A5040251690- Fish Ecology and Management Studies
- Fish Biology and Ecology Studies
- Aquatic Invertebrate Ecology and Behavior
- Hydrology and Sediment Transport Processes
- Aquaculture Nutrition and Growth
- Environmental DNA in Biodiversity Studies
- Hydrology and Watershed Management Studies
- Fish biology, ecology, and behavior
- Reproductive biology and impacts on aquatic species
- Genetic and phenotypic traits in livestock
- Marine and fisheries research
Illinois Department of Natural Resources
2017-2024
Fisheries and Oceans Canada
2001
Growth, survival and condition of redfish larvae Sebastes spp., reared in the laboratory (0, 500 1500 4500 prey l ‐1 ) were highest treatment. Significantly lower larval growth treatment corresponded with bite: orient ratios later weeks, suggesting that unable to forage efficiently at high densities. While these densities are higher than those reported field, naturally co‐occurring Atlantic cod Gadus morhua require when under similar conditions laboratory. These data suggest availability may...
Abstract In river systems, high‐head dams may increase the distance‐decay of fish community similarity by creating nearly impermeable dispersal barriers to certain species from upstream reaches. Substantial evidence suggests that migratory are impacted dams, and most previous studies in stream/river networks have focused on small streams headwaters. Here, we assess whether a dam (Lock Dam 19; LD 19) large river, Upper Mississippi River (UMR), substantially alters structure relative...
Abstract
 Sportfish species, specifically Yellow Bass Morone mississippiensis, White chrysops, Largemouth Micropterus salmoides, Bluegill Lepomis macrochirus, Black Crappie Pomoxis nigromaculatus, and P. annularis, often drive economically valuable fisheries in large river systems, including the Upper Mississippi River System (UMRS). Within Illinois River, part of UMRS, these species are routinely sampled by an ongoing long-term monitoring program. Through this program, we investigated...
Abstract Increasing numbers of Silver Carp Hypophthalmichthys molitrix and Bighead H. nobilis (commonly called “bigheaded carp”) in the Illinois River have led to concerns about impact that their invasion has on native food web dynamics. Bigheaded recruited large LaGrange Reach during summer 2014. This provided an opportunity determine whether piscivorous fish prey upon invasive carp when they are abundant. Using electrofishing fyke nets (August 1–November 8, 2014), we sampled predatory ( n...
Abstract Standardized sampling is useful for detecting and monitoring variations in fish communities the establishment spread of invasive species. Lock Dam 19, a high-head dam with 10- meter hydraulic head, creates largest impoundment on Upper Mississippi River. Upstream, Pool 19 characterized by static water levels expansive macrophyte beds. Downstream, 20 lotic conditions sparse vegetation. serves as barrier to upstream migration fishes, particularly Bigheaded carp (Bighead Carp...
Abstract Bighead Carp Hypophthalmichthys nobilis are native to eastern Asia, have been introduced throughout the world, and subjected immense management where they persist. Identifying sex of during monitoring efforts could provide additional data enhance fishery schemes, thereby facilitating better management. We assessed presence (male) or absence (female) bony ctenoid serrations on upper edge foremost pectoral fin ray noninvasively nonlethally determine 745 collected from March December....