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1998 Fiscal Year Final Research Report Summary

Role of the compound eye and ocellus in photoperiodism

Research Project

Project/Area Number 09640813
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 動物生理・代謝
Research InstitutionOsaka City University

Principal Investigator

NUMATA Hideharu  Faculty of Science, Osaka City University, Professor, 理学部, 教授 (70172749)

Co-Investigator(Kenkyū-buntansha) SHIGA Sakiko  Faculty of Science, Osaka City University, Lecturer, 理学部, 講師 (90254383)
Project Period (FY) 1997 – 1998
Keywordsphotoperiodism / compound eye / ocellus / photoreceptor / insect
Research Abstract

The present study aims to examine the role of photoreception by the compound eyes and ocelli in photoperiodism. An experiment with surgical removal of the compound eyes suggested that in Armadillidium vulgare the compound eyes are involved in the photoperiodism. Larvae of Leptocarabus kumagaii lost the sensitivity to photoperiod by ablation of the stemmata. However, the mortality after operation was high and the number of insects was not enough for conclusion.
The role of the compound eyes in nymphs of Blattela nipponica and Poecilocoris lewisi is still unclear. In Plautia crossota stali, the compound eyes play a major role in the photoperiodism, although photoreceptors other than the compound eyes can also receive photic information for photoperiodism. Furthermore, Dianemobius nigrofasciatus and Protophormia terraenovae, in which the compound eyes have been shown to be the principal photoreceptor for photoperiodism, used both extraretinal photoreceptors and compound eyes for its entrainment of the circadian activity rhythm.
Therefore, it is suggested that extraretinal photoreceptors in the brain is widely distributed and that compound eyes, extraretinal receptors or both types of photoreceptor are operative depending on the species.

  • Research Products

    (6 results)

All Other

All Publications (6 results)

  • [Publications] Morita,A.: "Changes in mechanical properties of the cuticle and lipid accumulation in relation to adult diapause in the bean bug, Riptortus clavatus." Journal of Insect Physiology. 45・3. 243-249 (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Shiga,S.: "Localization of the photoreceptor and pacemaker for the circadian activity rhythm in the band-legged ground cricket, Dianemobius nigrofasciatus." Zoological Science. 16・2. (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Morita,A.: "Localization of the photoreceptor for photoperiodism in the stink bug, Plautia crossota stali." Physiological Entomology. 24. (1999)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Morita, A.: "Changes in mechanical properties of the cuticle and lipid accumulation in relation to adult diapause in the bean bug, Riptortus clavatus." Journal of Insect Physiology. 45-3. 243-249 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Shiga, S.: "Localization of the photoreceptor and pacemaker for the circadian activity rhythm in the band-legged ground cricket, Dianemobius nigrofasciatus" Zoological Science. 16-2. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Morita, A.: "Localization of the photoreceptor for photoperiodism in the stink bug, Plautia crossota stali" Physiological Entomology. 24. (1999)

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1999-12-08  

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