Online ISSN : 1348-7019
Print ISSN : 0011-4545
Sperm Formation in Archaeomysis kokuboi li (Mysidae, Crustacea)
Hiroshi YabuYukiyoshi Kamihira
ジャーナル フリー

1999 年 64 巻 1 号 p. 51-54


The development of sperm formation in the seminal vesicles of Archaeomysis kokuboi Ii (Mysidacea, Gastrosaccinae) is described on the materials collected from the sandy shore at Nesaki-cho Hakodate, Hokkaido from June to November in 1997. The malformed sperms with bifurcate tail were observed liberating from the seminal vesicle of a male obtained in late November. The metaphase nuclei in the seminal vesicles proved to have chromosome number of 2n=40 at mitosis, and n=20 at Meiosis I. Metaphase nuclei at Meiosis I in the seminal vesicles from a male obtained in late November showed usually to have one heterogeneous chromosome which behaves isolately from the others.

© The Japan Mendel Society
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