Anatomy and Histophysiological Changes in Pituitary of Calotes versicolor During Breeding and Nonbreeding Seasons

Calotes versicolor, collected during peak breeding and nonbreeding season were used for the study of anatomy and histophysiology of pituitary gland. In C. versicolor the pituitary gland is small compact mass attached to the hypothalamus by a delicate stalk. It is of two basic units, adenohypophysis...

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Autores principales:	Malashetty,Vijaykumar B, Sonar,A, Patil,Saraswati B
Lenguaje:	English
Publicado:	Sociedad Chilena de Anatomía 2009
Materias:	Calotes versicolor Pituitary Pars distalis Pars intermedia Pars tuberalis
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000400042
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spelling	oai:scielo:S0717-950220090004000422010-05-18Anatomy and Histophysiological Changes in Pituitary of Calotes versicolor During Breeding and Nonbreeding SeasonsMalashetty,Vijaykumar BSonar,APatil,Saraswati B Calotes versicolor Pituitary Pars distalis Pars intermedia Pars tuberalis Calotes versicolor, collected during peak breeding and nonbreeding season were used for the study of anatomy and histophysiology of pituitary gland. In C. versicolor the pituitary gland is small compact mass attached to the hypothalamus by a delicate stalk. It is of two basic units, adenohypophysis and neurohypophysis. The adenohypophysis includes pars distalis (PD) and pars intermedia (PI). The pars tuberalis (PT) which is usually reduced in reptiles, is absent in C. versicolor. The neurohypophysis is composed of median eminence (MI) and neural lobe or pars nervosa (PN). The anterior PD is rich acidophils than the posterior PD during breeding season. These cells are differentiated as A1 and A2 cells. The A1 cells are erythrosinophilic and stained purple or red and A2 cells stained yellow with orange G. The identified A1 cells are regarded as lactophores and A2 cells are regarded as somatotropes. The secretion of these cells and cell number is reduced during nonbreeding season. The basophils of PD are PAS +, AF + and aniline blue + during breeding season. These cells are classified as B1 and B2 cells depending on their size and location. The large B2 cells are present in cords and B1 cells are located closely to these parts. The B1 and B2 cells are regarded as thyrotrophs and gonadotrophs respectively. During nonbreeding these cells show negative response to the above stain. The PI is large and labulated. The cells are AF+, erythrosine and secrete highly granular material during breeding season. During nonbreeding season they become AF-, erythrosine- and less secretory. The secretion present in neurosecretory cells of the neural lobe appears as large granules and they are AF+. These cells take deep blue stain indicating rich neurosecretory material during both breeding and nonbreeding season. The median eminence (MI) is located at the anterior part of neurohypophysis and sends portal capillaries to adenohypophysis.info:eu-repo/semantics/openAccessSociedad Chilena de AnatomíaInternational Journal of Morphology v.27 n.4 20092009-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000400042en10.4067/S0717-95022009000400042
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Calotes versicolor Pituitary Pars distalis Pars intermedia Pars tuberalis
spellingShingle	Calotes versicolor Pituitary Pars distalis Pars intermedia Pars tuberalis Malashetty,Vijaykumar B Sonar,A Patil,Saraswati B Anatomy and Histophysiological Changes in Pituitary of Calotes versicolor During Breeding and Nonbreeding Seasons
description	Calotes versicolor, collected during peak breeding and nonbreeding season were used for the study of anatomy and histophysiology of pituitary gland. In C. versicolor the pituitary gland is small compact mass attached to the hypothalamus by a delicate stalk. It is of two basic units, adenohypophysis and neurohypophysis. The adenohypophysis includes pars distalis (PD) and pars intermedia (PI). The pars tuberalis (PT) which is usually reduced in reptiles, is absent in C. versicolor. The neurohypophysis is composed of median eminence (MI) and neural lobe or pars nervosa (PN). The anterior PD is rich acidophils than the posterior PD during breeding season. These cells are differentiated as A1 and A2 cells. The A1 cells are erythrosinophilic and stained purple or red and A2 cells stained yellow with orange G. The identified A1 cells are regarded as lactophores and A2 cells are regarded as somatotropes. The secretion of these cells and cell number is reduced during nonbreeding season. The basophils of PD are PAS +, AF + and aniline blue + during breeding season. These cells are classified as B1 and B2 cells depending on their size and location. The large B2 cells are present in cords and B1 cells are located closely to these parts. The B1 and B2 cells are regarded as thyrotrophs and gonadotrophs respectively. During nonbreeding these cells show negative response to the above stain. The PI is large and labulated. The cells are AF+, erythrosine and secrete highly granular material during breeding season. During nonbreeding season they become AF-, erythrosine- and less secretory. The secretion present in neurosecretory cells of the neural lobe appears as large granules and they are AF+. These cells take deep blue stain indicating rich neurosecretory material during both breeding and nonbreeding season. The median eminence (MI) is located at the anterior part of neurohypophysis and sends portal capillaries to adenohypophysis.
author	Malashetty,Vijaykumar B Sonar,A Patil,Saraswati B
author_facet	Malashetty,Vijaykumar B Sonar,A Patil,Saraswati B
author_sort	Malashetty,Vijaykumar B
title	Anatomy and Histophysiological Changes in Pituitary of Calotes versicolor During Breeding and Nonbreeding Seasons
title_short	Anatomy and Histophysiological Changes in Pituitary of Calotes versicolor During Breeding and Nonbreeding Seasons
title_full	Anatomy and Histophysiological Changes in Pituitary of Calotes versicolor During Breeding and Nonbreeding Seasons
title_fullStr	Anatomy and Histophysiological Changes in Pituitary of Calotes versicolor During Breeding and Nonbreeding Seasons
title_full_unstemmed	Anatomy and Histophysiological Changes in Pituitary of Calotes versicolor During Breeding and Nonbreeding Seasons
title_sort	anatomy and histophysiological changes in pituitary of calotes versicolor during breeding and nonbreeding seasons
publisher	Sociedad Chilena de Anatomía
publishDate	2009
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000400042
work_keys_str_mv	AT malashettyvijaykumarb anatomyandhistophysiologicalchangesinpituitaryofcalotesversicolorduringbreedingandnonbreedingseasons AT sonara anatomyandhistophysiologicalchangesinpituitaryofcalotesversicolorduringbreedingandnonbreedingseasons AT patilsaraswatib anatomyandhistophysiologicalchangesinpituitaryofcalotesversicolorduringbreedingandnonbreedingseasons
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Anatomy and Histophysiological Changes in Pituitary of Calotes versicolor During Breeding and Nonbreeding Seasons

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