Simulation of Cuora galbinifrons nest predation
Simulation of Cuora galbinifrons nest predation
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作者：
L. Mi
巢捕食是产卵失败的主要原因。2013年3 - 5月，在海南岛吊罗山自然保护区吊罗山村，采用埋藏赤耳龟卵的方法模拟印支闭壳龟（Cuora galbinifrons）的巢，研究不同生境下的巢捕食者类型、捕食率及其对繁殖成功率的影响。在种植园林、次生林和原生林中均匀放置120个人工巢（每个巢两个蛋），并在巢样本周围放置触发式相机以识别捕食者。结果表明，66。7%的巢被掠夺，小型哺乳动物（51。3%）和蚂蚁（28. 8%）为主要捕食者。这些森林的捕食率为72。5%，62。5%，62。5%，但差异无统计学意义（P > 0. 05）。05，n = 40）。在次生林中，林心的巢捕食率高于林缘（P 0. 05）。05，n = 20）。种植园林和原始林的巢捕食率在林心和林缘之间无明显差异。
Nest predation in ovipara is a primary cause of reproductive failure. To investigate the type of nest predators,predation rates and the effect on breeding success of Indo-Chinese box turtle( Cuora galbinifrons) in different habitats,we buried eggs of red-eared turtle( Trachemys scripta elegans) to simulate Indo-Chinese box turtle nests at Diaoluoshan village,Diaoluo Nature Reserve in Hainan Island from March to May 2013. One hundred and twenty artificial nests( two eggs per nest) were evenly placed in plantation forest,secondary forest and primary forest,and triggered cameras were placed around a sample of nests to identify predators. The result indicated that 66. 7% nests were depredated,and small mammals( 51. 3%) and ants( 28. 8%) were the main predators. Predation rates in these forests were 72. 5%,62. 5% and 62. 5% respectively,but the differences were not significant( P 0. 05,n = 40). In secondary forest,the nest predation rate was higher in forest centers than in forest edges( P 0. 05,n = 20). No obvious differences were found in nest predation rate between forest centers and edges in plantation forest and primary forest.