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Journal ArticleDOI

Length–weight relationship of Amblypharyngodon mola (Ham.-Buch., 1822), a freshwater cyprinid fish from West Bengal, India

12 Jan 2015-Zoology and ecology (Taylor & Francis)-Vol. 25, Iss: 1, pp 54-58
TL;DR: Values of correlation coefficients (r) suggest a significant (p < 0.01) positive relationship between length and weigh, which indicates a negative allometric growth of male specimens and a positive allometry growth of female and combined sex specimens.
Abstract: In the field of fisheries, the analysis of the length–weight relationship (LWR) is the most commonly used one. Among several purposes for which it is used, the most popular is the estimation of weight from length. The present study was performed to analyze the LWR of Amblypharyngodon mola (Ham.-Buch., 1822), a freshwater cyprinid fish from an undisturbed wetland of Balarampur, Baruipur, West Bengal, India. The total length of the studied male specimens varied from 4.8 to 7.4 cm and that of female specimens from 5.1 to 8.9 cm. The body weight of male specimens was in the range of 1.02–3.64 g and that of female specimens 1.19–6.32 g. The calculated regression coefficient (b) values were 2.77, 3.09, and 3.25 for male, female, and combined sex fish, respectively. They indicate a negative allometric growth of male specimens and a positive allometric growth of female and combined sex specimens. Values of correlation coefficients (r) suggest a significant (p < 0.01) positive relationship between length and weigh...
Citations
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Journal ArticleDOI
TL;DR: In this paper, the reproductive resilience of minnows facing climate variability, using a wetland inhabiting species Amblypharyngodon mola (Mola carplets) in lower Indo-Gangetic floodplains, was validated.

10 citations

Journal ArticleDOI
08 Apr 2021
TL;DR: The histological study of ovarian cells resulted in the characterization of oocytes, previtellogenic oocyte, viteLLogenicOocytes, perinuclear Oocytes, and mature cells with yolk mass, which showed a strong correlation with gonad weight and the total length and the body weight.
Abstract: The mola carplet, Amblypharyngodon mola (Hamilton, 1822) is the most common small indigenous freshwater fish species in Bangladesh. The precise information addressing the reproduction in this species including breeding peak, ovarian histology, morphometry, and sex ration in nature is still insufficient. A one yearlong filed survey and different laboratory assays have been directed to disclose some key features of reproduction in female A. mola from wetland reservoirs in the greater Sylhet region in Bangladesh. The total length and the body weight have shown a strong correlation with gonad weight, occupying statistical r2 values of 0.89 and 0.91, respectively. However, a Chi-square test at P

8 citations


Cites background or methods from "Length–weight relationship of Ambly..."

  • ...This fish has drawn significant commercial and cultural value due to its premium nutritional value (Abdulla et al., 2004; Alam et al., 2004; Shikha et al., 2019) and current adoption as ornamental fish in aquarium (Gupta & Banerjee, 2015)....

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  • ...Previous research by Gupta & Banerjee (2015) observed a regression correlation value of 0.913 for female A. mola it freshwater from West Bengal, India, while Nawer et al. (2018) reported a r2 value of 0.93-0.96 for the same species in the Ganges River, Northwestern Bangladesh....

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Journal ArticleDOI
TL;DR: Standard length vs. body weight relationship indicated an isometric growth in both sexes, however, ANCOVA revealed significant differences in intercept.

6 citations

Journal ArticleDOI
TL;DR: It is revealed that Anisophyllea laurina seed meal could serve as substitute source of vital nutrient and antioxidant ingredients with health benefits at 25% and 50% levels.
Abstract: Length-weight relationships are of significance as an important tool for the assessment of the growth pattern of fish species and the condition in which they grow. This study evaluates the biological parameters (’a, b, and r 2 ’) as well as length-weight relationship and condition factor of 150 specimens of Clarias gariepinus fed dietary inclusion of Anisophyllea laurina seed meal. The values of the regression coefficient ‘b’ obtained for the length-weight relationship for the five treatments were 3.3, 3.03, 3.0, 2.9 and 2.7 with corresponding coefficient of determination (R 2 ) values of 0.8313, 0.9517, 0.9629, 0.9223, and 0.8726. T4 and T5 exhibited a negative allometric growth pattern. In addition, T1, T2 and T3 demonstrated isometric growth and displayed the ideal shape of fish. The regression equation for the LWR was (W=32.72+ 0.32), revealing a significant correlation between the variables. The coefficient of determination shows a significant relationship (r 2 = 0.95) between length and weight of T2 and T3 (25% and 50% ASM inclusions) and other treatments. The species are found to be in a good condition as shown by the condition factor which was k >1. In conclusion, the results revealed that Anisophyllea laurina seed meal could serve as substitute source of vital nutrient and antioxidant ingredients with health benefits at 25% and 50% levels. Keywords: Isometric growth; regression coefficient; correlation of determination; antioxidant

5 citations


Cites background from "Length–weight relationship of Ambly..."

  • ...Clarias gariepinus feed on almost anything (Gupta and Banerjee, 2015; Serajudinn et al., 2013) and convert it effectively for growth....

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  • ...Clarias gariepinus feed on almost anything (Gupta and Banerjee, 2015; Serajudinn et al., 2013) and convert it effectively for...

