VARIATION IN THE SONG RATE OF THE MALE PIED FLYCATCHER FICEDULA-HYPOLEUCA - CAUSES AND CONSEQUENCES
VARIATION IN THE SONG RATE OF THE MALE PIED FLYCATCHER FICEDULA-HYPOLEUCA - CAUSES AND CONSEQUENCES
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DOI：
10.1016/s0003-3472(87)80160-4
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发表时间：
1987-08-01
期刊：
影响因子：
2.5
通讯作者：
GOTTLANDER, K
中科院分区：
文献类型：
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作者：
GOTTLANDER, K
斑姬鹟的自然鸣叫率与气温、季节和季节高度相关。不同温度下的平均鸣叫率随着季节的推进而上升。当温度、时间和日期保持不变时，雄蝶在交配前鸣叫率略有提高。平均鸣声频率与雄性的年龄、跗骨长度（体型）或颜色类型无关。与对照组相比，提供额外食物的雄性在低温下显著提高了鸣叫率，这表明鸣叫率受到食物资源的限制。在自然情况下，雌性选择在该地区生活时间最长的雄性和鸣声率最高的雄性，即使在对鸣声率随交配期持续时间的增加进行校正后也是如此。这表明，雌性在选择鸣叫率高的雄性时，实际上可能直接选择其领地的食物含量和/或雄性的质量。另外，雌性的配偶选择可能是基于领地的线索，而鸣叫率和/或雄性的质量可能仅仅与领地质量相关。
The natural song rate of the pied flycathcher, Ficedula hypoleuca, was highly correlated with both air temperature and time of day as well as with date of season. The average song rate at different temperature levels rose as the season advanced. When temperature, time of day and date were held constant, males were found to slightly increase the song rate during the premating period. The average song rate did not correlate with age, tarsus length (body size) or colour type of the male. Males provided with extra food considerably elevated their song rates at low temperatures in relation to controls which indicates that song rate is limited by food resources. Under natural circumstances, females selected males that had been the longest in the area and also males with the highest song rates, even after the correction for augmented song rate with duration of premating period. It is suggested that the female, in selecting a male with a high song rate, in fact may select either the food content of his territory and/or the quality of the male directly. Alternatively, female mate choice may be based on territorial cues, and song rate and/or male quality may merely be correlatives of territory quality.