Morphometric versus genetic variation in the Eurasian Reed Warbler Acrocephalus scirpaceus in Italy

IF 0.7 4区生物学 Q3 ORNITHOLOGY

Bird Study Pub Date : 2023-07-03 DOI:10.1080/00063657.2023.2228537

R. Ientile, M. Tagliavia, Natalino Cuti, R. Termine, C. Giannella, S. Nissardi, C. Zucca, V. Cavaliere, G. Verde, D. Campobello, B. Massa

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引用次数: 0

Abstract

ABSTRACT Capsule The Eurasian Reed Warbler Acrocephalus scirpaceus from breeding sites in Italy has little genetic variability in the mitochondrial cytochrome b gene but shows morphological variation suggesting isolation of some populations. Aims To investigate the morphometric and genetic trait variation of Eurasian Reed Warbler populations at a large temporal and spatial scale. Methods We analysed morphometric traits and the mitochondrial cytochrome b (cyt b) gene of samples collected over 25 years, from populations at seven sites across the Italian peninsula and islands. Results While we found no genetic differences, we detected significantly smaller body sizes in individuals breeding in Sicily and Sardinia compared to those from mainland Italy. There were also significant body size differences between two Sicilian populations: one larger breeding on the southern coast and the other smaller at an inner highland site. Conclusion The morphometric data, together with the site fidelity of individuals, are consistent with there being isolation of some populations. Specifically, our results are consistent with an example of polyphenism, morphological plasticity, in the populations of the main Italian islands, Sicily and Sardinia.

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意大利欧亚芦莺的形态与遗传变异

摘要:来自意大利孳生地的欧亚芦莺(Acrocephalus scirpaceus)线粒体细胞色素b基因遗传变异不大，但存在形态变异，提示部分种群存在分离。目的在大时空尺度上研究欧亚苇莺种群的形态计量学和遗传性状变异。方法分析了25年来在意大利半岛和岛屿的7个地点收集的样本的形态特征和线粒体细胞色素b (cyt b)基因。结果虽然我们没有发现遗传差异，但我们发现在西西里岛和撒丁岛繁殖的个体与来自意大利大陆的个体相比，体型明显较小。西西里的两个种群之间也存在着显著的体型差异:一个较大的种群生活在南部海岸，另一个较小的种群生活在内陆高地。结论形态计量学数据和个体的位点保真度与部分种群存在分离一致。具体来说，我们的结果与意大利主要岛屿西西里岛和撒丁岛人口的多表型，形态可塑性的例子是一致的。

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

Bird Study 生物-鸟类学

CiteScore

1.60

自引率

0.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Bird Study publishes high quality papers relevant to the sphere of interest of the British Trust for Ornithology: broadly defined as field ornithology; especially when related to evidence-based bird conservation. Papers are especially welcome on: patterns of distribution and abundance, movements, habitat preferences, developing field census methods, ringing and other techniques for marking and tracking birds. Bird Study concentrates on birds that occur in the Western Palearctic. This includes research on their biology outside of the Western Palearctic, for example on wintering grounds in Africa. Bird Study also welcomes papers from any part of the world if they are of general interest to the broad areas of investigation outlined above. Bird Study publishes the following types of articles: -Original research papers of any length -Short original research papers (less than 2500 words in length) -Scientific reviews -Forum articles covering general ornithological issues, including non-scientific ones -Short feedback articles that make scientific criticisms of papers published recently in the Journal.