Stressors Altering the Size and Age of Cirrhinus mrigala (Hamilton, 1822) from the Ghaghara River, India

Dwivedi, Amitabh Chandra

doi:10.19080/ofoaj.2017.04.555642

Cited by 3 publications

(1 citation statement)

References 27 publications

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“…The fishing pressure, mesh size, size of nets and fishing technique (example degree) are responsible for increasing or decreasing of total size of fishes and recruitment in the lotic ecosystems [14,[38][39][40][41][42]. Fishing pressure changes the biodiversity, size composition, growth rate, age composition, sex ratio, income of fisher and maturation [43][44][45]. Non-native fishes are also changed selectivity of gear due to nature, dwelling behavior and ecological condition [28,46,47].…”

Section: Resultsmentioning

confidence: 99%

Health of Stock of Commercially Exploited Non- Native Fish Species, Cyprinus carpio (Linnaeus, 1758) from the Tributary of the Ganga River, Central India

2023

Geol Earth Mar Sci

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The human activities have strongly altered size, age, sex ratio, fecundity, feeding nature and biodiversity of fishes from the freshwater ecosystems over the world especially riverine division. During study period 548 specimens of Cyprinus carpio were collected from February 2019 to January 2020 in fish landing centre at Sirsa from the lower stretch of the Tons River at Prayagraj, Uttar Pradesh, India. The size of fishes varied from 97 to 687 mm (total length). The maximum size of fishes indicated that the stock of C. carpio in the Tons River was in healthy condition. The 251-290 mm size group was most dominated (16.42%) compared to 211-250 mm (14.78%) and 291-330 mm (12.96%) in total exploited stock. The lower size group was maximum exploited with 57.83% from the Tons River at Prayagraj. Higher size group contributed minute proportion with 4.74% in the exploited stock. The exploitation pattern was systematic in all size groups. Current exploitation pattern is systematic and healthy form with environmentally friendly sourcing of food.

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Section: Resultsmentioning

confidence: 99%

Health of Stock of Commercially Exploited Non- Native Fish Species, Cyprinus carpio (Linnaeus, 1758) from the Tributary of the Ganga River, Central India

2023

Geol Earth Mar Sci

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Age structure of non-native fish species, Cyprinus carpio (Linnaeus, 1758) from the tributary of the Ganga river, India

Dwivedi¹

2021

JAMB

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Cyprinus carpio (e.g. culture and wild/capture) constitute a large part of daily meal of human population in Indian sub-continent. It shows benthic and sedentary behavior. Age structure of C. carpio was studied during February 2019 to January 2020 from fish landing centre at Sirsa, Prayagraj, Uttar Pradesh, India. The key scales were studied for estimation of age structure in the present study. A total of 548 fish specimens in length ranges between 97 to 687 mm and age classes of 0+ to 9+ were observed. Age structures were determined for male, female and pooled samples separately. The 1+ age group was most dominating stock with shared 23.53%, 24.64% and 24.09% in case of male, female and pooled samples, respectively. The age group 2+ was second dominating age class and this age class more attracted to fishermen for the exploitation. In case of pooled sample, 1+ age group was also dominated compared to 2+ and 3+ age groups. The old age groups of fishes were shared very minute proportion in the total stock. Present study was also indicated that the female fishes live longer than male from the Tons river at Prayagraj, India.

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Age and growth increment of Labeo calbasu (Hamilton 1822) from the Vindhyan region, Central India

Dwivedi¹,

Nautiyal²

2021

Int J Aquac Fish Sci

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Nepal but also well established in many large natural water bodies [7][8][9][10] and are able to tolerate a wide range of environmental conditions (example temperature, pollution). It is also culture with Indian major caps group fi shes (Catla catla, Labeo rohita and Cirrhinus mrigala) and also exotic major carp fi shes (Ctenopharyngodon idella, Hypophthalmichthys molitrix and Cyprinus carpio) in India, Bangladesh and Pakistan [11][12][13]. It is a bottom feeder in habit with harbivour. Accurate fi sh growth rates are important for growth analysis, age structure analysis and mortality rate estimation. The information of fi sh age and growth increment is also necessary to perceptive a species life history, reproductive biology, population dynamics, biomass and fi sheries sustainability [8,[14][15][16][17][18].Fish are very diverse animals and can be categorized in many ways in form of biology. The age and growth study was conducted by [19] from the Ganga river [20] from the Yamuna river [21] from the Ganga and Yamuna rivers [22] from the Ghaghra river. But nothing is known for the Ken, Paisuni and Tons rivers that are a part of the Ganga river system in the Ganga Plains, India.

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Stressors Altering the Size and Age of Cirrhinus mrigala (Hamilton, 1822) from the Ghaghara River, India

Cited by 3 publications

References 27 publications

Health of Stock of Commercially Exploited Non- Native Fish Species, Cyprinus carpio (Linnaeus, 1758) from the Tributary of the Ganga River, Central India

Health of Stock of Commercially Exploited Non- Native Fish Species, Cyprinus carpio (Linnaeus, 1758) from the Tributary of the Ganga River, Central India

Age structure of non-native fish species, Cyprinus carpio (Linnaeus, 1758) from the tributary of the Ganga river, India

Age and growth increment of Labeo calbasu (Hamilton 1822) from the Vindhyan region, Central India

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