Study on age and growth of Indian Major carp (Labeo rohita) from the Ganga River

Dwivedi, Amitabh Chandra; Mayank, Priyanka; Misra, Vipin Kumar; Prakash, Shiva; Mishra, Asheesh Shivam

doi:10.5958/2349-4433.2020.00118.x

Cited by 5 publications

(6 citation statements)

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“…We stocked rohu more in the ponds as it has relatively higher economic value when compared to other two carps (Labh et al, 2014). Moreover, in most aquatic ecosystems, rohu acts as a keystone species (Dwivedi et al, 2020). Test ponds had sailfin catfish (N=80), and the size of the catfish was kept the same (20-30 cm) for both the size classes of IMC.…”

Section: Study Site and Mesocosm Setupmentioning

confidence: 99%

Ecological assessment of the Amazon sailfin catfish (Pterygoplichthysspecies) within the Indian freshwaters: a mesocosm-based approach

Mallick

Hussan

Sundaray

et al. 2023

Preprint

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Amazon sailfin catfish is relatively a recent invader to the open waters of India, and studies on ecological assessment of the species within the Indian freshwaters are lacking. In the present study, to assess the ecological impact of catfish, we established mesocosms mimicking the Indian freshwaters within natural ponds of eastern India using three species of native fish, rohu, catla and mrigal, and for two size classes, small (10-20 cm length) and large (20-30 cm length) native fishes. Mesocosms were maintained with (test) and without the catfish (control), and length and weight of native fish, zooplankton abundance, and several hydrological and soil parameters were measured at a monthly interval for a period of 120-days. The catfish had a significant (P<0.05) negative impact on growth of small-size rohu only. However, we found no significant (P>0.05) differences in abiotic parameters and zooplankton abundance between control and test ponds for the small-size class. We speculate that reduced growth of rohu could be due to competition from catfish in the context of feeding, and not due to modification of abiotic environment. Thus, we emphasize upon the need for behavioral studies to further assess the impact of the catfish.

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Section: Study Site and Mesocosm Setupmentioning

confidence: 99%

Ecological assessment of the Amazon sailfin catfish (Pterygoplichthysspecies) within the Indian freshwaters: a mesocosm-based approach

Mallick

Hussan

Sundaray

et al. 2023

Preprint

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“…In some systems carp may have multiple spawning periods in the same year (Smith & Walker, 2004) We found that male carp are more impacted by KHVD associated morbidity and mortality than females in the carp populations we investigated. Carp populations in similar ecoregions and worldwide have generally been reported to have equal proportions of male and female carp or a higher proportion of males (Devlin, 1999;Dwivedi & Mayank, 2013;Fernndez-Delgado, 1990;Swee & McCrimmon, 1966;Tessema et al, 2020); however, the CyHV-3positive populations surveyed here were female dominated. Acute infections were more common in male fish in Elysian in 2019 and 2020 and dead carp with high CyHV-3 viral loads in 2019 were almost exclusively male.…”

Section: Discussionmentioning

confidence: 65%

Disease ecology and host range of Cyprinid herpesvirus 3 (CyHV‐3) in CyHV‐3 endemic lakes of North America

Tolo

Bajer

Mor

et al. 2023

Journal of Fish Diseases

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Cyprinid herpesvirus‐3 (CyHV‐3) is an important pathogen of common carp (Cyprinus carpio, carp) causing significant economic and ecological impacts worldwide. The recent emergence of CyHV‐3 in the Upper Midwest region of the United States has raised questions related to the disease ecology and host specificity of CyHV‐3 in wild carp populations. To determine the prevalence of CyHV‐3 in wild populations of fishes in Minnesota, we surveyed five lakes in 2019 in which the virus was known to have caused mass mortality events in carp from 2017 to 2018. A total of 28 species (n = 756 total fish) of native fishes and 730 carp were screened for the presence of CyHV‐3 DNA using specific qPCR. None of the native fish tissues tested positive for CyHV‐3 although the prevalence of CyHV‐3 in carp was 10%–50% in the five lakes. A single lake (Lake Elysian) with a 50% DNA detection rate and evidence of ongoing transmission and CyHV‐3‐associated mortality was surveyed again in 2020 from April to September. During this period, none of the tissues from 24 species (n = 607 total fish) tested positive for CyHV‐3 though CyHV‐3 DNA and mRNA (indicating viral replication) was detected in carp tissues during the sampling period. CyHV‐3 DNA was detected most often in brain samples without evidence of replication, potentially indicating that brain tissue is a site for CyHV‐3 latency. Paired qPCR and ELISA testing for Lake Elysian in 2019–2020 identified young carp (especially males) to be the primary group impacted by CyHV‐3‐associated mortality and acute infections, but with no positive detections in juvenile carp. Seroprevalence of carp from Lake Elysian was 57% in 2019, 92% in April of 2020 and 97% in September 2020. These results further corroborate the host specificity of CyHV‐3 to carp in mixed wild populations of fishes in Minnesota and provide additional insights into the ecological niche of CyHV‐3 in shallow lake populations of carp in North America.

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“…Growth is a complex mechanism, which represents the outcome of the interactions among several biotic and abiotic factors operating behavioral and physiological processes. The number of age classes in any stock is greater when the survival rates are high [36,[49][50][51]. [ the Almas Dam Lake in Turkey [53].…”

Section: Resultsmentioning

confidence: 99%

Studies on age profile of Common carp, Cyprinus carpio (Linnaeus, 1758) from the Tons River, India

Mishra¹

2023

JMSR

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Heavy fishing affects the population by the exploited section of the stock in riverine water bodies. Cyprinus carpio is very frequently cultured in the Ganga basin especially middle and lower stretches of the river due to its plasticity nature (survival rate), fast growth rate, high market demand, consumer preference and very simply availability of seed (example fry and fingerlings). C. carpio is highly adaptable to a suite of environmental conditions. Age composition, age and growth of C. carpio were studied during February 2019 to 2020 January from fish landing centre at Sirsa, Prayagraj, Uttar Pradesh, India. The hard part, key scales were studied for estimation of age and growth in the present study because of easy availability. A total of 548 specimens in length ranges between 97 to 687 mm and age classes of 0+ to 9+ were estimated in the river. The fish attained mean length of 203, 325, 413, 478, 529, 565, 594, 621 and 643 mm, respectively at the end of 1+ to 9+ years of the life cycle. The maximum growth was observed in first year with 203 mm of the life span. The result also indicated that the age composition and growth rate of C. carpio in the invaded waters of the Tons River is very appropriate to the fishes.

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Study on age and growth of Indian Major carp (Labeo rohita) from the Ganga River

Cited by 5 publications

References 0 publications

Ecological assessment of the Amazon sailfin catfish (Pterygoplichthysspecies) within the Indian freshwaters: a mesocosm-based approach

Ecological assessment of the Amazon sailfin catfish (Pterygoplichthysspecies) within the Indian freshwaters: a mesocosm-based approach

Disease ecology and host range of Cyprinid herpesvirus 3 (CyHV‐3) in CyHV‐3 endemic lakes of North America

Studies on age profile of Common carp, Cyprinus carpio (Linnaeus, 1758) from the Tons River, India

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