Development of carp eggs inseminated with some foreign sperms (preliminary report)

概要

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The cross experiments between carp eggs and some foreign sperms, i. e. between different classes, suborders, families or genera, were performed and the development of stocks of crossed eggs were compared with each other. In the interfamiliar and intergeneric cross bred eggs the initial cleavage seemed to be identical with that of pure bred ones. Most of them died at the gastrula or the hatching stage, and a few were deformed larvae which died within one to twenty-one days after hatching. However, the crossed eggs between carp (Cyprinus carpio) _??_ × crusian carp (Carassius carassius) _??_ developed norrnally. In the eggs crossed with crusian carp_??_, fat minnow (Sarcocheilichthys variegatus) _??_, schyth fish (Pseudogobio esocinus) _??_ and common Japanese bitteling (Acheilognathus lanceolata) _??_, a gradient of the developnlental vlgor was found, and the order of this gradient is almost in favour of that from the phylogenetic tree which was made by H. KOBAYASI (1952). But the eggs crossed with Misgurnus anguillicaudatus (Cobitidae) _??_ developed more vigorousiv than that with A. lanceolata (Cyprinidae) _??_. This fact seems to suggest that the success in development of heterogenic cross bred eggs is not always correlated with the taxonomical affinity of the species used. The eggs crossed with medaka (Oryzias latipes) _??_ which is of a different suborder and with a frog (Rana nigromaculata) _??_ did not develop at all.
日本魚類学会の論文