Potential competition between black crappie and invasive white perch in freshwater reservoirs
Non-native fish have invaded and altered freshwater ecosystems around the world. Many of these species are popular gamefish that have been purposefully introduced beyond their native range to enhance local […]
Habitat preferences and movements of non-native rainbow trout
In many coldwater rivers and streams around the world, nonnative trout have altered the aquatic ecosystem. In the late 1800s, widespread trout stocking became commonplace and various trout species were […]
Invasive Asian shore crabs compete with juvenile lobsters for food and shelter
Asian shore crabs (Hemigrapsus sanguineus; Figure 1) are a small species of crab that live in rocky intertidal habitats along the coast. Native to eastern Asia and the Japanese archipelago, […]
Hide and seek: New ways of predicting invasive lionfish aggregation locations for targeted management
Snorkellers and divers exploring warm tropical waters often encounter a mesmerizing fish species known as a lionfish (Pterois spp., Figure 1). They may look beautiful with their feathery fins and […]
Fighting fish with fish: How biocontrol offers a powerful tool in the invasive removal toolbox
Guest Blog by Ben Armstrong, New Mexico State University Removing invasive fish species to aid native fish populations is easier said than done. System-wide removal of invasive fish with current […]
You can’t eat what you can’t find: how substrate influences egg predation rates by an invasive species
One of the most challenging periods of a fish’s life is centered around reproduction. Many species approach reproduction through nest building. It is generally the males that are tasked with […]
Potential impacts of invasive green crabs on American lobsters
Green crabs (Carcinus maenas) are a relatively small species of crab that live in intertidal zones and shallow coastal waters (Figure 1). They are native to the Atlantic coast of […]
Protecting native brook trout by isolating them from brown trout
In many coldwater streams in North America, nonnative trout are replacing native trout populations through hybridization, competition, and predation. Brook trout (Salvelinus fontinalis; Figure 1) are a species native to […]
What do groundwater seeps and brown trout have in common?
Imagine diving into a cool body of water after exercising or working in hot weather. This is an example of behavioral thermoregulation—changing your actions in order to influence your body […]
Sea lamprey: An invasive species with a long and devastating history in the Laurentian Great Lakes
Imagine a large, suction-like mouth ringed with pointy teeth that seeks out flesh to latch onto and draw blood from. In this case, I’m not describing vampires or other fantasy […]
How many Asian carp does it take to establish a reproductive population in the Laurentian Great Lakes?
There has been growing attention recently about a possible new threat to the Laurentian Great Lakes ecosystem: the invasive Asian carp. You may have even seen footage of these large […]
