地龟消化系统形态学及食性分析

Morphology of Digestive System and Food Analysis of Geoemyda spengleri

地龟Geoemyda spengleri消化道分为口咽腔、食道、胃、小肠、大肠,消化道全长为背甲最大直线长的3.70倍。小肠长度占消化道全长的比例最大,为52.7%。肝质量占体质量的2.80%。通过解剖消化道得知,野生地龟的食性主要为一些昆虫及其幼虫、马陆等,如双距螯蜂Gonatopus sp.、丝光绿蝇Lucilia sericata、条马陆Julus terrestris等。人工饲养条件下,地龟可捕食昆虫纲Insecta、多足纲Myriapoda、寡毛纲Oligochaeta、甲壳纲Crustacea、蛛形纲Arachnida等的小型动物,如黄粉虫Tenebrio molitor、条马陆、环毛蚓Pheretima tschiliensis、鼠妇Armadillidium vulgare Latreille、跳蛛Salticidae等。野生地龟食性的确定对人工驯养繁殖中的饲喂有重要参考价值。

The digestive tract of Geoemyda spengleri is consisted of 5 parts,such as cavum oropharyngeum,esophagus,stomach,small intestine,and large intestine. And the whole length of digestive tract was 3. 70 times as long as that of the maximum straight carapace. The length of small intestine occupied 52. 7% of the whole digestive tract. The weight of liver was about 2. 80% of the body weight. On the basis of anatomical analysis on digestive tract,we found that the feeding habit of G. spengleri containing insects,larvae,and millipedes such as Gonatopus sp.,Lucilia sericata,Julus terrestris and so on.Under the conditions of artificial feeding,G. spengleri can eat small animals such as Insecta,Myriapoda,Oligochaeta,Crustacea,Arachnida,for example,Tenebrio molitor,J. terrestris,Pheretima tschiliensis,Armadillidium vulgare Latreille,Salticidae and so on. These findings provided important reference value for artificial domestication and breeding of G. spengleri.