1
|
Nadia ZM, Baten MA, Roy P, Saha N, Habib KA, Mahfuj S, Kamrujjaman M, Rashed M. River pattern influences the composition of small indigenous species (SIS) of fish in deltaic Rajbari district, Bangladesh. Heliyon 2024; 10:e26575. [PMID: 38434058 PMCID: PMC10906390 DOI: 10.1016/j.heliyon.2024.e26575] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 02/12/2024] [Accepted: 02/15/2024] [Indexed: 03/05/2024] Open
Abstract
Bangladesh is endowed with diverse rivers providing huge ecosystem services, but the diversity status and the abundance of the small indigenous species (SIS) are not identical in all rivers due to the natural water flow regime and anthropogenic challenges. Therefore, the present study endeavors to elucidate the composition and conservation status of SIS fish from four rivers namely, the Padma, the Gorai, the Chandana and the Horai rivers of Rajbari District, Bangladesh. Data were meticulously collected through fish sampling in each season, field observations, focus group discussions, and individual interviews by using a semi-structured questionnaire spanning from May 2021 and April 2022. The number of SIS in the Padma, the Gorai, the Chandana and the Horai rivers of Rajbari were 60, 36, 33 and 26, respectively, whereas a predominant concentration of fishes was notably observed in the benthopelagic zone of these rivers. Among the 60 riverine SIS, 23 fish were common in the four rivers. Additionally, Cyprinidae (>30%) was observed to be the most abundant SIS in the studied rivers. The fishermen in the research area used seven major fishing equipment of which cast nets are the most common for catching fish species. The abundance of SIS during the rainy season was the highest for all the studied rivers than the other seasons and 12 SIS were available throughout the year. Notably, the least concerned SIS outnumbered the other categories whereas, more than 10% was under the vulnerable category in the four rivers. The leading threats to the fish diversity were pollution followed by illegal and overfishing, siltation, reduced depth, degeneration of rivers and others. Consequently, to safeguard the existing SIS, reducing human pressure, implementing fishing regulations strictly, establishing and administering fish sanctuaries, and raising public awareness can be helpful for the sustainability of aquatic resources in deltaic areas.
Collapse
Affiliation(s)
- Zubyda Mushtari Nadia
- Department of Aquatic Animal Health Management, Sher-e-Bangla Agricultural University, Dhaka, 1207, Bangladesh
| | - Md. Abdul Baten
- Department of Fishing and Post Harvest Technology, Sher-e-Bangla Agricultural University, Dhaka, 1207, Bangladesh
| | - Prosun Roy
- Department of Aquaculture, Bangladesh Agricultural University, Mymensingh, 2202, Bangladesh
| | - Newton Saha
- Department of Fisheries Management, Patuakhali Science and Technology University, Dumki, Patuakhali, 8602, Bangladesh
| | - Kazi Ahsan Habib
- Department of Fisheries Biology and Genetics, Sher-e-Bangla Agricultural University, Dhaka, 1207, Bangladesh
| | - Sarower Mahfuj
- Department of Fisheries and Marine Bioscience, Jashore University of Science and Technology, Jashore, 7408, Bangladesh
| | | | - Mohammad Rashed
- Department of Fisheries Biology and Genetics, Sher-e-Bangla Agricultural University, Dhaka, 1207, Bangladesh
| |
Collapse
|
2
|
Li A, Wang J, Zhang X, Kou R, Chen M, Zhang B, Liu J, Peng B, Zhang Y, Wang S. Cold-Brewed Jasmine Tea Attenuates High-Fat Diet-Induced Obesity and Gut Microbial Dysbiosis. Nutrients 2022; 14:nu14245359. [PMID: 36558518 PMCID: PMC9784320 DOI: 10.3390/nu14245359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 12/13/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
