ONE-WAY INTROGRESSION OF A SUBSPECIFIC SEX-CHROMOSOME MARKER IN A HYBRID ZONE

被引：25

作者：

FERRIS, C ^{[1
]}

RUBIO, JM ^{[1
]}

SERRANO, L ^{[1
]}

GOSALVEZ, J ^{[1
]}

HEWITT, GM ^{[1
]}

机构：

[1] UNIV AUTONOMA MADRID, DEPT BIOL, E-28049 MADRID, SPAIN

来源：

HEREDITY | 1993年 / 71卷

关键词：

GRASSHOPPERS; HYBRID ZONES; INSECT CYTOGENETICS; INTROGRESSION; NONCOINCIDENT CLINES; NUCLEOLAR ORGANIZING REGIONS (NORS);

D O I：

10.1038/hdy.1993.115

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

A hybrid zone occurs along the ridge of the Pyrenees between two subspecies of the meadow grasshopper Chorthippus parallelus. C-banding reveals differences between the chromosomes of these two subspecies, especially for the X chromosome. One C-band is closely associated with an active nucleolar organizing region (NOR) on the X chromosome of Cp. parallelus but is absent from Cp. erythropus and can be used as a marker to follow the NOR. The cline for this marker is very narrow (1 km) and shows remarkable non-coincidence with other clines. It is displaced to the south by 5 km at Col du Pourtalet and 15 km at Col de la Quillane. Recombinants between the marker and other subspecific bands occur but are infrequent. The causes and consequences of such non-coincidence of clines are discussed.

引用

页码：119 / 129

页数：11

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