scholarly journals Vortices give rusty crayfish a push

2020 ◽  
Vol 223 (15) ◽  
pp. jeb231969
Author(s):  
Kathryn Knight
Keyword(s):  
Rusty Crayfish

Effects of water velocity on the size and shape of rusty crayfish, Orconectes rusticus

2013 ◽  
Vol 32 (4) ◽  
pp. 1398-1409 ◽  
Author(s):  
William L. Perry ◽  
Anthony M. Jacks ◽  
Daniel Fiorenza ◽  
Madeleine Young ◽  
Richard Kuhnke ◽  
...  
Keyword(s):  
Water Velocity ◽  
Orconectes Rusticus ◽  
Rusty Crayfish ◽  
Size And Shape

scholarly journals The role of sensory modalities in producing nonconsumptive effects for a crayfish–bass predator–prey system

2018 ◽  
Vol 96 (7) ◽  
pp. 680-691 ◽  
Author(s):  
Jessica L. Clark ◽  
Paul A. Moore
Keyword(s):  
Micropterus Salmoides ◽  
Interactive Effects ◽  
Predator Detection ◽  
Nonconsumptive Effects ◽  
Predator Prey ◽  
Rusty Crayfish ◽  
Sensory Modalities ◽  
Study Support ◽  
The Impact

The impact of nonconsumptive effects (NCEs) in structuring predator–prey interactions and trophic cascades is a prominent area of ecological research. For NCEs to occur, prey need to be able to detect the presence of predators through sensory mechanisms. The investigation of the role of different sensory modalities in predator detection has lagged behind the development of NCE-based theories. This study aimed to determine whether a hierarchy in the reliance upon sensory modalities exists in the rusty crayfish (Orconectes rusticus (Girard, 1852) = Faxonius rusticus (Girard, 1852)) for predator detection and if this hierarchy is altered across different sensory environments (flowing and nonflowing environments). Rusty crayfish were exposed to largemouth bass (Micropterus salmoides (Lacépède, 1802)) odor in either a flowing or nonflowing arena where behavior was recorded under different sensory lesions. Linear mixed models were conducted to determine the impact of lesions, flowing environments, and the interactive effects of lesions and flowing environments on the rusty crayfish ability to respond to predatory stimuli. Results from this study support the significance of sensory multimodality in the rusty crayfish for accurately detecting and assessing predatory threats. Results from this study also suggest a hierarchy in the reliance upon sensory modalities in the rusty crayfish that is dependent upon the environment and the location of rusty crayfish within an environment.

scholarly journals Effectiveness of stream sampling methods in capturing non-native Rusty Crayfish (Orconectes rusticus) in Ontario

2014 ◽  
Vol 128 (2) ◽  
pp. 111 ◽  
Author(s):  
Scott M. Reid ◽  
Jane Devlin
Keyword(s):  
Sampling Methods ◽  
Capture Probability ◽  
Sexually Active ◽  
Orconectes Rusticus ◽  
Rusty Crayfish ◽  
Stream Sampling ◽  
First Pass ◽  
Native Crayfish ◽  
Removal Model ◽  
Species Removal

Habitat alteration and species introductions have contributed to the decline of native crayfish in Ontario. although lake populations of crayfish in Ontario are monitored, there is no corresponding program for streams. We used removal-based sampling to evaluate the efficacy of three sampling techniques (backpack electrofishing, hand capture, and seining) to characterize native and non-native crayfish populations in six streams in the Kawartha lakes region and five streams in the Muskoka/Haliburton lakes region. all types were effective at detecting non-native Rusty Crayfish (Orconectes rusticus). Rusty Crayfish were collected from 65% of samples, constituted 90% of the total catch, and were the only species present in 30% of streams. Compared with other methods, electrofishing was more likely to capture additional crayfish species. Removal-based sampling was not a reliable approach for estimating capture probability and population size. Failure of the removal model was due to increases in the number of crayfish captured after the first pass or too few individuals collected. Mean capture probabilities for electrofishing (0.30) and hand capture (0.31) did not result in reliable population estimates. Compared with seining, electrofishing and hand capture resulted in more sexually active males (fewer sexually inactive males) and more small (< 25 mm carapace length) individuals. For each method, there were differences in capture probability among length classes. a combination of electrofishing and seining (with multiple passes) would maximize species detection, permit sampling of a range of habitat types, and be easily integrated into existing stream fish surveys.

Fish predation and trapping for rusty crayfish (Orconectes rusticus) control: a whole-lake experiment

2006 ◽  
Vol 63 (2) ◽  
pp. 383-393 ◽  
Author(s):  
Catherine L Hein ◽  
Brian M Roth ◽  
Anthony R Ives ◽  
M Jake Vander Zanden
Keyword(s):  
Growth Rate ◽  
Population Growth ◽  
Population Growth Rate ◽  
Fish Predation ◽  
Reproductive Value ◽  
Orconectes Rusticus ◽  
Long Term Effects ◽  
Structured Population Model ◽  
Rusty Crayfish ◽  
Crayfish Population

Improved methods are needed for the prevention and control of invasive species. We investigated the potential to control a rusty crayfish (Orconectes rusticus) population in an isolated lake in northern Wisconsin by trapping adult crayfish and restricting fishing, thereby increasing fish populations and predation on small crayfish. Over a 3 year period, traps and predatory fishes removed substantial portions of the rusty crayfish population. We used an age-structured population model to determine which removal method had the largest effect on crayfish population growth rates. Because more crayfish were vulnerable to and removed by fish predation than by trapping, fish predation caused a larger decline in the population growth rate. However, trapping removed crayfish with the highest reproductive value and caused the largest decline in population growth rate per individual crayfish removed. Consideration of density-dependent responses to removal is necessary to predict long-term effects on rusty crayfish population dynamics. Nonetheless, our results suggest that the combination of trapping and fish predation can control established rusty crayfish populations and deserves further consideration for management.

Behavioural and growth differences between experienced and naïve populations of a native crayfish in the presence of invasive rusty crayfish

2009 ◽  
Vol 54 (9) ◽  
pp. 1876-1887 ◽  
Author(s):  
NICOLE M. HAYES ◽  
KATRINA J. BUTKAS ◽  
JULIAN D. OLDEN ◽  
M. JAKE VANDER ZANDEN
Keyword(s):  
Rusty Crayfish ◽  
Growth Differences ◽  
Native Crayfish

Reciprocal Relationships Between Exotic Rusty Crayfish, Macrophytes, and Lepomis Species in Northern Wisconsin Lakes

Ecosystems ◽  
2007 ◽  
Vol 10 (1) ◽  
pp. 75-86 ◽  
Author(s):  
Brian M. Roth ◽  
Jakob C. Tetzlaff ◽  
Mara L. Alexander ◽  
James F. Kitchell
Keyword(s):  
Reciprocal Relationships ◽  
Rusty Crayfish
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