Fire salamander larvae show habitat type-specific surface chemical fingerprints

IF 1.4 3区环境科学与生态学 Q4 BIOCHEMISTRY & MOLECULAR BIOLOGY

Chemoecology Pub Date : 2025-11-03 DOI:10.1007/s00049-025-00430-z

Laura Schulte, Jeanne Friedrichs, Caroline Müller, Barbara A. Caspers

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Abstract

In a fire salamander population near Bonn, Germany, fire salamander females use two different habitats for larval deposition, i.e. ponds or streams. As it is known that females can discriminate between sexes and habitat types of the males based on chemical cues, we asked whether larvae show habitat specific differences in their surface chemical fingerprints. We took water samples and captured larvae at two ponds and two streams; we used polydimethylsiloxane and TD-GC-MS to collect and analyze samples of the environmental background (i.e. features that were found in the water) as well as from the surface of the larvae. We found a significantly different composition of chemical features in the environmental background samples. Additionally, we found the larvae to carry habitat type-specific chemical features. These finding allow to speculate that the features on the larval surface, if retained across metamorphosis, may be used for assortative mating in the adults, which should be further investigated.

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火蝾螈幼虫表现出特定栖息地类型的表面化学指纹

在德国波恩附近的火蝾螈种群中，雌性火蝾螈使用两种不同的栖息地进行幼虫沉积，即池塘或溪流。众所周知，雌性可以根据化学线索区分雄性的性别和栖息地类型，我们想知道幼虫的表面化学指纹是否存在栖息地特异性差异。我们在两个池塘和两条溪流采集了水样并捕获了幼虫；我们使用聚二甲基硅氧烷和TD-GC-MS收集和分析了环境背景（即在水中发现的特征）以及幼虫表面的样本。我们在环境背景样品中发现了明显不同的化学特征组成。此外，我们还发现幼虫具有特定栖息地类型的化学特征。这些发现可以推测，幼虫表面的特征，如果在整个变态过程中保留下来，可能用于成虫的分类交配，这应该进一步研究。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemoecology 环境科学-生化与分子生物学

CiteScore

4.20

自引率

0.00%

发文量

审稿时长

>36 weeks

期刊介绍： It is the aim of Chemoecology to promote and stimulate basic science in the field of chemical ecology by publishing research papers that integrate evolution and/or ecology and chemistry in an attempt to increase our understanding of the biological significance of natural products. Its scopes cover the evolutionary biology, mechanisms and chemistry of biotic interactions and the evolution and synthesis of the underlying natural products. Manuscripts on the evolution and ecology of trophic relationships, intra- and interspecific communication, competition, and other kinds of chemical communication in all types of organismic interactions will be considered suitable for publication. Ecological studies of trophic interactions will be considered also if they are based on the information of the transmission of natural products (e.g. fatty acids) through the food-chain. Chemoecology further publishes papers that relate to the evolution and ecology of interactions mediated by non-volatile compounds (e.g. adhesive secretions). Mechanistic approaches may include the identification, biosynthesis and metabolism of substances that carry information and the elucidation of receptor- and transduction systems using physiological, biochemical and molecular techniques. Papers describing the structure and functional morphology of organs involved in chemical communication will also be considered.