Instituto de Biociências, UNESP - Universidad Estadual Paulista, Campus de Botucatu - Rubião Jr., Departamento de Fisiologia, 18618-970, Botucatu, São Paulo, Brazil.
PLoS One. 2013;8(1):e54642. doi: 10.1371/journal.pone.0054642. Epub 2013 Jan 18.
In this study, we show that the fish Nile tilapia displays an antipredator response to chemical cues present in the blood of conspecifics. This is the first report of alarm response induced by blood-borne chemical cues in fish. There is a body of evidence showing that chemical cues from epidermal 'club' cells elicit an alarm reaction in fish. However, the chemical cues of these 'club' cells are restricted to certain species of fish. Thus, as a parsimonious explanation, we assume that an alarm response to blood cues is a generalized response among animals because it occurs in mammals, birds and protostomian animals. Moreover, our results suggest that researchers must use caution when studying chemically induced alarm reactions because it is difficult to separate club cell cues from traces of blood.
在这项研究中，我们表明，鱼类罗非鱼对同种血液中存在的化学信号表现出一种防御反应。这是鱼类血液传播的化学信号引起警报反应的第一个报道。有大量证据表明，来自表皮“棒”细胞的化学信号会在鱼类中引起警报反应。然而，这些“棒”细胞的化学信号仅限于某些鱼类物种。因此，作为一种简约的解释，我们假设对血液信号的警报反应是动物中普遍存在的反应，因为它发生在哺乳动物、鸟类和原腔动物中。此外，我们的结果表明，研究人员在研究化学诱导的警报反应时必须小心，因为很难将棒状细胞的信号与血液痕迹分开。
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