Temporal Variation in Microhabitat Use by Age-0 Smallmouth Bass in the North Anna River, Virginia

Sabo, Matthew J.; Orth, Donald J.

doi:10.1577/1548-8659(1994)123<0733:tvimub>2.3.co;2

Cited by 37 publications

(48 citation statements)

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“…Spawning fishes have a greater susceptibility to predation because their attention to courtship and spawning activities can reduce their awareness of potential predators (Candolin & Voigt 1998, Sancho 2000. Increased habitat rugosity reduces the risk of predation on fishes (Hixon & Beets 1993), and other studies have shown a relationship between increased rugosity and spawning site selection (Sabo & Orth 1994, Sancho et al 2000a.…”

Section: Habitat Variationmentioning

confidence: 88%

Selection of a spawning aggregation site by Chromis hypsilepis (Pisces: Pomacentridae): habitat structure, transport potential, and food availability

Gladstone¹

2007

Mar. Ecol. Prog. Ser.

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Spawning aggregations form when fishes migrate to a site from their normal feeding grounds and form temporary groupings for breeding. Spawning aggregation sites are spatially rare, and demonstrating differences between a spawning aggregation site and unselected sites nearby is the first step towards understanding the benefits provided by the aggregation site. Chromis hypsilepis (Pomacentridae) is a demersally spawning reef fish, one population of which reproduces in a large, single aggregation at a rocky reef off the central coast of New South Wales, Australia. This study compared the habitat structure (rugosity, reef slope, substratum particle size, and abundance of preferred spawning microhabitat) of the spawning aggregation site and several non-spawning sites, and tested the hypotheses that the spawning aggregation site provided greater off-reef larval transport and prey availability for brooding males. Substratum rugosity was significantly greater and the preferred spawning microhabitat was significantly more abundant at the spawning aggregation site. Reef relief and substratum particle size were not significantly different from non-spawning sites. Passively drifting surface current drogues released at the spawning aggregation site were more rapidly transported off the reef, but did not travel further or faster, than drogues released at a nonspawning site over a 12 h period. Biomass of the preferred prey (copepods of 0.441 to 1.49 mm equivalent spherical diameter) was not significantly greater, but was less variable, at the spawning aggregation site.

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Section: Habitat Variationmentioning

confidence: 88%

Selection of a spawning aggregation site by Chromis hypsilepis (Pisces: Pomacentridae): habitat structure, transport potential, and food availability

Gladstone¹

2007

Mar. Ecol. Prog. Ser.

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“…For smallmouth bass, effects of high discharges on recruitment are well understood and nearly universally negative (Smith et al 2005). Floods scour nests (Montgomery et al 1980;Lukas & Orth 1995), displace fry (Harvey 1987;Simonson & Swensen 1990;Sabo & Orth 1994), and decrease availability of shallow pools (Aadland 1993). These effects reduce recruitment when floods occur from May to June and overlap spawning (Scott & Crossman 1973;Smith et al 2005), as in the Missouri River in 2011.…”

Section: Discussionmentioning

confidence: 99%

Effects of historic flooding on fishes and aquatic habitats in a Missouri River delta

Carlson

Fincel²,

Longhenry³

et al. 2016

Journal of Freshwater Ecology

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Understanding the effects of disturbances on aquatic biota is important for management of the world's rivers. Riverine deltas are among the most biologically productive ecosystems, yet the ecological effects of floods in deltas are poorly understood. Therefore, the goal of this study was to examine impacts of an historic flood in the Missouri River basin in 2011 on fishes and aquatic habitats in the Lewis and Clark Delta, located in South Dakota and Nebraska, USA. Fish community structural indices declined in the six years preceding the flood, with species richness and diversity (Fisher's a) decreasing from 25 to 22 and 4.56 to 3.48, respectively. However, the fish community exhibited short-term resistance to the flood as both metrics were similar to pre-flood levels after the disturbance in 2012. Evenness (J 0 ) declined from 0.88 to 0.73 before the flood but increased to 0.84 after the disturbance. The majority of species exhibited greater relative abundance after the flood regardless of age class (i.e., juvenile, adult), morphology (i.e., small-bodied, large-bodied), introduction history (i.e., introduced, native), or recreational importance (i.e., sport fish, non-recreational). However, the flood reduced relative abundance of juvenile freshwater drum (Aplodinotus grunniens) and white crappie (Pomoxis annularis) and did not affect the three small-bodied species that were studied, including emerald shiner (Notropis atherinoides), red shiner (Cyprinella lutrensis), and spotfin shiner (Cyprinella spiloptera). The flood decreased side channel and backwater frequency and width/area but increased sandbar abundance. Physical alterations evidently had minimal effects on structural indices of the fish community. However, an overall increase in relative abundance across species suggests that interspersed fluvial and slackwater habitats in the delta provided refuge from floodwaters during the disturbance. Maintaining habitat connectivity in deltas during and after floods is particularly important for fisheries conservation. Illustrating the ecological effects and implications of a major flood, this study contributes to the nascent field of delta ecology.

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“…The North Anna River is an impounded tributary of the York River, and its hydrology and biological characteristics were described in previous studies (Simmons & Voshell 1978, Kondratieff & Voshell 1980, Sabo & Orth 1994. We restricted our study to a reach of the river extending 640 m upstream from the 601 Hanover County bridge.…”

Section: Study Sitementioning

confidence: 99%

“…The study site was divided into eight sections based on habitat characteristics: 4 pools, 3 riffles, and 1 run. Based on transect counts (Sabo & Orth 1994) we estimated that there were 60 age-0 smallmouth bass within this reach. Mean daily water temperatures in the river were recorded by a thermograph maintained approximately 3 km upstream of the study site.…”

Section: Study Sitementioning

confidence: 99%

“…In rivers and streams, age-0 smallmouth bass, Micropterus dofomieu, can alter their microhabitat use throughout the course of ontogenetic development, using not only the pool habitats where they were spawned but also moving into shallower areas associated with riffles and runs (Sabo & Orth 1994). This microhabitat shift occurs 6-8 weeks after larvae leave the nest and after they have grown larger than 30 mm in total length.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Effect of stream microhabitat characteristics on rate of net energy gain by juvenile smallmouth bass, Micropterus dolomieu

1996

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SynopsisWe estimated the rate of energy consumed and expended by 43 juvenile smallmouth bass, Micropterus dolomieu, videotaped in the North Anna River during 1991. Habitat data were also collected in the areas where each individual was videotaped. The net rate of energy gained (Jemin") increased as water depths decreased and mean water-column velocities increased. This relationship remained statistically significant even when we assumed that consumption was as little as 40% of our original estimates, and that respiratory costs were three times higher than we suspected. The net rate of energy gained by juvenile smallmouth bass was only affected by the characteristics of the area that they searched and not the foraging tactics they employed.

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Temporal Variation in Microhabitat Use by Age-0 Smallmouth Bass in the North Anna River, Virginia

Cited by 37 publications

References 0 publications

Selection of a spawning aggregation site by Chromis hypsilepis (Pisces: Pomacentridae): habitat structure, transport potential, and food availability

Selection of a spawning aggregation site by Chromis hypsilepis (Pisces: Pomacentridae): habitat structure, transport potential, and food availability

Effects of historic flooding on fishes and aquatic habitats in a Missouri River delta

Effect of stream microhabitat characteristics on rate of net energy gain by juvenile smallmouth bass, Micropterus dolomieu

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