Publications
Find out more about Biological Threat and Invasive Species Research through our publications.
Filter Total Items: 308
Aspects of embryonic and larval development in bighead carp Hypophthalmichthys nobilis and silver carp Hypophthalmichthys molitrix
As bighead carp Hypophthalmichthys nobilis and silver carp H. molitrix (the bigheaded carps) are poised to enter the Laurentian Great Lakes and potentially damage the region’s economically important fishery, information on developmental rates and behaviors of carps is critical to assessing their ability to establish sustainable populations within the Great Lakes basin. In laboratory experiments, t
Authors
Amy E. George, Duane Chapman
Detection of environmental DNA of Bigheaded Carps in samples collected from selected locations in the St. Croix River and in the Mississippi River
The use of molecular methods, such as the detection of environmental deoxyribonucleic acid (eDNA), have become an increasingly popular tool in surveillance programs that monitor for the presence of invasive species in aquatic systems. One early application of these methods in aquatic systems was surveillance for DNA of Asian carps (specifically bighead carp Hypophthalmichthys nobilis and silver ca
Authors
Jon J. Amberg, S. Grace McCalla, Loren Miller, Peter Sorensen, Mark P. Gaikowski
Binational ecological risk assessment of bigheaded carps (Hypophthalmichthys spp.) for the Great Lakes Basin.
Bigheaded carps (Bighead and Silver carps) are considered a potential threat to the Great Lakes basin. A binational ecological risk assessment was conducted to provide scientifically defensible advice for managers and decision-makers in Canada and the United States. This risk assessment looked at the likelihood of arrival, survival, establishment, and spread of bigheaded carps to obtain an overall
Authors
Becky Cudmore, Nicholas E. Mandrak, John M. Dettmers, Duane Chapman, Cynthia S. Kolar
Assessing consumption of bioactive micro-particles by filter-feeding Asian carp
Silver carp Hypophthalmichthys molitrix (SVC) and bighead carp H. nobilis (BHC) have impacted waters in the US since their escape. Current chemical controls for aquatic nuisance species are non-selective. Development of a bioactive micro-particle that exploits filter-feeding habits of SVC or BHC could result in a new control tool. It is not fully understood if SVC or BHC will consume bioactive mic
Authors
Nathan R. Jensen, Jon J. Amberg, James A. Luoma, Liza R. Walleser, Mark P. Gaikowski
Fright reaction and avoidance induced by exposure to conspecific skin extracts in invasive bighead and silver carps
No abstract available.
Authors
Edward E. Little, Robin Calfee, David L. Fabacher, Laura Sanders
Developmental rate and behavior of early life stages of bighead carp and silver carp
The early life stages of Asian carp are well described by Yi and others (1988), but since these descriptions are represented by line drawings based only on live individuals and lacked temperature controls, further information on developmental time and stages is of use to expand understanding of early life stages of these species. Bighead carp and silver carp were cultured under two different tempe
Authors
Duane Chapman, Amy E. George
Keeping Hawai’i’s forest birds one step ahead of avian diseases in a warming world: a focus on Hakalau Forest National Wildlife Refuge. A case study from the National Conservation and Training Center Structured Decision Making Workshop
This report is a product of a one-week workshop on using Structured Decision Making to identify and prioritize conservation actions to address the threat of climate change on Hawaii‟s native forest bird community. Specifically, t his report addresses the issue of global warming ‟s likely role in increasing disease prevalence in upper elevation forests of Hawaii, negatively impacting native bird po
Authors
Eben H. Paxton, Jeff Burgett, Eve McDonald-Fadden, Ellen Bean, Carter T. Atkinson, Donna Ball, Colleen Cole, Lisa H. Crampton, Jim Kraus, Dennis A. LaPointe, Loyal Mehrhoff, Michael D. Samuel, Donna Brewer, Sarah J. Converse, Steve Morey
Genetic diversity and variation of mitochondrial DNA in native and introduced bighead carp
The bighead carp Hypophthalmichthys nobilis is native to China but has been introduced to over 70 countries and is established in many large river systems. Genetic diversity and variation in introduced bighead carp have not previously been evaluated, and a systematic comparison among fish from different river systems was unavailable. In this study, 190 bighead carp specimens were sampled from five
Authors
Si-Fa Li, Qin-Ling Yang, Jia-Wei Xu, Cheng-Hui Wang, Duane Chapman, Guoping Lu
Facts About Invasive Bighead and Silver Carps
The U.S. Geological Survey (USGS) scientists at the Columbia Environmental Research Center (CERC), Columbia, Missouri, carry out basic and applied research on the ecology of invasive fishes in the Missouri and Mississippi river basins. Emphasis is placed on improving understanding of the life cycles of bighead and silver carp to provide information needed to manage these aggressively invasive spec
Authors
Duane Chapman
Effects of water hardness on size and hatching success of silver carp eggs
Eggs of silver carp Hypophthalmichthys molitrix absorb water after release from the female, causing them to become turgid and to increase substantially in size. The volume of water that diffuses within an egg is most likely determined by (1) the difference in ionic concentration between the egg and the water that surrounds it and (2) the elasticity of the egg membrane. Prior observations suggest t
Authors
Jeff J. Rach, Greg G. Sass, James A. Luoma, Mark P. Gaikowski
Management of bacterial kidney disease in Chinook Salmon hatcheries based on broodstock testing by enzyme-linked immunosorbent assay: A multiyear study
From the mid-1980s through the early 1990s, outbreaks of bacterial kidney disease (BKD) caused by Renibacterium salmoninarum continued in Chinook salmon Oncorhynchus tshawytscha in Idaho Department of Fish and Game (IDFG) hatcheries despite the use of three control methods: (1) injection of returning adult fish with erythromycin to reduce prespawning BKD mortality and limit vertical transmission o
Authors
A. Douglas Munson, Diane G. Elliott, Keith Johnson
Effect of water hardness and dissolved-solid concentration on hatching success and egg size in bighead carp
Bighead carp Hypophthalmichthys nobilis is an Asian species that has been introduced to the United States and is regarded as a highly undesirable invader. Soft water has been said to cause the bursting of Asian carp eggs and thus has been suggested as a factor that would limit the spread of this species. To evaluate this, we subjected fertilized eggs of bighead carp to waters with a wide range of
Authors
Duane Chapman, Joseph E. Deters