Cold-brewed jasmine tea (CB-JT) is regarded to possess characteristic flavors and health benefits as a novel resource of functional tea beverages. To investigate the molecular mechanisms underlying CB-JT-mediated protective effects on obesity, we evaluated the serum biochemistry, histological condition, glucose tolerance, gene expression profile and intestinal microbial diversity in high-fat diet (HFD)-fed mice. Our results demonstrate that cold-brewed jasmine tea can significantly attenuate HFD-induced body weight gain, abnormal serum lipid levels, fat deposition, hepatic injury, inflammatory processes as well as metabolic endotoxemia. CB-JT also modified the microbial community composition in HFD-fed mice and altered the balance to one closely resembled that of the control group. The differential abundance of core microbes in obese mice was reversed by CB-JT treatment, including an increment in the abundance of Blautia, Mucispirillum, and Bilophila as well as a decrease in the abundance of Alloprevotella. CB-JT was proved to regulate the mRNA expression levels of lipid metabolism-related genes such as Leptin, Pgc1a Il6, and Il1b in the adipose tissue coupled with Cyp7a1, Lxra, Srebp1c, and Atgl in the liver. These findings indicate that cold-brewed jasmine tea might be served as a potential functional tea beverage to prevent obesity and gut microbiota dysbiosis.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | | | | | - Shuo Wang
- Correspondence: ; Tel.: +86-22-8535-8445
| |
Collapse
|
3
|
Environmental Drivers of Fish Community Structure in An Open Wetland of Brahmaputra Basin, India. NATIONAL ACADEMY SCIENCE LETTERS 2022. [DOI: 10.1007/s40009-022-01178-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
4
|
Narangoda CNK, Dangalle CD, Amarathunga D. Selected freshwater fish species for assessing the water quality of the lower catchment of the Kelani River, Sri Lanka. ENVIRONMENTAL MONITORING AND ASSESSMENT 2022; 194:650. [PMID: 35931827 DOI: 10.1007/s10661-022-10319-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
Kelani River is the most polluted river in Sri Lanka and the lower catchment is more polluted than the upper catchment. In the present study, freshwater fish species of the lower catchment of the river were investigated for the use of assessing the water quality. Cast net sampling and identification recorded 34 freshwater fish species from the lower catchment, the majority represented by family Cyprinidae. Fish species richness, diversity indices, distribution, abundance and the regression analysis of fish species with water quality parameters revealed high sensitivity and tolerance of three fish species with certain water quality parameters. Dawkinsia singhala was tolerant to the fluctuations of the chemical parameters of the water, while Rasbora daniconius and Pethia reval were tolerant to the physical parameters. Positive correlations were evident between the ammonium and phosphate concentrations of the water and distribution and abundance of D. singhala, while R. daniconius and P. reval showed positive correlations with turbidity of water and pH value respectively. Furthermore, the study reveals that D. singhala is more suitable for predicting the water quality of urban and peri-urban locations of the river, while P. reval and R. daniconius are more suitable for assessing the water quality of rural locations. Thus, the present study reveals a strong possibility of using D. singhala, R. daniconius and P. reval, as biological indicators for assessing the variation of water quality of the lower catchment of the Kelani River. However, despite the fact that such a study has been conducted for the first time in Sri Lanka, it is restrained by certain limitations, and seasonal variations of water quality parameters with fish parameters, adaptations inherent to fish species and food availability in different locations combined with long-term monitoring of fish assemblages have not been considered. Future studies investigating these aspects will further enhance the value of the study.
Collapse
Affiliation(s)
- Chandima N K Narangoda
- Department of Zoology and Environment Science, Faculty of Science, University of Colombo, Colombo 03, 00300, Sri Lanka
- Environmental Studies Division, National Aquatic Resources Research and Development Agency, Crow Island, Colombo 15, 01500, Sri Lanka
| | - Chandima D Dangalle
- Department of Zoology and Environment Science, Faculty of Science, University of Colombo, Colombo 03, 00300, Sri Lanka.
