Magnetic compass of garden warblers is not affected by oscillating magnetic fields applied to their eyes

Julia Bojarinova, Kirill Kavokin, Alexander Pakhomov, Roman Cherbunin, Anna Anashina, Maria Erokhina, Maria Ershova, Nikita Chernetsov

Результат исследований: Научные публикации в периодических изданияхстатья

1 Цитирования (Scopus)

Аннотация

The magnetic compass is an important element of the avian navigation system, which allows migratory birds to solve complex tasks of moving between distant breeding and wintering locations. The photochemical magnetoreception in the eye is believed to be the primary biophysical mechanism behind the magnetic sense of birds. It was shown previously that birds were disoriented in presence of weak oscillating magnetic fields (OMF) with frequencies in the megahertz range. The OMF effect was considered to be a fingerprint of the photochemical magnetoreception in the eye. In this work, we used miniaturized portable magnetic coils attached to the bird’s head to specifically target the compass receptor. We performed behavioural experiments on orientation of long-distance migrants, garden warblers (Sylvia borin), in round arenas. The OMF with the amplitude of about 5 nT was applied locally to the birds’ eyes. Surprisingly, the birds were not disoriented and showed the seasonally appropriate migratory direction. On the contrary, the same birds placed in a homogeneous 5 nT OMF generated by large stationary coils showed clear disorientation. On the basis of these findings, we suggest that the disruption of magnetic orientation of birds by oscillating magnetic fields is not related to photochemical magnetoreceptors in their eyes.

Язык оригиналаанглийский
Номер статьи3473
ЖурналScientific Reports
Том10
Номер выпуска1
Ранняя дата в режиме онлайн26 фев 2020
DOI
СостояниеОпубликовано - 2020

Предметные области Scopus

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Fingerprint Подробные сведения о темах исследования «Magnetic compass of garden warblers is not affected by oscillating magnetic fields applied to their eyes». Вместе они формируют уникальный семантический отпечаток (fingerprint).

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