scholarly journals Study of Length-weight relationship and the condition factors of Lepidocephalichthys guntea (Hamilton, 1822) from Kangsabati river of district West Midnapore, West Bengal, India.

2021 ◽  
Vol 23 (08) ◽  
pp. 602-615
Author(s):  
Sayan Mandal ◽  
◽  
Basudev Mandal ◽  
Keyword(s):  
West Bengal ◽  
Condition Factor ◽  
Natural Habitat ◽  
Strong Relationship ◽  
Well Being ◽  
Freshwater Species ◽  
K Value ◽  
Weight Relationship ◽  
Total Length ◽  
Relative Condition Factor

The Peppered loach, Lepidocephalichthys guntea is the least concerned freshwater species, commonly found in India, Pakistan, Nepal, and Bangladesh. In West Bengal, it is popularly known as “Guntey” & it has commercial and food value. The current study aimed to the estimation of the length-weight relationship, condition, and relative condition factor (Kn) of the fish species Lepidocephalichthys guntea, habitats of Kangsabati river in the District West Midnapore, West Bengal, India. Total 161 numbers of species were collected between August 2019 to July 2020 and considered for examination. The fishes ranged from 5.4 to 10.7 cm in total length & 0.72 to 9.73 g in weight. The scatter diagram exhibits a linear relationship between the log length & log weight. The female species has a higher “b” value (b=3.452, P<0.05), which is greater than 3 which justifying a positive allometric growth. The parabolic equation among total length and weight of L. guntea is labeled as W= 0.008744991 L 2.7496 for males, W= 0.002153098 L 3.452 for females & W= 0.007575793 L 2.8155 for the combination of male and female species. Higher r2 (0.859, P<0.05) value in combined of male & female justifying a strong relationship between length and length. The mean condition(K) & relative condition factor (Kn) values were found to be the height in the male category with "K" value 0.654 & "Kn” value1.174 respectively indicating the well-being of the species. Although, this species does not sternly follow the cube law & shows a well status of health condition in their natural habitat.

scholarly journals Length-weight relationship and ponder index of two Indian major carps in Dejla Dewada reservoir, Khargone, M.P.

2013 ◽  
Vol 14 (1&2) ◽  
pp. 65-68
Author(s):  
S.K. Pathak ◽  
Sandhya Kshetre
Keyword(s):  
Body Weight ◽  
Correlation Coefficient ◽  
Condition Factor ◽  
Well Being ◽  
Catla Catla ◽  
Weight Relationship ◽  
Total Length ◽  
Indian Major Carps ◽  
Relative Condition Factor ◽  
Major Carps

The total 200 specimens of Catla catla and Cirrhinus mrigla were worked out during the two year study periods, from Dejla Dewada reservoir of Khargone district. Total length and body weight were estimated. The correlation coefficient (“r”) and ponder index (“Kn”) have also been computed. The result showed the growth of two IMC is satisfactory. The value of exponent ‘n’ in the equation W=cLn were 1.9416 and 1.4798 for Catla catla and Cirrhinus mrigla. The relative condition factor (“Kn”) remained greater than one fir both IMC indicating their good well being.

scholarly journals Length-weight relationship and condition factor of Tade gray mullet, Chelon planiceps (Valenciennes, 1836) from Hooghly-Matlah Estuary, West Bengal, India

2017 ◽  
Vol 5 (1) ◽  
Author(s):  
Soumendra Pramanick ◽  
Sudhir Kumar Das ◽  
Dibakar Bhakta ◽  
Canciyal Johnson
Keyword(s):  
West Bengal ◽  
Condition Factor ◽  
B Value ◽  
Size Group ◽  
Estuarine System ◽  
Weight Relationship ◽  
Relative Condition Factor ◽  
Biological Management ◽  
First Maturity ◽  
Size At First Maturity

Tade gray mullet (Chelon planiceps) forms a lucrative fishery in the Hooghly-Matlah estuarine system. During eight months of investigation 232 specimens were examined to study length-weight relationship and relative condition factor (Kn). The length and weight of fish was varied from 41 to 283 mm and 0.81 to 208 g respectively. Two length-weight relationship equations were obtained from the analysis, W=0.0000397L2.952 for <187 mm size group and W=0.0000406L2.834 for >187 mm size group. The size at first maturity was recorded as 187 mm. The b value was not significantly different from 3 indicating isometric growth. The monthly mean Kn for the male and female were 1.041–1.125 and 1.009–1.236 respectively. The highest Kn value was recorded in July for both the sexes, which may be due to advance maturity stages. The present study will be useful in the context of biological management of mullet fishery as well as to find out aqua-farming potential of Tade gray mullet.

