Otolith microchemistry and microstructure of age-0 silver carp for determining early-life environments and spawning periodicity in the Upper Mississippi River in 2016

In 2016, for the first time, an abundance of age-0 silver carp (Hypophthalmichthys molitrix) were captured at several sites upstream of Lock and Dam 19 on the Upper Mississippi River near Keokuk, Iowa. These data were collected in an attempt to determine the early life environments and frequency and timing of the reproductive events that led to a large year class of age-0 silver carp. This information is important for informing decisions about control measures. We sampled these fish to determine age (days) and early life environments using their otoliths. Sampled age-0 silver carp were collected from navigation Pools 18 and 19 from July–October 2016 using a variety of sampling gears. We aged these fish by counting...

Categories: Data; Tags: Aquatic Biology, Asian carp, Ecology, Hypophthalmichthys molitrix, Navigation pool 18, All tags... Navigation pool 19, Silver carp, USGS Science Data Catalog (SDC), Upper Mississippi River, biota, invasive carp, otolith microchemistry, otolith stable isotope, recruitment, Fewer tags