The aposematic phenotype: a geno- by phenotype perspective from poison frogs

警戒表型：毒蛙的基因型视角

• 批准号: 459443707
• 负责人: Professorin Dr. Heike Pröhl
• 金额: --
• 依托单位: Institut für Zoologie
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/459443707?language=en
• 关键词: aposematic; phenotype; geno; perspective; poison

Aposematism and crypsis are two contrasting anti-predator strategies. Aposematic animals often possess a conspicuous warning coloration to signal their predators harmful phenotypes (chemical defences, spines, etc.), while cryptic animals are camouflaged and generally non-harmful. In Neotropical poison frogs (Dendrobatidae) many species are colour polypytic, with populations showing different colour morphs which vary in conspicuousness. In the well-studied strawberry poison frog O. pumilio the more conspicuous colour morphs are more toxic, thus presenting an aposematic phenotype while more cryptic colour morphs are less toxic. In our previous studies, we found that the expression of genes involved in pigment production and structural coloration differs between colour morphs in O. pumilio. Here we extend on these findings by investigating the genomic link between coloration and toxicity in detail. We will characterize the alkaloids and pigments as well as underlying expression and genetic variation of coloration- and alkaloid-related genes in three Oophaga species. The central question of this project is whether genotype and phenotype are similarly correlated between the red and green colour morphs in the three Oophaga species thus providing evidences on whether the evolutionary trajectories of aposematic traits resulted from deterministic and predictable or idiosyncratic and unpredictable evolution. This genotype by phenotype interaction analysis of a diverse set of aposematic traits have been rarely assessed by evolutionary biologists. The expected genomic insights on the evolution of aposematism will propel similar genotype by phenotype studies in other aposematic groups and ultimately advance our understanding of aposematism evolution. The project will include extensive transfer of knowledge and capacity building between European and Latin American labs, involving scientists of different ages, sexes/gender and origins. The applied methodologies and collaboration strategies are expected to boost the scientific outputs of all participants while strengthening their human integration.

授课和CRYPSIS是两种对比的反促进策略。载体动物通常具有明显的警告颜色，以表明其捕食者有害表型（化学防御，棘突等），而隐秘的动物则是伪装的，通常无害。在新热带毒物青蛙（Dendrobatidae）中，许多物种都是颜色的杂种，种群显示出不同的颜色形态，它们的显着性各不相同。在研究良好的草莓毒蛙O. pumilio中，更明显的颜色变形更具毒性，因此呈现载体表型，而更多的隐秘颜色变体的毒性较小。在我们先前的研究中，我们发现pumilio的颜色变形之间涉及色素产生和结构色素的基因表达不同。在这里，我们通过详细研究着色与毒性之间的基因组联系来扩展这些发现。我们将表征三种Oophaga物种中色素和色素和生物碱相关基因的生物碱和色素以及潜在的表达和遗传变异。该项目的核心问题是，基因型和表型在三种Oophaga物种中的红色和绿色形态之间是否相似，因此提供了证据表明，序言性状的进化轨迹是否是由确定性和可预测性和特质性和不可避免的进化而产生的。通过进化生物学家很少评估，通过表型相互作用分析的这种基因型相互作用分析很少评估。对撇号演变的预期基因组见解将通过其他宗教组中的表型研究推动相似的基因型，并最终促进我们对晋升演化的理解。该项目将包括欧洲和拉丁美洲实验室之间的知识和能力建设的广泛转移，涉及不同年龄，性别/性别和起源的科学家。所应用的方法和协作策略有望在加强人类融合的同时提高所有参与者的科学成果。