〈Original〉Efficiency of fluorescent elastomer internal tags on the Japanese brown frog, Rana japonica, during metamorphosis

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  • 変態期のニホンアカガエルにおける蛍光イラストマータグの有効性
  • ヘンタイキ ノ ニホンアカガエル ニ オケル ケイコウ イラストマータグ ノ ユウコウセイ

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Abstract

<Synopsis>Fluorescent elastomer internal tags were injected into the larvae of Japanese brown frog, Rana japonica in a laboratory. Larvae with a tag were reared until metamorphosis was completed. The tags were injected into the posterodorsal or tail regions under the skin. Metamorphosis completion rates were 80％ in the tail, and 50％ in the posterodorsal region. Tag retention rates were 50％ in the tail, and 94％ in the posterodorsal region. Injecting tags into the posterodorsal region sometimes led to debilitation. Injecting them into the tail was less stressful than injecting them into the posterodorsal region. These results indicated that the fluorescent elastomer internal tag is a useful marking method for frogs during metamorphosisfrom larvae to adults.

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