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Significance of two different ranking methods for studying fish fauna:a case study on the fish fauna from upper and middle portions from Mekong River

引用

Integrative Zoology 2023年第2期18卷 316-332页

作者： Wei ZHOU Xu LI Key Laboratory for Conserving Wildlife with Small Populations in Yunnan Southwest Forestry UniversityKunmingChina

Studies onﬁsh fauna should not only focus onﬁsh composition and the comparison ofﬁsh composition among the study region and adjacent regions,but should also explore the origin and uniqueness of different taxa as well as the substitution of genera and species.In this study,the value ofﬂoristic presence method was modiﬁed and renamed the value ofﬁsh fauna presence(VFFP)method.The speciﬁc steps of the VFFP method and the traditionalﬁsh fauna analysis(TFFA)method were reﬁned and standardized.Then,the VFFP and TFFA methods were applied to study theﬁsh fauna of the upper and middle portions of the Mekong River basin.The results indicate that the TFFA method reﬂects the families(subfamilies)and genera that constitute the main body ofﬁsh in the studied river basin.The results of the VFFP method show which families(subfamilies)and genera are representative for the basin.Therefore,combining the TFFA and VFFP methods to analyze the composition ofﬁsh fauna can reﬂect the characteristics ofﬁsh fauna from different perspectives.The case study shows that theﬁsh fauna of the Mekong River is a part of theﬁsh fauna of Southeast Asia.Although it shows some similarities to the composition of South Asianﬁsh fauna,it does not belong to the South Asianﬁsh fauna as a whole,and is essentially different from the East Asianﬁsh fauna.This study provides an objective,quantitative,and veriﬁable method for studyingﬁsh fauna.

关键词： ﬁsh composition ranking Southeast Asia traditionalﬁsh fauna analysis value ofﬁsh fauna presence

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