|
|
A newer version of these data is available at https://doi.org/10.5066/P94BH3W0. Grass Carp Ctenopharyngodon idella was imported to the United States in the 1960s for research into its usefulness as a biocontrol agent for nuisance aquatic vegetation. Escapees and intentionally stocked individuals founded wild, spawning populations in the Mississippi River and tributaries to the Laurentian Great Lakes. USGS-led research on the Sandusky River, a tributary to Lake Erie, demonstrated spawning of Grass Carp in 2015. In 2017, sampling with ichthyoplankton nets in the Sandusky River produced thousands of fertilized eggs on four dates during two distinct spawning events. We used published keys to estimate developmental...
|
Egg mat retention trials were conducted with walleye (Stizostedion vitreum) and lake whitefish (Coregonus clupeaformis) eggs in an experimental flume tank, seeded directly on egg mats (test retention efficiency) and hand dispersed in flowing flume water to simulate spawning over egg mats (test capture efficiency) with and without alternate substrate. In the field study, we measured number of eggs collected on mats and with bottom drift nets in the Detroit River to compare capture effectiveness. The field collection data describe the number, date of collection, and exact collection location of target species (walleye and lake whitefish). The flume trial data include number of eggs retained or collected, water velocity,...
Categories: Data;
Tags: Aquatic Biology,
Coregonus clupeaformis,
Detroit River,
Ecology,
Maumee River, All tags...
Saginaw Bay,
Sander vitreus,
Stizostedion vitreum,
USGS Science Data Catalog (SDC),
biological sampling,
biota,
eggs,
environment,
field inventory and monitoring,
fish eggs,
fish eggs,
fishery management,
fishery resources,
fishes,
freshwater ecosystems,
gear efficiency,
inlandWaters,
lake whitefish,
river systems,
walleye, Fewer tags
|
|
