Sex-specific, inverted rhythms of breeding-site attendance in an Arctic seabird
Sex-specific, inverted rhythms of breeding-site attendance in an Arctic seabird
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DOI：
10.1098/rsbl.2016.0289
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发表时间：
2016-09-01
期刊：
影响因子：
3.3
通讯作者：
Merkel, Flemming R.
中科院分区：
文献类型：
--
作者：
Huffeldt, Nicholas Per;Merkel, Flemming R.
与地球物理光暗周期中常见的日节律相反，极地纬度的生物体在连续的太阳光或黑暗（分别为极地白天和黑夜）的自然时期表现出许多昼夜活动模式，从24小时节律到昼夜活动。在北极格陵兰岛（73.7度N，56.6度W）在极地的一天，我们观察到繁殖现场出席节奏的厚嘴海鲈（Uria lomvia; n = 21对），charadriiform海鸟，这提供双亲照顾在殖民地。我们发现，U。Lomvia蛋孵化和小鸡育雏的参与是有节奏的，并且与地球物理日同步（平均周期长度[节奏持续时间] +/-95%置信区间= 24.13 +/-0.52小时）。个别对成员的时间隔离，性别特异性的殖民地出席节奏是相反的（倒置）彼此，这些性别特异性的节奏是突出的人口水平。我们的研究结果提供了调查昼夜节律系统在极地纬度和性别特异性的父母照顾策略的基础。
In contrast to daily rhythms that are common in the presence of the geophysical light dark cycle, organisms at polar latitudes exhibit many diel activity patterns during natural periods of continuous solar light or darkness (polar day and night, respectively), from 24 h rhythms to arrhythmicity. In Arctic Greenland (73.7 degrees N, 56.6 degrees W) during polar day, we observed breeding-site attendance rhythms of thick billed murres (Uria lomvia; n = 21 pairs), a charadriiform seabird, which provide biparental care at the colony. We found that U. lomvia egg-incubation and chick-brooding attendance is rhythmic and synchronized to the geophysical day (mean period length [rhythm duration] +/- 95% confidence interval = 24.13 +/- 0.52 h). Individual pair members had temporally segregated, sex-specific colony-attendance rhythms that were opposite (inverted) to each other, and these sex-specific rhythms were prominent at the population level. Our results provide a basis for investigating circadian systems at polar latitudes and sex-specific parental-care strategies.