文章基本信息

标题：Chemical communication of predation risk in zebrafish does not depend on cortisol increase
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作者：Leonardo J. G. Barcellos ; Gessi Koakoski ; João G. S. da Rosa 等
期刊名称：Scientific Reports
电子版ISSN：2045-2322
出版年度：2015
卷号：4
期号：1
DOI：10.1038/srep05076
语种：English
出版社：Springer Nature
摘要：We investigated chemical cues among groups of zebrafish ( Danio rerio ) when communicating information about the risk of predation. We found that visual cues of the predator (tiger Oscar, Astronotus ocellatus ) did not increase whole-body cortisol levels in groups of zebrafish but that water conditioned by these (donor) zebrafish stressed (target) conspecifics, thereby increasing whole-body cortisol. This finding was confirmed when these zebrafish groups were in different aquaria and communicated exclusively via water transfer. This result indicates that the stress induced in the target zebrafish does not depend on an increase in whole-body cortisol levels in the donor zebrafish. Because cortisol participation is rejected in this predation-risk communication, other chemicals from the stress systems should be investigated.