Park E H, Grimm H
Cytogenet Cell Genet. 1981;31(3):167-74. doi: 10.1159/000131642.
The ZW sex chromosomes of the European eel, Anguilla anguilla, and the American eel, A. rostrata, were examined with C-band and fluorescent staining to demonstrate the C-band heterochromatin. The W as well as Z chromosomes in both species are C-band negative except for a small amount of C-band heterochromatin in the centromeric region, in contrast to the W or Y elements of most other vertebrates. No fluorescing W-associated body is evident either in interphase nuclei or in metaphase plates. The ZW chromosomes of the two species have substantially similar size, morphology, and patterns of C-band heterochromatin. Karyologic and evolutionary implications are discussed.
运用C带和荧光染色技术对欧洲鳗鲡（Anguilla anguilla）和美洲鳗鲡（A. rostrata）的ZW性染色体进行了检测，以显示C带异染色质。与大多数其他脊椎动物的W或Y染色体不同，这两个物种的W染色体和Z染色体除了在着丝粒区域有少量C带异染色质外，C带均为阴性。在间期核或中期板中均未发现明显的与W相关的荧光体。这两个物种的ZW染色体在大小、形态和C带异染色质模式上基本相似。文中还讨论了其染色体学和进化意义。
