コクサグモを混合した場合のジグモ1令幼虫の越冬Colony形成に及ぼす影響
1966 年 20 巻 1 号 p. 9-17
詳細
1966 年 20 巻 1 号 p. 9-17
1. I explained about the influence given to the first larva of Atypus karschi by Agelena opulenta in the case of formation of their winter-colony.
2. There are four cases which are called the influences given by Agelena opuknta.
a. The formation of the Atypus karschi's colony do not progress easily.
b. It takes too much time to complete the colony.
c. It is difficult for them to make the fixed colony.
d. They make the fixed colony at the place of low value.
3. Every colony never mix one another.
4. Atypus karschi in the mixed group is weak against the Agelena opulenta in the closed ecosystem such as the petridishes, so their colonies are generally small and unstable, and the growth rate is very small. We saw this in Morishita's Iδ-index curves.
