+ Audio version of article
+ Lesson idea video of activities about invasive species
+ Link to HHMI activity about trophic cascades
Scientists wanted to know if catfish, introduced into rivers by people, are a threat to native lampreys.
Scientists wanted to know if African velvet ants have a mimicry system and if they have fewer color patterns than the velvet ants in North America.
Scientists wanted to know whether feral dogs were a problem for naturally occurring carnivores in the Andean mountains in Ecuador.
Scientists wanted to know if catfish prey on salmon in rivers that humans have altered.
Scientists wanted to know how climate change affects the relationship between predatory fish and their plankton prey in an estuary.
Scientists wanted to find out if there was a connection between the number of shrimp (prey) and fish (predators) in the Gulf of Mexico.
