Interaction of Photoperiod, Grouping and Isolation in Female Reproduction ofLymnaea stagnalis
| Autor: | W. P. M. Geraerts, J. Joosse, S. Bohlken |
|---|---|
| Rok vydání: | 1987 |
| Předmět: |
photoperiodism
endocrine system biology Ecology media_common.quotation_subject Environmental factor Lymnaea stagnalis Cell Biology biology.organism_classification medicine.disease_cause Freshwater snail Animal science Hermaphrodite Gastropoda medicine Animal Science and Zoology Reproduction Mollusca Developmental Biology media_common |
| Zdroj: | International Journal of Invertebrate Reproduction and Development. 11:45-57 |
| ISSN: | 0168-8170 |
| Popis: | Summary A study was made of the effects of the photoperiod on female reproductive activities in grouped and isolated specimens of the hermaphrodite freshwater snail Lymnaea stagnalis. Isolation of snails rapidly increased ( 14 days). In comparison with a medium day (MD) (12 hr light/12 hr dark), a long day (LD; 16 hr light/8 hr dark) stimulated egg production whereas a short day (SD) (8 hr light/16 hr dark) lowered egg production. The LD effects were clearer in grouped than in isolated snails, but SD effects were clearer in isolated than in grouped snails. It is argued that the effects of grouping, isolation and photoperiod on egg production are mediated by the neuroendocrine system. It is suggested that the photoperiod plays ... |
| Databáze: | OpenAIRE |
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