Glycogen and galactogen in the albumen gland of the freshwater snail Lymnaea stagnalis: Effects of egg laying, photoperiod and starvation
| Autor: | Theodorus C.M. Wijsman |
|---|---|
| Rok vydání: | 1989 |
| Předmět: |
chemistry.chemical_classification
photoperiodism endocrine system medicine.medical_specialty Glycogen media_common.quotation_subject Lymnaea stagnalis General Medicine Carbohydrate Biology biology.organism_classification Polysaccharide Freshwater snail chemistry.chemical_compound Endocrinology chemistry Internal medicine medicine Reproduction Mollusca media_common |
| Zdroj: | Comparative Biochemistry and Physiology Part A: Physiology. 92:53-59 |
| ISSN: | 0300-9629 |
| DOI: | 10.1016/0300-9629(89)90740-8 |
| Popis: | 1. 1. Glycogen and galactogen contents of the albumen gland of the freshwater snail Lymnaea stagnalis were determined under different conditions, known to influence these polysaccharides viz egg laying, photoperiod and starvation. 2. 2. After oviposition, the galactogen content is restored within 32 hr, whereas glycogen remains constant during this period. Short-day photoperiods favour accumulation, long-day photoperiods induce depletion of glycogen. In contrast, the galactogen content is not affected by the photoperiod. 3. 3. Since glycogen and galactogen are present in the same cells of the albumen gland, the independent variation of these polysaccharides would imply the presence of separate intracellular regulation mechanisms. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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