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Diving Behavior of scaly-sided merganser,mergus squamatus in poyang lake watershed,China
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نویسنده
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shao m. ,shi w. ,zeng b. ,jiang j.
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منبع
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pakistan journal of zoology - 2014 - دوره : 46 - شماره : 1 - صفحه:284 -287
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چکیده
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The diving behavior of scalysided mergansers (mergus squamatus) was studied in the yihuang section of the poyang lake watershed,from december 2012 to march 2013. mean dive duration was 23.6 ± 6.3 s (n = 1164) while mean time on the surface was 11.6 ± 6.6 s (n = 1164). mean dive duration and mean pause duration varied with time of day being shorter in the morning than during the rest of the day. dive efficiency,the ratio of dive duration to pause duration,during daytime hours varied from 1.9 to 2.2. surface duration was more strongly positively related to subsequent dive durations (r = 0.211,p<0.001),which may indicate that the animal uses the time spent on the surface to prepare for the next one. © copyright 2014 zoological society of pakistan.
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کلیدواژه
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Diving behavior; Diving duration; Diving pause duration; Mergus squamatus
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آدرس
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college of life science,jiangxi normal university,nanchang,jiangxi, China, college of life science,jiangxi normal university,nanchang,jiangxi, China, college of life science,jiangxi normal university,nanchang,jiangxi, China, college of life science,jiangxi normal university,nanchang,jiangxi, China
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Authors
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