Abstract:
In ectothermic vertebrates, behavioral fever, where an individual actively seeks warmer areas, seems to be a primary response to pathogens. This is considered a broad and evolutionarily conserved response among vertebrates. Recent population declines in amphibians are associated with an increase of infectious disease driven largely by climate change, habitat degradation, and pollution. Immediate action through research is required to better understand and inform conservation efforts. The literature available, does not provide unifying concepts that can guide adequate experimental protocols and interpretation of data, especially when studying animals in the field. The aim of this review is to promote common understanding of terminology and facilitating improved comprehension and application of key concepts about the occurrence of both sickness behavior or behavioral fever in ectothermic vertebrates. We start with a conceptual synthesis of sickness behavior and behavioral fever, with examples in different taxa. Through this discussion we present possible paths to standardize terminology, starting from original use in endothermic tetrapods which was expanded to ectothermic vertebrates, particularly amphibians and reptiles. This conceptual expansion from humans (endothermic vertebrates) and then to ectothermic counterparts, gravitates around the concept of \'normality\'. Thus, following this discussion, we highlight caveats with experimental protocols and state the need of a reference value considered normal (RVCN), which is different from experimental control and make recommendations regarding experimental procedures and stress the value of detailed documentation of behavioral responses. We also propose some future directions that could enhance interaction among disciplines, emphasizing relationships at different levels of biological organization. This is crucial given the increasing convergence of fields such as thermal physiology, immunology, and animal behavior due to emerging diseases and other global crises impacting biodiversity.
摘要:
在放热脊椎动物中,行为发热,个人积极寻找温暖的地区,似乎是对病原体的主要反应。这被认为是脊椎动物之间广泛且进化上保守的反应。最近两栖动物的数量下降与主要由气候变化驱动的传染病增加有关,栖息地退化,和污染。需要通过研究立即采取行动,以更好地了解和告知保护工作。现有文献,没有提供统一的概念来指导适当的实验方案和数据解释,尤其是在野外研究动物时。这篇综述的目的是促进对术语的共同理解,并促进对有关放热脊椎动物的疾病行为或行为热发生的关键概念的理解和应用。我们从疾病行为和行为发烧的概念综合开始,不同分类单元的例子。通过这次讨论,我们提出了标准化术语的可能途径,从最初在吸热四足动物中使用,然后扩展到放热脊椎动物,尤其是两栖动物和爬行动物。这种从人类(吸热脊椎动物)到放热对应物的概念扩展,围绕着“常态”的概念。因此,在此讨论之后,我们强调了实验方案的警告,并说明需要一个被认为是正常的参考值(RVCN),这与实验控制不同,并就实验程序提出建议,并强调行为反应的详细记录的价值。我们还提出了一些未来的方向,可以加强学科之间的互动,强调生物组织不同层次的关系。考虑到热生理学等领域的日益趋同,这一点至关重要。免疫学,和动物行为由于新出现的疾病和其他影响生物多样性的全球危机。