Effects of juvenile hormone III on morphogenetic changes during a molt from each nymphal instar in the termite Reticulitermes speratus (Isoptera: Rhinotermitidae)
スポンサーリンク
概要
- 論文の詳細を見る
Termite castes are defined by their specific characteristics. It is said that juvenile hormone (JH) plays an important role in caste differentiation and JH has been shown to highly influence imaginal-organ development, as well as soldier-specific morphogenesis in some species. To provide additional comparative data for interpreting the effects of JH on the development of alate and soldier characteristics, we performed morphological investigations on newly molted individuals from different nymphal instars of Reticulitermes speratus induced by various concentrations of JH III. As a result, each organ (especially wing (-bud) and mandible) development was shown to be strongly affected by JH III in each nymphal instar. Moreover, depending on the JH III concentration, there was a trade-off-like relationship between wing formation (alate character) and mandibular elongation (soldier character) only in molted individuals from final instar nymphs. Our results suggest that the endogenous JH titer or the threshold titer for caste-specific morphogenesis changes via nymphal development in R. speratus. This study shows that highly developmental plasticity is retained in the derived species of termites, and that it must be a driving force of caste evolution.
- Japanese Society of Applied Entomology and Zoologyの論文
著者
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Watanabe Dai
Graduate School Of Science And Engineering University Of Toyama;
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Maekawa Kiyoto
Graduate School Of Science And Engineering University Of Toyama
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Maekawa Kiyoto
Graduate School Of Sci. And Engineering Univ. Of Toyama
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Shirasaki Ikkei
Graduate School of Science and Engineering, University of Toyama
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Watanabe Dai
Graduate School Of Sci. And Engineering Univ. Of Toyama
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Watanabe Dai
Graduate School of Science and Engineering, University of Toyama
関連論文
- Effects of juvenile hormone III on morphogenetic changes during a molt from each nymphal instar in the termite Reticulitermes speratus (Isoptera: Rhinotermitidae)
- Effect on mandibular length of juvenile hormones and regulation of soldier differentiation in the termite Reticulitermes speratus (Isoptera: Rhinotermitidae)
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