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The flesh of the sturgeon is widely considered a delicacy, especially smoked sturgeon. Poaching of the shovelnose sturgeon is becoming a problem, as they must be 8–10 years old before spawning can occur, and females do not become gravid every year. There has some interest in marketing the shovelnose sturgeon as an aquarium species. [7]
Prior to the construction of dams on the Missouri, pallid sturgeon migrated hundreds of miles upstream to spawn, and sought out rocky or hard surfaces to deposit hundreds of thousands of eggs. [ 27 ] [ 26 ] One female pallid sturgeon caught in the upper Missouri River was estimated to be carrying 170,000 eggs, representing over 11 percent of ...
The largest sturgeon on record was a beluga female captured in the Volga Delta in 1827, measuring 7.2 m (23 ft 7 in) long and weighing 1,571 kg (3,463 lb). Most sturgeons are anadromous bottom-feeders, migrating upstream to spawn but spending most of their lives feeding in river deltas and estuaries.
Lake sturgeon congregate in the shallows of the Wolf River on April 14 near Shiocton. The fish are gathering in the area to spawn.
When ready to spawn, white sturgeon choose a variety of substrates dependent on the river system, spawning on gravel or rocky substrate in moderate to fast currents, with observed depths of 3–23 m (9.8–75.5 ft), and water velocities at the bottom on a range of 0.6-2.4 m/sec. [21] When eggs are released by the female, they are negatively ...
Sturgeon are an anadromous species that live solitarily or in small groups. They migrate upriver in the spring to spawn. Sturgeons tend to inhabit the shallow waters of coastal shelves, coastal and estuarine areas on soft bottom in the sea, and can live down to a depth of 160 ft (49 m).
Shortnose sturgeon spawn in moving freshwater water, over rubble or gravel bottoms. Time of spawning varies by latitude and is likely based on water temperatures in the range from 6.5–15 °C (43.7–59.0 °F); this may be as early as January in South Carolina or as late as May in Canada.
Scott and Crossman 1973 reported potential spawning in the Fraser River in Canada, but Moyle 2002 reported that there was no evidence of green sturgeon spawning in Canada or Alaska. Green and white sturgeon enter the Feather River system annually and spawning of green sturgeon was documented for the first time in 2011. [43]