Studies on the Prevalence of Endoparasitic Protozoans of Oligochaetes in the Bankura District of West Bengal

Authors

  • Moumita Sinha
     Department of Zoology, Sidho - Kanho - Birsha University, Purulia Pin: 723104, West Bengal
  • Biplob Kumar Modak
     Department of Zoology, Sidho - Kanho - Birsha University, Purulia Pin: 723104, West Bengal

DOI:

https://doi.org/10.26515/rzsi/v123/i2S/2023/172538

Keywords:

Endoparasite, Monocystis, Earthworm, Oligochaetes, Bankura

Abstract

Endoparasitic aseptate gregarines are commonly found in Annelida, particularly in seminal vesicles of earthworms. An extensive survey has been carried out for aseptate gregarine in earthworms in the Bankura district during the period of January 2022- December 2022. Different genera of host earthworms were studied for occurrence of aseptate gregarines throughout the year. To study the morphology, prevalence and life cycle of these parasites, earthworms were dissected and a small amount of seminal fluid was drawn out on the slide. Then they are fixed in Schaudin’s fixative, stained in Heidenhain’s hematoxylin and studied under the light microscope. During the survey four genera viz. Monocystis Stein, 1848, Nematocystis Hesse, 1909, Stomatophora Drzhevetskii, 1907, Apolocystis Cognetti de Martiis, 1923 are recorded but the prevalence of Monocystis Stein, 1848 and Stomatophora Drzhevetskii 1907, are much higher than the others. These endoparasites reproduce sexually and exhibit mainly three distinct stages viz. trophozoite, gametocyst and oocyst in their lifecycle.

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Published

2023-07-01

How to Cite

Sinha, M., & Modak, B. K. (2023). Studies on the Prevalence of Endoparasitic Protozoans of Oligochaetes in the Bankura District of West Bengal. Records of the Zoological Survey of India, 123(2S), 459–466. https://doi.org/10.26515/rzsi/v123/i2S/2023/172538

Issue

Volume 123, Issue 2S, Special Issue 2023

Section

Articles
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