scholarly journals Abundance and Length-Weight Relationship of Fishes from Sungai Sepang Besar, Selangor

2019 ◽  
Vol 7 (4.14) ◽  
pp. 26
Author(s):  
N A Ya ◽  
H R Singh
Keyword(s):  
Habitat Use ◽  
Species Conservation ◽  
Mesh Size ◽  
Allometric Growth ◽  
Gill Nets ◽  
Weight Relationship ◽  
The Family ◽  
Relationship Of ◽  
Conservation And Management

This study was conducted to determine the abundance and the length-weight relationship of fishes of Sungai Sepang Besar (SSB), Selangor. A total of 832 individuals from 32 families comprising 50 species were collected from April 2014 to February 2015 by utilizing gill nets of various mesh size (1.25, 2.25, 2.50, 2.75, 3 and 4.5 inch) and long lines. The family Toxotidae was most abundant with a total of 474 individuals sampled comprising 2 species namely, Toxotes jaculatrix (n=288) and Toxotes chatareus (n=186). The Shannon-Weiner Index (2.37) and the Pielou Evennes (0.21) was low but the Margalef’s richness (7.29) was relatively high. Arius sagor, Photopectoralis bindus, Toxotes jaculatrix, Thryssa dussumieri, and Stolephorus indicus demonstrated positive allometric growth (b>3) while Plotosus lineatus and Toxotes chatareus showed negative allometric growth (b<3). Understanding abundance and the length-weight relationship of fish is important not only for species conservation and management, but also their habitat use.   

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 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 Size Distribution and Growth of young Payangka Fish, Ophieleotris aporos (Bleeker) from Lake Tondano

2017 ◽  
Vol 5 (2) ◽  
pp. 189
Author(s):  
Mayangsari Kimberli Susanto ◽  
Nego E. Bataragoa ◽  
Ruddy D Moningkey
Keyword(s):  
Size Distribution ◽  
Class Size ◽  
Mesh Size ◽  
Fish Growth ◽  
Allometric Growth ◽  
Weight Growth ◽  
Absolute Length ◽  
Relationship Of ◽  
Source Of Information ◽  
Size Mode

The research was conducted at the location of Lake Tondano, Minahasa District.The young payangka fish, locally known as nike fish by fishermen of the area. This study aims to determine the size distribution, length-weight relationships and to know the captivity growth in the aquarium. The research is expected to be a source of information about the fish of young payangka (Nike) and be able to contribute on the efforts of nike fish management in Lake Tondano for the future. Sampling is done by using a triangular shaped trap (sibusibu) with a length of 4m, width of 1.30m (top), and a mesh size of 0.5mm. The length frequency distribution with the size mode appeared most during the first of observation was in the range of 13.5 to 15.4 class size and changed in size in the third week of the 19.5-21.4 class sizes. Later in the fifth week the mode is in the range of 15.5-17.4 class size and changes in size in the seventh week at the range of 23.5-25.4 class size. The length-weight relationship of the study was showed by allometric growth (b = 2.70; b <3) which means the length increases faster than weight gain. Absolute weight growth of 0.2532g was recorded and absolute length growth of 10.12mm for 12 weeks was observed as well. Growth of a relatively large weight gained with value of 0.067mg occurs between the seventh week and the eighth week.Keywords : Nike Fish, growth, Tondano ABSTRAKPenelitian  ini dilaksanakan di lokasi Danau Tondano Kabupaten Minahasa. Ikan payangka muda dikenal dengan sebutan  ikan nike oleh masyarakat lokal. Penelitian ini bertujuan untuk mengetahui distribusi ukuran, hubungan panjang-berat dan untuk mengetahui pertumbuhan yang di pelihara di akuarium. Manfaat penelitian yaitu diharapkan dari penelitian ini dapat menjadi sumber informasi mengenai ikan payangka serta payangka muda (Nike) dan mampu memberikan kontribusi bagi upaya pengelolaan ikan nike di Danau Tondano di masa yang akan datang. Pengambilan sampel dilakukan dengan menggunakan alat tangkap serok (sibusibu) yang berbentuk segitiga dan memiliki ukuran panjang 4m, lebar 1,30m (bagian atas), dan ukuran mata jaring 0,5mm. Distribusi frekuensi ukuran panjang dengan modus atau ukuran yang paling banyak muncul pada minggu pertama terdapat pada kelas ukuran 13,5-15,4 dan mengalami perubahan ukuran pada minggu ketiga pada kelas ukuran 19,5-21,4. Selanjutnya pada minggu kelima modusnya ada pada kelas ukuran 15,5-17,4 dan mengalami perubahan ukuran pada minggu ketujuh  di kelas ukuran 23,5-25,4. Hubungan panjang dan berat dari penelitian didapatkan hasil pertumbuhan alometrik (b=2,70),  b<3 yang artinya pertambahan panjang lebih cepat dari pertambahan berat. Pertumbuhan berat mutlak sebesar 0,2532g dan pertumbuhan panjang mutlak sebesar 10,12mm selama 12 minggu. Pertumbuhan berat yang relative besar nilainya yaitu 0.067mg terjadi antara minggu ketujuh dengan minggu kedelapan.Kata kunci : Ikan Nike, Pertumbuhan, Tondano

