Filters: partyWithName: Mark P Gaikowski (X) > partyWithName: Jon J Amberg (X)
Folders: ROOT > ScienceBase Catalog ( Show direct descendants )
5 results (7ms)
LocationFilters
Date Range
Extensions Contacts
Categories Tag Types Tag Schemes
|
![]() Description of Work This spring (2014) we will measure Asian carp eDNA over time at a Missouri River site downstream of multiple spawning areas before and during spawning. We will measure the amount of Asian carp eDNA in water samples. The amount of eDNA will be related to the numbers of eggs and larvae counted in matched samples (water samples taken at the same time and place). The time since the eDNA was released by the carp will be estimated and these results will be related to the average age of AC eggs and larvae in matched samples. We will also test for substances which interfere with the eDNA measurement techniques and can lead to false negatives. We will also be validating markers developed by USGS and...
Categories: Project;
Tags: Asian Carp,
GLRI,
Great Lakes Restoration Initiative,
Great Lakes Restoration Initiative,
Invasive Species,
There is growing interest in the use of carbon dioxide (CO2) as a management tool for controlling invasive fishes. However, there is limited published data on susceptibility of many commonly encountered species to elevated CO2 concentrations. Our objective was to estimate the 24-h LC50 and LC95 of four fishes (Rainbow Trout Oncorhynchus mykiss, Common Carp Cyprinus Carpio, Channel Catfish Ictalurus punctatus, and Westslope Cutthroat Trout Oncorhynchus clarkii lewisi). In the laboratory, we exposed fingerlings to a range of levels of CO2 for 24-h in unpressurized, flow-through tanks. A Bayesian hierarchical model was developed to estimate the dose response relationship for each species of fish with associated uncertainty,...
Categories: Data;
Tags: Bozeman Fish Technology Center; Bozeman, MT,
Carbon Dioxide,
LC95,
USGS Science Data Catalog (SDC),
biota,
Description of Work The field portion of a method validation study was completed August 2015. The study was designed to test the accuracy of a LAMP method to detect eDNA of Asian carps during simulated fish transport. During the study, more than 10,000 minnows were held in each of three fish transport tanks. Ten 4-inch silver carp were placed in one tank, a single 4-inch silver carp in the second tank while the third tank had no silver carp and served as a negative control. The LAMP method used amplifies the DNA of both bighead carp and silver carp. Three replicate trials were completed on separate days with side-by-side analyses completed by three novice and two expert users. Expert users had extensive experience...
![]() Description of Work Studies assessing seasonal and spatial changes in digestive enzymes and gill raker morphology in bigheaded carps and native planktivorous fishes have been completed. Results indicate that bigheaded carps feed earlier in the year than native filter-feeding fishes and that certain digestive enzymes present in bigheaded carps are either not present in some native fishes or are much less active in the native species than in bigheaded carps. Results also indicate that the gill raker morphology of bigheaded carps is relatively constant with minimal seasonally or spatially relevant changes unlike that of the native gizzard shad (Dorosoma cepedianum) which had both seasonal and spatially correlated changes...
Categories: Project;
Tags: Asian Carp,
GLRI,
Great Lakes,
Great Lakes Restoration Initiative,
Great Lakes Restoration Initiative,
Spreadsheets include data that was used to evaluate the efficacy of dry ice administered under-ice as a tool for reducing the overwinter survival of invasive carps. There are 10 CSV associated with this study
Categories: Data;
Tags: Asian carp,
USGS Science Data Catalog (SDC),
United States,
Winterkill,
biota,
|