Literature DB >> 12545241

Lowering body temperature induces embryonic diapause during prolonged egg retention in the lizard, Calotes versicolor.

Bhagyashri A Shanbhag1, Srinivas K Saidapur, Rajkumar S Radder.   

Abstract

The lizard Calotes versicolor delays oviposition of oviductal eggs for as long as 6 months or more under unfavourable conditions. During this period of prolonged egg retention, the growth of oviductal embryos is arrested at stage 34. The present study shows for the first time among reptiles that the "embryonic diapause" is manifested by the gravid females by lowering their body temperature ( T(b)) by 3-5 degrees C during the period of egg retention by mechanism(s) presently unknown.

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Mesh：

Year:  2002        PMID： 12545241     DOI： 10.1007/s00114-002-0382-3

Source DB:  PubMed          Journal:  Naturwissenschaften        ISSN： 0028-1042


  7 in total

1.  "Costs" of reproduction in reptiles.

Authors:  Richard Shine
Journal:  Oecologia       Date:  1980-07       Impact factor: 3.225

Review 2.  The physiological ecology of reptilian eggs and embryos, and the evolution of viviparity within the class reptilia.

Authors:  G C Packard; C R Tracy; J J Roth
Journal:  Biol Rev Camb Philos Soc       Date:  1977-02

3.  Analysis of the development of the lizard, Calotes versicolor. I. A series of normal stages in the embryonic development.

Authors:  V Muthukkaruppan; P Kanakambika; V Manickavel; K Veeraraghavan
Journal:  J Morphol       Date:  1970-04       Impact factor: 1.804

4.  Plasma progesterone levels and luteal activity during gestation and prolonged oviductal egg retention in a tropical lizard, Calotes versicolor.

Authors:  B A Shanbhag; R S Radder; S K Saidapur
Journal:  Gen Comp Endocrinol       Date:  2001-07       Impact factor: 2.822

5.  Changes in heart rate are important for thermoregulation in the varanid lizard Varanus varius.

Authors:  F Seebacher; G C Grigg
Journal:  J Comp Physiol B       Date:  2001-06       Impact factor: 2.200

6.  Determinants of embryonic stage at oviposition in the lizard Urosaurus ornatus.

Authors:  T Mathies
Journal:  Physiol Biochem Zool       Date:  1999 Nov-Dec       Impact factor: 2.247

7.  The role of K+ channels in colonic Cl- secretion.

Authors:  R Greger; M Bleich; N Riedemann; W van Driessche; D Ecke; R Warth
Journal:  Comp Biochem Physiol A Physiol       Date:  1997-10
  7 in total
  3 in total

1.  Timing of parturition in two species of viviparous lizard: influences of beta-adrenergic stimulation and temperature upon uterine responses to arginine vasotocin (AVT).

Authors:  Natalia Atkins; Susan M Jones; Louis J Guillette
Journal:  J Comp Physiol B       Date:  2006-07-11       Impact factor: 2.200

2.  Factors influencing offspring traits in the oviparous multi-clutched lizard, Calotes versicolor (Agamidae).

Authors:  Rajkumar S Radder; Bhagyashri A Shanbhag
Journal:  J Biosci       Date:  2004-03       Impact factor: 1.826

3.  Extreme plasticity in reproductive biology of an oviparous lizard.

Authors:  Mats Olsson; Lisa Loeb; Willow Lindsay; Erik Wapstra; Luisa Fitzpatrick; Richard Shine
Journal:  Ecol Evol       Date:  2018-06-11       Impact factor: 2.912
  3 in total

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