Androgenetic reproduction in a freshwater diploid clam Corbicula fluminea (Bivalvia: Corbiculidae)

被引:42
|
作者
Ishibashi, R [1 ]
Ookubo, K
Aoki, M
Utaki, M
Komaru, A
Kawamura, K
机构
[1] Mie Univ, Fac Bioresources, Tsu, Mie 5148507, Japan
[2] Natl Res Inst Aquaculture, Nansei, Mie 5160193, Japan
关键词
androgenesis; Corbicula; meiosis; clam; fertilization;
D O I
10.2108/zsj.20.727
中图分类号
Q95 [动物学];
学科分类号
071002 ;
摘要
Two shell color types of the exotic bivalve Corbicula fluminea were collected in Kyoto city, Japan. DNA microfluorometry revealed that both types were diploids with non-reductional spermatozoa. Maternal chromosomes were found to be extruded as two polar bodies at the first meiosis, and the second meiosis could not be observed. Only the male pronucleus was present in the egg cytoplasm and became metaphase chromosomes at the first mitosis. The present study indicates that the diploid C. fluminea in Japan has the same mode of androgenetic reproduction as the triploid C. leana.
引用
收藏
页码:727 / 732
页数:6
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