scholarly journals Importance of coarse woody habitat complexity on Yellow Perch egg skein deposition and survival

2021 ◽  
Author(s):  
Stephen J. Grausgruber ◽  
Michael J. Weber ◽  
Joseph E. Morris
Keyword(s):  
Habitat Complexity ◽  
Yellow Perch ◽  
Coarse Woody Habitat

Mechanisms underlying amphipod responses to zebra mussel (Dreissena polymorpha) invasion and implications for fish-amphipod interactions

1999 ◽  
Vol 56 (4) ◽  
pp. 679-685 ◽  
Author(s):  
María J González ◽  
Amy Downing
Keyword(s):  
Zebra Mussel ◽  
Dreissena Polymorpha ◽  
Habitat Complexity ◽  
Yellow Perch ◽  
Lepomis Macrochirus ◽  
Low Complexity ◽  
Substrate Preference ◽  
High Complexity ◽  
Bare Rock ◽  
Predator Species

We examined mechanisms underlying increased amphipod abundance after zebra mussels (Dreissena polymorpha) invaded Lake Erie. We conducted field substrate preference experiments to test the hypotheses that amphipods prefer (i) high-complexity substrates over low-complexity substrates and (or) (ii) substrates with high mussel feces and pseudofeces deposition over substrates with low deposition. We measured amphipod preference for bare rock, live mussels, and dead mussels in spring (May 1996) and summer (July and August 1995, June and August 1996). Habitat complexity affected amphipod habitat preference, and preference varied seasonally. In spring, amphipod density was highest on dead mussels, but the response was highly variable. In midsummer (June and July), amphipods showed no substrate preference. In late summer (August), amphipods consistently preferred high-complexity mussel substrates. Amphipods never preferred low-complexity substrates. We also evaluated effects of zebra mussel presence on fish-amphipod interactions in laboratory feeding trials. We tested the hypothesis that mussel presence decreases bluegill (Lepomis macrochirus) and yellow perch (Perca flavescens) predation on amphipods. Predation by bluegill but not yellow perch was significantly lowered by mussel presence. Our results support the hypothesis that the increase in amphipods upon zebra mussel invasion is due to increased habitat complexity, possibly by reducing predation risk. However, the effects of zebra mussel on fish-amphipod interactions depended on predator species.

Drought-driven lake level decline: effects on coarse woody habitat and fishes

2014 ◽  
Vol 71 (2) ◽  
pp. 315-325 ◽  
Author(s):  
Jereme W. Gaeta ◽  
Greg G. Sass ◽  
Stephen R. Carpenter
Keyword(s):  
Climate Change ◽  
Species Interactions ◽  
Yellow Perch ◽  
Lake Level ◽  
Micropterus Salmoides ◽  
Little Rock ◽  
Littoral Habitat ◽  
Littoral Zones ◽  
Coarse Woody Habitat ◽  
Rock Lake

Research testing for the effects of climate change on lentic fishes has focused on changing thermal and dissolved oxygen regimes, but has often overlooked potential influences of altered lake levels on littoral habitat availability and species interactions. Natural littoral structures such as coarse woody habitat (CWH) can be critical to fishes for prey production, refuge, and spawning. Drought-driven lake level declines may strand these structures above the waterline and thereby remove them from littoral zones. A prolonged drought in northern Wisconsin, USA, allowed us to test for effects of lake level decline on CWH and the response of a fish community. During our study (2001–2009), the lake level of Little Rock Lake South declined over 1.1 m and >75% of the previously submerged CWH was lost from the littoral zone. The loss of CWH coincided with the forage fish species (yellow perch, Perca flavescens) falling below detection and reduced growth of the top piscivore (largemouth bass, Micropterus salmoides). Our study highlights the importance of lake level fluctuations as a mechanism by which climate change may affect aquatic ecosystems and species interactions.

Fish community structure, habitat complexity, and soundscape characteristics of patch reefs in a tropical, back-reef system

2019 ◽  
Vol 609 ◽  
pp. 33-48 ◽  
Author(s):  
RP Lyon ◽  
DB Eggleston ◽  
DR Bohnenstiehl ◽  
CA Layman ◽  
SW Ricci ◽  
...  
Keyword(s):  
Community Structure ◽  
Habitat Complexity ◽  
Fish Community ◽  
Back Reef ◽  
Fish Community Structure ◽  
Patch Reefs ◽  
Reef System

Organochlorine Residues in Brook Trout and Yellow Perch From New Brunswick and Nova Scotia (Canada) Lakes

1987 ◽  
Vol 22 (3) ◽  
pp. 352-364
Author(s):  
R. Peterson ◽  
S. Ray
Keyword(s):  
Nova Scotia ◽  
New Brunswick ◽  
Brook Trout ◽  
Yellow Perch ◽  
Intensive Agriculture ◽  
Fish Tissues ◽  
North Central ◽  
Ddt Metabolites ◽  
Headwater Lakes

Abstract Brook trout and yellow perch collected while surveying New Brunswick and Nova Scotia headwater lakes were analyzed for DDT metabolites, chlordane, hexacyclohexane isomers, hexachlorobenzene, toxaphene and PCB’s. Concentrations of DDT metabolites were much higher from fish taken from lakes in north-central N.B. (200-700 ng/g wet wt) than from fish taken elsewhere (<10 ng/g). Seventy to 90% of the DDT metabolites was DDE. Chlordane (3-13 ng/g) was analyzed in seven trout, six of them from central N.B. areas with intensive agriculture. Isomers of hexachlorocyclohexane were in highest concentration from north-central N.B. (10-20 ng/g), eastern N.S. (5-15 ng/g) and southern N.B. (5-20 ng/g). In most cases, alpha-hexachlorocyclohexane (lindane) was the isomer in highest concentration. Concentrations of hexachlorobenzene in fish tissues was highly variable with no obvious geographic bias. PCB’s were detected in very few fish, and no toxaphene was detected.

Public Evaluation of Fish Tainting from Pulp and Paper Mill Discharges

1992 ◽  
Vol 25 (2) ◽  
pp. 57-64
Author(s):  
C. G. Jardine
Keyword(s):  
Yellow Perch ◽  
Action Plan ◽  
Pulp Mill ◽  
Paper Mill ◽  
Pulp And Paper ◽  
Salmo Gairdneri ◽  
Pulp And Paper Mill ◽  
Advisory Committees ◽  
Public Advisory ◽  
St Lawrence River

As part of the Remedial Action Plan (RAP) programs for the St. Lawrence and Spanish Rivers in Ontario, Canada, tainting evaluations were conducted using members of the Public Advisory Committees (PACs) and the RAP teams. Triangle test sensory evaluations were conducted on caged rainbow trout (Salmo gairdneri) exposed insitu upstream and downstream of the pulp and paper mill diffuser outfalls In the St. Lawrence River only, evaluations were conducted on indigenous yellow perch (Perca flavescens) caught upstream and downstream of the mill discharge . In both locations, the odour of the flesh from the caged trout exposed above the diffuser outfall was not judged significantly different from caged trout exposed downstream of the discharge. However, the indigenous perch caught downstream of the mill in the St. Lawrence River were judged by the panelists to have a significantly more objectionable odour than those caught upstream of the discharge. While the effluent tainting potential appears to have been eliminated in the Spanish River, further studies are required to determine the source and magnitude of tainting concerns in the St. Lawrence River. The sensory test and results reported here provide useful tools for evaluating the tainting potential of pulp mill discharges and for assessing perceived consumer quality of the fish exposed to these effluents.

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