南充市嘉陵江两岸四川短尾鼩种群生态及形态特征比较  

Morphological Characteristics and Population Ecology of Anourosorex Squamipes on the Banks of Jialing River in Nanchong City

作　　者：刘清君[1] 胡锦矗[1] 尹彦强[1] 吴攀文[1] 

机构地区：[1]西华师范大学珍稀动植物研究所,四川南充637002

出　　处：《绵阳师范学院学报》2009年第5期58-63,共6页Journal of Mianyang Teachers＇ College

基　　金：国家自然科学基金项目(30470261)

摘　　要：2007年3月-10月对南充市嘉陵江两岸农田和荒地生境的四川短尾鼩(Anourosorex squamipes)进行捕捉,放有效铗日5460,共捕获四川短尾鼩157只(3只未能辨性别),雌雄比例为1.2(♀84/♂70),与1∶1无显著差异(X2=1.273,P=0.259)。高坪区与嘉陵区成年雌体体重(P=0.012)、胴体重存在显著差异(P=0.008),雄体之间差异不显著。收集高坪区与嘉陵区的成年完整头骨标本195个,经T-检验表明成年组在枕大孔宽,上颌臼齿外宽,听泡长,下颌齿列长,脑颅最大宽存在极显著差异外,眶间距,上颌齿列长,枕大孔高,下颊齿列基长差异不显著。四川短尾鼩的种群数量从3月到10月逐渐增加,高坪区嘉陵江畔四川短尾鼩的怀孕率明显高于嘉陵区嘉陵江畔。From March to October, we trapped 157 Anourosorex squamipes in the cropland and the badlands on the bank of Jialing river in Nanchong city with two types of ferric nip in the year of 2007. the proportion of female and male is 1.2. There is no significant difference with the Chi - squares Test. The number of Anourosorex squamipes become larger and larger from March to October, there is a bigger pregnancy in June. The comparison of the skull in two areas show that there are significant difference in Greatest breadth of the foramen magnum, Greatest palatal breath, Greatest neurocranium breath , auditory capsule length, length of mandibular tooth row including first incisor. The difference of least interiorbital width, length of tooth row, height of the foramen magnum, length of the checktooth row is no significant. The morphological characteristics also show some differences ： The number of Anourosorex squamipes becomes larger from March to October. The pregnancy rate of Anourosorex squamipes shows that it is higher in Gaoping borough.

关 键 词：四川短尾鼩 嘉陵江 种群生态 形态特征 

分 类 号：Q958.2[生物学—动物学]