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Published yearly: 

4 Issues


ISSN: 2320-964X (Online) 

ISSN: 2320-7817  (Print)



Dr. Santosh Pawar 




Int. Journal of Life Sciences, 2016; 4(1):71-77 |  Available online, April 11, 2016

Observation on the histochemistry of the developing ova in  Haemonchus contortus (Nematoda)


Jatinderpal Singh 

Department of Zoology, Baring Union Christian College, Batala-143505 ( India)


Received: 08.02.2016   |   Accepted: 08.03.2016   |    Published : 11.04.2016 

In Haemonchus contortus, the concentration of various metabolites differs in various stages of oogenesis. Though an adequate quantity of carbohydrates is evidenced in ovarian epithelium, perinuclear spaces of oogonia, oocytes and rachis but the protoplasmic processes connecting the oogonia to the rachis are completely devoid of the same. Developing oocytes imbibe large concentrations of glycogen from the ovarian epithelium and subsequently use it for the formation of chitinous layer of the egg shell. The mature ovum gets surrounded by an additional resistant layer of acid mucopolysaccarides. High nucleic acid activity has been detected in both oogonia as well as oocytes and fertilized ova show a spurt of ribosomes in them. The secondary oocytes are full of proteinaceous granules and show an intense activity of RNA indicating the occurrence of rapid protein synthesis at this stage. The lipids seem to be a major constituent of the egg shell envelope of the fertilized ova.

Keywords: Histochemistry, oogenesis, egg shell, Nematoda, Haemonchus contortus.


Editor: Dr. Arvind Chavhan


Cite this article as:

Singh Jatinderpal (2016) Observation on the histochemistry of the developing ova in Haemonchus contortus (Nematoda). International J. of Life Sciences, 4(1): 71-77.



The author extends sincere gratitude to Prof. (Dr.) Manjit Johal for her guidance, encouragement and constant support for this research work. The author is also indebted to the Professor and Head, Department of Zoology, Punjabi University, Patiala and Principal, Baring Union Christian College, Batala for providing necessary facilities to carry out the research.


Copyright: © 2016 | Author(s), This is an open access article under the terms of the Creative Commons Attribution-Non-Commercial - No Derivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.







    Origin & Evolution

    Print ISSN : 2320-7817 

    Online ISSN:2320-964X

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