Substrate and pond configurations are shown before being used in a study on sturgeon reproduction at CERC.
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Substrate Arrangement Of A CERC Pond
Substrate and pond configurations are shown before being used in a study on sturgeon reproduction at CERC.
Free Embryo
Free embryo sample from Missouri River.
Free embryo sample from Missouri River.
Milt Collection
Milt being collected from a male Pallid Sturgeon.
Milt being collected from a male Pallid Sturgeon.
Eggs and Milt Being Mixed
Collected eggs and extracted milt mixed with water and stirred with a feather to stimulate fertilization.
Collected eggs and extracted milt mixed with water and stirred with a feather to stimulate fertilization.
Experimental Stream Section
Researchers at the Columbia Environmental Research Center will use experimental streams with sand, gravel or cobble bottoms to help to determine the influence of the different substrates on hatch and initiation of dispersal of pallid sturgeon free-embryos.
Researchers at the Columbia Environmental Research Center will use experimental streams with sand, gravel or cobble bottoms to help to determine the influence of the different substrates on hatch and initiation of dispersal of pallid sturgeon free-embryos.
Free Embryo Sampling in the Platte and Missouri Rivers
Weekly sturgeon free embryo efforts were initiated on April 15, 2014 near the confluence of the Platte and Missouri Rivers. Pictured is biologist Jeff Beasley preparing to deploy a sampling net into the Missouri River.
Weekly sturgeon free embryo efforts were initiated on April 15, 2014 near the confluence of the Platte and Missouri Rivers. Pictured is biologist Jeff Beasley preparing to deploy a sampling net into the Missouri River.
Pallid Sturgeon in Dip Net
Biologists work together to conduct reproductive assessments on pallid sturgeon held in study ponds.
Biologists work together to conduct reproductive assessments on pallid sturgeon held in study ponds.
Pallid Sturgeon Holding Tanks
Biologists work together to conduct reproductive assessments on pallid sturgeon held in study ponds.
Biologists work together to conduct reproductive assessments on pallid sturgeon held in study ponds.
Hartsburg, MO
Missouri River ice flows past a boat ramp located near Hartsburg, MO.
Missouri River ice flows past a boat ramp located near Hartsburg, MO.
Hermann, MO
Hermann, MO boat ramp--December 2013.
Hermann, MO boat ramp--December 2013.
Larval Mussels
Recent advancements in assessments using early life stages of test organisms (like the larval mussels shown) provide robust alternatives to full life-cycle chronic ecotoxicity tests. For more information on aquatic toxicology test organisms refer to the U.S.
Recent advancements in assessments using early life stages of test organisms (like the larval mussels shown) provide robust alternatives to full life-cycle chronic ecotoxicity tests. For more information on aquatic toxicology test organisms refer to the U.S.
Male Reproductive Pallid Sturgeon
Biologist Sabrina Davenport with a reproductive male pallid sturgeon.
Biologist Sabrina Davenport with a reproductive male pallid sturgeon.
Cranberry Chute
The Cranberry Bend Chute on the Missouri River.
The Cranberry Bend Chute on the Missouri River.
Female Pallid Sturgeon
CSRP Biologist Sabrina Davenport holding reproductive feamle pallid sturgeon, PLS11-020.
CSRP Biologist Sabrina Davenport holding reproductive feamle pallid sturgeon, PLS11-020.
Ring-billed Gulls
Ring-billed gulls line a sand bar along the Missouri River to watch USGS boats fish for sturgeon.
Ring-billed gulls line a sand bar along the Missouri River to watch USGS boats fish for sturgeon.
Wild Turkey
A wild turkey perches on a rock dike in the Missouri River to get a closer look at USGS boats fishing for sturgeon.
A wild turkey perches on a rock dike in the Missouri River to get a closer look at USGS boats fishing for sturgeon.
Mississippi River near Cape Girardeau, MO
CRSP biologists travelled along the Missouri and Mississippi rivers in search of usable boat ramps. Pictured is a ramp located near Cape Girardeau, MO.
CRSP biologists travelled along the Missouri and Mississippi rivers in search of usable boat ramps. Pictured is a ramp located near Cape Girardeau, MO.
Mississippi River boat ramp near Grand Tower, IL
CRSP biologists travelled along the Missouri and Mississippi rivers in search of usable boat ramps. Pictured is a ramp Grand Tower, IL.
CRSP biologists travelled along the Missouri and Mississippi rivers in search of usable boat ramps. Pictured is a ramp Grand Tower, IL.
Sturgeon Embryo
A free-drifting sturgeon embryo was captured in the Lower Missouri River in late August. Most sturgeon in the lower Missouri River spawn in the springtime.
A free-drifting sturgeon embryo was captured in the Lower Missouri River in late August. Most sturgeon in the lower Missouri River spawn in the springtime.
Scientists release a tagged pallid sturgeon
Scientists release a tagged pallid sturgeon from a tracking boat on the Yellowstone River in Montana.
Scientists release a tagged pallid sturgeon from a tracking boat on the Yellowstone River in Montana.
Preparing Research Boats to Track Tagged Pallid Sturgeon
Biologist, Dave Combs prepares a tracking boat (foreground) and a DIDSON survey boat (background) to search the Yellowstone River for tagged pallid sturgeon, Near Fairview, Montana. Pallid sturgeon in Montana are tagged with radio telemetry transmitters that are detected with large antennas mounted the boats.
Biologist, Dave Combs prepares a tracking boat (foreground) and a DIDSON survey boat (background) to search the Yellowstone River for tagged pallid sturgeon, Near Fairview, Montana. Pallid sturgeon in Montana are tagged with radio telemetry transmitters that are detected with large antennas mounted the boats.