摘要
2013年5-9月在北江上游采集东陂长汀品唇鳅Pseudogastromyzon(Labigastromyzon)Changtingensis Tungpeiensis,对其耳石、鳞片、脊椎骨和鳃盖骨等4种年龄鉴定材料的轮纹观察分析,探讨其鉴定年龄的可行性.结果显示:耳石和主鳃盖骨均无明显可计数的年轮;在入射光下脊椎骨呈现出明暗相间的条纹,无明显杂纹,年轮清晰;鳞片年轮表现为疏密型,中央区域出现溶蚀现象,鳞片有生殖痕现象.脊椎骨的判别能力为94.27%,鳞片的判别能力为72.43%.两鉴定者对脊椎骨鉴定吻合率为93.92%,对鳞片鉴定吻合率为63.33%,鉴定脊椎骨和鳞片吻合率分别为85%和81.67%.脊椎骨是东陂长汀品唇鳅年龄鉴定的最佳材料,鳞片辅助鉴定材料,鳃盖骨和耳石则不适于东陂长汀品唇鳅的年龄鉴定.
The morphology and annulus chararacteristics of Pseudogastromyzon（Labigastromyzon）changtingensis tungpeiensiswere described by four aging materials（otoolith,scale,vertebra and operculum）in Beijiang river during May and June and from August to November of 2013,and then the suitable aging materials were determined in terms of interpretability agreement.The results showed that the incremental deposition on the vertebra was distinct,demonstrating an obvious alternate opaque zone and translucent zone under reflected light.While otoolith and operculum were not showed clearly,leading to underestimateding aging.The annuli characteristics of scale displayed a patterm of alternating zones of widely and closely spaced circular,and the outer edges of the circular were annuli.The vertebra and scale interpret ability of Pseudogastromyzon（Labigastromyzon）changtingensis tungpeiensis were 94.27% and 72.43%,respectively.Ages assigned based on vertebra and scale from the same specimen by two independent Identifiers,age agreement of Pseudogastromyzon（Labigastromyzon）changtingensis tungpeiens is 93.92% and 63.33%,respectively.The percent age of agreement values for vertebra and scale between two age reading results was 85% and 81.67%,respectively.To summarize,vertebra are the best age determination material for Pseudogastromyzon（Labigastromyzon）changtingensis tungpeiensisin Beijiang river.Scales can be used for age determination of individuals less than 4 years old,while otoolith and operculum are not suitable for determining the age of Pseudogastromyzon（Labigastromyzon）changtingensis tungpeiensis.
作者
李红敬
李晓风
吴怀书
肖永静
LI Hongjing;LI Xiaofeng;WU Huaishu;XIAO Yongjing(College of Life Sciences,Xinyang Normal University,Xinyang 464000,Chin)
出处
《信阳师范学院学报（自然科学版）》
CAS
北大核心
2018年第3期402-407,共6页
Journal of Xinyang Normal University(Natural Science Edition)
基金
国家自然科学基金项目(U1204306)
河南省教育厅科学技术研究重点项目(12A180023)
关键词
北江
东陂长汀品唇鳅
年轮
Bcijiang river
Pseuclogastrornyzon （Labigastrornyzon） changtingensis tungpeiensis
annuli
