Phylogeny, body morphology, and trophic level shape intestinal traits in coral reef fishes.
Phylogeny, body morphology, and trophic level shape intestinal traits in coral reef fishes.
复制标题
珊瑚礁鱼类中的系统发育，身体形态和营养水平的肠道特征。
DOI：
10.1002/ece3.8045
复制
发表时间：
2021-10
影响因子：
2.6
通讯作者：
Parravicini V
中科院分区：
文献类型：
--
作者：
Ghilardi M;Schiettekatte NMD;Casey JM;Brandl SJ;Degregori S;Mercière A;Morat F;Letourneur Y;Bejarano S;Parravicini V
基于特征的方法越来越多地用于研究物种组合和理解生态系统功能。这些方法的优势在于适当选择与感兴趣的功能相关的功能特征。然而，特质-功能关系往往得到弱经验证据的支持。与消化和营养同化相关的过程尤其难以整合到基于性状的方法中。在鱼类中，肠道长度通常用于描述这些功能。虽然有广泛的共识，关于鱼的肠道长度和饮食之间的关系，进化和环境的力量已经形成了多样性的肠道形态，这是不是单独捕获的长度。我们以珊瑚礁鱼类为研究对象，探讨演化历史与生态如何塑造肠道形态。使用一个大的数据集，包括142个物种，在法属波利尼西亚收集的31个家庭，我们测试如何发育，身体形态，饮食与三个肠道形态特征：肠长度，直径和表面积。我们表明，繁殖，身体形态，营养水平解释了大部分的种间变异鱼肠道形态。尽管高度的系统发育保守性，分类无关的草食性鱼类表现出相似的肠道形态，由于适应性趋同进化。此外，我们表明，无胃，食硬物的物种有最宽的肠道，以弥补缺乏胃，并允许通过相对较大的未消化的食物颗粒。而不是传统上应用的肠长度的度量，肠表面积可能是最合适的性状，以表征肠道形态的功能研究。肠道形态是将消化和同化过程整合到基于性状的方法中的关键。然而，在鱼类中，通常仅使用肠长度来实现这一目的。我们的研究表明，进化和生态学已经形成了巨大的多样性的肠道形态的珊瑚礁鱼类，不能单独捕获的长度。我们发现，肠道性状是鱼类营养作用的明确指标，肠道表面积可能是一个最合适的性状，应用于功能研究比肠道长度。
Trait‐based approaches are increasingly used to study species assemblages and understand ecosystem functioning. The strength of these approaches lies in the appropriate choice of functional traits that relate to the functions of interest. However, trait–function relationships are often supported by weak empirical evidence. Processes related to digestion and nutrient assimilation are particularly challenging to integrate into trait‐based approaches. In fishes, intestinal length is commonly used to describe these functions. Although there is broad consensus concerning the relationship between fish intestinal length and diet, evolutionary and environmental forces have shaped a diversity of intestinal morphologies that is not captured by length alone. Focusing on coral reef fishes, we investigate how evolutionary history and ecology shape intestinal morphology. Using a large dataset encompassing 142 species across 31 families collected in French Polynesia, we test how phylogeny, body morphology, and diet relate to three intestinal morphological traits: intestinal length, diameter, and surface area. We demonstrate that phylogeny, body morphology, and trophic level explain most of the interspecific variability in fish intestinal morphology. Despite the high degree of phylogenetic conservatism, taxonomically unrelated herbivorous fishes exhibit similar intestinal morphology due to adaptive convergent evolution. Furthermore, we show that stomachless, durophagous species have the widest intestines to compensate for the lack of a stomach and allow passage of relatively large undigested food particles. Rather than traditionally applied metrics of intestinal length, intestinal surface area may be the most appropriate trait to characterize intestinal morphology in functional studies. Intestinal morphology is key to integrating digestive and assimilative processes into trait‐based approaches. Yet intestinal length alone has been commonly use for this purpose in fishes. Our study demonstrates that evolution and ecology have shaped a great diversity of intestinal morphologies in coral reef fishes that cannot be captured by length alone. We show that intestinal traits are clear indicators of fish trophic roles and intestinal surface area may be a most suitable trait to apply in functional studies than intestinal length.
登录
查看更多内容
影响因子：
3.7
作者：
Claverie T;Wainwright PC
通讯作者：
Wainwright PC
影响因子：
3.5
作者：
Berumen, M. L.;Pratchett, M. S.;Goodman, B. A.
通讯作者：
Goodman, B. A.
影响因子：
2.5
作者：
Crossman, DJ;Choat, JH;Clements, KD
通讯作者：
Clements, KD
影响因子：
1.8
作者：
Dala-Corte, Renato Bolson;Becker, Fernando Gertum;Melo, Adriano Sanches
通讯作者：
Melo, Adriano Sanches
影响因子：
3.3
作者：
Burns, Michael D.
通讯作者：
Burns, Michael D.