scholarly journals FOOD HABITS AND LENGHT-WEIGHT RELATIONSHIP OF LUKAS FISH (Labiobarbus leptocheilus Valenciennes) IN GAJAH MUNGKUR RESERVOIR CENTRAL JAVA

2017 ◽  
Vol 3 (2) ◽  
Author(s):  
Moh Rasyid Ridho ◽  
Enggar Patrino ◽  
Agus Djoko Utomo ◽  
Siti Nurul Aida
Keyword(s):  
Growth Pattern ◽  
Food Habits ◽  
Laboratory Analysis ◽  
Allometric Growth ◽  
Weight Relationship ◽  
Central Java ◽  
Methods Of Analysis ◽  
Relationship Of

The Research about the food habits and length-weight relationship of Labiobarbus leptocheilus Valenciennes was conducted from May to September 2010. The aims of this research were to find out the food habits and to analyze the growth pattern of Labiobarbus leptocheilus Valenciennes. The sampling of fishes was conducted on May 2010 in the Gajah Mungkur Reservoir, Central Java. The sampling of fishes was conducted by using survey on the landing place of fishes (TPI Mina Tirta). The methods of analysis of food habits by using the Index of preponderance. The results of this research obtained were 19 samples of Labiobarbus leptocheilus Valenciennes, the length between 15-20 cm, with the weight between 40-90 grams. Labiobarbus leptocheilus Valenciennes had the negative allometric growth pattern (b <3). The laboratory analysis of food habits showed that the food habits of Labiobarbus leptocheilus Valenciennes were detritus with Index of Preponderance (IP) 82.95% and plankton with IP 17.05%.Keywords: food, habits, length-weight, relationship, Labiobarbus leptocheilus

scholarly journals Length-weight relationship, condition factor, and distribution of spotted barb (Barbodes binotatus Valenciennes, 1842) in Lake Tamblingan Bali

2021 ◽  
Vol 21 (2) ◽  
pp. 185-197
Author(s):  
Nyoman Dati Pertami ◽  
I Nyoman Yoga Parawangsa
Keyword(s):  
Aquatic Plants ◽  
Condition Factor ◽  
Mesh Size ◽  
Growth Patterns ◽  
Fish Sample ◽  
Allometric Growth ◽  
Volcanic Lake ◽  
Relationship Analysis ◽  
Weight Relationship ◽  
Endorheic Basin

Tamblingan Lake is a volcanic lake located in the caldera of  Mount Lesung a rain-fed lake in a confined endorheic basin and there is no inflow or outflow. Nyalian is a type of fish from the Cyprinidae family that is  quite common compared to other fish in its class in Tamblingan Lake. Information on the growth and distribution of these fish parameters in Tamblingan Lake does not exist. This study aims to analyze and explain the growth patterns of  Barbodes binotatus, especially the length-weight relationship, condition factor, and their distribution in the waters of  Tamblingan Lake. The research was conducted in Tamblingan Lake from January to June 2019 using a modify gill nets with the mesh size  0.5; 1.0; 1.5; 2.0; 2.5; 3.0 in centimeter. The sampling done in five locations. The length-weight relationship analysis used the power regression. The fish sample found was 204 individuals during the study with a range of total length was 5.2 – 15.0 cm. The equation of length-weight relationship is W = 0.0051 L3.387. The value of b formed based on this equation is 3.387 with a positive allometric growth pattern.The condition factor values ranged from 0.587 to 1.246. Barbodes binotatus spread in the litoral area where there are many aquatic plants. This information of nyalian fish could use as the basis for fish resource management in Tamblingan Lake.

