Reproductive maturation in the slug,Limax maximus, and the effects of artificial photoperiod
| Autor: | Elinor J. McCrone, Phillip G. Sokolove |
|---|---|
| Rok vydání: | 1978 |
| Předmět: |
photoperiodism
medicine.medical_specialty Gonad Physiology Slug Reproductive tract Zoology Biology biology.organism_classification Behavioral Neuroscience medicine.anatomical_structure Endocrinology Natural population growth Hermaphrodite Internal medicine medicine Limax maximus Animal Science and Zoology Endocrine control Ecology Evolution Behavior and Systematics |
| Zdroj: | Journal of Comparative Physiology ? A. 125:317-325 |
| ISSN: | 1432-1351 0340-7594 |
| DOI: | 10.1007/bf00656866 |
| Popis: | Maturation of the reproductive tract ofLimax maximus was studied in a natural population using a reproductive organ-to-body weight index. Male-phase maturation, denoted by enlargement of the hermaphrodite gland (gonad), took place mainly in June and July. Female-phase maturation, signaled by growth of the albumen gland, occurred primarily in September. When slugs were subjected to artificial photoperiods consisting of long (LD 16∶8) or short (LD 8∶16) days, female-phase maturation was not found to be significantly affected by photoperiod (Fig. 4). In contrast, male-phase maturation appeared to be induced by a short-day to long-day transition (Fig. 7). Implications of this finding for normal seasonal maturation are discussed and a maturation sequence involving both photoperiodic and endocrine control mechanisms is suggested. |
| Databáze: | OpenAIRE |
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