Population Dynamics and Infection Patterns of Pallisentis in Channa punctata from Muzaffarpur District, Bihar, India

Authors

  • Dr. Jitendra Rajak Professor, Principal, Nalanda Mahila College, Biharsharif, Nalanda, Bihar. INDIA.
  • Surendra Kumar Professor, Department of Zoology, Maa Shakumbhari University, Punwarka, Saharanpur, Uttar Pradesh - 247120, INDIA.

DOI:

https://doi.org/10.55544/jrasb.5.3.7

Keywords:

Channa punctata, Pallisentis spp., Prevalence, Population dynamics, Environmental factors, Muzaffarpur District

Abstract

The present study was conducted to investigate the occurrence, prevalence, and population dynamics of Pallisentis spp. infection in Channa punctata collected from Muzaffarpur District, Bihar, India. A total of 180 fish specimens were examined during summer, monsoon, and winter seasons. Intestinal acanthocephalans were recovered, identified, and analyzed using standard epidemiological indices. The overall prevalence of infection was 49.44%, with a mean intensity of 4.22 and mean abundance of 2.17. Seasonal analysis revealed the highest prevalence (63.33%), mean intensity (5.18), abundance (3.28), and infection index (328.11) during the monsoon season, indicating favorable conditions for parasite transmission. Statistical analysis showed significant seasonal (χ² = 8.74, p = 0.013) and size-wise (χ² = 11.64, p = 0.003) variations in infection, whereas sex-wise differences were not significant (χ² = 1.82, p = 0.177). Larger fish (20–25 cm) exhibited higher prevalence and parasite burden than smaller size groups. Environmental parameters such as rainfall, water temperature, dissolved oxygen, and transparency was found to influence infection dynamics, with monsoon conditions favoring parasite establishment and transmission. The study highlights the importance of environmental and host-related factors in regulating Pallisentis spp. infections and provides baseline information for fish health monitoring and sustainable fisheries management in Bihar.

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References

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Published

2026-06-25

How to Cite

Rajak, J., & Kumar, S. (2026). Population Dynamics and Infection Patterns of Pallisentis in Channa punctata from Muzaffarpur District, Bihar, India. Journal for Research in Applied Sciences and Biotechnology, 5(3), 58–62. https://doi.org/10.55544/jrasb.5.3.7

Issue

Vol. 5 No. 3 (2026): June Issue

Section

Articles

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Copyright (c) 2026 Dr. Jitendra Rajak, Surendra Kumar

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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