scholarly journals Length-weight relationships of the Indian Major Carp, Labeo rohita (Cypriniformes: Cyprinidae) from six drainages of Ganga basin, India

2015 ◽  
Vol 7 (1) ◽  
pp. 71-77
Author(s):  
Javaid Iqbal Mir ◽  
Uttam Kumar Sarkar ◽  
Om Prakash Gusain ◽  
Arvind Kumar Dwivedi
Keyword(s):  
Labeo Rohita ◽  
Main Channel ◽  
Coefficient Of Determination ◽  
Important Food ◽  
Indian Major Carp ◽  
Ganga Basin ◽  
Natural Range ◽  
Food Fish ◽  
Management And Conservation ◽  
Tropical Freshwater

The Indian Major Carp, Labeo rohita, is a geographically widespread and economically important food fish species in tropical freshwater of India and adjacent countries. We studied the lengthweightrelationships of 1 033 specimens collected from the main channel of Ganga river and its five major drainages from March 2009 to July 2012. The length of males ranged from 16 to 92cm (females: 16to 94cm). The growth is allometric positive (b>3) for males, females and pooled sexes. The coefficient of determination (r2) in males ranged from 0,978 to 0,989 and for females from 0,958 to 0,985. Data from field populations are scarce and our results will be useful in the management and conservation of L. rohita populations in its natural range.

Study on Biometric Parameters and Genetic Diversity of Labeo rohita from Harike Wetland-A Ramsar Site

2020 ◽  
Author(s):  
Surjya Narayan Datta ◽  
Armaandeep Kaur ◽  
Anuj Tyagi
Keyword(s):  
Genetic Diversity ◽  
Labeo Rohita ◽  
Coi Gene ◽  
Series Data ◽  
Ramsar Site ◽  
Important Food ◽  
Commercially Important ◽  
Food Fish ◽  
Harike Wetland ◽  
Catch Composition

Background: Harike wetland (31°08¢ N to 31°23¢ N latitudes and 74°90¢ E to 75°12¢ E longitudes) is an internationally important Ramsar site, supports rare, vulnerable and endangered plants, fish and other faunal species. Weed infestation, pollution and encroachment are considered as important threats of its biota thus time series data with respect to fish diversity, catch composition and genetic variability has an utter importance to interpret changes over time. Cyprinidae family of freshwater fishes includes carps is the largest fish family found in Harike wetland comprising around 50% of total fish composition by weight basis and among carps, Rohu (Labeo rohita) is one of the commercially important food fish species available throughout the year and preferred by consumers. As river Beas and Sutlej, two major rivers of Indus river system confluence at Harike thus possibility of variation within fish stock is very high. With this background present study was carried out to evaluate the fish biodiversity and catch composition of Harike wetland. Study also emphasized on biometrics, length –weight relationship and genetic diversity based on mitochondrial marker genes of commercially important food fish Labeo rohita. Methods: Assessment of fish catch composition and diversity were conducted in landing centre adjacent to Harike wetland through Rapid Fisheries Assessment by Market Survey (RFAMS) technique. Fin tissue samples were collected for genetic diversity analysis of L. rohita by cytochrome oxidase subunit I (COI) gene sequencing, From the fish genomic DNA a partial fragment of approximately 655bp was PCR amplified by FishF1 (5'-TCAACCAACCACAAAGACATTGGCAC-3') and FishR1 (5'-TCGACTAATCATAAAGATATCGGC AC-3') primer pair. Calculation of intraspecific mean and pairwise distances was performed by MEGA 6.0 software using the K2P parameters Results: Total 30 species of fishes were recorded from Harike wetland and these belong to 14 families and 21 genera. In L. rohita average weight (Wt), total length (TL), standard length (SL) and forked length (FL) were recorded 2600±5.64g (1700-3600 g), 58.2±5.65 cm (51.3-67.6cm), 48.0±8.54 cm (42.5-55.5cm) and 46.0±0.25 cm (38.0-54.5cm), respectively. Biometric study revealed that sufficient numbers of mature L. rohita are available in wetland. L. rohita established negative algometric growth (b= 2.701); thus species became slender as it increased in length. The pairwise distances ranged from 0.00 to 18.49% with a mean ±S.E value of 4.70%±0.40. Total of 9 haplotypes were observed in L. rohita COI sequences. The diversity in haplotype and nucletide values were observed 0.848 and 0.024, respectively. The present study states that L. rohita stocks in Harike wetland are genetically diverse.

