Regnet Ruth Anastasia, Rech Inna, Rödder Dennis, Solé Mirco
LIB, Museum Koenig, Leibniz Institute for the Analysis of Biodiversity Change, Adenauerallee 127, D-53113 Bonn, Germany Museum Koenig Bonn Germany.
Programa de Pós Graduação em Zoologia, Universidade Estadual de Santa Cruz, Rodovia Jorge Amado, Km 16, 45662-900 Salobrinho, Ilhéus, Bahia, Brazil Universidade Estadual de Santa Cruz Ilhéus Brazil.
Zookeys. 2023 Jul 26;1172:131-153. doi: 10.3897/zookeys.1172.98603. eCollection 2023.
A solid basis to address the conservation challenges of amphibians requires an increased knowledge on their natural history and biology. Recent data on reproductive modes in amphibians suggest that they are much more complex and variable than previously thought but understudied. However, detailed information on the reproductive history is especially important to fill the current knowledge gaps. Following recent taxonomic changes in , information about captive-breeding management, image-based measurements of total length and surface area of the silhouette for individuals from embryonic to metamorphic development, and detailed larval staging for captive-bred specimens are provided from French Guiana. The development of from the stage eight (Gosner 1960) through metamorphosis took 79 to 91 days ( = 6) with a survival rate of 46%. The developmental stages largely matched those of the generalized staging system of Gosner (1960), with differences in the stages when labia and teeth differentiation and atrophy of the oral apparatus occurred. Compared with other studies the total length of tadpoles was greater at given stages than those of from a Peruvian population and those of the sister species, . Other studies concerning growth curves based on surface area data revealed that tadpoles at peak size were larger than those of , , , , and , but smaller than . Our results represent the first embryonic and larval staging for , and detailed information is provided on their initial life phases. These data may facilitate the identification of tadpoles in the wild, as well helping to clarify the biogeographical distribution and taxonomic arrangement of the species. In addition, knowledge is added to the captive-breeding methodology for the species.
应对两栖动物保护挑战的坚实基础需要更多地了解它们的自然史和生物学特性。最近关于两栖动物繁殖模式的数据表明，它们比以前认为的要复杂和多变得多，但研究不足。然而，关于繁殖史的详细信息对于填补当前的知识空白尤为重要。随着最近的分类学变化，法属圭亚那提供了关于圈养繁殖管理、从胚胎发育到变态发育阶段个体轮廓的全长和表面积的图像测量，以及圈养繁殖标本的详细幼体分期信息。从第八阶段（戈斯纳，1960年）到变态发育的过程耗时79至91天（n = 6），存活率为46%。发育阶段在很大程度上与戈斯纳（1960年）的通用分期系统相匹配，但在唇和齿分化以及口腔器官萎缩发生的阶段存在差异。与其他研究相比，在给定阶段，该物种蝌蚪的全长大于秘鲁种群的该物种蝌蚪以及其姐妹物种的蝌蚪。其他基于表面积数据的生长曲线研究表明，该物种蝌蚪在峰值大小时大于其他几种物种的蝌蚪，但小于另一种物种的蝌蚪。我们的结果代表了该物种的首次胚胎和幼体分期，并提供了关于其早期生命阶段的详细信息。这些数据可能有助于在野外识别该物种的蝌蚪，同时也有助于阐明该物种的生物地理分布和分类安排。此外，还增加了该物种圈养繁殖方法的相关知识。
