東京湾産アサクサノリの種類〔予報〕

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概要

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• The "Asaksanori" (the laver cultivated in Japan) has been supposed to be separable into several forms, but to distinguish decidedly in each form is difficult for their simple organization and their much variable shape. Kunieda3) proposed that the number of horizontally divided cells of a sporeling just before the appearance of the first virtical division -"n"- makes the most reliable criterion for forms. By observing "n", the author divided the "Asakusanori" in the Tokyo Bay into seven forms (Cf. Fig. 1 and Table 1). A point of importance is that other characters beside "n" of these forms also change hand in hand with "n". The form 1-4 multiply sexually and asexually, the form 5-7 only sexually. The shape of the fronds is round in the form 1, slender in the form 6, most slender in the form 7. The form 5-7 luxiliate early in winter, the form 1-2 late in winter.

• 社団法人 日本水産学会の論文

著者

• 須藤 俊造

  水産試驗場

関連論文

• 東京湾産アサクサノリの種類〔予報〕
• On a Method of" Sowing " the Spores of an Alga of Commercial Value, Gloiopeltis tenax, on the Rocky Shores

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