- 著者
- Matsuda Yoichi Nishida-Umehara Chizuko Tarui Hiroshi Kuroiwa Asato Yamada Kazuhiko Isobe Taku Ando Junko Fujiwara Atushi Hirao Yukako Nishimura Osamu Ishijima Junko Hayashi Akiko Saito Toshiyuki Murakami Takahiro Murakami Yasunori Kuratani Shigeru Agata Kiyokazu
- 出版者
- Springer Netherlands
- 雑誌
- Chromosome Research (ISSN:09673849)
- 巻号頁・発行日
- vol.13, no.6, pp.601-615, 2005-08
- 被引用文献数
- 97
The karyotypes of birds, turtles and snakes are characterized by two distinct chromosomal components, macrochromosomes and microchromosomes. This close karyological relationship between birds and reptiles has long been a topic of speculation among cytogeneticists and evolutionary biologists; however, there is scarcely any evidence for orthology at the molecular level. To define the conserved chromosome synteny among humans, chickens and reptiles and the process of genome evolution in the amniotes, we constructed comparative cytogenetic maps of the Chinese soft-shelled turtle (Pelodiscus sinensis) and the Japanese four-striped rat snake (Elaphe quadrivirgata) using cDNA clones of reptile functional genes. Homology between the turtle and chicken chromosomes is highly conserved, with the six largest chromosomes being almost equivalent to each other. On the other hand, homology to chicken chromosomes is lower in the snake than in the turtle. Turtle chromosome 6q and snake chromosome 2p represent conserved synteny with the chicken Z chromosome. These results suggest that the avian and turtle genomes have been well conserved during the evolution of the Arcosauria. The avian and snake sex Z chromosomes were derived from different autosomes in a common ancestor, indicating that the causative genes of sex determination may be different between birds and snakes.
- 著者
- Matsuda Yoichi Nishida-Umehara Chizuko Tarui Hiroshi Kuroiwa Asato Yamada Kazuhiko Isobe Taku Ando Junko Fujiwara Atushi Hirao Yukako Nishimura Osamu Ishijima Junko Hayashi Akiko Saito Toshiyuki Murakami Takahiro Murakami Yasunori Kuratani Shigeru Agata Kiyokazu
- 出版者
- Springer Netherlands
- 雑誌
- Chromosome Research (ISSN:09673849)
- 巻号頁・発行日
- vol.13, no.6, pp.601-615, 2005-08
- 被引用文献数
- 1
- 著者
- Osumi-Yamashita Noriko Kuratani Shigeru Ninomiya Youichirou AOKI Kaori ISEKI Sachiko CHAREONVIT Suconta DOI Hirofumi FUJIWARA Michio WATANABE Tadashi ETO Kazuhiro
- 出版者
- Japanese Society of Developmental Biologists
- 雑誌
- Development, growth & differentiation (ISSN:00121592)
- 巻号頁・発行日
- vol.39, no.1, pp.53-67, 1997-02-01
- 参考文献数
- 43
- 被引用文献数
- 5
- 著者
- Ota Kinya G. Kuratani Shigeru
- 出版者
- 社団法人日本動物学会
- 雑誌
- Zoological science (ISSN:02890003)
- 巻号頁・発行日
- vol.23, no.5, pp.403-418, 2006-05-25
- 被引用文献数
- 1 53
Due to their curious phylogenetic position and anatomy, hagfishes have attracted the interest of zoologists, especially in the context of vertebrate evolution. Embryological information on these animals is now also needed in the field of evolutionary developmental biology (Evo-Devo), as it is expected to provide hints about the origin of vertebrate traits, whether the hagfishes are an in- or outgroup of vertebrates. This review summarizes the importance of hagfish embryology from a phylogenetic perspective, and the history of attempts to obtain hagfish eggs and embryos. Clearly, the main difficulty associated with these animals is their deep-sea habitat. To circumvent this problem, this review also discusses the future prospects for obtaining embryological material, both from the wild and in the laboratory.