2012
DOI: 10.1590/s1679-62252012005000006
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Antipredator and alarm reaction responses of silver catfish (Rhamdia quelen) juveniles exposed to waterborne ammonia

Abstract: Ammonia has relatively toxic effects on fish and other aquatic organisms. This study examined whether juvenile silver catfish exposed to alarm substances released by conspecifics and predators in water with different ammonia levels modify their behaviour in response to the perceived risk of predation. We used juvenile catfish that were naive to predators. The fish were raised from the larval stage in the laboratory and kept in 40-L aquaria at waterborne NH 3 concentrations of 0, 0.05, 0.1, or 0.2 mg L -1 for 1… Show more

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Cited by 7 publications
(5 citation statements)
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References 29 publications
(30 reference statements)
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“…Amazingly, avoidance has been reported in arctic charr at the submicromolar range of ammonia (Olsen, 1986). HEA can also alter the normal olfactory-based responses to other cues (Weber et al, 2012). Future studies should examine the ventilatory response to waterborne ammonia in fish made experimentally anosmic.…”
Section: Are There External Ammonia Receptors Controlling Ventilation?mentioning
confidence: 97%
“…Amazingly, avoidance has been reported in arctic charr at the submicromolar range of ammonia (Olsen, 1986). HEA can also alter the normal olfactory-based responses to other cues (Weber et al, 2012). Future studies should examine the ventilatory response to waterborne ammonia in fish made experimentally anosmic.…”
Section: Are There External Ammonia Receptors Controlling Ventilation?mentioning
confidence: 97%
“…Weber et al (2012) suggested that naive juveniles never exposed to predators are able to identify predators and skin extract from conspecifics by odors. We have here demonstrated that club cells are indeed present in high density in the skin of the jundiá, that these cells are large and rounded, and located in the middle of the stratified epithelium.…”
Section: Concentration Of Skin Homogenatementioning
confidence: 99%
“…Weber et al (2012) observed a decrease in shelter use in juvenile silver catfish exposed to alarm cue, but no change in locomotion. Kochhann et al (2009) found that silver catfish larvae exposed to conspecific skin extract or to predator odor increased the time spent in the shelter and decreased the number of line crossings, a usual antipredator response (Wisenden et al, 2008.…”
Section: Discussionmentioning
confidence: 77%
“…The silver catfish Rhamdia quelen (Quoy & Gaimard, 1824) is a Siluriformes with Neotropical 2 e160036 [2] distribution, endemic to South America and has high commercial value, being widely employed in aquaculture in southern Brazil (Baldisserotto, 2009). This species responds to alarm cues and predator odor (Kochhann et al, 2009;Weber et al, 2012).…”
Section: Introductionmentioning
confidence: 99%