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

scholarly journals Hubungan panjang bobot dan faktor kondisi ikan wader bintik dua Barbodes binotatus (Valenciennes, 1842) di Sungai Barambai Samarinda Kalimantan

2019 ◽  
Vol 18 (2) ◽  
pp. 87 ◽  
Author(s):  
. Jusmaldi ◽  
Nova Hariani
Keyword(s):  
Sex Ratio ◽  
Condition Factor ◽  
Mean Value ◽  
Male And Female ◽  
Weight Relationship ◽  
Total Length ◽  
East Kalimantan ◽  
Fish Samples

Biology of the spotted barb Barbodes binotatus (Valenciennes, 1842) in Barambai River, east Kalimantan is unknown. This study aimed to analyses sizes of fish, sex ratio, length-weight relationship and condition factor of the spotted barb. A total of 347 fish samples were collected by several gears in Barambai River from August to October 2017. The results of this research showed that the total length of the fish ranged from 45.67 to 146.01 mm and weight ranged from 1.27-43.34 g. The sex ratio of male and female were 1:1.12. The length-weight equations for males was W = 1x10-5 L3.063, W = 8x10-6L3.108 for females, and W = 9 x 10-6 L3.091 for both sexes. The condition factor (K) for the spotted barb was ranged between 0.826 – 2.214 with mean value of 1.163.  AbstrakBiologi ikan wader bintik dua Barbodes binotatus (Valenciennes, 1842) di Sungai Barambai, Kalimantan Timur belum diketahui. Penelitian ini bertujuan menganalisis ukuran ikan, nisbah kelamin, hubungan panjang bobot, dan faktor kon-disi. Total 347 sampel ikan dikumpulkan dengan menggunakan berbagai alat tangkap di Sungai Barambai dari bulan Agustus sampai Oktober 2017. Hasil penelitian menunjukkan bahwa panjang total ikan berkisar dari 45,67 sampai 146,01 mm dan bobot tubuh berkisar 1,27- 43,34 gram. Nisbah kelamin jantan dan betina 1: 1,12. Model hubungan panjang bobot ikan jantan W = 1x10-5 L3,063, ikan betina W = 8x10-6L3,108,dan keseluruhan jenis ikan W =  9 x 10-6  L3,091. Faktor kondisi (K) ikanwader bintik dua berkisar antara 0,826 - 2,214 dan rata-rata 1,163. 

scholarly journals Morphometry, length-weight relationship and relative condition factor of red-toothed trigger fish, Odonus niger

2021 ◽  
Vol 42 (4) ◽  
pp. 1026-1032
Author(s):  
N.K. Suyani ◽  
◽  
R. Mridula ◽  
K.M. Rajesh ◽  
M.M. Meshram ◽  
...  
Keyword(s):  
Condition Factor ◽  
Coefficient Of Determination ◽  
Allometric Growth ◽  
Morphometric Measurements ◽  
Morphometric Characters ◽  
Weight Relationship ◽  
Relative Condition Factor ◽  
Wide Range ◽  
Size Groups ◽  
Combined Data

Aim: The study aimed to investigate the morphometric and meristic measurements, length-weight relationship and relative condition factor of Odonus niger landed along coastal Karnataka. Methodology: The morphometric and meristic measurements, length-weight relationship and relative condition factor (Kn) of O. niger was studied for a period of eight months from August 2019 to March 2020. The different morphometric characters were subjected to statistical analysis. The length-weight relationship was analyzed for both the sexes (female and male) and combined data. Monthly relative condition factor was analyzed for both the sexes and for different size group. Results: A comparison of different morphometric measurements exhibited good extent of correlation indicating good extent of interdependence of these characters. Four out of eight morphometric characters are environmentally controlled and suggested wide range of zoogeographical distribution of O. niger. The length-weight relationship is indicated as W = 0.046 L2.565, W = 0.044 L2.589 and W = 0.047 L2.561 with coefficient of determination (r2) of 0.910, 0.913 and 0.910 for male, female and combined sexes, respectively. The 'b' values of both the sexes (male and female) exhibited negative allometric growth (p<0.05) and appeared to be leaner. There was no significant (p<0.05) variation for relative condition factor (Kn) among the months and size groups. However, little higher values were observed during November and February. Interpretation: The study fills the knowledge gap and support for developing a suitable management system for this fish species.

scholarly journals Length-weight relationship and relative condition factor of five Labeo spp. from river Cauvery in India

2019 ◽  
Vol 66 (2) ◽  
Author(s):  
S. Sibina Mol ◽  
A.K. Jaiswar ◽  
P. Panikkar ◽  
B.K. Behera ◽  
H. Sanath Kumar ◽  
...  
Keyword(s):  
Fish Species ◽  
Large Scale ◽  
Condition Factor ◽  
Regression Coefficient ◽  
Maximum Length ◽  
Cauvery River ◽  
Peninsular India ◽  
Weight Relationship ◽  
Relative Condition Factor ◽  
First Time

Length-weight relationship (LWR) of five species of the genus Labeo (Family: Cyprinidae) namely L. rohita (Hamilton,1822), L. calbasu (Hamilton,1822), L. bata (Hamilton,1822), L. dyocheilus (McClelland, 1839) and L. porcellus (Heckel, 1844), based on 214 specimens collected from Cauvery River in Peninsular India, were established. Sampling was carried out from December 2017 to December 2018 at around three months interval. The value of regression coefficient (b) ranged from 2.6147 (L. bata) to 3.2855 (L. dyocheilus). A new maximum length of 41 cm for L. porcellus has been recorded. For L. porcellus, LWR is established for the first time while for other species (except L. rohita); it is estimated for the first time from a peninsular river in India. Relative condition factor estimated for the five fish species did not show large scale variation (1.001 to 1.019).

