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Find out more about Biological Threat and Invasive Species Research through our publications.

Filter Total Items: 308

Realizing the potential of eDNA biodiversity monitoring tools in the marine environment with application to offshore renewable energy

The U.S. Geological Survey (USGS) researches the biological diversity and distribution of species to support management, conservation, and resource use decisions. USGS scientists advance detection and monitoring technologies to assess changes in fish and wildlife populations, biodiversity, and the health of ecosystems. The United States is planning to install 30 gigawatts of offshore marine and wi
Adam Sepulveda, Cheryl Morrison, Maggie Hunter, Mona Khalil

READI-Net—Providing tools for the early detection and management of aquatic invasive species

OverviewEarly detection of biological threats, such as invasive species, increases the likelihood that control efforts will be successful and cost-effective. Environmental deoxyribonucleic acid (eDNA) sampling is an established method for the efficient and sensitive early detection of new biological threats. The Rapid eDNA Assessment and Deployment Initiative & Network (READI-Net) is a project des
Lisa McKeon, Todd Wojtowicz

Zebra and Quagga mussels in the United States—Dreissenid mussel research by the U.S. Geological Survey

The U.S. Geological Survey (USGS) delivers high-quality data, technologies, and decision-support tools to help managers both reduce existing populations and control the spread of dreissenid mussels. The USGS researches ecology, biology, risk assessment, and early detection and rapid response methods; provides decision support; and develops and tests control measures.
Cayla R. Morningstar, Patrick M. Kočovský, Michael E. Colvin, Timothy D. Counihan, Wesley M. Daniel, Peter C. Esselman, Cathy A. Richter, Adam Sepulveda, Diane L. Waller

Evaluating management alternatives for Wyoming elk feedgrounds in consideration of chronic wasting disease

Executive SummaryThe authors used decision and modeling analyses to evaluate management alternatives for a decision on whether to permit Cervus canadensis (elk) feeding on two sites on Bridger-Teton National Forest, Dell Creek and Forest Park. Supplemental feeding of elk could increase the transmission of chronic wasting disease (CWD) locally and disease spread regionally, potentially impacting el

Jonathan D. Cook, Paul C. Cross, Emily M. Tomaszewski, Eric K. Cole, Evan H. Campbell Grant, James M. Wilder, Michael C. Runge

A meta-analysis of the stony coral tissue loss disease microbiome finds key bacteria in unaffected and lesion tissue in diseased colonies

Stony coral tissue loss disease (SCTLD) has been causing significant whole colony mortality on reefs in Florida and the Caribbean. The cause of SCTLD remains unknown, with the limited concurrence of SCTLD-associated bacteria among studies. We conducted a meta-analysis of 16S ribosomal RNA gene datasets generated by 16 field and laboratory SCTLD studies to find consistent bacteria associated with S

Stephanie M. Rosales, Lindsay K. Huebner, James S. Evans, Amy Apprill, Andew C. Baker, Anthony J. Bellantuono, Marilyn E. Brandt, Abigail S. Clark, Javier del Campo, Caroline E. Dennison, Katherine R. Eaton, Naomi E. Huntley, Christina A. Kellogg, Monica Medina, Julie L. Meyer, Erinn M. Muller, Mauricio Rodriguez-Lanetty, Jennifer L. Salerno, W. Bane Schill, Erin N. Shilling, Julia Marie Stewart, Joshua D. Voss

An assessment of fish herding techniques: Management implications for mass removal and control of silver carp

We assessed the effectiveness of herding techniques on adult Silver Carp Hypophthalmichthys molitrix in a tributary to the Missouri River. Sites (600 m) were contained using block nets and treated with one of five herding techniques: (1) a method commonly used by commercial fishers in the United States (commercial technique), (2) pulsed-DC electrofishing (electric technique), (3) broadband sound a
Josey Lee Ridgway, Katelyn M. Lawson, Stephen August Shier, Robin Calfee, Duane Chapman

The effects of cheatgrass invasion on US Great Basin carbon storage depend on interactions between plant community composition, precipitation seasonality, and soil climate regime

Annual-grass invasions are transforming desert ecosystems in ways that affect ecosystem carbon (C) balance, but previous studies do not agree on the pattern, magnitude and direction of changes. A recent meta-analysis of 41 articles and 386 sites concludes that invasion by annual grasses such as cheatgrass (Bromus tectorum L) reduces C in biomass across the Great Basin (Nagy et al., 2021). Reanalys
Toby M Maxwell, Matthew J. Germino

Social effects of rabies infection in male vampire bats (Desmodus rotundus)

Rabies virus (RABV) transmitted by the common vampire bat (Desmodus rotundus) poses a threat to agricultural development and public health throughout the Neotropics. The ecology and evolution of rabies host-pathogen dynamics are influenced by two infection-induced behavioral changes. RABV-infected hosts often exhibit increased aggression which facilitates transmission, and rabies also leads to red
Elsa M. Cárdenas-Canales, Sebastian Stockmaier, Eleanor Cronin, Tonie E. Rocke, Jorge E. Osorio, Gerald G. Carter

A recombinant rabies vaccine that prevents viral shedding in rabid common vampire bats (Desmodus rotundus)

Vampire bat transmitted rabies (VBR) is a continuing burden to public health and agricultural sectors in Latin America, despite decades-long efforts to control the disease by culling bat populations. Culling has been shown to disperse bats, leading to an increased spread of rabies. Thus, non-lethal strategies to control VBR, such as vaccination, are desired. Here, we evaluated the safety and effic
Elsa M. Cárdenas-Canales, Andres Velasco-Villa, James A. Ellison, Panayampalli S. Satheshkumar, Jorge E. Osario, Tonie E. Rocke

Open removal models with temporary emigration and population dynamics to inform invasive animal management

Removal sampling data are the primary source of monitoring information for many populations (e.g., invasive species, fisheries). Population dynamics, temporary emigration, and imperfect detection are common sources of variation in monitoring data and are key parameters for informing management. We developed two open robust-design removal models for simultaneously modeling population dynamics, temp
Bradley Udell, Julien Martin, Christina Romagosa, J. Hardin Waddle, Fred Johnson, Bryan Falk, Amy A. Yackel Adams, Sarah Funck, Jennifer Ketterlin Eckles, Eric Suarez, Frank Mazzotti

Morbidity and mortality of Hawaiin geese (Branta sandvicensis) and Laysan albatross (Phoebastria immutabilis) associated with reticuloendotheliosis virus

Only one virus, Avipox, has been documented previously in wild birds in Hawaii. Using immunohistochemistry and PCR, we found that two native threatened Hawaiian Geese (Branta sandvicensis), one with multicentric histiocytoma and the other with toxoplasmosis, and one Laysan Albatross (Phoebastria immutabilis) with avian pox were infected with reticuloendotheliosis virus (REV). The virus was isolate
Thierry M. Work, Renee Breeden, Julie Dagenais, Robert Rameyer, Holly Sellers, Hon S. Ip, James W. Casey

Egg retention in wild-caught Python bivittatus in the Greater Everglades Ecosystem, Florida, USA

Retention of eggs in oviducts beyond the normal oviposition period is a common problem for captive reptiles, but the occurrence of egg retention in wild populations is largely unknown. The Burmese python (Python [molurus] bivittatus; Kühl 1820) is an oviparous snake native to south-eastern Asia that is now established in southern Florida. From 2011–2019, invasive Burmese pythons were opportunistic
Gretchen Erika Anderson, Frank N. Ridgley, Jillian Maureen Josimovich, Robert Reed, Bryan G. Falk, Amy A. Yackel Adams, Andrea Faye Currylow