Parentage determination of an isolated Yangtze finless porpoise population Neophocaena phocaenoides asiaeorientalis in the Yangtze Tian-e-Zhou Baiji National Natural Reserve based on molecular data  

作　　者：XIAJunhong ZHENGJinsong XULimei WANGDing 

机构地区：[1]InstituteofHydrobiology,ChineseAcademyofSciences,Wuhan430072,China／／GraduateSchooloftheChineseAcademyofSciences,Beijing100039,China [2]InstituteofHydrobiology,ChineseAcademyofSciences,Wuhan430072,China

出　　处：《Progress in Natural Science:Materials International》2005年第2期149-156,共8页自然科学进展·国际材料（英文版）

基　　金：SupportedbytheNationalNaturalScienceFoundationofChina(GrantNo.30170142),ChineseAcademyofSciences(GrantNo.KSCX2SW118),theInstituteofHydrobiology,CAS(GrantNo.220103),andOceanParkConservationFoundationinHongKong(2002-2003)

摘　　要：Reproductive behaviors are poorly known for the Yangtze finless porpoiseNeophocaena phocaenoides asiaeorientalis. In this study, the parentage of an isolated Yangtzefinless porpoise population inhabiting the Yangtze Tian-e-Zhou Baiji National Natural Reserve isdetermined by analysis of microsatellite loci and mitochondrial DNA (rntDNA) control regionsequences, and the porpoise's reproductive behaviors are studied Overall 4 full parentageassignments and additional 3 single parentage assignments were determined for the population of 23individuals. The analysis shows that their estimated reproductive cycle is shorter than thatreported previously and there probably exists an overlapping between gestation and lactation period.The study also showsthat the female does not show fidelity to a particular male for breeding andvice versa, the oldest males did not monopolize mating and the dominance rank could not he so strictfor the porpoise society Moreover, the porpoise's mating pattern and relatedness among candidateparents are discussed here. These results provide important information for making guidelines ofmanagement and conservation for this protected population.Reproductive behaviors are poorly known for the Yangtze finless porpoise Neophocaena phocaenoides asiaeorientalis. In this study, the parentage of an isolated Yangtze finless porpoise population inhabiting the Yangtze Tian-e-Zhou Baiji National Natural Reserve is determined by analysis of microsatellite loci and mitochondrial DNA (mtDNA) control region sequences, and the porpoise’s reproductive behaviors are studied. Overall 4 full parentage assignments and additional 3 single parentage assignments were determined for the population of 23 individuals. The analysis shows that their estimated reproductive cycle is shorter than that reported previously and there probably exists an overlapping between gestation and lactation period. The study also shows that the female does not show fidelity to a particular male for breeding and vice versa, the oldest males did not monopolize mating and the dominance rank could not be so strict for the porpoise society. Moreover, the porpoise’s mating pattern and relatedness among candidate parents are discussed here. These results provide important information for making guidelines of management and conservation for this protected population.

关 键 词：Yangtze finless porpoise isolated population reproductive behavior PARENTAGE 

分 类 号：Q959.489[生物学—动物学]