حفش شوكي

(تم التحويل من Bastard sturgeon)

الحفش الشوكي
Shipzaur.jpg
التصنيف العلمي edit
أصنوفة غير معروفة (أصلحها): الحياة
مملكة: الحيوانية
Phylum: حبليات
جنس: الحفش
Species:
A. nudiventris
Binomial name
Acipenser nudiventris
Synonyms[2][3]
  • Acipenser schypus Güldenstädt 1772 ex Bonnaterre 1788
  • Acipenser turritus فيتزنگر وهيكل 1836
  • Acipenser glaber فيتزنگر 1836
  • Lioniscus glaber (فيتزنگر 1836)
  • Acipenser nudiventris derjavini بورزنكو 1950
  • Acipenser shipus Lovetzky 1834 non Güldenstädt 1772
  • Euacipenser nudiventris (لوڤتسكي1828)

الحفش الشوكي (bastard sturgeon، يُعرف أيضاً باسم الحفش ذو الأهداب fringebarbel sturgeon، حفش السفينة ship sturgeon، اسمه العلمي Acipenser nudiventris)،[4] is a species of fish in the family Acipenseridae.[5] عادة ما تتواجد هذه الأسماك found along the benthos of shallower waters near shorelines or estuaries.[4][6]

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التغذية

Acipenser nudiventris typically feed on other animals near the benthos including: insect larvae, mollusks, crustaceans, and other smaller fish.[4][7][8]


التكاثر

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.[4] 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]

وضع الحفاظ

Formerly abundant in the Black, Aral and Caspian seas, its range is now primarily limited to the Ural River (in Russia and Kazakhstan), with possible relict populations in the Rioni River in Georgia and the Safid Rud in Iran.[8] One of the most established populations is one in Lake Balkhash in Kazakhstan, well outside its natural range, where they were introduced in the 1960s for commercial purposes.[4] A decline in the abundance of Acipenser nudiventris has been reported due to overfishing and damming, which have led to limitations placed on fishing for bastard sturgeon in areas such as the Ural River.[8][9] In order to alleviate concerns with rapidly decreasing Acipenser nudiventris, an effort was made to raise these fish in captivity before releasing them back into rivers they once inhabited.[7]

Head

المصادر

Specific
  1. ^ Gesner, J., Freyhof, J. & Kottelat, M. 2010. Acipenser nudiventris. The IUCN Red List of Threatened Species 2010: e.T225A13038215. https://dx.doi.org/10.2305/IUCN.UK.2010-1.RLTS.T225A13038215.en. Downloaded on 27 February 2021.
  2. ^ Froese, R.; Pauly, D. (2017). "Acipenseridae". FishBase version (02/2017). Retrieved 18 May 2017.
  3. ^ "Acipenseridae" (PDF). Deeplyfish- fishes of the world. Retrieved 18 May 2017.
  4. ^ أ ب ت ث ج Vecseia, Paul; Artyukhinb, Evgenii; Peterson, Douglas (2002). "Threatened fishes of the world: Acipenser nudiventris Lovetsky, 1828 (Acipenseridae)" (PDF). Environmental Biology of Fishes. 65 (4): 455–456. doi:10.1023/A:1021124904613. S2CID 26573687.
  5. ^ Gesner, J; Freyhof, J; Kottelat, M (2010). "Ship Sturgeon Acipenser nudiventris". The IUCN Red List of Threatened Species. Retrieved 9 April 2021.{{cite web}}: CS1 maint: url-status (link)
  6. ^ أ ب Lovetzky (1828). "Fringebarbel sturgeon (Acipenser nudiventris)". Marine Species Identification Portal. Retrieved 9 April 2021.{{cite web}}: CS1 maint: url-status (link)
  7. ^ أ ب ت Sivkov, Ianaki; Stefanov, Tihomir; Trichkova, Teodora (2011). Red data book of the republic of Bulgaria. Vassil Golemansky, Dimitar Peev, Valko Biserkov, Bŭlgarska akademii︠a︡ na naukite. Sofia: Bulgarian Academy of Sciences. p. 48. ISBN 978-954-9746-21-1. OCLC 995229803.{{cite book}}: CS1 maint: date and year (link)
  8. ^ أ ب ت ث ج ح خ "Thorn Sturgeon (Acipenser nudiventris) Ecological Risk Screening Summary" (PDF). U.S. Fish and Wildlife Service. 29 August 2018. Retrieved 9 April 2021.{{cite web}}: CS1 maint: url-status (link)
  9. ^ Abdolhay, Hossein (2004). Marine Ranching. Rome: FAO Fisheries Technical Paper. p. 170. ISBN 92-5-104961-0.

قالب:Chondrostei قالب:Acipenseriformes


قالب:Acipenseriformes-stub

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