Sleptsov Yuri, Ktitorov Pavel, Round Philip D, Heim Wieland
Institute of Biological Problems of the North Magadan Russia.
Department of Biology, Faculty of Science Mahidol University Bangkok Thailand.
Ecol Evol. 2023 Mar 23;13(3):e9932. doi: 10.1002/ece3.9932. eCollection 2023 Mar.
Migration strategies are genetically inherited in most songbirds, and closely related species can exhibit markedly contrasting migration programs. Here, we investigate the autumn migration of one grasshopper-warbler from a population near Magadan, North East Russia, based on light-level geolocation. Although often considered to belong to Middendorff's Grasshopper-warbler , recent genetic studies suggest that birds from this population are more closely related to Pallas's Grasshopper-warbler . We compare the migratory behavior of the Magadan bird with two Pallas's Grasshopper-warblers tracked from populations in the Kolyma River valley and the Amur region, Russia. We found similar migration patterns in all three tracked individuals, with stopover sites in eastern China and wintering sites in mainland Southeast Asia, within the known range for Pallas's Grasshopper-warbler. Furthermore, based on morphological data compiled during bird ringing, we were able to confirm the presence of potential "Magadan grasshopper-warblers" during spring and autumn migration in Thailand. Our scant data provide further evidence that Magadan , notwithstanding their morphological resemblance to Middendorff's Grasshopper-warbler, constitute a population of Pallas's Grasshopper-warbler.
大多数鸣禽的迁徙策略是通过基因遗传的，亲缘关系相近的物种可能表现出截然不同的迁徙模式。在此，我们基于光定位技术，对一只来自俄罗斯东北部马加丹附近种群的草绿篱莺的秋季迁徙进行了研究。尽管该种群的鸟类常被认为属于远东树莺，但最近的基因研究表明，它们与远东树莺的亲缘关系更近。我们将马加丹鸟的迁徙行为与从俄罗斯科雷马河流域和阿穆尔地区种群追踪到的两只远东树莺进行了比较。我们发现，所有三只被追踪个体的迁徙模式相似，在中国东部有中途停歇地，在东南亚大陆有越冬地，均在远东树莺已知的分布范围内。此外，根据环志过程中收集的形态学数据，我们能够证实泰国在春秋季迁徙期间存在潜在的“马加丹草绿篱莺”。我们有限的数据进一步证明，尽管马加丹鸟在形态上与远东树莺相似，但它们属于远东树莺的一个种群。
