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 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.

scholarly journals Length-weight relationship and condition factor of Indian major carps of Vallabhsagar Reservoir, Gujarat, India

2017 ◽  
Vol 64 ◽  
Author(s):  
Nandita Soni ◽  
N. C. Ujjania
Keyword(s):  
Condition Factor ◽  
Well Being ◽  
Scientific Management ◽  
Catla Catla ◽  
Weight Relationship ◽  
Indian Major Carps ◽  
Baseline Information ◽  
The Mean ◽  
Conducive Environment ◽  
Major Carps

The present study elucidated the length-weight relationship and condition factor of the Indian major carps catla Catla catla, rohu Labeo rohita and mrigala Cirrhinus mrigala from the Vallabhsagar Reservoir, Gujarat. The mean total lengths (TL) recorded for the three species during the study were, 40.734±0.614, 39.285±0.892 and 38.010±0.925 cm while mean weights (WT) recorded were 914.141±46.672, 969.306±93.738 and 635.714±51.129 g for catla, rohu and mrigal, respectively. The length and weight variables showed linear relationship as depicted by correlation coefficient (r) values of 0.987 in catla, 0.956 in rohu and 0.967 in mrigal. Growth in the three species was found to be positive allometric and exponent values (b) obtained were 3.104, 3.342 and 3.049 for catla, rohu and mrigal respectively. The condition factor (K) and relative condition factor (Kn) estimated revealed the well being of fish and conducive environment of the reservoir. Results of the study provided baseline information which would be helpful for the scientific management of Indian major carp fisheries in the Vallabhsagar Reservoir in Gujarat.

Spatio-temporal variations in length-weight relationship and condition factor of two notopterids, Chitala chitala (Hamilton, 1822) and Notopterus notopterus (Pallas, 1769)

2020 ◽  
Vol 67 (2) ◽  
Author(s):  
Rejani Chandran ◽  
Rajeev K Singh ◽  
Achal Singh ◽  
Pradipta Paul ◽  
Rama Shankar Sah ◽  
...  
Keyword(s):  
Condition Factor ◽  
Temporal Variations ◽  
Biological Behaviour ◽  
Weight Relationship ◽  
Relative Condition Factor ◽  
Chitala Chitala ◽  
Baseline Information ◽  
Spatio Temporal ◽  
Management And Conservation ◽  
Notopterus Notopterus

Length-weight relationship and condition factor of Chitala chitala (Hamilton, 1822) and Notopterus notopterus (Pallas, 1769) was studied from 439 samples of C. chitala collected from 14 locations and 368 samples of N. notopterus colleted from 19 locations in Indian rivers. The regression coefficient ranged from 2.24 (River Gomti) to 3.24 (River Son) in C. chitala and 2.34 (River Son) to 3.71 (River Krishna) in N. notopterus. Fulton’s condition factor and relative condition factor were found to be greater for N. notopterus than C. chitala in common sites of collection. Spatial variations indicated better biological behaviour for C. chitala in River Son and for N. notopterus in River Chambal. The results of the study form important baseline information for developing sustainable management and conservation measures.

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 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 condition factor of Clariid fish species in Kano Rivers, Kano State, Nigeria

2021 ◽  
Vol 44 (3) ◽  
pp. 135-139
Author(s):  
I. O. Suleiman ◽  
G.N. Akpa ◽  
P. I. Bolorunduro
Keyword(s):  
Body Weight ◽  
Condition Factor ◽  
Clarias Gariepinus ◽  
Water System ◽  
Well Being ◽  
Weight Relationship ◽  
Tropical Water ◽  
Fish Samples ◽  
Heterobranchus Longifilis ◽  
State Body

Fish found in natural tropical and sub-tropical water system experience frequent growth fluctuations. The study was conducted to determine the length-weight relationship and condition factor of Clariid species (Clarias gariepinus, Heterobranchus longifilis and Synodontis clarias) in Kano state of Nigeria. About 177 fish samples were collected from six rivers (Thomas, Ghari, Tiga, Duddurun-Gaya, Karaye and Bagwai) across the length and breadth of Kano state. Body weight (BW=248.48g), total length (TL=32.74cm) and standard length (SL=26.16cm) were determined. The length-weight relationship and condition factors were also determined. The condition factors showed varying degree of well-being of fish sampled from their habitat, and ranged from K = 0.37 to 0.89. The equation for the lengthweight relationship for the three strains is: C. gariepinus = -329.86+17.56TL, H. longifilis = -241.49+14.28TL and C. clarias = -428.51+22.72TL. Body weight and length had positive and significant relationship (r = 0.73 TL; r = 0.75 SL).

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