Enhancing fish productivity through pen culture: a case study in Sareni wetland of Uttar Pradesh

Alam, Absar; Joshi, K. D.; Das, Shyamal C.; Jha, Dharm Nath; Srivastava, Kalpana; Kumar, Vijay; Bhattacharjya, B. K.

doi:10.21077/ijf.2017.64.special-issue.76184-02

Cited by 9 publications

(7 citation statements)

References 1 publication

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“…The macrophyte growth in pens with IMC was much higher than in pens with grass carp. The growth and survival of carps in pen showed similar trend to growth of carps reported in pens installed in Assam and Uttar Pradesh (Bhattacharjya et al 2015; Alam et al 2017). The comparatively lower growth might be probably due to low temperature regime in the present study, as the aim was to overwinter the seed to release them in the open wetland to utilise primary productivity and achieve compensatory growth in the productive wetland in growing season.…”

Section: Discussionsupporting

confidence: 73%

Integration of pen aquaculture in ecosystem-based enhancement of small-scale fisheries in a macrophyte dominated floodplain wetland of India

Karnatak

Das

Sarkar

et al. 2022

Preprint

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The rapid degradation, overexploitation and encroachment of floodplain wetlands have led to considerable decline in fish diversity and production from these invaluable aquatic resources threatening livelihood of the dependent fishers. The climate change evident in the fast few decades have further aggravated the problem of eutrophication causing water stress, sedimentation leading to rampant macrophyte proliferation affecting ecological and economic functioning of these ecosystems. Macrophyte control and management needs serious attention for sustaining ecosystem services provided by these resources. In this direction pen culture of grass carp, Ctenopharyngodon idella as a biocontrol for macrophytes along with Indian major carps was implemented in a co-management mode in Beledanga, a typical floodplain wetland, a gradually shrinking, macrophyte dominated floodplain wetland in lower Ganga basin. Indian major carps Labeo catla (6.28±0.23g), Labeo rohita (5.1±0.12g), Cirrhinus mrigala (3.5±0.08g) were stocked in the ratio 4:3:3 at the rate of 20 no./m2 in pens (0.1ha each) in triplicate. Grass carp (7.1±0.42g) was stocked in pen at the rate of 20 no./m2. The fishes were fed with pelleted feed twice a day at the rate of 2-3% of body weight per day. The seed was overwintered in pens for a period of 90 days from November 2019-January 2020. Average weight recorded at the end of culture period was 25.13±1.70g, 18.11±0.63g, 14.53±0.87g and 39.20±1.90g in L. catla, L. rohita, C. mrigala and C. idella respectively. The survival of fish ranged from 70 to 81%. Growth performance and feed utilization efficiency of grass carp was significantly higher (p<0.05) compared to other carp species. The pen culture was found to be economically viable with a benefit cost ratio of 1.53. The fishes produced were released back into the open wetland as an input for culture based fisheries. The intervention led to 24% increase in the fish production from the wetland with grass carp contributing 20-22% of the total catch with 32% increase in revenue generated by the sale of fish with in a short span of one year. The study successfully demonstrated technological suitability and economic feasibility of pen culture in this wetland and role of grass carp as a potential biocontrol species for macrophyte management. Grass carp stocked grew to 0.8 to 1kg within 6 month and 2-2.3kg within a year and could utilise 40-45% of the submerged and emergent macrophytes. Integration and optimization of grass carp will not only aid in habitat management of macrophyte-choked wetlands but will also boost their small-scale fisheries by converting standing macrophyte biomass into protein rich fish biomass. The enhanced production will also cater to nutritional and livelihood security of the dependent fishers.

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Section: Discussionsupporting

confidence: 73%

Integration of pen aquaculture in ecosystem-based enhancement of small-scale fisheries in a macrophyte dominated floodplain wetland of India

Karnatak

Das

Sarkar

et al. 2022

Preprint

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“…Among the IMCs, G. catla showed maximum growth in terms of weight gain, average daily growth, and specific growth rate, followed by L. rohita and C. mrigala. The growth of carp in pens was comparable to growth of carp in pens in Assam and Uttar Pradesh (Alam et al, 2017, Bhattacharjya et al, 2015. The survival rate showed a similar trend and ranged from 79% in C. mrigala to 85% in G. catla.…”

Section: Resultsmentioning

confidence: 67%

“…Feed and seed cost formed over 80% of the recurring cost. In-situ raising of carp fingerlings in pens has proven to be technologically feasible and economically viable in wetlands of Uttar Pradesh (Alam et al, 2017), West Bengal (Roy and Hassan, 2013), Assam (Das et al, 2017), and Manipur (Yengkokpam et al, 2019). A B-C ratio of 1.69 was achieved in seed raising of carp in pens at Sareni Jheel, Uttar Pradesh (Alam et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

