Journal of Parasitic Diseases

, Volume 42, Issue 4, pp 559–569 | Cite as

Prevalence, site and tissue preference of myxozoan parasites infecting gills of cultured fingerlings of Indian major carps in District Fatehgarh Sahib, Punjab (India)

  • Ishtiyaq Ahmad
  • Harpreet KaurEmail author
Original Article


A study was undertaken to investigate the prevalence rate, site preference and extent of damage caused by myxosporidian parasites in Punjab, India. During the 6 months study, 600 carp fingerlings belonging to 4 genera i.e. Labeo rohita Hamilton, Cirrhinus mrigala Hamilton, Catla catla Thail and Carassius carassius were randomly collected from the polyculture nursery ponds located in different villages District Fatehgarh Sahib, Punjab. Organs such as fins, scales, gills, intestine, kidney, and eye-ball were examined for the presence of myxozoan parasites. In this study, gills of 321 (53.50%) were found to be infected with as many as 10 species of myxosporean parasites belonging to the genus Myxobolus. Gills were examined for the presence of plasmodia and infected organs were processed for histology. The gill plasmodial index (GPI) was counted for all the 10 species and this revealed a mild to severe infection was recorded. M. knobii, M. majraiensis, M. markiwi, M. naini, M. rocatlae, M. vascularis and M. venkateshi formed intralamellar vascular type of plasmodia (LV1), M. nanokiensis formed (LV3) and M. potularis and M. slendrii formed intrafilamental type of plasmodium (FV2). Out of 231 infected fishes, mixed infection was recorded in 44 fishes (13.70%), which exhibited biparasitism and polyparasitism. No infection was recorded in exotic carp i.e. C. carassius. Physicochemical parameters of water were also recorded for the period of 6 months comprising 4 months of winter and 2 months of spring. The present study indicated that the prevalence of myxozoan parasite was 43% in November (24.0 °C) and increased to 54% with the decrease in temperature (22.65 °C).


Fingerlings Myxobolus Gills Water parameters GPI Histology Punjab 



The authors acknowledge the facilities provided by Instrumentation lab Punjabi University, Patiala. Financial support for this study was provided by UGC-CAS grant Department of Zoology, Panjab University, Chandigarh.

Compliance with ethical standards

Conflict of interest

There is no conflict of interest to disclose.

Ethical approval

Not required as per the guidelines of Committee for the Purpose of Control and Supervision of Experiments on Animals (CPCSEA), because we are dealing with fish samples and the chemicals we are using are not harmful to the environment.


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Copyright information

© Indian Society for Parasitology 2018

Authors and Affiliations

  1. 1.Department of Zoology and Environmental SciencesPunjabi UniversityPatialaIndia
  2. 2.Department of ZoologyPanjab UniversityChandigarhIndia

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