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Authors
Affiliations
1 Department of Zoology, P.G.Extension Centre, University of Madras, Fort Campus, Vellore - 632 004, IN
Source
Journal of Endocrinology and Reproduction, Vol 2, No 1&2 (1998), Pagination: 46-53
Abstract
Three types of neurosecretory cells, (A, B & C) were identified in the brain and four types of neurosecretory cells (A, B, C & D) in the thoracic ganglion of P. hydrodromous. Continuous exposure to light for 15 days triggered the secretory activity of the neurosecretory cells and increased the gonadal indices. While saline treatment potentiated the light mediated effect, injection of the eyestalk extract inhibited the effect of light. Results of this preliminary study suggest that eyestalk hormones regulate the effect of light on ovarian development in P. hydrodromous.
Keywords
Eyestalk Extract, Gonadal Index, Light, Neurosecretory Cells, Neurosecretory Material, Paratelphusa hydrodromous.
