Temporal pattern of naticid predation on Glycymeris yessoensis (Sowerby) during the late Cenozoic in Japan
Temporal pattern of naticid predation on Glycymeris yessoensis (Sowerby) during the late Cenozoic in Japan
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DOI：
10.2110/palo.2005.p05-37e
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发表时间：
2006-08-01
期刊：
影响因子：
1.6
通讯作者：
Amano, Kazutaka
中科院分区：
文献类型：
--
作者：
Amano, Kazutaka
在晚新生代期间，没有发现土生动物对Glycymeris yessoensis钻孔强度的时间趋势。晚新生代钻井地点从隆起转向阀中心。这一变化可能反映了捕食者从中新世的舌蜥到更新世的隐蜥或真旋蜥的变化。中更新世的钻孔遗址比更新世早期的人口更刻板，尽管相同的捕食者。边缘钻孔是一种更快的钻孔方法，最早出现在早更新世显示高钻孔强度的种群中。由于升级假设的预测是捕食者行为的变化是随着时间的推移而发展的，因此钻探位置的这些变化可能是升级的结果。与钻孔位置的刻板趋势相反，捕食者-猎物大小的相关系数从早更新世到中更新世逐渐减小。
No temporal trend in the intensity of drilling by naticids on Glycymeris yessoensis can be recognized during the late Cenozoic. Drilling sites shifted from the umbo to the center of the valve during the late Cenozoic. This shift might reflect the change of predators from Glossaulax in the Miocene to Cryptonatica or Euspira in the Pleistocene. Borehole sites in the middle Pleistocene were more stereotyped than in the early Pleistocene population despite the same predators. Edge drilling, which is a faster drilling method, first appeared in the population showing high drilling intensities in the early Pleistocene. Because a prediction of the hypothesis of escalation is that changes in predators' behavior developed through time, these changes in drilling location may be the results of escalation. In contrast with the stereotypic trend of borehole sites, correlation coefficients of predator-prey size decreased from the early to the middle Pleistocene.