Skip to content
Research Article Open access CC BY 4.0

Population Dynamics of Gudusia chapra (Hamilton, 1822) from Lake Kaptai, Bangladesh

Md. Atiqul Islam Mondal, Md. Rashed-Un-Nabi, Naina Islam, Md. Matiur Rahman, Mohammad Alamgir Kabir

Asian Journal of Biology · pp. 12–25 · Published 5 Feb 2024

10.9734/ajob/2024/v20i1382

Abstract

Aims: This study aimed to assess the population dynamics of Gudusia chapra in Lake Kaptai, Bangladesh, utilizing FiSAT II software for comprehensive analysis. The key objective was to determine growth parameters, mortality rates, exploitation status, and length-weight relationships to inform policy. Study Design: The study employed a quantitative approach, utilizing length frequency data collected from Lake Kaptai. FiSAT II software facilitated the estimation of population dynamics parameters, employing the Von Bertalanffy growth equation and other relevant analyses. Place and Duration of Study: The research was conducted in Lake Kaptai, Bangladesh, focusing on the intricate aquatic ecosystem from November 2003 to October 2004. Data collection and analysis spanned an extensive duration, providing a robust understanding of the population dynamics of G. chapra. Methodology: FiSAT II software was utilized for population dynamics estimation, with a particular focus on growth parameters, mortality rates, and exploitation status using Von Bertalanffy growth equation. Length-weight relationships were also determined. Recruitment patterns were observed, and key indices, including the growth performance index calculated. Results: The estimated asymptotic length (L∞) and growth coefficient (K) of G. chapra were found to be 19.95 cm and 0.89 year-1 respectively. Natural mortality (M), fishing mortality (F) and total mortality (Z) rates were 1.85, 2.21 and 4.06 year-1 respectively. The exploitation rate (E) indicated overfishing, with a value of 0.54, which exceeded the optimum E (E=0.5). The growth performance index (φ´) of 2.54 was recorded, and the recruitment pattern occurred between April and July. Conclusion: The study concludes that G. chapra in Lake Kaptai is experiencing overfishing, as indicated by the elevated exploitation rate. Understanding the growth parameters and mortality rates is vital for sustainable fisheries management in the region. Implication: The findings have significant implications for fisheries management, highlighting the urgent need for measures to mitigate overfishing of G. chapra in Lake Kaptai. Implementing conservation strategies and monitoring recruitment patterns are crucial for ensuring the long-term sustainability of this important fish species.

Fisheries management aquatic ecosystems Von Bertalanffy growth equation exploitation status fish population assessment

References (21)

  1. 1 Freshwater biodiversity: importance, threats, status and conservation challenges [DOI]
  2. 2 Characteristics, Main Impacts, and Stewardship of Natural and Artificial Freshwater Environments: Consequences for Biodiversity Conservation [DOI]
  3. 3 Nutrient composition of important fish species in Bangladesh and potential contribution to recommended nutrient intakes [DOI]
  4. 4 Defining spatial structure for fishery stock assessment [DOI]
  5. 5 Urban ecosystem services and climate change: a dynamic interplay [DOI]
  6. 6 Scientific Methods to Understand Fish Population Dynamics and Support Sustainable Fisheries Management [DOI]
  7. 7 Impacts of population and fishery spatial structures on fishery stock assessment [DOI]
  8. 8 Shifting gears: Diversification, intensification, and effort increases in small-scale fisheries (1950-2010) [DOI]
  9. 9 Towards vibrant fish populations and sustainable fisheries that benefit all: learning from the last 30 years to inform the next 30 years [DOI]
  10. 10 Water quality of Kaptai reservoir in Chittagong Hill Tracts of Bangladesh [DOI]
  11. 11 Relative importance of population size, fishing pressure and temperature on the spatial distribution of nine Northwest Atlantic groundfish stocks [DOI]
  12. 12 Effect of water parameters on temporal distribution and abundance of zooplankton at Kaptai lake reservoir, Rangamati, Bangladesh [DOI]
  13. 13 An overview on hydro-biology and management of Kaptai Lake Fisheries, Bangladesh [DOI]
  14. 14 Catch Per Unit Effort, Exploitation Level and Production of Hilsa Shad in Bangladesh Waters [DOI]
  15. 15 Managing Fisheries Resources in Kaptai Reservoir, Bangladesh [DOI]
  16. 16 Age, growth and maturity of the Indian Shad, Tenualosa ilisha through otolith examination from different habitats in Bangladesh [DOI]
  17. 17 Clupeids in the kaptai reservoir, a blessing or a curse: estimation of fisheries reference points [DOI]
  18. 18 Fish availability and market channel in Rajbari, Bangladesh [DOI]
  19. 19 Estimation of life history parameters for river catfish Eutropiichthys vacha: insights from multi-models for sustainable management [DOI]
  20. 20 Population Dynamics and Stock Assessment of Gudusia chapra (Hamilton-Buchanan) in the Rajdhala Reservoir, Netrakona, Bangladesh [DOI]
  21. 21 The aquatic environment of Parry Sound, a deep-water embayment complex of Georgian Bay protected from Dreissena [DOI]

Cited by 4

Preliminary Study of Fish Communities in an Estuarine Environment: The Ouladine Lagoon, Côte d'Ivoire

Khévine Robaverge Mahougnon Djogli, Annigbé Justin Eyi, Cossi Irénée Amenoudji, Amien Isaac Amoutchi, Hannah Ukamaka Dennis · Annual Research & Review in Biology · 2024

Modeling Trophic Structure and Ecosystem Functioning of the Small Fish‐Dominated Largest Lake of Bangladesh

D. Mondal, Cheng-Jie Yin, K. Zhao · Ecology and Evolution · 2026

Showing 2 of 4 known citations — external sources report more than can currently be individually listed.

Related research

Article metrics

Real usage data collected on this platform.

42

Page views

0

PDF downloads

3

Outbound clicks

4

Citations

Views over time

Views by country

Approximate, from request IP at view time — not citizenship or institution. Countries with fewer than 5 views are grouped as "Other".

Traffic sources

Referring site, by host.

Views and downloads exclude known bots/crawlers. Citations combines this platform's own DOI-resolved index with each external source's own reported total — see Cited by above for individually listed citing works. Last refreshed 0 seconds ago.