Hormonal Control of the Orange Coloration of Diapause Pupae in the Swallowtail Butterfly, Papilio xuthus L. (Lepidoptera: Papilionidae)
| Autor: | A. T. M. Fayezul Islam, Hiroshi Imai, Ichiro Kodama, Akira Yamanaka, Miwa Adachi, Katsuhiko Endo, Mitsunobu Komatsu, Chisato Kitazawa |
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| Rok vydání: | 2004 |
| Předmět: |
Cell Extracts
animal structures Papilio xuthus Zoology Orange (colour) Diapause Lepidoptera genitalia Japan Botany Animals Swallowtail butterfly Larva Dose-Response Relationship Drug biology Pigmentation fungi Pupa Brain biology.organism_classification Ganglia Invertebrate Insect Hormones Female Animal Science and Zoology Butterflies Hormone |
| Zdroj: | Zoological Science. 21:1049-1055 |
| ISSN: | 0289-0003 |
| Popis: | Diapause pupae of Papilio xuthus show color polymorphism, represented by diapause-green, orange, and brownish-orange types that are each associated with specific pupation sites. We investigated the role of the site of pupation on the induction of the development of orange types (or brownish-orange types), and the endocrine mechanism underlying the control of color polymorphism in short-day pupae. All short-day larvae of the wandering stage developed into orange or brownish-orange type pupae when they were placed in rough-surfaced containers after gut-purge. Utilizing a pharate pupal ligation between the thorax and abdomen, the endocrine mechanism underlying the control of color polymorphism was shown to involve a head-thorax factor (Orange-Pupa-Inducing Factor: OPIF) that induced orange types in short-day pupae. OPIF was bioassayed using the ligated abdomens of short-day pharate pupae. OPIF was extractable with 2% NaCl solution from 5th-instar larval ganglia complexes following the mesothoracic complex (TG(2,3)-AG(1-7)), but it could not be extracted with either acetone or 80% ethanol solution. OPIF may not exist in the brains of day-0 pupae or in brain-subesophageal ganglion and prothoracic ganglion complexes of 5th-instar larvae. The short-day pharate pupae responded to OPIF in a dose-dependent manner. |
| Databáze: | OpenAIRE |
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