Study on Present Status of Fish Biodiversity in Wetlands of Sylhet District, Bangladesh

Islam, Mohammed Ariful; Islam, Md Jahidul; Barman, Sanzib Kumar; Morshed, Farjana; Marine, Sabiha Sultana

doi:10.11648/j.aff.20150406.20

Cited by 7 publications

(8 citation statements)

References 6 publications

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“…found a total of 63 fish species in the river of Choto Jamuna at Naogaon district, Bangladesh. Islam et al (2015c) recorded 61 species of fishes from the Sibsa River at southwestern part of Bangladesh. Thus, the species diversity of the Juri River is much higher than those rivers.…”

Section: Ichthyofaunal Diversity Statusmentioning

confidence: 99%

Assessment of the ichthyofaunal diversity in the Juri River of Sylhet district, Bangladesh

Islam¹,

Kunda²,

Pandit³

et al. 2019

Arch. Agric. Environ. Sci.

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This study was conducted to assess the present status of ichthyofaunal assemblages in the Juri River of Fenchuganj upazila in Sylhet district, Bangladesh. Survey works were made in three different locations of the river during May to December, 2018 comprising direct fish catch observations, questionnaire interviews, focus group discussions with fishers, fish traders, aratders (wholesalers) and river bank community members, and key informant interviews with upazila fisheries officer, district fisheries officer, non-governmental organization officials, and local leaders. The results revealed that a total of 75 species of fishes under 25 families were available. Among these species 11 were commonly available, 32 were moderately available, 25 were less available, and 7 were rarely available. Cyprinidae was the leading family consisting of 27% of the total fish population of the study area. However, 10 vulnerable, 8 endangered and 1 critically endangered fish species were also found in small amount. During this study the highest number of species (61) was found in the catches in October and lowest number of species (22) was recorded in July. According to the perceptions of fishers and resource person degradation of habitat, climate change, and human activities are the triggering agents for declining ichthyofaunal diversity in this river. Therefore, this study recommends application of proper management measures including community participation to conserve the ichthyofaunal diversity and enhance fish production in the Juri River.

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Section: Ichthyofaunal Diversity Statusmentioning

confidence: 99%

Assessment of the ichthyofaunal diversity in the Juri River of Sylhet district, Bangladesh

Islam¹,

Kunda²,

Pandit³

et al. 2019

Arch. Agric. Environ. Sci.

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“…Similar to our results, Chowdhury et al [ 28 ] categorized 24, 19, 24, 7, and 3 fish species as available, moderately available, rarely available, very rarely available, and extinct, respectively among the 77 fish species under 25 families. Another study in Bangladesh reported that the highest number of fish species was observed from October to December; however, the lowest number of fish species was observed from March to April [ 29 ]. According to Islam et al [ 29 ], out of 54 threatened red-listed fish species by IUCN in Bangladesh, only 30 species were highly visible for the last 20 years, but, currently, 23 species were categorized as only visible.…”

Section: Discussionmentioning

confidence: 99%

“…Another study in Bangladesh reported that the highest number of fish species was observed from October to December; however, the lowest number of fish species was observed from March to April [ 29 ]. According to Islam et al [ 29 ], out of 54 threatened red-listed fish species by IUCN in Bangladesh, only 30 species were highly visible for the last 20 years, but, currently, 23 species were categorized as only visible. Subsequently, a large number of fish species were added to the red list by the IUCN Red List of Bangladesh [ 30 ].…”

Section: Discussionmentioning

confidence: 99%

Changes of Land Use and Land Cover with the Diversity of Fishes, Aquatic Plants, and Bird’s Species at Wetland Ecosystem