scholarly journals Length-weight Relationship of Heterobranchus bidorsalis (Geoffroy st. Hilaire 1809) Diploid and Triploid Progenies raised under the same Environmental condition

2021 ◽  
Vol 38 (1) ◽  
pp. 160-166
Author(s):  
O. T. Agbebi ◽  
S. O. Otubusin ◽  
S. O. Olufeagba
Keyword(s):  
Regression Analysis ◽  
Condition Factor ◽  
Environmental Condition ◽  
Weight Relationship ◽  
Total Length ◽  
Relative Condition Factor ◽  
Adaptive Environment ◽  
Factor Evaluation ◽  
Relationship Of

Twenty specimens of triploid with weight and length ranging from 207-300g and 29-32cm; diploid 150-200g and 23-28cm Heterobranchus bidorsalis (Geoffroy St. Hilaire 1809) were subjected to morphometric and meristic characterization, length-weight relationship and condition factor evaluation. Triploid specimens had the higher values in all the parameters examined and were significantly different (P<0.005). Regression analysis of diploid and triploid show the ranges of values (K) of 0.802 1.453 and 0.838 0.906 respectively, for condition factor (k) while the relative condition factor values (Kn) ranged between 0.869 1.087 and 0.968 1.038 respectively. Weight increases directly as the total length increases for both diploid and triploid indicating isometric growth. The R2 in triploid was higher (96.8%) than in diploids (42.4%). In diploid progenies, the length by weight was significantly different (P<0.05) in triploid. Triploid progenies need no special adaptive environment or technique for rearing. Therefore, diploid and triploid progenies can be successfully cultured simultaneously under the same environmental condition.

scholarly journals Length-Weight Relationship and Condition Factor of Crayfish from South Sorong and Jayawijaya, Papua, Indonesia

2017 ◽  
Vol 75 (1) ◽  
pp. 18-24 ◽  
Author(s):  
Jean Marlin Weya ◽  
Nanda Sendy Rumbiak ◽  
Sucipto Hariyanto ◽  
Bambang Irawan ◽  
Agoes Soegianto
Keyword(s):  
Food Supply ◽  
Condition Factor ◽  
Natural Habitat ◽  
B Value ◽  
K Value ◽  
Growth Coefficient ◽  
Weight Relationship ◽  
Crayfish Species ◽  
Suitable Environment

Abstract The objectives of this study were to investigate the length-weight relationship and condition factor of crayfish living in the natural habitat of South Sorong and Jayawijaya Regencies, Papua, Indonesia. Three species of crayfish (Cherax monticola, C. albertisii and C. communis) were collected from Jayawijaya Regency and only one species of crayfish (C. swonden) was collected from South Sorong Regency. The growth coefficient (b) for each crayfish species ranged from 2.55 to 3.10. C. monticola from Jayawijaya Regency presented the highest b value (3.10), and C. swonden from South Sorong Regency showed the lowest b value (2.55). The condition factors (K) for each crayfish species ranged from 1.9 to 2.3. C. monticola and C. albertissi had the highest K value (2.3), whereas C. swonden demonstrated the lowest K value (1.9). The present study indicated that the values of b and K of crayfish living in Jayawijaya were higher than those from South Sorong probably because Jayawijaya habitat provides more suitable environment and better food supply for crayfish than South Sorong.

scholarly journals Length-weight relationship and condition factor of Bangana dero (Hamilton, 1822) (Actinopterygii: Cypriniformes: Cyprinidae) from northeastern region of India

2018 ◽  
Vol 10 (7) ◽  
pp. 11863
Author(s):  
Kamlesh Kumar Yadav ◽  
Rani Dhanze
Keyword(s):  
Standard Length ◽  
Condition Factor ◽  
River System ◽  
Well Being ◽  
Allometric Growth ◽  
Weight Relationship ◽  
Total Length ◽  
A Value ◽  
Length Relationship ◽  
Unit Increase

Assessment of length-weight relationship (LWR), length-length relationship (LLR) and condition factor was carried out for Bangana dero in northeastern India, mainly from the Brahmaputra and Irrawaddy (Manipur) River system.  We report a value of ‘b’ 3.1269 and 3.1426 for LWR with respect to total length and standard length respectively, indicating positive allometric growth. The value of ‘b’ for LLR is less than one, which indicates that growth in total length is less with per unit increase in standard length.  The value of ‘K’ and ‘Kn’ is 0.91 and 0.72 depicts normal well being of fish in its habitat. 

scholarly journals Length-weight relationship and condition factor of bombay duck Harpadon nehereus from landings of fishery ghat, Chittagong

2016 ◽  
Vol 3 (2) ◽  
pp. 355-360
Author(s):  
Tasnuba Hasin
Keyword(s):  
Standard Length ◽  
Feeding Rate ◽  
Condition Factor ◽  
Mesh Size ◽  
Allometric Growth ◽  
Weight Relationship ◽  
Total Length ◽  
Relative Condition Factor ◽  
Bombay Duck ◽  
Harpadon Nehereus