| | - Deeptha Amarathunga
- Environmental Studies Division, National Aquatic Resources Research and Development Agency, Crow Island, Colombo 15, 01500, Sri Lanka
| |
Collapse
|
5
|
Zare-Shahraki M, Ebrahimi-Dorche E, Bruder A, Flotemersch J, Blocksom K, Bănăduc D. Fish Species Composition, Distribution and Community Structure in Relation to Environmental Variation in a Semi-Arid Mountainous River Basin, Iran. WATER 2022; 14:1-25. [PMID: 36644211 PMCID: PMC9836396 DOI: 10.3390/w14142226] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
We analyzed spatial variation in fish species richness and community composition in the Karun River basin, Iran. Knowledge about fish diversity in the basin is incomplete and varies widely along spatial and temporal scales: The Karun is the longest river in Iran (950 km) with the largest drainage area (about 67,000 km2). Fish samples were collected from 54 sites from July through August 2019 using a backpack electro-fisher. Physico-chemical and habitat parameter data collected at each site included pH, conductivity (μS/cm), dissolved oxygen (mg/L), water temperature (°C), turbidity (NTU), stream width (m), stream depth (m), water velocity (m/s) and elevation (m). In total, 37 species were collected (5241 individuals weighing 110.67 kg). The species collected represented 12 families and 27 genera. A total of 13 endemic species (35.14%), 16 native species (43.24%), and eight non-native species (21.62%) were recorded. Diversity indices were calculated and used to measure the spatial variation in community composition. Relationships between native and endemic species assemblage structure and environmental descriptors were assessed using canonical correspondence analysis (CCA). The first two axes of the canonical correspondence analysis explained 62.57% of the variation in the data. Of the nine environmental descriptors analyzed, eight significantly affected species distribution; however, electrical conductivity and elevation were most influential. Our study provides up-to-date status information on the distribution of freshwater fishes in the Karun River basin. This information is essential for developing conservation and management strategies to support the long-term sustainability of fish populations in the Karun River basin.
Collapse
Affiliation(s)
- Mojgan Zare-Shahraki
- Department of Natural Resources, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Eisa Ebrahimi-Dorche
- Department of Natural Resources, Isfahan University of Technology, Isfahan 84156-83111, Iran
- Correspondence: (E.E.-D.); (J.F.); or (D.B.)
| | - Andreas Bruder
- Institute of Microbiology, University of Applied Sciences and Arts of Southern Switzerland, 6850 Mendrisio, Switzerland
| | - Joseph Flotemersch
- Office of Research and Development, United States Environmental Protection Agency, Washington, DC 20460, USA
- Correspondence: (E.E.-D.); (J.F.); or (D.B.)
| | - Karen Blocksom
- National Health and Environmental Effects Research, United States Environmental Protection Agency, Corvallis, OR 97333, USA
| | - Doru Bănăduc
- Applied Ecology Research Center, Lucian Blaga University of Sibiu, European Union, 550012 Sibiu, Romania
- Correspondence: (E.E.-D.); (J.F.); or (D.B.)
| |
Collapse
|
6
|
Reduced physiological plasticity in a fish adapted to stable temperatures. Proc Natl Acad Sci U S A 2022; 119:e2201919119. [PMID: 35617428 DOI: 10.1073/pnas.2201919119] [Citation(s) in RCA: 38] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Significance Plastic individuals can buffer environmental changes, maintaining a stable performance across gradients. Plasticity is therefore thought to be particularly beneficial for the survival of wild populations that experience large environmental fluctuations, such as diel and seasonal temperature changes. Maintaining plasticity is widely assumed to be costly; however, empirical evidence demonstrating this cost is scarce. Here, we predict that if plasticity is costly, it would be readily lost in a stable environment, such as a laboratory. To test this, we measured a diverse range of phenotypic traits, spanning gene expression, physiology, and behavior, in wild and laboratory zebrafish acclimated to 15 temperatures. We show that laboratory fish have lost plasticity in many traits, demonstrating that maintaining plasticity carries a cost.
Collapse
|