Animals with biphasic lifecycles often inhabit different visual environments across ontogeny. Many frogs and toads (Amphibia: Anura) have free-living aquatic larvae (tadpoles) that metamorphose into adults that inhabit a range of aquatic and terrestrial environments. Ecological differences influence eye size across species, but these relationships have not yet been explored across life stages in an ontogenetic allometric context. We examined eye-body size scaling in a species with aquatic larvae and terrestrial adults, the common frog Rana temporaria, using a well-sampled developmental series. We found a shift in ontogenetic allometric trajectory near metamorphosis indicating prioritized growth in tadpole eyes. To explore the effects of different tadpole and adult ecologies on eye-body scaling, we expanded our taxonomic sampling to include developmental series of eleven additional anuran species. Intraspecific eye-body scaling was variable among species, with 8/12 species exhibiting a significant change in allometric slope between tadpoles and adults. Traits categorizing both tadpole ecology (microhabitat, eye position, mouth position) and adult ecology (habitat, activity pattern) across species had significant effects on allometric slopes among tadpoles, but only tadpole eye position had a significant effect among adults. Our study suggests that relative eye growth in the preliminary stages of biphasic anuran ontogenies is somewhat decoupled and may be shaped by both immediate ecological need (i.e. tadpole visual requirements) and what will be advantageous during later adult stages.

具有双相生命周期的动物通常在个体发育过程中居住在不同的视觉环境中。许多青蛙和蟾蜍（两栖动物：阿努拉）具有自由生存的水生幼虫（ta），它们逐渐变成可以生活在各种水生和陆地环境中的成虫。生态差异会影响物种间的眼睛大小，但尚未在个体发育的异形体背景下探索整个生命阶段的这些关系。我们研究了水生幼虫和陆生成虫（常见的蛙蛙蛙）的眼体大小缩放，使用了经过充分采样的开发系列。我们发现变态附近的个体发育异体轨迹发生变化，表明t眼中的优先生长。为了探索不同的t和成虫生态系统对眼部结垢的影响，我们扩展了分类学抽样方法，以包括11种其他无色物种的发育系列。种内眼内结垢的比例在物种之间是可变的，其中8/12种在t和成年动物的异体斜率上表现出显着变化。跨物种对t生态（微栖息地，眼睛位置，嘴巴位置）和成年生态（栖息地，活动模式）进行分类的性状对t之间的异形斜率有显着影响，但只有adults眼位置在成年中具有显着影响。