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Diurnal behaviors and time budget of a female Yangtze finless porpoise during pregnancy

SHU Jiakuan,JIANG Wenhua,ZHENG Bangyou,HAN Demin,SHANG Qiliang,YU Daoping   

  1. Institute of Biodiversity and Marsh Ecol ogy,College of Life Sciences,Anhui University,Anhui Key Laboratory of Eco-engineering and Biotechnique,Hefei 230039,China
  • Online:2009-06-20 Published:2009-03-08

一只长江江豚妊娠期昼间行为及其时间分配

束家宽,蒋文华,郑邦友,韩德民,尚启亮,于道平   

  1. 安徽大学生命科学学院生物多样性与湿地生态研究所,安徽省生态工程与生物技术重点实验室,合肥 230039

Abstract: From August 25,2006 to August 15,2007 in the open water of Tongling Freshwater Porpoise National Nature
Reserve,the diurnal behavior and time budget of a pregnant Yangtze finless female porpoise (Neophocaena phocaenoides asiaeorientalis) was observed using focal-animal and continuous sampling methods. The results indicated that: 1) the female predominantly invested its time in feeding (66 0 ±1 1% ,Mean ± SE),followed by traveling (11.5 ± 0.3% ),resting (10.5 ±0.5% ),socializing (9.8 ± 1.1% ) and other (2.1 ± 0.1% ), 2) among different months,it showed significant differences for each of the above behaviors except traveling, 3) each of the five behaviors was significantly different among the 11 periods of the day,and 4)significant differences were observed for each of the five behaviors across the five zones of the water.

Key words: Behavior, Open water, Pregnancy, Time budget, Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis)

关键词: 长江江豚, 半自然水域, 妊娠期, 时间分配, 行为