MITOCHONDRIAL-DNA SEQUENCE DIVERGENCE AMONG SOME WEST-EUROPEAN BROWN BEAR (URSUS-ARCTOS L) POPULATIONS - LESSONS FOR CONSERVATION

被引:58
作者
RANDI, E
GENTILE, L
BOSCAGLI, G
HUBER, D
ROTH, HU
机构
[1] CTR ECOL APPENNINICI,I-67032 PESCASSEROLI,ITALY
[2] UNIV ZAGREB,FAC VET,ZAGREB 41000,CROATIA
关键词
BROWN BEAR; CONSERVATION GENETICS; CYTOCHROME B; D-LOOP; MTDNA; URSUS ARCTOS;
D O I
10.1038/hdy.1994.146
中图分类号
Q14 [生态学(生物生态学)];
学科分类号
071012 ; 0713 ;
摘要
We used the polymerase chain reaction and nucleotide sequencing to study mitochondrial DNA (mtDNA) genetic variability of brown bears (Ursus arctos) belonging to some western European populations. Demographic decline and isolation have apparently shaped genetic variability within and between populations. Small relict bear populations were apparently monomorphic and fixed for different mtDNA haplotypes. Genetic relationships among mtDNA haplotypes suggested the existence of a phylogeographic structure. We discuss the possible roles of historical and demo,oraphic factors in determining the observed genetic patterns. The low genetically effective size of the studied brown bear populations points to risks of continuing future loss of gene diversity and increase in inbreeding. Artificial gene flow through restocking could alleviate inbreeding depression in small isolated brown bear populations, and mtDNA phylogeographic relationships may provide a framework for their genetic management.
引用
收藏
页码:480 / 489
页数:10
相关论文
共 36 条
[1]   GENETICS AND THE CONSERVATION OF GRIZZLY BEARS [J].
ALLENDORF, FW ;
SERVHEEN, C .
TRENDS IN ECOLOGY & EVOLUTION, 1986, 1 (04) :88-89
[2]   SEQUENCE AND ORGANIZATION OF THE HUMAN MITOCHONDRIAL GENOME [J].
ANDERSON, S ;
BANKIER, AT ;
BARRELL, BG ;
DEBRUIJN, MHL ;
COULSON, AR ;
DROUIN, J ;
EPERON, IC ;
NIERLICH, DP ;
ROE, BA ;
SANGER, F ;
SCHREIER, PH ;
SMITH, AJH ;
STADEN, R ;
YOUNG, IG .
NATURE, 1981, 290 (5806) :457-465
[4]  
AVISE JC, 1987, ANNU REV ECOL SYST, V18, P489, DOI 10.1146/annurev.es.18.110187.002421
[5]   DEMOGRAPHIC INFLUENCES ON MITOCHONDRIAL-DNA LINEAGE SURVIVORSHIP IN ANIMAL POPULATIONS [J].
AVISE, JC ;
NEIGEL, JE ;
ARNOLD, J .
JOURNAL OF MOLECULAR EVOLUTION, 1984, 20 (02) :99-105
[6]  
BOSCAGLI G, 1991, 2 ATT SEM IT CENS S, V16, P545
[7]  
BOSCAGLI G, 1994, IN PRESS P INT SEMIN
[8]  
Brown W.M., 1985, MOL EVOL GENET, P95, DOI DOI 10.1007/978-1-4684-4988-4_2
[9]  
CAMARRA J-J, 1990, Aquilo Ser Zoologica, V27, P93
[10]  
CASTELLI G, 1935, ORSO BRUNO VENEZIA T