The current study describes the length-weight relationships and condition factor of Bombay duck, Harpadon nehereus from landings of Fishery Ghat, Chittagong. A total of 300 individuals caught by various mesh size of gill nets by commercial fishers were investigated from April 2016 to June 2016. On the basis of hypothetical cube law W=aLb, the variance of ‘b’ for both total length and standard length were estimated statistically (0.0090 and 0.0088 respectively). Using the value of t=1.96 at the 95% confidence limits for ‘b’ were estimated as 2.218 to 2.590 for total length-weight relationship and for standard length-weight relationship, 1.985 to 2.353 which indicated allometric growth pattern for both cases. The monthly relative condition factor during three months of observation (0.978, 1.033, and 1.097) showed no notable difference due to spawning strain, spent condition and lower feeding rate right after peak spawning season.Res. Agric., Livest. Fish.3(2): 355-360, August 2016

scholarly journals Relative condition factor, length-weight relationship and sex ratio of copper mahseer, Neolissochilus hexagonolepis (McClelland, 1839) from Tamor River, Nepal

Our Nature ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 27-34
Author(s):  
Suren Subba ◽  
Bharat Raj Subba ◽  
Vinod Kumar Mahaseth
Keyword(s):  
Sex Ratio ◽  
Condition Factor ◽  
Well Being ◽  
Mean Value ◽  
Sudden Increase ◽  
Weight Relationship ◽  
Relative Condition Factor ◽  
Length Range ◽  
Size Groups ◽  
First Time

The present investigation was carried out for establishing the length weight relationship and to enumerate the relative condition factor and the sex ratio of Neolissochilus hexagonolepis from Tamor River, Nepal. Altogether 198 fishes were investigated from December 2014 till the end of November 2016. The sex ratio of the fish was found to be in the ratio of 1:1.2 with female dominating the catch for most parts of the year. Analysis of t-test showed a highly significant relationship (p˂0.05) between length and weight for male, female and sexes pooled. The fish was found to show isometric growth pattern with exponential value (b) equal to 2.962 for sexes pooled. The mean value of Fulton's condition factor (K) for sexes pooled was found to be 1.29 ± 0.49 giving the indication that the general well being of the fish was good. Sudden increase in the value of relative condition factor (Kn) in the size group 30-33 cm in male and 42-45 cm in female indicated their length range during which they showed the sign of maturation for the first time. Steep fall in the value of 'Kn' in size groups 33-36 cm onwards in male and 45-48 cm in female indicated their length range at spent phase.

Length-weight relationship and relative condition factor of Gorean snapper, Lutjanus goreensis (Valenciennes, 1830) in the coastal zone of Lagos, south-west Nigeria

2020 ◽  
Vol 17 ◽  
pp. 20-25
Author(s):  
K.A. Fakoya ◽  
M.A. Anetekhai ◽  
A.O. Saba
Keyword(s):  
Coastal Zone ◽  
Condition Factor ◽  
Well Being ◽  
Culture Conditions ◽  
Coastal Zones ◽  
Weight Relationship ◽  
Relative Condition Factor ◽  
Eastern Atlantic Ocean ◽  
Baseline Information ◽  
First Time

Snappers are highly recommended as choice seafood and as viable candidate for cage culture in the brackish water and marine environments. However, very limited data exists on biological parameters of the snappers, Lutjanus species throughout their distribution range. Hence, the present study sought to improve knowledge on Length-Weight Relationship (LWR) and relative condition factor (Kn) of the Gorean snapper, Lutjanus goreensis (Valenciennes, 1830) sampled between December 2008 and December 2009 in the coastal zone of Lagos, Nigeria. Specimens were collected from landings of artisanal fisheries and inshore trawl fisheries. A total of 822 unsexed estuarine (7.90 to 34.90 cm and 9.51-695.60 g) and 377 sexed marine (21.90 to 56.10 cm and 156-2 975 g) specimens were analyzed. The overall value of the slope, b for the LWR indicated negative allometric growth for unsexed estuarine (2.860); marine male (2.856) and female (2.917) specimens, respectively. The relative condition factor, Kn did not vary significantly from 1. Sex-wise variations of b values and Kn were not significant either. The present study presents, for the first time, baseline information on the length-weight relationship parameters and condition of L. goreensis in the marine waters of Nigeria and in the Eastern Atlantic Ocean. The results are useful indicators to assess the well-being of wild Gorean snapper populations in Lagos coastal zones for management and under culture conditions. Keywords: Lutjanus goreensis; length-weight relationships; condition factor; Lagos; Nigeria

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