The Sakhalin sturgeon (''Acipenser mikadoi'') is a species of fish in the family
Acipenseridae
Sturgeon is the common name for the 27 species of fish belonging to the family Acipenseridae. The earliest sturgeon fossils date to the Late Cretaceous, and are descended from other, earlier acipenseriform fish, which date back to the Early ...
. It is found in
Japan
Japan ( ja, 日本, or , and formally , ''Nihonkoku'') is an island country in East Asia. It is situated in the northwest Pacific Ocean, and is bordered on the west by the Sea of Japan, while extending from the Sea of Okhotsk in the n ...
and
Russia
Russia (, , ), or the Russian Federation, is a transcontinental country spanning Eastern Europe and Northern Asia. It is the largest country in the world, with its internationally recognised territory covering , and encompassing one-ei ...
.
Environment
The Sakhalin sturgeon is known to be found in either a marine or freshwater environment within demersal depth range. This species is found in brackish waters. They are also native to a tropical climate.
Size
The Sakhalin sturgeon has reached the maximum recorded length of about 150 centimeters or about 59 inches as a tall fish.
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Biology
The Sakhalin sturgeon is considered to be a species that migrates up the river from the sea in order to spawn. During the months of April to May, the Sakhalin sturgeon feeds in the freshwater and then returns to the ocean during the summer.
Identification
The Sakhalin sturgeon is recorded to be the colors of olive-green and dark green. Its sides have a yellowish white color and it includes an olive green stripe. The bottom lip of this species is split into two.
Distribution
The Sakhalin sturgeon is commonly found in the areas of Northwest Pacific, Bering Sea, Tumnin or Datta river, northern Japan, and Korea.[ This species currently spawns persistently in the Tumnin River.]
Threats
The threats that are affecting the population of the Sakhalin sturgeon include illegal poaching, trawling, accidental bycatch, pollution, and construction of dams.
Common names
The common names of the Sakhalin sturgeon in various languages include the following:
*Acipenser mikadoi : Italian (Italiano)
*Mikado Chôzame (帝蝶鮫) : Japanese (日本語)
Taxonomy
According to recent genetic data,mitogenome
Mitochondrial DNA (mtDNA or mDNA) is the DNA located in mitochondria, cellular organelles within eukaryotic cells that convert chemical energy from food into a form that cells can use, such as adenosine triphosphate (ATP). Mitochondrial DNA ...
s of the Sakhalin sturgeon (''Acipenser mikadoi'') and the Green sturgeon
The green sturgeon (''Acipenser medirostris'') is a species of sturgeon native to the northern Pacific Ocean, from China and Russia to Canada and the United States.
Description
Sturgeons are among the largest and most ancient of ray finn ...
(''Acipenser medirostris'') to correspond to the variability at the intraspecific
Biological specificity is the tendency of a characteristic such as a behavior or a biochemical variation to occur in a particular species.
Biochemist Linus Pauling stated that "Biological specificity is the set of characteristics of living organis ...
level. The time since the divergence of the Sakhalin sturgeon and the Green sturgeon
The green sturgeon (''Acipenser medirostris'') is a species of sturgeon native to the northern Pacific Ocean, from China and Russia to Canada and the United States.
Description
Sturgeons are among the largest and most ancient of ray finn ...
may be approximately 160,000 years.
References
Sources
{{Taxonbar, from=Q1842196
Acipenser
Fish of East Asia
Fish of Japan
Fish of Russia
sturgeon
Sturgeon is the common name for the 27 species of fish belonging to the family Acipenseridae. The earliest sturgeon fossils date to the Late Cretaceous, and are descended from other, earlier acipenseriform fish, which date back to the Early ...
Critically endangered fish
Critically endangered biota of Asia
Taxonomy articles created by Polbot
Taxa named by Franz Martin Hilgendorf
Fish described in 1892