Fish Erythrocytes as Biomarkers for the Toxicity of Sublethal Doses of an Azo Dye, Basic Violet-1 (CI: 42535)

2014 ◽  
Vol 21 (1) ◽  
pp. 264-273 ◽  
Author(s):  
Kirandeep Kaur ◽  
Arvinder Kaur
Keyword(s):  
Azo Dye ◽  
Labeo Rohita ◽  
Abnormal Behavior ◽  
Important Food ◽  
Short Term ◽  
Sem Study ◽  
Test Fish ◽  
Food Fish ◽  
Sublethal Doses ◽  
Scanning Electron

AbstractThe aim of the present study was to investigate poikilocytosis in Labeo rohita (an important food fish) as an early indicator of stress due to an azo dye, Basic Violet-1 (CI: 42535). This dye was observed to be very toxic to test fish (96 h LC50 as0.45 mg/L dye). Fish were given short-term (96 h) and subchronic (150 days) exposures to the dye, and poikilocytosis was recorded under light and scanning electron microscopy (SEM). Light microscopy helped in identification of micronuclei along with irregularities, notches, blebs, lobes, crenation, clumps, chains, spherocytes, vacuolation, and necrosis in erythrocytes. However, SEM indicated shrinkage, oozing of cytoplasm, and several new abnormal shapes including marginal foldings, discocytes, keratocytes, dacrocytes, degmacytes, acanthocytes, echinocytes, protuberances, stomatocytes, drepanocytes, holes in the membrane, stippling/spicules, crescent-shaped cells, triangular cells, and pentagonal cells. Earlier studies speculated changes in the membrane to be responsible for clumping and chaining of erythrocytes, whereas the present SEM study clearly indicates that oozing out of cytoplasm is also responsible for the formation of chains and clumps. This study also shows that erythrocytes exhibit pathological symptoms before the appearance of other external symptoms such as abnormal behavior or mortality of fish. There was a dose- and duration-dependent increase; therefore, poikilocytosis, especially echinocytes, spherocytes, and clumps, can act as a biomarker for the stress caused by azo dyes.

Increased water temperature interrupts embryonic and larval development of Indian major carp rohu Labeo rohita

2021 ◽  
Author(s):  
Mohammad Ashaf-Ud-Doulah ◽  
S. M. Majharul Islam ◽  
Md Mahiuddin Zahangir ◽  
Md Sadiqul Islam ◽  
Christopher Brown ◽  
...  
Keyword(s):  
Water Temperature ◽  
Larval Development ◽  
Labeo Rohita ◽  
Indian Major Carp ◽  
Embryonic And Larval Development

Efficacy of two avermectins, doramectin and ivermectin against Argulus siamensis infestation in Indian major carp, Labeo rohita

2012 ◽  
Vol 190 (1-2) ◽  
pp. 297-304 ◽  
Author(s):  
K.P. Hemaprasanth ◽  
Banya Kar ◽  
S.K. Garnayak ◽  
J. Mohanty ◽  
J.K. Jena ◽  
...  
Keyword(s):  
Labeo Rohita ◽  
Indian Major Carp ◽  
Argulus Siamensis

Technological effect of dietary oat fiber on the quality of minced sausages prepared from Indian major Carp (Labeo rohita)

2022 ◽  
pp. 100305
Author(s):  
Sandeep Bhaskar Gore ◽  
K.A. Martin Xavier ◽  
Binay Bhushan Nayak ◽  
Ajay Trimbak Tandale ◽  
Amjad Khansaheb Balange
Keyword(s):  
Labeo Rohita ◽  
Indian Major Carp

scholarly journals Gill net Selectivity and Fishing Pressure on Indian Major Carp in Thirumoorthy Reservoir, Tamil Nadu

2016 ◽  
Vol 11 (2) ◽  
pp. 554-559 ◽  
Author(s):  
R Velmurugan ◽  
N Neethiselvan ◽  
B Sundaramoorthy ◽  
Xavier Rayan ◽  
Kalidoss Radhakrishnan ◽  
...  
Keyword(s):  
Tamil Nadu ◽  
Labeo Rohita ◽  
Monsoon Season ◽  
Catla Catla ◽  
Fishing Pressure ◽  
Catch Per Unit Effort ◽  
Indian Major Carp ◽  
Gill Net ◽  
Dominant Fish ◽  
Post Monsoon Season

In present study attempts has been made to document the fishing crafts and gears which operated in Thirumoorthy reservoir, Tamil Nadu. This investigation revealed, the post monsoon season had higher catch per unit effort of 11kg/boat/day by gillnet fishing and about 20 to 30kg/day in cast net. Catla catla has the dominant fish species and accounted about 58% followed by Cirrhinus mrigala (29%), Labeo rohita (12%) and Cyprinus carpio (2%) against the total landings. However, three species including the Tilapia, Rohu and Mrigala were found to constitute fishery in the cast net with mean CPUE of 20 to 30 kg per day.

Sign in / Sign up

Export Citation Format

Share Document