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Journal ArticleDOI
TL;DR: According to this study, Otolith size depends on the fish length and fish weight and the regression coefficients between the relationship of fish lengthand fish weight with otolith measurements was found to be the best indicator for estimating the growth of fish.
Abstract: The aim of this study was to determine a correlation between the length, width and weight of otoliths and the length and weight of fish samples of Amblypharyngodon mola (Hamilton,1822), a Rasborine fish caught from Middle Ganga region. Total length (TL) measurements were made with a 1mm precision fish length measuring scale. Image J software was used for measuring otolith length and width. This study shows strong correlation between fish length (TL), otolith length (OL) and width (OW), and similarly shows the correlation between Fish weight (TW) with otolith mass (test, P<0.05). According to this study, Otolith size depends on the fish length and fish weight and the regression coefficients between the relationship of fish length and fish weight with otolith measurements was found to be the best indicator for estimating the growth of fish. Key words: Amblypharyngodon mola, Rasborine fish, otolith morphometry.

2 citations


Cites background from "Length–weight relationship of Ambly..."

  • ...In a study conducted in two groups of fish length<7 cm and >7 cm, a strong positive and significant length weight relationship was observed (Piska and Waghray, 1986; Gupta and Banergee, 2015)....

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References
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Journal ArticleDOI
TL;DR: The present paper is an account of some of the investigations on the biology of the perch in Windermere, which are being conducted in connexion with a trap-fishery experiment, which revealed the relative complexity of the interrelationships of length, weight and condition.
Abstract: The present paper is an account of some of the investigations on the biology of the perch (Perca fluviatilis Linn.) in Windermere, which are being conducted in connexion with a trap-fishery experiment (Worthington, 1950). This experiment is mainly a study of populations, but it has been necessary simultaneously to investigate the general biology of the perch, particularly the growth and related aspects. The computation of a formula to express the length,weight relationship and provide a means of interconverting measurements of length and weight, revealed the relative complexity of the interrelationships of length, weight and condition. Condition in turn was found to be correlated with the seasonal changes in gonad development and growth, and the importance of the effect of stomach contents on weight had also to be assessed. It was decided, therefore, to combine these separate but interrelated aspects in one paper. The main part of the paper is devoted to the questions of length-weight relationship and condition. A brief review of the fundamental bases for the concepts of length-weight relationship and condition and of some of the methods of analysis of length-weight data precedes an account of the application of the chosen methods to the present material and its results. This is followed by an account of seasonal changes in gonad weights. A brief account is then given of the rather scanty data available on the weight of stomach contents. The seasonal changes in condition are then described and, finally, some of the results are summarized, combined and discussed as a picture of the seasonal cycle in the Windermere perch. In the statistical analysis of the length-weight relationship the data for only one group of fish are given in full (Tables i and 2) as an example of the method of computation used for all the groups. Again, in the section on seasonal changes in gonad weight and condition Figs. 2-7 are based partly on tables of data which are not published. The full tables have been deposited with the Freshwater Biological Association, from whom copies can be obtained.

3,332 citations

Journal ArticleDOI
TL;DR: A historical review, a meta-analysis, and recommendations for users about weight–length relationships, condition factors and relative weight equations are presented, indicating a tendency towards slightly positive-allometric growth (increase in relative body thickness or plumpness) in most fishes.
Abstract: Summary This study presents a historical review, a meta-analysis, and recommendations for users about weight–length relationships, condition factors and relative weight equations. The historical review traces the developments of the respective concepts. The meta-analysis explores 3929 weight–length relationships of the type W ¼ aL b for 1773 species of fishes. It shows that 82% of the variance in a plot of log a over b can be explained by allometric versus isometric growth patterns and by different body shapes of the respective species. Across species median b ¼ 3.03 is significantly larger than 3.0, thus indicating a tendency towards slightly positive-allometric growth (increase in relative body thickness or plumpness) in most fishes. The expected range of 2.5 < b < 3.5 is confirmed. Mean estimates of b outside this range are often based on only one or two weight–length relationships per species. However, true cases of strong allometric growth do exist and three examples are given. Within species, a plot of log a vs b can be used to detect outliers in weight–length relationships. An equation to calculate mean condition factors from weight–length relationships is given as Kmean ¼ 100aL b)3 . Relative weight Wrm ¼ 100W/ (amL b m ) can be used for comparing the condition of individuals across populations, where am is the geometric mean of a and bm is the mean of b across all available weight–length relationships for a given species. Twelve recommendations for proper use and presentation of weight–length relationships, condition factors and relative weight are given.

3,227 citations

Journal ArticleDOI
TL;DR: Methods for assessment of fish production in fresh waters, Methods for assessing fish production of fresh waters as discussed by the authors, Methods for assessing fish production from fresh waters in the Persian Gulf, Iran.
Abstract: Methods for assessment of fish production in fresh waters , Methods for assessment of fish production in fresh waters , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی

2,191 citations

Book
01 Jan 1989
TL;DR: In this paper, the authors introduce tropical fish stock assessment, and introduce the concept of tropical fishes stock assessment and its application in the stock assessment of tropical fish stocks, including tropical fishes.
Abstract: Introduction to tropical fish stock assessment , Introduction to tropical fish stock assessment , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی

1,948 citations