## Abstract In this work, we have completed a study of the development of the ovoviviparous lizard __Liolaemus tenuis tenuis__. Ovoviviparity in this lizard is a condition in which eggs are retained within the reproductive duct for about 60 days. During this period the phases of segmentation, gastr
Analysis of the development of the lizard, Calotes versicolor. I. A series of normal stages in the embryonic development
โ Scribed by Vr. Muthukkaruppan; P. Kanakambika; V. Manickavel; K. Veeraraghavan
- Publisher
- John Wiley and Sons
- Year
- 1970
- Tongue
- English
- Weight
- 727 KB
- Volume
- 130
- Category
- Article
- ISSN
- 0362-2525
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โฆ Synopsis
Abstract
It has been shown that the external parameters of eggs of the garden lizard, Calotes versicolor, are not suitable for assessing the exact developmental stages of embryos. In order to make use of this lizard's embryos for experimental work, a series of developmental stages has been characterized, using various morphological features.
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The differentiation and development of the testis in the lizard Calotes versicolor was studied histologically and histoenzymatically from the day of oviposition (stage 27) to 2 months after hatching. The study reveals the appearance of the gonadal component as a genital ridge at stage 27. The first
## Abstract We incubated eggs of __Calotes versicolor__ at four constant temperatures ranging from 24ยฐC to 33ยฐC to assess the effects of incubation temperature on hatching success, embryonic use of energy, and hatchling phenotypes that are likely to affect fitness. All viable eggs increased in mass
This is the second of a series describing normal stages in the development of Rana pipiens. I t s purpose is to afford a method of identifying from sectioned material the stages described in the first communication (Shumway, '40). Typical sections through carefully staged embryos are described brief