DIFFERENT RATE OF INTRAPOPULATION CHROMOSOME POLYMORPHISM IN 2 SPECIES OF BLACK-SEA BLENNIES (BLENNIIDAE, PISCES)

被引：3
|
作者：
AREFJEV, VA
机构：
[1] Laboratory of Muriculture, Institute of Marine Fisheries and Oceanography (VNIRO), Moscow, 107140, Verh
来源：
GENETICA | 1991年 / 83卷 / 03期
关键词：
D O I：
10.1007/BF00126223
中图分类号：
Q3 [遗传学];
学科分类号：
071007 ; 090102 ;
摘要：
Somatic karyotypes in seven specimens of Blennius sanguinolentus include 22 subtelocentric and 26 acrocentric chromosomes, whereas one male has 2n = 47 = 1M + 22ST + 24A: polymorphism is evidently a result of centric fusion of two acrocentrics. Blennius tentacularis is characterized by the availability of four karyomorphs out of which three coincide with karyotypes described earlier (Carbone et al., 1987). Karyotype-I consists of a 48 small uni-armed chromosome, but both karotypes II and III with 2n = 48 and 2n = 47 respectively include one large acrocentric chromosome, and karyotype-IV has one large submetacentric out of the 47 chromosomes. Karyotypic variability of B. tentacularis is attributed either to polymorphism by 1-3 chromosome rearrangements or to availability of sex-determining mechanism, including the Y-autosome translocation. This diverse series of male karyomorphs may reflect the complicated behavioural structure.
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页码：181 / 187
页数：7
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