Differential effect of natural and pigment‐supplemented diets on larval development and phenotype of anurans,Journal of Zoology

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Differential effect of natural and pigment‐supplemented diets on larval development and phenotype of anurans
Journal of Zoology ( IF 1.9 ) Pub Date : 2020-09-01 , DOI: 10.1111/jzo.12827
E. Cabrera‐Guzmán _{1,

2} , C. Díaz‐Paniagua ₁ , I. Gomez‐Mestre ₁

Affiliation

Diet has major effects on development, growth, health, and performance of animals. Photosynthetic pigments, in particular, are key components of the diet of many organisms that can play important roles in their development and performance. Compared to other taxa, we know relatively little about how these pigments impact amphibian larval development. We conducted diet supplementation experiments on tadpoles of two amphibian species, in which we offered various naturally co‐occurring aquatic macrophytes or diet enriched or not with supplement pigments. We evaluated the effect of these diets on developmental period, size, mass, color, and jumping performance of metamorphs exposed or not to risk of simulated pond drying during the larval period. Diet based on Myriophyllum alterniflorum resulted in high mortality rates of Mediterranean tree frog larvae (Hyla meridionalis), this macrophyte did not affect survival of Western spadefoot toads (Pelobates cultripes), but individuals took longer to reach metamorphosis. Regardless of the macrophyte consumed, spadefoot toad tadpoles speeded up metamorphosis when exposed to reduced water volume, whereas tree frog tadpoles did not show significant responses to simulated pond drying. The three supplemented diets tested—β‐carotene, lutein, and chlorophyll—had positive effects on size and mass of tree frogs; supplemented diet based on β‐carotene improved dorsal coloration of tree frogs and had positive effects on size and mass at metamorphosis of spadefoot toads. Tadpoles fed with supplements did not exhibit significant response to water reduction. Our study highlights the importance of larval diet on phenotypically plastic responses and post‐metamorphic traits in anurans.

中文翻译：

天然和色素补充饮食对幼虫发育和无核表型的差异作用

饮食对动物的发育，生长，健康和性能有重大影响。特别是，光合色素是许多生物饮食中的关键成分，它们可在其发育和性能中发挥重要作用。与其他类群相比，我们对这些色素如何影响两栖类幼体发育的了解相对较少。我们在两种两栖动物的t上进行了饮食补充实验，其中提供了各种天然共生的水生植物或富含或不富含补充色素的饮食。我们评估了这些饮食对幼虫期暴露于模拟池塘干燥风险或未暴露于模拟池塘干燥风险的变质的发育时期，大小，质量，颜色和跳跃性能的影响。基于互花米草的饮食导致地中海雨蛙幼虫（Hyla meridionalis）的高死亡率，这种大型植物并没有影响西方赤脚蟾蜍（Pelobates cultripes）的生存。），但个人需要更长的时间才能达到变态。不管食用哪种大型植物，赤脚蟾蜍exposed暴露于减少的水量后都会加快变态，而树蛙t却对模拟的池塘干燥没有明显反应。测试的三种补充饮食-β-胡萝卜素，叶黄素和叶绿素-对树蛙的大小和质量有积极的影响。基于β-胡萝卜素的补充饮食改善了树蛙的背色，并对赤脚蟾蜍变态的大小和质量产生了积极影响。喂食supplement的did对减水没有明显反应。我们的研究强调了幼虫饮食对无脊椎动物表型塑性反应和后变态性状的重要性。

更新日期：2020-09-01

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