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 Biological parameters of Bonylip barb (Osteochilus vittatus Valenciennes, 1842) in Lake Rawa Pening Semarang Regency

2020 ◽  
Vol 20 (3) ◽  
pp. 251
Author(s):  
Sadza Maulidyasari ◽  
Djumanto Djumanto
Keyword(s):  
Sex Ratio ◽  
Condition Factor ◽  
Good Condition ◽  
Biological Parameters ◽  
Chi Square ◽  
Weight Range ◽  
Weight Relationship ◽  
Length Range ◽  
Chi Square Test ◽  
Relationship Of

Bonylip barb (Osteochilus vittatus Valenciennes, 1842) is an indigenous fish which is the main target of fishermen in lake Rawa Pening. This study aims to determine the biological parameters including length-weight relationship, con-dition factor, and sex ratio of bonylip barb in lake Rawa Pening, Semarang Regency. Fish sampling was conducted biweekly from October 2019 to March 2020, caught using bamboo blinds operated by local fishermen. Data collected consisted of total length, individual weight, and sex. Data on the length-weight relationship and condition factors were analyzed descriptively, while the sex ratio was analyzed with the chi-square test (χ2). The results showed that female bonylip barb was obtained as many as 392 individuals with a length-range between 10.0-26.0 cm and a weight range between 14.5-264.1 g. The male counted 255 individuals with a length range of 10.2-22.4 cm and a weight range of 15.0-160.9 g. The growth pattern was allometric negative. The equation of the length-weight relationship of female was W = 0.0186 L 2.9096 (R² = 0.9527), and the male was W = 0.0151 L 2.9689 (R² = 0.9386). The value of the average condition factor of females was 1.05, and the males was 1.02. The condition factor in females was in excellent condition (> 1.05), and males were in good condition (0.95-1.05). The overall sex ratio of male and female was 1:1.54. It means that females population was significantly higher than males.

scholarly journals Condition factor of Goniopsis cruentata (Crustacea, Brachyura, Grapsidae) from Mundaú/Manguaba estuarine complex, Alagoas, Brazil

2012 ◽  
Vol 102 (3) ◽  
pp. 285-291 ◽  
Author(s):  
José J. P. R. Lira ◽  
Tereza C. S. Calado ◽  
Marina S. L. C. Araújo
Keyword(s):  
Condition Factor ◽  
Well Being ◽  
Northeast Brazil ◽  
Gonad Weight ◽  
Weight Relationship ◽  
Autumn And Winter ◽  
General Indicator

The condition factor is a parameter which acts as a general indicator of the "well-being" of a species, and it can be obtained through the analysis of width vs. weight relationships. The present work aims to investigate size vs. weight relationship and the condition factor of the crab Goniopsis cruentata (Latreille, 1803). The study area was the Mundaú/Manguaba estuarine complex, Maceió, state of Alagoas, Northeast Brazil. Samplings were monthly accomplished from August 2007 to July 2008. A total of 626 individuals were analyzed, being 309 males and 317 females. Males were larger and heavier than females, what is expected in many brachyuran. The growth was positive allometric to both males (b = 3.42) and females (b = 3.30), not obeying the "cube law". The condition factor of female was higher than that of male crabs, probably due to the gonad weight of females. It also varied seasonally for both sexes, being higher in the autumn and winter in males, and in the autumn and spring in females, and related to the molt and period of spawning intensification.

scholarly journals Length-Weight Relationship and Sex Ratio of Amblypharyngodon Mola in Dekar Haor of Sunamganj, Bangladesh

2018 ◽  
Vol 44 (2) ◽  
pp. 185-193
Author(s):  
PR Das ◽  
MS Uddin ◽  
MS Islam ◽  
M Biswas ◽  
MR Mia
Keyword(s):  
Sex Ratio ◽  
Freshwater Fish ◽  
Condition Factor ◽  
Correlation Coefficients ◽  
Male And Female ◽  
Positive Correlation ◽  
Average Ratio ◽  
Weight Relationship ◽  
R Value ◽  
Relationship Of

The study was carried out to determine length-weight relationship and sex ratio of a freshwater fish Amblypharyngodon mola (Hamilton 1822) collected from Dekar haor of Sunamganj district during the period of January to August 2017. A total of 2000 fishes were collected for the study and categorized these fishes into three groups namely males, females and combined sexes. Among 2000 mola 777 were male and 1223 were female. Length-weight equations and the correlation coefficients obtained for males, females and combined ones were: males Y = –1.97 + 3.00X, r = 0.883; females Y = –2.30 + 3.41X, r = 0.914 and combined Y = –2.11 + 3.16X, r = 0.904. Female’s A. mola attained more weight with the increases in length. Value of correlation coefficient ‘r’ was 0.883 for male and exhibited highly positive correlation between length and weight. On the contrary, ‘r’ value for female was 0.914 and it had also strongly positive correlation between length and weight relationships. Length-weight relationship of A. mola for male, female and combined sexes showed allometric pattern of growth. Condition factor ‘K’ for male, female and combined sexes was 1.09, 1.05 and 1.06, respectively and indicated better condition of fishes. The highest sex ratio (1 : 2.05) was found in May and the lowest (1 : 1.33) was in February. Dominance of females over males throughout the year was observed with an average ratio of male and female 1 : 1.57. Therefore, results of the study indicate that the existing hydrobiological conditions of the haor are conducive for food availability, free movement, feeding and better growth of the fish. Asiat. Soc. Bangladesh, Sci. 44(2): 185-193, December 2018

Sign in / Sign up

Export Citation Format

Share Document