Presence of [His7]- corazonin in the central nervous system of a newly isolated albino strain of Schistocerca gregaria (Orthoptera: Acrididae) - mass spectrometric and immunocytochemical evidence
Autor: | Liliane Schoofs, Michael Breuer, Mazibur M. Rahman, Arnold De Loof, Geert Baggerman |
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Rok vydání: | 2003 |
Předmět: |
medicine.medical_specialty
Immunocytochemistry neuropeptides Neuropeptide albinism Migratory locust Biology biology.organism_classification Molecular biology Acrididae Melanin Corazonin immunocytochemistry Endocrinology locusts QL1-991 Insect Science Internal medicine medicine Schistocerca [his7]-corazonin schistocerca gregaria Zoology mass spectrometry Cuticle (hair) |
Zdroj: | European Journal of Entomology, Vol 100, Iss 3, Pp 455-458 (2003) |
ISSN: | 1802-8829 1210-5759 |
Popis: | An inbred strain of a newly isolated spontaneous albino mutant of Schistocerca gregaria (Forsk.) was examined for the presence of the neuropeptide [His7]-corazonin by immunocytochemical and mass spectrometric methods. It was concluded that this peptide is definitely present in a limited number of neurosecretory cells in the pars lateralis as well as in the corpora cardiaca (CC). Injection of either synthetic [His7]-corazonin or of extracts of CC of the normal coloured phenotype of S. gregaria failed to induce darkening of the cuticle, while albino Locusta migratoria, used as a positive control, turned dark. The conclusion is that the cause of albinism in the new S. gregaria albino is probably due to a defect in the receptor system for [His7]-corazonin or in the biosynthetic pathway of melanin. |
Databáze: | OpenAIRE |
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