摘要
系统地总结了 1981～ 2 0 0 0年朱筑巢、产卵、孵化和育雏的情况 ,对朱的繁殖情况进行了全面的评价。在此期间 ,朱野生群体共计营巢 12 3窝 ,产卵 3 63枚 ,出壳 2 76只 ,离巢出飞幼鸟 2 16只。朱的平均窝卵数为 3 0 4枚 ,窝卵数在年际间无显著差异 ,孵化期为 2 8天 ,育雏期为 4 0～ 4 5天。在孵化过程中朱的每日晾卵次数和时间逐渐增加 ,在育幼过程中亲鸟的喂食量在育雏中期最多 ,雌雄亲鸟对后代的贡献没有显著差异。近年来朱营巢地的海拔高度逐渐降低。
We summarized the observation on nest building, egg laying, hatching, and breeding of Crested ibis (Nipponia nippon) during 1981～2000. During this period, the wild ibis population had born 123 broods and laid 363 eggs, of which 276 eggs were hatched, and 216 nestlings survived to fly away from their nests. The average clutch size is 3 04. Hatching stage lasts 28 days and breeding stage lasts 40～45 days. During hatching stage, the duration and frequency of cooling eggs increased as the incubation progressed. During breeding stage, the parents of Crested ibis provided more food at the middle stage of the incubation. In recent years, Crested ibis preferred to build nest at site of lower elevation.
出处
《动物学报》
SCIE
CAS
CSCD
北大核心
2001年第5期508-511,共4页
ACTA ZOOLOGICA SINICA
关键词
朱Xuan
营巢
产卵
孵化
育雏
幼鸟成活率
Crested ibis (Nipponia nippon) , Nest building, Egg laying, Hatching, Breeding
