Larval Fish Transport: A Case Study of White Bass

Abstract

Larval white bass Morone chrysops resisted downstream transport in the Hoiston River, eastern Tennessee. Despite a short hydraulic-transport time (<20 hours) through the study area (19.8 km), larvae were not transported downstream and out of this region soon after hatching. Recently hatched larvae were collected near a dam that blocks migration of spawning adults at the upper end of the study area; however, downstream from the dam larvae were significantly larger (and older) than expected if they had been transported passively through the area. Larval white bass probably remain near bottom or in other low-velocity refugia that effectively reduce downstream displacement. Hybrid striped bass Morone saxatilis x white bass larvae 4 mm and longer oriented upstream in our laboratory flume; they swam vigorously and utilized areas of low current velocity to reduce downstream displacement. Retarded downstream transport found in the rivefine environment, coupled with laboratory observations, implies that improvements are needed in models used to estimate entrainment of fish larvae.

Interannual variability in seasonal dynamics and species composition of drifting young‐of‐the‐year fishes in two European lowland rivers

“…The fact that most fishes present at the locality also drifted was reported from the River Volga basin (Pavlov, 1994) but, typically, few fish species dominated drift samples (Brown & Armstrong, 1985;Carter et al, 1986;Jurajda, 1998). Some YOY fishes are known to avoid drift (Starnes & Hackney, 1983; T IV. List of species drifting in the River Kyjovka in 1997Kyjovka in , 1999Kyjovka in and 2000 Kennedy & Vinyard, 1997).…”

Interannual variability in seasonal dynamics and species composition of drifting young-of-the-year fishes in two European lowland rivers

“…The fact that most fishes present at the locality also drifted was reported from the River Volga basin (Pavlov, 1994) but, typically, few fish species dominated drift samples (Brown & Armstrong, 1985;Carter et al, 1986;Jurajda, 1998). Some YOY fishes are known to avoid drift (Starnes & Hackney, 1983; Kennedy & Vinyard, 1997). For example chub, Leuciscus cephalus (L.), was one of the most common species in adult and YOY fish assemblages in the River Morava (Jurajda & Peňáz, 1994;Jurajda, 1995), but was rare in drift samples.…”

Larval Fish Use of Dike Structures on a Navigable River

“…In 2003, we found that increased river flow was related to increased turbidity, so this could be a possible explanation. Under high flows, larvae may be less active, seeking to maximize their retention in nonturbulent areas (Starnes et al 1983). However, research showed that light traps were the best available gear for sampling these habitats (Niles and Hartman 2007).…”