摘要
2006年5—7月,在四川南充市郊区对白鹭雏鸟的生长发育进行观察和测量,并运用Logistic生长曲线模型对雏鸟体质量、体长、喙峰长、喙裂长、翅长、跗蹠、初级和次级飞羽、尾长和中趾进行数学拟合,获得相关的生长参数.其拟合度(R2)都达到0.95以上,说明Logistic生长曲线模型能很好地模拟白鹭雏鸟的生长发育.其结果还显示白鹭雏鸟外部器官的中趾、跗蹠和喙裂长的发育早于翅长、尾长、初级和次级飞羽,这主要是窝内雏鸟为了争夺食物,频繁使用这些器官的结果.
In May—July 2006,the growth and development of nestling little egret（Egretta garzetta） was observed and measured at outskirts of Nanchong city,Sichuan.Also,logistic growth curves was used to mathematically fit on nestling weight,body length,bill length,rictus length,wing length,tarsus,primary and secondary flight feathers,tail length and middle toe,and obtained related growth parameters.All degrees of fitting（R2） were above 0.95,which indicates that the logistic growth curve model could well interpret growth and development of the nestling little egret.In addition,the middle toe,tarsus and rictus length of nestling little egret were earlier development than wing length,tail length,primary and secondary flight feathers,which resulted from nestlings frequently used these organs for food.
出处
《信阳师范学院学报（自然科学版）》
CAS
北大核心
2013年第1期80-84,共5页
Journal of Xinyang Normal University(Natural Science Edition)
基金
四川省重点学科重点资助项目(SZD0420)
