Seasonal variation in thyroid activity of turtle Lissemys punctata with respect to annual cycle of reproduction
Journal Title: Journal of Applied and Natural Science - Year 2010, Vol 2, Issue 2
Abstract
The objective of the present investigation was to study the relationship between thyroid activity and reproductive cycle in turtle Lissemys punctata. The animals were studied in the annual seasonal cycle of reproduction for two consecutive years, which is distinguished into three separate periods namely regenerative, reproductive and recrudescent. The thyroid in L. punctata was observed to be a single pyramid shaped gland, creamy white to reddish-brown in color with lenticular profile. The diameter of the follicle was lowest in regenerative period, which gradually increased in reproductive period attaining maximum size in recrudescent, where as epithelial height was highest in regenerative period, which gradually decreased in reproductive period reaching minimum in recrudescent period. Thyroid activity varies annually in relation to different phases of reproductive periods
Authors and Affiliations
Vidya Chandavar, Prakash Naik
Keywords
Related Articles
- EP ID EP104763
- DOI 10.31018/jans.v2i2.119
- Views 98
- Downloads 0
Effect of bioagent application time against bacterial leaf blight of rice caused by Xanthomonas oryzae pv. oryzae (Uyeda and Ishiyama) Dowson
Present investigation was carried out to test the effect of time of application on efficacy of Trichoderma harzianum and Pseudomonas fluorescens formulations against bacterial leaf blight of rice, under field condition....
Effect of climate change in Meghalaya as perceived by the scientists of Krishi Vigyan Kendra, Meghalaya, India
A study was conducted to assess the adverse effect of climate change as perceived by the scientists of Krishi Vigyan Kendra,Megahlaya. Data were collected from 25 scientists by questionnaire method in the month of Octobe...
Comparative cost and returns of tractor owned and hired farms in Tungabhadra project (TBP) area of Karnataka, India
Mechanization saves time in completing different operations, which gives the crop more time to mature, allows the farmer to be more flexible in his farming operations and facilitates multi cropping. At present in India,...
Fungicidal effect of some non-conventional chemicals for management of alternaria blight disease of mustard.
Alternaria blight disease of mustard caused by a necrotrophic fungus Alternaria brassicae (Berk.) Sacc. Is one of the most important limiting factors, causing yield losses of up to 47% in mustard (Brassica juncea). The a...
Evaluation of Ganoderma lucidum strains for the production of bioactive components and their potential use as antimicrobial agents
In the present study, mycelial biomass of Ganoderma lucidum strains was produced in mushroom complete media under optimized culture conditions of temperature, pH, agitation and the fruiting bodies were raised on wheat st...