Length–weight relationship of six notothenioid species from sub‐Antarctic waters (Beagle Channel, Argentina)

2018 ◽  
Vol 35 (2) ◽  
pp. 597-599 ◽  
Author(s):  
Daniel A. Fernández ◽  
Daniel O. Bruno ◽  
Facundo M. Llompart
Keyword(s):  
Beagle Channel ◽  
Weight Relationship ◽  
Antarctic Waters ◽  
Relationship Of ◽  
Notothenioid Species

scholarly journals Length-weight relationship of greeneye fish (Chlorophthalmus agassizi) obtained from coast off Hatay (Northeast Mediterranean)

2015 ◽  
Vol 32 (4) ◽  
pp. 209-211
Author(s):  
Asiye Başusta ◽  
Metin Çalta ◽  
Tuncay Ateşşahin ◽  
Fatih Volkan Özel
Keyword(s):  
Weight Relationship ◽  
Relationship Of

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

scholarly journals Observations on the age and growth of Varicorhinus damascinus (Val.) in Tigris river at Salahuldin province – Iraq

2008 ◽  
Vol 5 (2) ◽  
pp. 243-248
Author(s):  
Baghdad Science Journal
Keyword(s):  
Regression Coefficient ◽  
Age Groups ◽  
Age And Growth ◽  
Gill Nets ◽  
The Third ◽  
Weight Relationship ◽  
Tigris River ◽  
Straight Line ◽  
Males And Females ◽  
Relationship Of

Age and growth of Varicorhinus damascinus (Val.) in Tigris river at Salahuldin province have been investigated. Monthly samples were taken during the period from September 1999 to August 2000, using small-meshed gill nets. The age data showed that there were six age groups and the dominant age groups were (III – IV) for both sexes. The results of the present study revealed that the increment in length of V. damascinus at the sites of study showed a tendency to decrease with the increase in age, after the third year of life in both sexes. The length-weight relationship of males and females were calculated and demonstrated in a straight line logarithmic formula, as follows: Log W = 1.5404 + 2.6885 log L for males r = 0.95 (P > 0.05) Log W = 1.6723 + 2.7877 log L for females r = 0.77 (P > 0.05) The values of the regression coefficient (b) indicated that the growth of both sexes of V. damascinus was allometric..

scholarly journals Length-weight relationship of cyprinid fish, Rasbora daniconius (Hamilton-Buchanan) from Sharavathi Reservoir, Karnataka

2005 ◽  
Vol 21 (1) ◽  
pp. 2140-2141 ◽  
Author(s):  
K. Harish Kumar ◽  
B.R. Kiran ◽  
R. Purushotham ◽  
E.T. Puttaiah ◽  
S. Manjappa
Keyword(s):  
Cyprinid Fish ◽  
Weight Relationship ◽  
Relationship Of

scholarly journals Length-weight relationship of Threadfin Bream (Nemipterus sp.) in Village Malang Rapat Waters, Bintan Regency, Riau Island

2020 ◽  
Vol 13 (2) ◽  
pp. 449
Author(s):  
Rapita Rapita ◽  
Susiana Susiana ◽  
Rochmady Rochmady
Keyword(s):  
Growth Patterns ◽  
Allometric Growth ◽  
Fish Resources ◽  
Weight Relationship ◽  
Relationship Of

Village Malang Rapat waters are have the potential and habitat of kurisi fish resources (Nemipterus sp.). The research was to determine the length-weight relationship of kurisi fish (Nemipterus sp.) in Village Malang Rapat. Sampling of kurisi fish (Nemipterus sp.) in two months (October-November 2020) is taken once a week based on fishing grounds and habitat. Length-weight relationship of female and male kurisi fish (Nemipterus sp.) were y = 1,1568x2,0659 and y = 1,2123x1,8971 respectively, based on this value show that female and male kurisi fish (Nemipterus sp.) in Village Malang Rapat waters have negative allometric growth patterns (b < 3).

scholarly journals Short Communication: Density and length-weight relationship of mudskipper (Periophthalmus spp.) in the mangrove area of Kairatu Beach, Maluku, Indonesia

2020 ◽  
Vol 21 (11) ◽  
Author(s):  
Diana Taniwel ◽  
Fredy Leiwakabessy ◽  
Dominggus - Rumahlatu
Keyword(s):  
Dissolved Oxygen ◽  
Environmental Conditions ◽  
Short Communication ◽  
Sampling Technique ◽  
Sandy Beaches ◽  
Chemical Parameters ◽  
Mangrove Area ◽  
Weight Relationship ◽  
Physical Chemical ◽  
Relationship Of

Abstract. Taniwel D, Leiwakabessy F, Rumahlatu D. 2020. Short Communication: Density and length-weight relationship of mudskipper (Periophthalmus spp.) in the mangrove area of Kairatu Beach, Maluku, Indonesia. Biodiversitas 21: 5465-5473. Mudskippers (genus Periophthalmus) fish species inhabit mudflat, sandy beaches, and mangrove areas. Their daily activities are influenced by tidal rhythms. The aim of this research was to identify the species of mudskipper, their density, and length-weight relationship of more density species in the mangrove area of ​​Kairatu beach, Maluku, Indonesia. This research was conducted from July to August 2018, 3 sampling sites using purposive sampling technique. The physical-chemical parameters of environmental conditions (temperature, dissolved oxygen, salinity, and pH of water) were measured directly on location (in-situ), while the different mudskippers species present in the study sites were identified in the laboratory at the Pattimura University. Quantitative data on population density and length and weight of individuals were obtained for four Periophthalmus species. The physical-chemical parameters of environmental conditions in the three sampling stations were within the range of optimal values previously obtained for mudskipper species. The temperatures ranged from 30.01-30.05 oC, the dissolved oxygen ranged from 7.1-7.5 mg/L, the pH ranged from 7.3-7.5, and the salinity ranged from 5-7 ‰. The four mudskippers species identified in the sampling sites were (in density descending order): Periophthalmus argentilineatus (5.05 ind/m2), P. gracilis (1.5 ind/m2), P. malaccensis (0.4 ind/m2) and P. kalolo (0.3 ind/m2). The results of the regression analysis showed that there was no significant relationship between physical-chemical parameters to mudskipper density. The results of the length-weight relationship of the two most abundant species P. argentilineatus and P. gracilis a negative allometric length-weight relationship (b<3), while the P. kalolo and P. malaccensis indicated a positive allometric growth type (b>3).

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