acipenser nudiventris Lovetsky 1828
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Synonyms[3][4] | |
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The bastard sturgeon, also known as the fringebarbel sturgeon, ship sturgeon, spiny sturgeon, or thorn sturgeon (Acipenser nudiventris),
Feeding
Acipenser nudiventris typically feed on other animals near the benthos including: insect larvae, mollusks, crustaceans, and other smaller fish.[5][7][8]
Reproduction
Acipenser nudiventris are usually anadromous—meaning they live in saltwater and travel to freshwaters to deposit eggs—but some can spend their entire life cycle in freshwater.[8] Because they travel from saltwater to freshwater to spawn, they often live nearby estuaries.[8] Migration to freshwaters for deposition of eggs occurs during spring between the months of March and May, and fall between October and November.[8][6] On average, female bastard sturgeon produce between 200,000 and 300,000 eggs over the course of their lifetime.[7] The young Acipenser nudiventris can live in freshwater for years following birth prior to traveling to the sea, though many migrate to the sea soon after birth.[5] The average time between birth of subsequent Acipenser nudiventris is around 15 years; variation in generation time of this species is somewhat dependent on human fishing patterns and whether the species is thriving in its environment.[8]
Conservation status
Formerly abundant in the
References
- ^ . Retrieved 17 November 2021.
- ^ "Appendices | CITES". cites.org. Retrieved 14 January 2022.
- ^ Froese, R.; Pauly, D. (2017). "Acipenseridae". FishBase version (02/2017). Retrieved 18 May 2017.
- ^ "Acipenseridae" (PDF). Deeplyfish- fishes of the world. Retrieved 18 May 2017.
- ^ S2CID 26573687.
- ^ a b Lovetzky (1828). "Fringebarbel sturgeon (Acipenser nudiventris)". Marine Species Identification Portal. Archived from the original on 10 April 2021. Retrieved 9 April 2021.
- ^ OCLC 995229803.
- ^ a b c d e f g "Thorn Sturgeon (Acipenser nudiventris) Ecological Risk Screening Summary" (PDF). U.S. Fish and Wildlife Service. 29 August 2018. Archived (PDF) from the original on 10 April 2021. Retrieved 9 April 2021.
- ISBN 92-5-104961-0.