Please use this identifier to cite or link to this item:
Title: Cadmium-induced disruption of environmental exploration and chemical communication in matrinxã, Brycon amazonicus
Authors: Honda, Rubens Tomio
Fernandes-De-Castilho, Marisa
Val, Adalberto Luis
Keywords: Cadmium
Alarm Signal
Behavioral Response
Chemical Cue
Communication Behavior
Endemic Species
Pollution Exposure
Spatial Distribution
Water Pollution
Analysis Of Variance
Behavior, Animals
Controlled Study
Environmental Impact
Priority Journal
Statistical Significance
Water Contamination
Behavior, Animals
Motor Activity
Random Allocation
Water Pollutants, Chemical
Amazon Basin
South America
Issue Date: 2008
metadata.dc.publisher.journal: Aquatic Toxicology
metadata.dc.relation.ispartof: Volume 89, Número 3, Pags. 204-206
Abstract: The effects of cadmium exposure on both environment exploration and behavioral responses induced by alarm substance in matrinxã (Brycon amazonicus), a fish species endemic to the Amazon basin, were investigated. Fish exposed to 9.04 ± 0.07 μg/L waterborne cadmium for 96 h followed by 24 h depuration period in clean water, were video-recorded for 15 min, followed by immediate introduction of conspecific skin extract to the tank and a new 30 min period of fish video-recording. Cd-exposed matrinxã showed a significantly lowered locomotor activity (t-test t12 = 2.7; p = 0.025) and spatial distribution (t-test t12 = 2.4; p = 0.03) relative to the unexposed control fish prior to the alarm substance introduction, and did not present any significant reaction when the skin extract was introduced. The control fish, in opposite, showed a higher level of activity and spatial distribution prior the skin extract contact and significantly decreased their response after the chemical stimulus (locomotion-repeated-measure ANOVA F1,11 = 5.6; p = 0.04; spatial distribution F1,11 = 19.4; p = 0.001). In conclusion, exposure to a low level of cadmium affects both the environment exploration performance and the conspecific chemical communication in matrinxã. If the reduced environmental exploration performance of Cd-exposed fish is an adjustment to the compromised chemical communication or an independent effect of cadmium is the next step to be investigated. © 2008 Elsevier B.V. All rights reserved.
metadata.dc.identifier.doi: 10.1016/j.aquatox.2008.07.001
Appears in Collections:Artigos

Files in This Item:
There are no files associated with this item.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.