Growth rate responses of Missouri and Lower Yellowstone River fishes to a latitudinal gradient

Abstract

Notropis atherinoides, freshwater drums Aplodinotus grunniens, river carpsuckers Carpiodes carpio and saugers Stizostedion canadense collected in 1996-1998 from nine river sections of the Missouri and lower Yellowstone rivers at two life-stages (young-of-the-year and age 1+ years) were significantly different among sections. However, they showed no river-wide latitudinal trend except for age 1+ years emerald shiners that did show a weak negative relation between growth and both latitude and length of growing season. The results suggest growth rates of fishes along the Missouri River system are complex and could be of significance in the management and conservation of fish communities in this altered system. RightsWorks produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.

Variability in the growth rate of chub Leuciscus cephalus along a longitudinal river gradient

“…Since growth is related to fish size, which in turn is related to several other life‐history traits (Peters, 1983), the present results have clear consequences for future large‐scale comparative studies, particularly those focusing on latitudinal variability in freshwater fish species traits (Lobón‐Cerviá et al , 1996; Pegg & Pierce, 2001; Heibo et al , 2005; Blanck & Lamouroux, 2007; Lappalainen & Tarkan, 2007). Authors comparing freshwater fish populations from different drainages often use data from the literature and try to reach a whole species distribution range but without accounting for local habitat characteristics.…”

“…Because riverine fish species often have particular habitat requirements (Buisson et al , 2008), restricting their distribution within rivers, variability in fish growth has usually been the focus of local‐scale studies (Abdoli et al , 2007). At large spatial scales and except for latitudinal studies (Heibo et al , 2005; Blanck & Lamouroux, 2007), very few papers have considered large environmental gradients in comparative approaches of intraspecific variation in growth rates (Przybylski, 1996; Pegg & Pierce, 2001).…”

Flow alteration and thermal pollution depress modelled growth rates of an iconic riverine fish, the Murray cod Maccullochella peelii

“…The adverse bioenergetic responses of the species directly downstream of the impoundment are consistent with the predictions of reduced abundance and spawning success (Sherman et al., ; Thoms et al., ). Pegg and Pierce () similarly showed that native fish, including channel catfish ( Ictalurus punctatus ), emerald shiner ( Notropis atherinoides ) and freshwater drum ( Aplodinotus grunniens ), were largely absent or had low growth rates, downstream of impoundments of the Missouri River, USA. Our model predicted that juvenile Murray cod were gradually released from these bioenergetic constraints as flow velocity declined and temperature increased along the disturbance gradient.…”

Spatial and temporal scales of adaptive divergence in marine fishes and the implications for conservation

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