Potential for productivity improvements by implementing improved management practices in pond polyculture of Indian major carps in Bangladesh

Rahman, Md. Sadique; Kazal, Mohammad Mizanul Haque; Rayhan, Shah Johir; Sujan, Md. Hayder Khan

doi:10.1007/s10499-021-00799-y

Cited by 2 publications

(3 citation statements)

References 34 publications

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“…Researchers found that in the upper Meghna in Bangladesh, there is virtually limited information on carp spawning sites and spawn collection points. Tere are no commercial carp spawn harvesting centers in the upper Meghna River basin, unlike in other river systems [32]. Tis stock's spawning could occur hundreds of miles upstream in India, or it could be so scarce that fry/spawn collectors are not interested.…”

Section: Discussionmentioning

confidence: 99%

“…It has a diverse ecosystem, including swamp forest land that plays a significant role in fsh production and serves as a "Mother fshery" for the country [31]. Eight sampling transects were chosen from incentive areas along the Surma River and Tanguar haor with the help of the Upazila Fisheries Ofce, the fshing community, frequent visits, and previous research study [32] (Figure 1). Tese transects were divided into groups consisting of reference and treatment for the Savar net setting and sample collection (Table 1).…”

Section: Study Area and Designmentioning

confidence: 99%

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Ecological Insights, and Fin Fish Diversity in Carps Spawning Grounds: Case Studies from the Surma River and Tanguar Haor, Bangladesh

Akther,

Hossain,

Mian

et al. 2024

Scientifica

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This study aims to provide a thorough ecological understanding of fin fish diversity within carp spawning grounds in the Surma River and Tanguar haor. Over two spawning seasons, this research investigates ecological factors impacting fin fish diversity and abundance in carp spawning grounds of the Surma River and Tanguar haor, emphasizing water quality, habitat features, spawn availability, and environmental influences. Fish spawn samples were collected with eight “Savar nets” at chosen sites and reared in a fiberglass tank at the mini hatchery for species identification. The representative spawn samples were examined under a microscope for preliminary species identification before rearing. The study found that both the Surma River and Tanguar haor offer ideal conditions for carp spawning due to factors such as water quality, natural food availability, habitat suitability, and favorable climatic conditions. The study identified 39 fish species under the 10 fish groups from both locations, with a higher percentage of carp species (31.42%) in the Surma River in 2021 compared to 2022 (22.50%). In Tanguar haor, the percentage of carp species was 7.55% and 6.50% in 2021 and 2022, respectively. The Surma River’s ecological indices (2021-2022) indicated decreased diversity, likely due to environmental degradation, while Tanguar haor showed lower diversity possibly attributable to multiple environmental stressors. The dominant carp species, Labeo calbasu, Labeo bata, and Labeo gonius, were identified in both the Surma River and Tanguar haor. The spawning distribution varied among different locations, with some sites showing a presence of carp species, such as Hajipur T1 in the Surma River and Alam Duar T2 in Tanguar haor. The findings highlight the importance of hydrological and environmental parameters in shaping carp spawning habitat distribution and abundance, contributing to aquatic biodiversity conservation and resource management.

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Section: Discussionmentioning

confidence: 99%

Section: Study Area and Designmentioning

confidence: 99%

Ecological Insights, and Fin Fish Diversity in Carps Spawning Grounds: Case Studies from the Surma River and Tanguar Haor, Bangladesh

Akther,

Hossain,

Mian

et al. 2024

Scientifica

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“…Family Cyprinidae is most diverse has 84 species and 35 genera, and are the inhabitants of Ganga River channels in North India, Pakistan, Nepal and Burma (Sarma et al, 2017;Sheikh et al, 2017). Major carp breed in the river naturally (Rahman, 2008). Aquatic temperature played an important role in growth and development of major carps (Ashraf et al, 2022;Lavitra et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Effect of Temperature Fluctuation on the Indian Major Carp Labeo rohita and Cirrhinus mrigala Larvae under a Controlled Environment

Azhar

Anjum

Akhter

et al. 2022

Jammu Kashmir J. Agric.

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Major carp i.e., Rohu (Labeo rohita) and Mrigala (Cirrhinus mrigala) are economically very important and commonly cultured in Indian subcontinent. In Pakistan aquatic organisms especially, freshwater species are facing many environmental problems such as variation in weather pattern. Temperature fluctuation is pervasive and most common environmental factor that is very distressing for major carps. The larvae of Labeo rohita and Cirrhinus mrigala were treated with different temperatures 10, 15, 20, 25, 30, 33 and 35 °C following 28 °C acclimation temperature. Thermal variation rate was recorded 2 °C/day. Death rate of both species larvae was observed. In temperature group 10 °C, 15% and 64% mortality of Labeo rohita was observed while, in Cirrhinus mrigala 16% and 66% mortality was recorded at 14 and 10 °C respectively. When larvae of both species were exposed to 10-20 °C, significantly (P < 0.05) maximum death rate was observed at this temperature as compared to other experimental groups. Cumulative death rate of Labeo rohita and Cirrhinus mrigala were recorded 84, 43, 22, 16, 1, 2, 3% and 86, 45, 23, 17, 1, 2, 4% in 10, 15, 20, 25, 30, 33, 35 °C temperature groups, respectively. All larvae of both species died within 2 days at temperature group 10 °C and continued to die at temperature groups 15 °C and 20 °C up to 11 days. Both species larval mortality persisted in temperature groups at 25 °C up to 18 days. Simple regression analysis was applied for thermal range (T < 28 °C and T > 28 °C), variation in death per fall and elevation of ∆T = 1 °C was measured in the log-linear regression model framework. When water temperature dropped from acclimation temperature 28 °C, the accumulative death of larvae for 1 °C decrease of temperature from acclimation one, significantly (P < 0.05) was calculated in both species. When water temperature elevated from 28 °C, less steep beta coefficient was observed in Labeo rohita and Cirrhinus mrigala. 1 °C elevation of water temperature from acclimation temperature 28 °C, the accumulative death in Labeo rohita and Cirrhinus mrigala were (P > 0.05) obtained

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Potential for productivity improvements by implementing improved management practices in pond polyculture of Indian major carps in Bangladesh

Cited by 2 publications

References 34 publications

Ecological Insights, and Fin Fish Diversity in Carps Spawning Grounds: Case Studies from the Surma River and Tanguar Haor, Bangladesh

Ecological Insights, and Fin Fish Diversity in Carps Spawning Grounds: Case Studies from the Surma River and Tanguar Haor, Bangladesh

Effect of Temperature Fluctuation on the Indian Major Carp Labeo rohita and Cirrhinus mrigala Larvae under a Controlled Environment

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