首页|Dunlin subspecies exhibit regional segregation and high site fidelity along the East Asian-Australasian Flyway

Dunlin subspecies exhibit regional segregation and high site fidelity along the East Asian-Australasian Flyway

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  • NSTL
  • Oxford Univ Press
The degree to which individuals migrate among particular breeding, migration, and wintering sites can have important implications for prioritizing conservation efforts. Four subspecies of Dunlin (Calidris alpina) migrate along the East Asian-Australasian Flyway. Each subspecies has a distinct and well-defined breeding range, but their migration and winter ranges are poorly defined or unknown. We assessed the migratory connectivity of 3 of these subspecies by evaluating a dataset that encompasses 57 yr (1960-2017), and comprises more than 28,000 Dunlin banding records and 818 observations (71 recaptures and 747 band resightings). We present some of the first evidence that subspecific segregation likely occurs, with arcticola Dunlin wintering in areas of Japan, and other arcticola, actites, and sakhalina Dunlin wintering in areas of the Yellow and China seas. Observations indicate that whether an arcticola Dunlin winters in Japan or the Yellow and China seas is independent of their breeding location, sex, or age. Furthermore, observations indicate that 83% of arcticola Dunlin exhibit interannual site fidelity to specific wintering sites. This suggests that the degradation of specific wetland areas may negatively affect particular individuals of a particular subspecies (or combination of subspecies), and, if widespread, could result in population declines. Given the possible biases inherent in analyzing band recovery data, we recommend additional flyway-wide collaboration and the use of lightweight tracking devices and morphological and genetic assignment techniques to better quantify subspecies' migratory movements and nonbreeding distributions. This information, when combined, will enable effective conservation efforts for this species across the East Asian-Australasian Flyway.

Calidris alpinaflyway conservationmigration ecologymigratory connectivity

Lagasse, Benjamin J.、Lanctot, Richard B.、Barter, Mark、Brown, Stephen、Chiang, Chung-Yu、Choi, Chi-Yeung、Gerasimov, Yuri N.、Kendall, Steve、Liebezeit, Joseph R.、Maslovsky, Konstantin S.、Matsyna, Alexander, I、Matsyna, Ekaterina L.、Payer, David C.、Saalfeld, Sarah T.、Shigeta, Yoshimitsu、Tiunov, Ivan M.、Tomkovich, Pavel S.、Valchuk, Olga P.、Wunder, Michael B.

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Univ Colorado, Dept Integrat Biol, Denver, CO 80202 USA

US Fish & Wildlife Serv, Migratory Bird Management, Anchorage, AK USA

Wetlands Int Oceania, Glen Waverley, Vic, Australia

Manomet Inc, Saxtons River, VT USA

Tunghai Univ, Dept Life Sci, Taichung, Taiwan

Southern Univ Sci & Technol, Coll Engn, Sch Environm Sci & Engn, Shenzhen, Peoples R China

Russian Acad Sci, Far Eastern Branch, Pacific Geog Inst, Kamchatka Branch, Petropavlovsk Kamchatski, Russia

US Fish & Wildlife Serv, Arctic Natl Wildlife Refuge, Fairbanks, AK USA

Wildlife Conservat Soc, Portland, OR USA

Russian Acad Sci, Fed Sci Ctr East Asia Terr Biodivers, Far Eastern Branch, Vladivostok, Russia

Working Grp Waders Northern Eurasia, Nizhnii Novgorod, Russia

Yamashina Inst Ornithol, Div Avian Conservat, Abiko, Chiba, Japan

Lomonosov Moscow State Univ, Zool Museum, Moscow, Russia

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2020

10.1093/condor/duaa054

The condor

The condor

ISSN：0010-5422
年,卷(期)：2020.122(4)
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