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广东南雄青嶂山海南鳽繁殖行为研究
Study of the Breeding Behavior of Gorsachius magnificus in Qingzhang Mountains, Nanxiong County, Guangdong Province
钟平生1,张英宏1,陈志红1,黄石林2*
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作者单位:(1. 广东南雄小流坑-青嶂山省级自然保护区管理处,广东南雄512421;2. 广东省自然保护区管理办公室,广州510173)
中文关键字:海南鳽;繁殖行为;繁殖成功率
英文关键字:Gorsachius magnificus; breeding behavior; breeding success rate
中文摘要:20125~20137月,在广东南雄小流坑-青嶂山保护区对海南鳽的繁殖习性进行了观察。正常情况下海南鳽一年繁殖一次,开始于3月初,到7月中上旬结束,育雏期间受到干扰后会杀仔、弃巢,如果条件合适,时隔半个月后又进行第二次繁殖。每巢产卵1~3枚,雌雄双亲轮流孵卵,雄鸟抱孵时间约占1/3,雌鸟占2/3。孵卵期27 d,育雏期67 d,繁殖期超过3个月。幼鸟离巢后会在巢区附近逗留一段时间,但不跟随亲鸟一块栖息和外出觅食。繁殖期间海南鳽对移动光源比较敏感,恋巢性较差。繁殖期过长、抗干扰能力低、幼鸟学习能力差等因素是影响海南鳽繁殖成功率的主要原因。
英文摘要:The breeding behavior of Gorsachius magnificus was investigated from May 2012 to July 2013 at Qingzhang Mountains, Nanxiong county, Guangdong province. G. magnificus breed annually during early March to early July. However, G. magnificus would kill the young birds and abandon the nest when they were disturbed in breeding season, and they might breed again after half month only in appropriate conditions. There were usually 1~3 eggs in a nest and needing the alternate incubation of the male and female birds. The incubation time of the female birds was almost twice longer than that of male. The incubation period was 27 days, and the brood period would last for 67 days. Therefore, the whole breeding period of G. magnificus is more than 3 months. The young birds would stay shortly nearby the nest after leaving the nest, but they would not inhabit or forage with their parents. G. magnificus were sensitive to the moving light and would stay in the nest for long during breeding period. In conclusion, the long breeding period, low ability of anti-interference, poor learning ability of young birds were the main factors affecting the reproductive success of G. magnificus.
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