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作 者:林琳[1] 王欢欢[2] 黄克坚[2] 柳劲松[2]
机构地区:[1]杭州师范大学生命与环境科学学院,杭州310036 [2]温州大学生命与环境科学学院,浙江温州325035
出 处:《四川动物》2011年第3期429-434,共6页Sichuan Journal of Zoology
基 金:国家自然科学基金资助项目(No.31070366)
摘 要:食性是影响鸟类消化系统形态结构的重要因子之一。本文对丝光椋鸟Sturnus sericeus、白头鹎Pycnonotus sinensis、小鹀Emberiza pusilla及红头长尾山雀Aegithalos concinnus4种雀形目鸟类的消化道形态结构进行了比较研究。结果发现,4种雀形目鸟类总消化道及各消化器官的长度和重量均存在显著种间差异。其中丝光椋鸟总消化道及各消化道器官的长度及重量最高,白头鹎和小鹀居中,而食虫鸟红头长尾山雀的各项指标最低。这些结果表明,食性在4种雀形目鸟类的消化道进化中占有十分重要的地位,由于食性的差异其表现出了不同的消化道形态适应特征:丝光椋鸟、白头鹎及小鹀较长及较重的消化道是对食物质量要求相对较低的适应,而红头长尾山雀消化道较小的重量及较短的长度符合其摄取较高质量食物的要求。Food quality and energy need play important roles in the animal's gut morphology.Tract morphology among four passerine birds in Wenzhou was examined in order to reveal the relationship between food habits and digestive tract morphology.Nine silky starlings Sturnus sericeus,twelve Chinese bulbuls Pycnonotus sinensis,eight little buntings Emberiza pusilla,and seven red-headed tits Aegithalos concinnus were live-trapped by mist net in Wenzhou city,Zhejiang province from April to June 2006.The results showed that the total length (TOL),total empty weight (TOE) and total dry weight (TOD) of alimentary,stomach empty weight (STE) and stomach dry weight (STD),small intestine length (SIL),small intestine empty weight (SIE) and small intestine dry weight (SID),and rectum length (REL),rectum empty weight (REE) and rectum dry weight (RED) are different among the four species.The omnivorous,Sturnus sericeus,had the largest length and/or weight of total alimentary,stomach,small intestine and rectum.In contrast to the results for Sturnus sericeus,the insectivorous bird,Aegithalos concinnus had the smallest length and/or weight of total alimentary.The results showed that the different features of gut morphology among these species are functional adaptations of the different food habits.
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