Responses of Acilius sulcatus (Coleoptera: Dytiscidae) to chemical cues from perch ( Perca fluviatilis )

Oecologia ◽  
1997 ◽  
Vol 111 (2) ◽  
pp. 166-171 ◽  
Author(s):  
Kajsa Åbjörnsson ◽  
Bálint M. A. Wagner ◽  
Anna Axelsson ◽  
Rickard Bjerselius ◽  
K. Håkan Olsén
Keyword(s):  
Chemical Cues ◽  
Perca Fluviatilis ◽  
Perch Perca Fluviatilis

scholarly journals Predator recognition and responses in the endangered Macquarie perch (Macquaria australasica)

2015 ◽  
Vol 66 (2) ◽  
pp. 127 ◽  
Author(s):  
Culum Brown ◽  
Jennifer Morgan
Keyword(s):  
Invasive Species ◽  
Endangered Species ◽  
Introduced Species ◽  
Visual Cues ◽  
Chemical Cues ◽  
Conservation Management ◽  
Perca Fluviatilis ◽  
Habitat Destruction ◽  
Perch Perca Fluviatilis ◽  
Threatening Processes

Macquarie perch, Macquaria austalasica, is an endangered species endemic to southern Australia whose distribution is highly fragmented and continues to decline. Key threatening processes include habitat destruction, dams and weirs, overfishing and interactions with introduced species. Here, we examined the responses of small and large Macquarie perch to two native predators and to the introduced redfin perch, Perca fluviatilis. Our results showed that Macquarie perch generally avoided large-bodied native predators but was attracted to small-bodied native predators. Responses to large and small redfin perch lay between these two extremes, suggesting that the Macquarie perch does treat these foreign fish as potential threats. Macquarie perch relied on both visual and chemical cues to identify predators, although its response tended to be stronger when exposed to visual cues. The results suggest that Macquarie perch has the capacity to recognise and respond to invasive species in a threat-sensitive manner, which has positive implications for the conservation management of the species.

scholarly journals Perch, Perca fluviatilis show a directional preference for, but do not increase attacks toward, prey in response to water-borne cortisol

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3883 ◽  
Author(s):  
Lindsay J. Henderson ◽  
Mary R. Ryan ◽  
Hannah M. Rowland
Keyword(s):  
Visual Cues ◽  
Chemical Cues ◽  
Public Information ◽  
Perca Fluviatilis ◽  
Predatory Behavior ◽  
Predator Prey ◽  
Perch Perca Fluviatilis ◽  
Directional Preference ◽  
Response To Water ◽  
Water Borne

In freshwater environments, chemosensory cues play an important role in predator-prey interactions. Prey use a variety of chemosensory cues to detect and avoid predators. However, whether predators use the chemical cues released by disturbed or stressed prey has received less attention. Here we tested the hypothesis that the disturbance cue cortisol, in conjunction with visual cues of prey, elevates predatory behavior. We presented predators (perch, Perca fluviatilis) with three chemosensory choice tests and recorded their location, orientation, and aggressive behavior. We compared the responses of predators when provided with (i) visual cues of prey only (two adjacent tanks containing sticklebacks); (ii) visual and natural chemical cues of prey vs. visual cues only; and (iii) visual cues of prey with cortisol vs. visual cues only. Perch spent a significantly higher proportion of time in proximity to prey, and orientated toward prey more, when presented with a cortisol stimulus plus visual cues, relative to presentations of visual and natural chemical cues of prey, or visual cues of prey only. There was a trend that perch directed a higher proportion of predatory behaviors (number of lunges) toward sticklebacks when presented with a cortisol stimulus plus visual cues, relative to the other chemosensory conditions. But they did not show a significant increase in total predatory behavior in response to cortisol. Therefore, it is not clear whether water-borne cortisol, in conjunction with visual cues of prey, affects predatory behavior. Our results provide evidence that cortisol could be a source of public information about prey state and/or disturbance, but further work is required to confirm this.

Consumption of plant material by perch (Perca fluviatilis)

2016 ◽  
Vol 65 (2) ◽  
pp. 95-97 ◽  
Author(s):  
Tomáš Zapletal ◽  
Zdeněk Adámek ◽  
Pavel Jurajda ◽  
Kevin Roche ◽  
Lucie Všetičková ◽  
...  
Keyword(s):  
Plant Material ◽  
Perca Fluviatilis ◽  
Perch Perca Fluviatilis

Short-term storage of perch (Perca fluviatilis L.) milt under cooling conditions

2013 ◽  
Vol 13 ◽  
pp. 39 ◽  
Author(s):  
Beata Sarosiek ◽  
Beata I. Cejko ◽  
Dariusz Kucharczyk ◽  
Daniel Żarski ◽  
Sylwia Judycka ◽  
...  
Keyword(s):  
Perca Fluviatilis ◽  
Short Term ◽  
Cooling Conditions ◽  
Perch Perca Fluviatilis ◽  
Short Term Storage ◽  
Term Storage
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