Pintos Santiago, Cavallino Luciano, Yañez Agustina Vidal, Pandolfi Matias, Pozzi Andrea G
Laboratorio de Neuroendocrinología y Comportamiento en Peces y Anfibios, Departamento de Biodiversidad y Biología experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina.
Laboratorio de Neuroendocrinología y Comportamiento en Peces y Anfibios, Departamento de Biodiversidad y Biología experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Argentina; Instituto de Biodiversidad y Biología Experimental y Aplicada-CONICET, Buenos Aires, Argentina.
Behav Processes. 2021 Dec;193:104533. doi: 10.1016/j.beproc.2021.104533. Epub 2021 Oct 20.
Chemical communication can induce a multitude of behaviours when detected by fish olfactory systems, from parental care, predation and alarm signalling, to foraging, schooling, reproduction, and migration. Chemical cues provide information that visual traits cannot and fish can respond to chemical cues without any additional sensory cue. In this way, pheromones play an essential role in the fitness of fishes. Given that Aphyocharax anisitsi inhabits environments characterized by cloudy and highly vegetated waters, it is interesting to evaluate the olfactory contribution in their communication. Here, we investigated the relevance of chemical cues in the types of behaviours triggered in A anisitsi by two experimental contexts: 1) non-social and olfactory context (conspecific-chemical cues), and 2) social context (conspecific female or male presence). Non-social context experiments suggest that males of A. anisitsi respond to both male and female-chemical cues even in the absence of other sensory inputs. The high olfactory sensitivity of characids in general and of A. anisitsi, in particular, could facilitate vital functions, such as foraging and conspecific recognition in habitats that impose severe restrictions on the visual system.
当鱼类嗅觉系统检测到化学信号时，化学通讯能够诱发多种行为，包括亲代抚育、捕食、警报信号、觅食、集群、繁殖和洄游等。化学信号能提供视觉特征所无法提供的信息，并且鱼类无需任何额外的感官信号就能对化学信号做出反应。通过这种方式，信息素在鱼类的适应性方面发挥着至关重要的作用。鉴于阿氏魮脂鲤栖息于水体浑浊且植被茂盛的环境中，评估嗅觉在其通讯中的作用就显得很有趣。在此，我们研究了在两种实验情境下化学信号对阿氏魮脂鲤引发的行为类型的相关性：1）非社交性嗅觉情境（同种化学信号），以及2）社交情境（同种雌性或雄性的存在）。非社交情境实验表明，即使在没有其他感官输入的情况下，阿氏魮脂鲤的雄性对雄性和雌性化学信号都会做出反应。一般来说，脂鲤科鱼类，特别是阿氏魮脂鲤的高嗅觉敏感性，能够促进诸如觅食和在对视觉系统有严格限制的栖息地中识别同种个体等重要功能。