“…In-situ raising of carp fingerlings in pens has proven to be technologically feasible and economically viable in wetlands of Uttar Pradesh (Alam et al, 2017), West Bengal (Roy and Hassan, 2013), Assam (Das et al, 2017), and Manipur (Yengkokpam et al, 2019). A B-C ratio of 1.69 was achieved in seed raising of carp in pens at Sareni Jheel, Uttar Pradesh (Alam et al, 2017). Similarly, a B-C ratio of 1.53 was achieved by rearing carp fingerlings in pens in other wetlands of Uttar Pradesh (Das et al, 2017).…”

Section: Resultsmentioning

confidence: 99%

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Enhancing adaptive capacity of wetland fishers through pen culture in the face of changing climate: A study from a tropical wetland, India

Karnatak

Sarkar

Puthiyottil

et al. 2021

Aquatic Ecosystem Health &Amp; Management

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Wetlands are among the most productive of all aquatic ecosystems. In developing countries, millions of marginal fishers rely solely on wetlands for security of both nutrition and livelihood. The decline in wetland fisheries owing to anthropogenic and climatic changes has made fishers increasingly vulnerable. Pen culture can be an effective climate-resilient technology for enhancing fish production in shallow, macrophyte-choked, and multi-stake floodplain wetlands, especially in eastern and north-eastern India. In this context, pen culture was implemented as an adaptive measure in a tropical Gangetic wetland (Mathura) to enhance fish production and increase the adaptive capacity of fishers. Indian Major Carps, Gibelion catla, Labeo rohita, and Cirrhinus mrigala of initial size 10.4±.21g, 8.2 ± 0.48g, and 6.5 ± 0.23g respectively, were stocked at the ratio of 4:4:2 and at the rate of 30 fish m-2 each in pens of 100 m2 in duplicate. For purposes of conservation, Labeo bata and Gudusia chapra, 4.3 ± 0.18g and 3.8±.34g initial size, respectively, were stocked at the rate of 20 Nos.m-2 each at the ratio of 1:1. The fish were fed with commercial feed at the rate of 4% of body weight. A net survival of 82%, 87%, and 75% was recorded in Indian Major Carps, L. bata and G. chapra. A production of 380 kg IMC was achieved during 120 days of the culture period. L. bata achieved an average weight of 21.40 ± 0.34g during the 90-day culture period, with a survival rate of 87%. G. chapra attained an average weight of 16.5 ± 0.42g during the culture period, with a recorded survival rate of 75%. G. chapra was observed to spawn in the pen. The water quality inside pens and reference sites did not differ significantly (p >0.05). The produced fish were released in the wetland for fisheries enhancement. The present communication discusses the technological suitability and economic feasibility of adopting climate-resilient pen culture as an adaptation measure for enhancing the adaptive capacity of wetland fishers in the face of a changing climate.

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“…In recent years, anthropogenic activities have become major problems for wetland fish production, as they contain different metallic ions that are harmful for aquatic ecosystems [15]. Information with respect to the pen fish culture in beels is limited, though most of the information on fish species diversity and the livelihood status of beel fisheries is available in Bangladesh and around the world [10,[15][16][17]. However, the culture of fish in the pen system considering metallic ion concentrations in the water has not been documented.…”

Section: Introductionmentioning

confidence: 99%

Heavy Metal Pollution Reduced the Potentiality of Pen Culture in the Wetland Aquaculture in an Urban Area of Bangladesh

et al. 2022

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The Belai beel serves as an important aquatic resource for the livelihood of the local community of the Gazipur district in Bangladesh. However, water pollution in recent times, mainly from industrial wastes and sewage effluents, may disrupt its aquatic environment. Thus, the purpose of the present study was to assess the potential area of pen fish culture in the Belai beel. The study was performed in the Rajbagan (L1), Kamaria (L2) and Rewla (L3) areas of the Belai beel. Grass carp, silver carp, common carp, catla and rui of 20–30 cm in size were stocked at a rate of 15,000 fish/ha and reared for 150 days in pens installed in the L1, L2 and L3 areas, respectively. The fishes were fed with mustard oil cake and rice bran. Maximum fish production was found in Rewla (12.97 ton/ha/150 days) compared to Rajbagan (8.85 ton/ha/150 days) and Kamaria (10.67 ton/ha/150 days) due to it having comparatively good quality water. There were significant differences in metal ion concentrations (p < 0.05) among the three fish pens. In the Rajbagan area, concentrations of Cd and Cu in the water coming from the industrial effluent canal exceeded the acceptable limit. Results indicated that the Rewla area was better than Rajbagan and Kamaria due to it having relatively good quality water for pen fish culture.

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Enhancing fish productivity through pen culture: a case study in Sareni wetland of Uttar Pradesh

Cited by 9 publications

References 1 publication

Integration of pen aquaculture in ecosystem-based enhancement of small-scale fisheries in a macrophyte dominated floodplain wetland of India

Integration of pen aquaculture in ecosystem-based enhancement of small-scale fisheries in a macrophyte dominated floodplain wetland of India

Enhancing adaptive capacity of wetland fishers through pen culture in the face of changing climate: A study from a tropical wetland, India

Heavy Metal Pollution Reduced the Potentiality of Pen Culture in the Wetland Aquaculture in an Urban Area of Bangladesh

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