二叠纪末生物大灭绝后介形虫个体发育的差异响应  

Differential Response of Ostracod Ontogeny after the End Permian Mass Extinction

作　　者：袁爱华[1] 万俊雨 赵奎 马雪峰 冯琴霜 喻建新[1,6] 冯庆来[1,7] Yuan Aihua;Wan Junyu;Zhao Kui;Ma Xuefeng;Feng Qinshuang;Yu Jianxin;Feng Qinglai(School of Earth Sciences,China University of Geosciences(Wuhan),Wuhan 430074,China;Wuxi Research Institute of Petroleum Geology,SINOPEC,Wuxi 214126,China;Jiangxi Nonferrous Geological Mineral Exploration and Development Institute,Nanchang 330030,China;Zhejiang Mineral Resources Group Co.,Ltd.,Hangzhou 310007,China;College of Environment and Ecology,Chongqing University,Chongqing 400045,China;State Key Laboratory of Geomicrobiology and Environmental Changes,China University of Geosciences(Wuhan),Wuhan 430078,China;State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences(Wuhan),Wuhan 430078,China)

机构地区：[1]中国地质大学(武汉)地球科学学院,湖北武汉430074 [2]中国石化石油勘探开发研究院无锡石油地质研究所,江苏无锡214126 [3]江西有色地质矿产勘查开发院,江西南昌330030 [4]浙江省矿产资源集团有限公司,浙江杭州310007 [5]重庆大学环境与生态学院,重庆400045 [6]中国地质大学(武汉)地质微生物与环境全国重点实验室,湖北武汉430078 [7]中国地质大学(武汉)地质过程与成矿预测全国重点实验室,湖北武汉430078

出　　处：《地球科学》2025年第3期1023-1036,共14页Earth Science

基　　金：国家自然科学基金项目(Nos.42430209,41730320,40902002).

摘　　要：二叠纪-三叠纪之交发生了显生宙规模最大的生物灭绝事件,但介形虫仍有较为丰富的化石产出,为研究生物在灭绝与复苏过程中的适应性演化提供了重要载体.本研究以该时期浅海环境广泛分布的4个介形虫种为研究对象,对1172个壳体大小进行了测量和数据分析,发现大灭绝事件后,介形虫的种群年龄结构、生长速率和体型大小均发生了一定程度的异常变化,但在不同相区、不同种和不同生长发育阶段之间的变化不尽相同,表明介形虫为应对大灭绝事件所采取的生存策略具有主动性、多样性和复杂性.There are relatively abundant ostracod fossils remaining when the most critical mass extinction in the Phanerozoic occurs during the Permian-Triassic.These fossils provide an important carrier for studying the adaptive evolution of organisms undergoing the extinction and recovery.This research focuses on four ostracod species widely distributed in shallow marine environment during this period and measured and analyzed 1172 valves/carapaces for length and height.The results display certain degree of abnormal variations take place in the ostracod instar structure,growth rate and body size following the mass extinction,but the changes vary among different sedimentary facies,species and ontogeny stages.This indicates that ostracods may have adopted proactive,diverse,and complex survival strategies in response to the mass extinction.

关 键 词：二叠纪-三叠纪之交 生物演化 介形虫 个体发育 壳体大小 地层学 环境影响 

分 类 号：P52[天文地球—古生物学与地层学]