Trophic Ecology of Freshwater Drum in Large Rivers

Wahl, David H.; Bruner, Kathleen A.; Nielsen, Larry A.

doi:10.1080/02705060.1988.9665198

Cited by 16 publications

(15 citation statements)

References 17 publications

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“…Physical and chemical differences in habitat types may account for variations in climate-growth relationships. Drum growth in reservoirs could be especially influenced by seasonal thermal and dissolved oxygen stratification (Coutant and Carroll 1980), which precludes benthivorous fishes such as Freshwater Drum from accessing large portions of benthic habitats in reservoirs (Summerfelt et al 1972;Wahl et al 1988;Sullivan 2009). Conversely, riverine drum growth could be strongly affected by disturbances (e.g., floods).…”

Section: Discussionmentioning

confidence: 99%

“…Conversely, in rivers, floods frequently control macroinvertebrate diversity, abundance, and production (Junk et al 1989;Benke and Parsons 1990;Robinson et al 2004)-a principle prey of adult Freshwater Drum in rivers (Wahl et al 1988). Furthermore, high water levels can dilute prey volumes (Power et al 1995;Rypel 2009), thereby increasing energy expenditures for predators foraging for long periods (Turner and Pitcher 1986), especially if this occurs during a period of typically accelerated growth (i.e., late summer and fall months).…”

Section: Discussionmentioning

confidence: 99%

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Water Body Type Influences Climate–Growth Relationships of Freshwater Drum

Richard

Rypel

2013

Trans Am Fish Soc

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Climate-growth relationships of fish are of increasing research interest. However, few studies have attempted to characterize the extent to which climate-growth relationships may diverge across fundamentally different types of environments. The goal of this study was to examine the effects of climate variability (i.e., temperature, precipitation, global climate indices) on the growth of Freshwater Drum Aplodinotus grunniens and determine the extent to which these relationships differ between lotic and lentic habitats. Freshwater Drum were collected from five river and five reservoir environments in Georgia, Alabama, and Mississippi. Tree-ring techniques were used to standardize annual growth for age (measured using interannual growth increments from otolith sagittae) and growth indices were correlated to annual thermal, hydrologic, and global climate indices. Freshwater Drum expressed distinct and significant climate-growth relationships by water body type. The general pattern observed was that annual drum growth in rivers was significantly correlated to days of year of maximum flow while annual drum growth in reservoirs was significantly correlated to annual variation in number of growing degree-days (GDD). Furthermore, the strength of growth-GDD correlations for drum increased predictably alongside hydraulic retention time of reservoirs. This study reveals that water body type can govern climate-growth relationships in fish and suggests biologists need to be wary of assuming that patterns documented in one population would be wholly applicable to another.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Water Body Type Influences Climate–Growth Relationships of Freshwater Drum

Richard

Rypel

2013

Trans Am Fish Soc

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“…This same reasoning likely applies to freshwater drum, but in the opposite way. Freshwater mussels are a primary prey for drum, and mussels are considerably more abundant and diverse in rivers as opposed to reservoirs (Daiber, 1952;Wahl et al, 1988;Bogan, 1993;Dreves et al, 1996;Rypel et al, 2006). Thus growth and lipids of drum tends to be higher in rivers where this prey is more abundant.…”

Section: Differences In Lipid and Growth Between Hydrologic Habitatsmentioning

confidence: 94%

Hydrologic habitat preferences of select southeastern USA fishes resilient to river ecosystem fragmentation

Rypel

Bayne

2009

Ecohydrology

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Large-scale habitat preferences of riverine taxa are not always revealed by examining community data. Here, we show how lipid and growth can be used to evaluate hydrologic habitat preferences of fishes resilient to river fragmentation (i.e. species that can tolerate river fragmentation by dams, but not collapse). Lipid content was examined for seven fishes in a major southeastern USA reservoir and its largest lotic tributary over the 5 years. Controlling for effects of sex, size and year of collection, largemouth bass, spotted bass and black crappie had significantly higher lipid in lentic habitat. Conversely, channel catfish and freshwater drum had significantly higher lipid in lotic habitat. There were no significant differences in lipid of bluegill and blacktail shiner between hydrologic habitat types. Fish growth produced concordant results as largemouth bass and spotted bass had significantly faster growth in lentic habitat, whereas channel catfish and freshwater drum had significantly faster growth in lotic habitat. We were also able to document a synchronous spike in lipids of these species in both habitat types during a major drought. We surmise that the spike was driven by enhanced primary production, predator-prey concentration and possibly also reduced reproduction during intense drought. Two conclusions are drawn from this study as a whole. First, long-term lipid and growth observations hold promise for evaluating ecological effects of droughts over long time spans. Second, population characteristics are excellent indicators of habitat preferences and could be used more broadly to elucidate how organisms react to river ecosystem fragmentation and restoration initiatives.

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“…Correlation analyses between mean length, weight, and K n of age-0 freshwater drum sampled in October and October catch per effort (C/f; number/min of electrofishing) of age-0 freshwater drum were used to test for potential density-dependent interactions and their subsequent influence on the growth and condition of age-0 freshwater drum. Freshwater drum and many other Missouri River fishes feed on benthic macroinvertebrates Wahl et al 1988;Pflieger 1997). Thus, we also used correlation analysis between mean length, weight, and K n of age-0 freshwater drum and total C/f of these associated species that feed on aquatic macroinvertebrates to examine what effects these other species have on age-0 freshwater drum.…”

Section: Methodsmentioning

confidence: 99%

First‐Year Growth, Condition, and Size‐Selective Winter Mortality of Freshwater Drum in the Lower Missouri River

Braaten

Guy

2004

Transactions of the American Fisheries Society

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We compared first‐year growth and relative condition (Kn) of the 1997 and 1998 year‐classes of freshwater drum Aplodinotus grunniens among three sites in a 235‐km reach of the channelized Missouri River and tested for the occurrence of size‐selective overwinter mortality during the first winter. Prewinter mean length was 15 mm greater, mean weight was 8 g greater, and mean Kn was 5% greater at the upstream site than at the downstream site. The prewinter mean length of age‐0 freshwater drum was significantly greater in 1997 (115 mm) than in 1998 (109 mm), but Kn was significantly greater in 1998 (107) than in 1997 (102). There was no evidence that density‐dependent interactions influenced prewinter growth and Kn. Size‐selective overwinter mortality of the smallest size‐classes of freshwater drum occurred at two of three sites during the 1997–1998 winter, and Kn decreased 9–15%. Size‐selective overwinter mortality of the 1998 cohort of freshwater drum did not occur during the 1998–1999 winter, and Kn declined 0–10%. A prolonged growing season (through early December 1998), in conjunction with less severe winter water temperature conditions, apparently minimized the incidence of size‐selective overwinter mortality for the 1998 cohort of freshwater drum. We conclude that size‐selective overwinter mortality of age‐0 freshwater drum occurs in the lower channelized Missouri River but depends on the length of the prewinter growing season, winter duration, and the severity of winter water temperatures.

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Trophic Ecology of Freshwater Drum in Large Rivers

Cited by 16 publications

References 17 publications

Water Body Type Influences Climate–Growth Relationships of Freshwater Drum

Water Body Type Influences Climate–Growth Relationships of Freshwater Drum

Hydrologic habitat preferences of select southeastern USA fishes resilient to river ecosystem fragmentation

First‐Year Growth, Condition, and Size‐Selective Winter Mortality of Freshwater Drum in the Lower Missouri River

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