Alam

Bhuiyan

Abdullah

et al. 2021

The Scientific World Journal

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Bangladesh is rich in wetland biodiversity with aquatic plants, fishes, and birds. Mohanganj Upazila is known as the capital of lower Bangladesh. The present study focuses on the changes of land use and land cover (LULC) with a diversity of species that are being least concerned (LC), vulnerable (VU), and endangered (EN). Over the last two decades, the wetland species of Mohanganj were gradually declined. Our results showed that 19 fish, 4 aquatic plants, and 7 bird species were LC in 2015. Among the fish and aquatic plant species, 6 fish species (Wallago attu, Ompok pabda, Channa punctate, Chitala chitala, Salmostoma phulo, and Corica soborna) and 2 aquatic plant species (Nymphaea nouchali and Nymphaea lotus) were VU during the dry and rainy season of 2017 and 2019, respectively. In the dry season of 2019, 4 fish species (W. attu, O. pabda, C. punctate, and Ch. chitala), 2 aquatic plant species (N. nouchali and N. lotus), and 7 bird species (Anas platyrhynchos, Ardeola grayii, Gyps bengalensis, Alcedo atthis, Phalacrocorax fuscicollis, Porphyrio porphyria, and Larus ridibundus) were EN. Among the species, W. attu, N. nouchaii, G. bengalensis, P. porphyria, and L. ridibundus were extremely endangered categories. Changes in LULC, the establishment of settlements for the increasing population, indiscriminate use of pesticides, environmental pollutions, and climate change are the potential reasons for declining trends of wetland biodiversity. Stern actions on land use policy, expansion of organic agriculture, bioremediation of industrial effluents, and adoption of sustainable environmental policies should be taken by the Government of Bangladesh for immediate conservation of wetland biodiversity.

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“…Rita rita is a commercially exploited fish species in Bangladesh and is appreciated for its high nutritious value (Mohanty et al, 2015). The natural distribution of this fish species is described from shallow and muddy to clear waters in rivers and wetlands of Bangladesh (Islam et al, 2015;Galib et al, 2016;Sultana et al, 2017;Jewel et al, 2018;Parvez et al, 2019) and in the closer countries (Gupta, 2015;Iqbal et al, 2017b;Muhammad et al, 2019). Nowadays, the populations of R. rita in the riverine ecosystem of Bangladesh are facing the critical threat of extinction due to over-exploitation and loss of breeding grounds (Molla et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Seasonal analysis of food items and feeding habits of endangered riverine catfish Rita rita (Hamilton, 1822)

et al. 2022

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This investigation presents the food and feeding activity of and endangered riverine catfish Rita rita, during February 2017-January 2018. A total of 225 fish individuals was analyzed for stomach contents by characterizing the dominant food items and morphometric features. The results divulged ten major food items consumed, preferably fish scales and eggs, teleost fishes, copepods, cladocerans, rotifers, and mollusks. Total length and body weight of fish varied between 9-34 cm (20.53 ± 6.90 cm) and 10-400 g (9125.94 ± 102.07 g), respectively. The index of relative importance (IRI%) showed the importance of rotifers over the other food items. Morisita’s index of diet overlap indicated seasonal variations in catfish diets with summer and monsoon displaying the least overlap, while maximum overlap during monsoon and winter seasons. The non-metric multidimensional scaling (nMDS) indicated the close association between the food items available during summer and winter seasons with a significant difference among the seasons (ANOSIM, R = 0.638, P = 0.013). Levin’s niche breadth index arranged in the order of 0.88>0.81>0.78>0.63>0.43 for the size classes of V, IV, III, II and I, respectively. The PCA explained 95.39% of the total variance among the food items and fish size groups. Small-sized fish individuals displayed a greater correlation with food items suitable for their mouth size. In conclusion, the variety and frequency of food items recorded indicated considerable feeding plasticity and opportunistic feeding behavior with a shift from carnivorous to omnivorous feeding nature. This study could render useful information on the food and feeding habits of R. rita and provide background for preparing its diet for future aquaculture practices.

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Study on Present Status of Fish Biodiversity in Wetlands of Sylhet District, Bangladesh

Cited by 7 publications

References 6 publications

Assessment of the ichthyofaunal diversity in the Juri River of Sylhet district, Bangladesh

Assessment of the ichthyofaunal diversity in the Juri River of Sylhet district, Bangladesh

Changes of Land Use and Land Cover with the Diversity of Fishes, Aquatic Plants, and Bird’s Species at Wetland Ecosystem

Seasonal analysis of food items and feeding habits of endangered riverine catfish Rita rita (Hamilton, 1822)

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