Stage composition of overwintering field populations of the Japanese cockroach, Periplaneta japonica

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  • ヤマトゴキブリ自然越冬個体群のステージ構成
  • ヤマトゴキブリ自然越冬個体群のステージ構成〔英文〕
  • ヤマトゴキブリ シゼン エットウ コタイグン ノ ステージ コウセイ エイブン

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Abstract

The stage composition of P. japonica populations overwintering outdoors in Niigata Prefecture was investigated. The populations consisted of two groups in terms of their developmental stage, final instar nymphs and much younger ones. More than 50% of the latter were second instar nymphs. The results obtained here would substantially support the speculation of Tsuji and Mizuno (1972).

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