Temporal distribution of fishery resources in Payra River: relationship with climatological changes, ecological assessment, and threat assessment

Rahat, Md. Asikur Rahaman; Roy, Nitai; Manon, Md. Rased Khan; Ullah, Md. Rahamat; Islam, M. M. Majedul; Rashid, Md. Tareq; Hasan, Khandakar Rakibul; Chakma, Suprakash; Rahman, Md. Arifur

doi:10.1016/j.heliyon.2022.e10584

Cited by 6 publications

(8 citation statements)

References 33 publications

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“…Fish biodiversity and fish habitats are declining in the Haor region and the nearby beels due to a variety of human and natural factors, generating major concern for the sustainability of fish biodiversity. Overfishing by illegal and lethal gears, which damaged the breeding, feeding and nursery ground of the indigenous fish of the haor ecosystem, are to blame for the loss of species diversity in the studied Haor [ 74 ]. The widespread application of poisonous pesticides on the farms bordering wetland areas has also led to catastrophic water pollution in these areas.The most significant anthropogenic impact reducing species diversity in the Mithamoin Haor is the unplanned construction of dams, embankments, roads, and bridges, which isolate the shallow water section from the deeper portion of wetland and nearby rivers.…”

Section: Discussionmentioning

confidence: 99%

Temporal distribution of plankton and fish species at Mithamoin Haor: Abundance, composition, biomass and ecosystem based management approach

Nahiduzzaman,

Karim,

Nisheeth

et al. 2023

Heliyon

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Section: Discussionmentioning

confidence: 99%

Temporal distribution of plankton and fish species at Mithamoin Haor: Abundance, composition, biomass and ecosystem based management approach

Nahiduzzaman,

Karim,

Nisheeth

et al. 2023

Heliyon

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“…Chao1 index is used to estimate the number of OTUs in a community, which can reflect the total number of species in an ecosystem [2]. In this study, the Chao1 index ranges from 1002.53 to 1201.55, respectively, with large differences among samples, especially in sites 5 and 6.…”

Section: Analysis Of Alpha and Beta Diversity Of Fish In Wanlv Lakementioning

confidence: 98%

“…Fish are an important embodiment and undertaker of the ecological environment of water bodies, and fish diversity is a key indicator for monitoring the health of aquatic ecosystems [1]. Fish communities have been widely used as biological indicators to quantify and assess the degree of degradation and health status of rivers and streams [2]. Accurate assessment of fish species diversity and community composition is essential for understanding fish ecology and conservation management [3].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Fish Species in Wanlv Lake, the Largest Drinking Water Source in South China, by Environmental DNA Metabarcoding Technology

Wu,

Fu,

Zhou

et al. 2024

Fishes

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As the largest lake in South China, Wanlv Lake is also an important drinking water source for Guangdong and Hong Kong and is responsible for water supplying of more than 40 million people in the Guangdong-Hong Kong-Macao Greater Bay Area. The study of fish diversity in Wanlv Lake can help us to effectively understand the changes and states of its aquatic ecosystem and provide scientific basis for natural ecological protection, biodiversity, sustainable use and scientific management of fishery resources. However, research on the lake’s fish is scarce. The high throughput environmental DNA metabarcoding technology (eDNA technology) of the mitochondrial 12S rRNA gene sequence was herein used to conduct a preliminary exploration of Wanlv Lake fish diversity. A total of 10 sampling sites were set up to monitor fish diversity and analyze the composition and richness of the species. The results revealed a total of 83 genera in 42 families and 17 orders of fish in the lake, with the highest proportion found in Cypriniformes (38 species), accounting for 45.24% of the total. Five alien species and eight rare and endangered species were also detected. The proportion of invasive species was 5.95%, and the combined proportion of rare and endangered species was 9.52%. The results indicated that Wanlv Lake serves as an important drinking water source, and overall, the condition of fish is satisfactory. However, proactive measures should be implemented to control the overpopulation of invasive species, as their unchecked proliferation may lead to a decline in species abundance, particularly among endangered species. This was the first overall assessment report on fish of the Wanlv Lake via 12S rRNA; the results herein lay a foundation for water quality assessment of Wanlv Lake as a drinking water source.

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“…This shift is attributed to the decline and degradation of these resources, prompting aquaculture to emerge as the predominant source [2]. However, recent years have witnessed a decline in aquatic biodiversity, particularly fish species and other aquatic organisms in inland open water, influenced by both natural and anthropological factors [79][80][81]. Recognizing this decline, a paramount focus is now placed on enhanced biological management practices to curb resource degradation and bolster sustainable production in the Mirsharai region.…”

Section: Present Scenario Of Fishers' Community and Major Captured Fi...mentioning

confidence: 99%

Current State and Future Potential of Fisheries in the Mirsharai Coastal Areas of Chattogram for Enhancing Bangladesh’s Blue Economy

Mondal,

Siddiqui,

Rani

et al. 2024

AJRiZ

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Aims: This study aims to comprehensively assess the fisheries resources in the Mirsharai coastal area of Chattogram district, focusing on their contribution to both local and national economies. The research seeks to identify challenges and vulnerabilities, particularly those arising from climate change, impacting pond owners, fish farmers, hatchery owners, and nursery owners in the region. Study Design: The study adopts a cross-sectional design, employing field surveys and interviews to collect data on fish production, and challenges faced by stakeholders. The cross-sectional approach allows for a holistic understanding of the current state of fisheries resources and their interactions with climatic factors. Place and Duration of Study: The research was conducted in Mirsharai, a coastal upazila of Chattogram district, Bangladesh. The study encompasses data collected during the January to December 2016, providing insights into the dynamics of fish production, and challenges faced by fisheries stakeholders in Mirsharai. Methodology: Field surveys were conducted to gather quantitative data on fish production from both capture and culture fisheries. Additionally, interviews with pond owners, fish farmers, hatchery owners, and nursery owners were conducted to qualitatively assess the impact of challenges faced by fisheries stakeholders in Mirsharai on their operations and economic well-being. The combination of quantitative and qualitative methods ensures a comprehensive analysis. Results: The average fish production in capture fisheries was determined to be 63 kg/ha, while culture fisheries, specifically pond aquaculture, yield an average of 1656 kg/ha. The results highlight the significant impact of challenges faced by fisheries stakeholders in Mirsharai on the local fisheries sector, revealing challenges related to market timing, post-larvae availability, and pricing that affect the economic sustainability of stakeholders. Conclusion: The findings underscore the vulnerability of Mirsharai's fisheries to challenges faced by fisheries stakeholders in Mirsharai, emphasizing economic losses for fish farmers, hatchery owners, and nursery owners. The conclusion calls for urgent adaptive measures and climate-resilient strategies in the fisheries sector to ensure sustainability and viability in the face of evolving climatic conditions. Implication: This study has implications for fisheries management and policy development, emphasizing the need for proactive measures to address climate-induced challenges and sustain the economic well-being of fisheries stakeholders in the Mirsharai coastal area.

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Temporal distribution of fishery resources in Payra River: relationship with climatological changes, ecological assessment, and threat assessment

Cited by 6 publications

References 33 publications

Temporal distribution of plankton and fish species at Mithamoin Haor: Abundance, composition, biomass and ecosystem based management approach

Temporal distribution of plankton and fish species at Mithamoin Haor: Abundance, composition, biomass and ecosystem based management approach

Assessment of Fish Species in Wanlv Lake, the Largest Drinking Water Source in South China, by Environmental DNA Metabarcoding Technology

Current State and Future Potential of Fisheries in the Mirsharai Coastal Areas of Chattogram for Enhancing Bangladesh’s Blue Economy

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