Borisov Sergey N, Iakovlev Ivan K, Borisov Alexey S, Ganin Mikhail Yu, Tiunov Alexei V
Institute of Systematics and Ecology of Animals, Siberian Branch of the Russian Academy of Sciences, Frunze str., 11, 630091 Novosibirsk, Russia.
All-Russian Research Institute of Brewing, Non-Alcoholic and Wine Industry-A branch of the Gorbatov's Federal Scientific Center for Food Systems of Russian Academy of Sciences, Rossolimo str., 7, 119021 Moscow, Russia.
Insects. 2020 Dec 17;11(12):890. doi: 10.3390/insects11120890.
In Middle Asia, the dragonfly makes regular seasonal migrations. In spring, sexually mature dragonflies (immigrants) arrive in this region for reproduction. Dragonflies of the aboriginal generation (residents) develop in about two months, and migrate south in autumn. Residents of Middle Asia have significantly lower δH values (-123.5 (SD 17.2)‱, n = 53) than immigrants (-64.4 (9.7)‱, n = 12), as well as aboriginal dragonfly species from Ethiopia (-47.9 (10.8)‱, n = 4) and the Sahel zone (-50.1 (15.5)‱, n = 11). Phenological data on in the Afro-Asian region and a comparison with published isotopic data on migratory insects from this region suggest that (i) the probable area of origin of immigrants is located in tropical parts of East Africa and/or the Arabian Peninsula and (ii) the autumn migration of Middle Asian residents to the south may also pass through the Indian Ocean. We assume that in the Afro-Asian region, there is an extensive migration circle of covering East Africa, Central Asia and the Indian subcontinent with a total length of more than 14,000 km.
在中亚地区，蜻蜓有规律地进行季节性迁徙。春天，性成熟的蜻蜓（移民者）抵达该地区进行繁殖。本地一代的蜻蜓（居民）大约两个月发育成熟，并在秋季向南迁徙。中亚地区的“居民”蜻蜓的δH值（-123.5（标准差17.2）‰，n = 53）显著低于“移民者”蜻蜓（-64.4（9.7）‰，n = 12），也低于来自埃塞俄比亚（-47.9（10.8）‰，n = 4）和萨赫勒地区（-50.1（15.5）‰，n = 11）的本地蜻蜓物种。亚非地区的物候数据以及与该地区已发表的迁徙昆虫同位素数据的比较表明：（i）“移民者”蜻蜓可能的起源地位于东非的热带地区和/或阿拉伯半岛；（ii）中亚地区“居民”蜻蜓秋季向南的迁徙可能也会经过印度洋。我们推测，在亚非地区，存在一个广泛的蜻蜓迁徙圈，覆盖东非、中亚和印度次大陆，总长度超过14,000公里。
