…The latter outbreaks are often seen in insects that are harmful to agricultural crops and forests, and can often cause devastating damage, making them a serious problem in agriculture and forestry. In some insect outbreaks, individuals may show unique changes in physiology, morphology, behavior, etc. (gregarious phase) compared to normal (solitary phase), and this phenomenon is called phase variation. A sudden increase in density in the outbreak area often causes a collective migration of the population. … *Some of the terminology that mentions "phase variation" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…後者の大発生は農作物や森林の病害昆虫によく見られ,しばしば破滅的な大被害をもたらすことがあり,農林学上深刻な問題となる。 ある種の昆虫の大発生においては,個体が通常の場合(孤独相)に比べ生理・形態・行動などの面で特異な変化をみせる場合(群生相)があり,この現象は相変異phase variationと呼ばれている。大発生地における急激な密度増加は,多くの場合個体群の集団的な移動を引き起こす。… ※「phase variation」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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