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Acipenser mikadoi in Japan
Sakhalin sturgeon

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Acipenser mikadoi   Hilgendorf, 1892
Family:	Acipenseridae (Sturgeons) , subfamily: Acipenserinae			picture () by ( not available )
Order:	Acipenseriformes  (sturgeons and paddlefishes)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:	Sakhalin sturgeon
Max. size:	150 cm TL (male/unsexed; Ref. 12218)
Environment:	demersal; anadromous
Climate:	temperate; 56°N - 33°N
Global Importance:	fisheries: minor commercial; aquaculture: commercial
Resilience:	Very low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.)
Distribution:	Northwest Pacific: Bering Sea, Tumnin (Datta) river, to northern Japan and Korea. This species was formerly regarded to be a population of Acipenser medirostris (Ref. 6866). International trade restricted (CITES II, since 1.4.98; CMS Appendix II).
Diagnosis:	Dorsal spines (total): 0-0; Dorsal soft rays (total): 33-40; Anal spines: 0-0; Anal soft rays: 22-30. Body shields in 5 rows; dorsal shields 7 to 11, lateral 22 to 36 and ventral 10.
Biology:	Commercially cultured in Japan (Ref. 6866). From April to May adults feed in fresh water and return to the ocean during the fall (Ref. 12218)
Threatened:	Endangered, see IUCN Red List  (C1) , (Ref. 36508)
Dangerous:	harmless
Coordinator:
Main Ref:	Birstein, V.J.. 1993. (Ref. 6866)
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Japan country information
Common names:	Chôzame		Ref:  Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984
Status:	native		Ref:
Salinity:	freshwater, brackish, marine
Abundance:	scarce (very unlikely)		Ref:  Sokolovskaya, T.G., A.S. Sokolovskii and E.I. Sobolevskii, 1998
Uses:	no uses
Comments:	Ranges from the Tôhoku District northward (Ref. 559); including Hokkaido (Ref. 28216, 37812). A. mustiscutatus is distributed off the Fukushima and Niigata Prefectures (Ref. 4537). Also Ref. 2850, 6866, 1998,12218.
Country Information:	www.cia.gov/cia/publications/factbook/geos/ja.html
National  Fisheries  Authority:	www.maff.go.jp/eindex.html
Occurrences:	Occurrences    Point map
Main Ref:	Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984
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	Note: No data are available if label is black .
Tools:	Biogeographic modelling | E-book | Field guide | Length-frequency Wizard | Life-history tool |
Internet sources:	BiOSC Point Data | CISTI | Google | GOBASE | FIGIS | GenBank ( genome, nucleotide ) | PubMed | Scirus | Tree of Life | Zoological Record Other web sites |
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	Checked:  Garilao, Cristina V.	Modified:  Capuli, Estelita Emily	Entered:  Cruz, Tess

	Ref.:				Glossary
		(e.g. 9948)				(e.g. cephalopods)
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Page created by: Eli, 20.10.03, last modified by Eli, 26.06.07