Eggs on a plate: Population-dependent effects of humic substance rich water on perch egg size and hatching success

IF 2.8 2区生物学 Q2 ECOLOGY

Freshwater Biology Pub Date : 2024-07-07 DOI:10.1111/fwb.14307

Kristina Noreikiene, Karl-Erik Aavik, Siim Kahar, Magnus Lauringson, Konrad Taube, Alfonso Diaz-Suarez, Riho Gross, Anti Vasemägi

引用次数: 0

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盘子里的蛋富含腐殖质的水对鲈鱼卵大小和孵化成功率的种群依赖性影响

鱼类在脆弱的生命早期阶段承受环境干扰的能力对于面临全球环境快速变化的种群和物种来说至关重要。淡水环境中溶解有机碳（DOC）浓度的上升（即褐变）是水生生物（包括远东鱼类）面临的潜在挑战之一，它会导致能见度和 pH 值下降等一系列变化。相反，腐殖质因其潜在的抗菌和免疫刺激特性而日益得到认可。问题仍然是，在发育过程中暴露于高 DOC 的腐殖质水域是否会造成重大干扰，以及遗传和亲本因素在多大程度上可以在这种可能具有挑战性的环境中保持最佳发育状态。为了解决这些问题，我们对来自清水湖泊和腐殖质湖泊的欧亚鲈鱼（Perca fluviatilis）进行了纯合和杂交（种群间杂交）。将每个杂交种的受精卵暴露于天然腐殖质湖水和清水湖水中。记录绒毛膜内腔直径（胚胎直径）和孵化成功率。即使在较小的水量（5 mL）中，鲈鱼胚胎也能成功发育，大多数胚胎在受精后 13 天孵化（70%）。胚胎直径受杂交类型和处理之间交互作用的影响，在清水和腐殖质水处理中，母体清水来源的胚胎都比腐殖质水来源的胚胎小。孵化几率与雌性个体大小无关，而是与胚胎着眼期的直径以及杂交类型和处理之间的交互作用有关，结果是纯清水杂交的胚胎孵化更早，孵化数更高。我们的研究表明，腐殖质水对鲈鱼的影响并非都是负面的，并揭示了鲈鱼在发育过程中对腐殖质水暴露的种群依赖性反应。我们的实验设计还说明了多孔板在进行复杂的高通量实验方面的实用性，超越了传统的模式物种，并为测试鲈鱼早期性状的基因型-环境关联提供了新的可能性。总之，这项研究的结果增加了越来越多的证据，表明腐殖质可能会对鱼类的早期生活产生复杂的影响，促使人们进一步研究腐殖质在塑造自然表型方面的作用以及在应用领域的潜在用途。

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来源期刊

Freshwater Biology 生物-海洋与淡水生物学

CiteScore

5.90

自引率

3.70%

发文量

162

审稿时长

2 months

期刊介绍： Freshwater Biology publishes papers on all aspects of the ecology of inland waters, including rivers and lakes, ground waters, flood plains and other freshwater wetlands. We include studies of micro-organisms, algae, macrophytes, invertebrates, fish and other vertebrates, as well as those concerning whole systems and related physical and chemical aspects of the environment, provided that they have clear biological relevance. Studies may focus at any level in the ecological hierarchy from physiological ecology and animal behaviour, through population dynamics and evolutionary genetics, to community interactions, biogeography and ecosystem functioning. They may also be at any scale: from microhabitat to landscape, and continental to global. Preference is given to research, whether meta-analytical, experimental, theoretical or descriptive, highlighting causal (ecological) mechanisms from which clearly stated hypotheses are derived. Manuscripts with an experimental or conceptual flavour are particularly welcome, as are those or which integrate laboratory and field work, and studies from less well researched areas of the world. Priority is given to submissions that are likely to interest a wide range of readers. We encourage submission of papers well grounded in ecological theory that deal with issues related to the conservation and management of inland waters. Papers interpreting fundamental research in a way that makes clear its applied, strategic or socio-economic relevance are also welcome. Review articles (FRESHWATER BIOLOGY REVIEWS) and discussion papers (OPINION) are also invited: these enable authors to publish high-quality material outside the constraints of standard research papers.