Morphometrics and length-weight relationship of Schizothoraxcurvifrons Heckel 1838 in River Jhelum, Kashmir, India

2016 ◽  
Author(s):  
Tasaduq H. Shah ◽  
Sauliheen Qadri ◽  
M. H. Balkhi ◽  
Bilal A. Bhat ◽  
F. A. Bhat ◽  
...  
Keyword(s):  
B Value ◽  
Cyprinid Fish ◽  
Allometric Growth ◽  
Morphometric Characters ◽  
Fishery Resource ◽  
Pooled Data ◽  
Weight Relationship ◽  
Highly Correlated ◽  
Relationship Of

Schizothorax curvifrons, an indigenous cyprinid fish of Kashmir, forms an important coldwater fishery resource of the valley. This study was aimed to describe the morphometrics and length-weight relationship of S. curvifrons in River Jhelum Kashmir. The various morphometric characters showed high co-efficient of correlation (r) values, indicating that the characters were highly correlated to each other. The length-weight relationship was established logarithmically as Log W = -3.9323 + 2.5863 Log L (r2=0.746) for males, Log W = -4.1708 + 2.6852 (r2=0.745) Log L for females and Log W = -3.9975 + 2.6138 Log L (r2=0.746) for pooled data. The b value (2.6138) was found to be significantly different from 3 indicating negative allometric growth.

Length-weight relationship of a newly described catfish Pangasius silasi Dwivedi et al., 2017 from Nagarjuna Sagar Dam, Telengana, India

2020 ◽  
Vol 67 (2) ◽  
Author(s):  
T. T. Ajith Kumar ◽  
Santosh Kumar ◽  
Kuldeep K. Lal
Keyword(s):  
Sustainable Management ◽  
Natural Waters ◽  
Condition Factor ◽  
Regression Coefficient ◽  
Allometric Growth ◽  
Weight Relationship ◽  
Average Condition ◽  
Males And Females ◽  
Relationship Of ◽  
Management And Conservation

The length-weight relationship of a newly described catfish Pangasius silasi Dwivedi et. al., 2017 was studied from 88 specimens collected from the native distribution range of the species i.e. Nagarjuna Sagar Dam, Telengana, India. The total length and weight of the sampled fishes ranged from 290 to -590 mm and 240 to 2300 g respectively. Results of regression analysis showed that the regression coefficient (r²) values varied from 0.985 to 0.989. The average condition factor observed was 1.04 and 0.98 for males and females respectively. Positive allometric growth and condition factor of the species indicated the potential of the species for aquaculture. The information generated will also be useful in sustainable management and conservation of the species in natural waters.

The history, biology, and taxonomy of the Cytophaga group

1977 ◽  
Vol 23 (12) ◽  
pp. 1599-1653 ◽  
Author(s):  
Penelope J. Christensen
Keyword(s):  
Vegetative Cell ◽  
Cell Structure ◽  
Species Conservation ◽  
Species Differentiation ◽  
Historical Account ◽  
The Family ◽  
History Of ◽  
Definition Of ◽  
Relationship Of ◽  
The Relationship

The first section of this review covers the important characteristics of the genera Cytophaga and Sporocytophaga. The topics discussed include vegetative cell structure, the spreading habit, and degradation of macromolecules.A historical account of these two genera follows, together with a discussion on the definition of, and species differentiation within the genus Cytophaga, and on the taxonomy of Sporocytophaga.The third section deals with the relationships of the cytophagas with the flavobacteria and includes a brief history of Flavobacterium, reassignation of some species to Cytophaga, differentiation from Cytophaga, and a discussion on the definition of the genus Flavobacterinm.This is followed by a section dealing with the relationship of Cytophaga with the flexibacteria, starting with an introduction to the diversity of flexing organisms and taxonomic developments, and proceeding with the differentiation within the family Cytophagaceae, and species differentiation in Flexibacter.The concluding section includes a proposed redefinition of Cytophaga, a proposal regarding species conservation in this genus, and discussions on the relationship between the cytophagas and the myxobacteria and on the significance of cytophagas in the environment.The characteristics of all described species of Cytophaga, Flexibacter, and relevant flavobacteria are tabulated and a bibliography is presented.

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

Studies on Length-Weight Relationship of a Hill-Stream Loach, Schistura cupicola (McClelland)

2009 ◽  
Vol 24 ◽  
pp. 126-129 ◽  
Author(s):  
Aman Ansumal ◽  
Bharat Raj Subba
Keyword(s):  
Body Weight ◽  
Natural History ◽  
Correlation Coefficient ◽  
Regression Coefficient ◽  
Total Body Weight ◽  
Least Square ◽  
Allometric Growth ◽  
Weight Relationship ◽  
Total Body ◽  
Relationship Of

The study of length-weight relationship of a hill-stream loach, Schistura rupicola McClelland collected from Lampengwa Khola, Nepal was done using the least square formula W=aLTb. The values of 'a' and 'b' calculated from the measurement of total length and total body weight were -2.1431 and 3.0508 respectively. The computed value of correlation coefficient (r) was 0.9970.  Key words: Correlation coefficient; Regression coefficient; Allometric growth; Body weight.  Journal of Natural History MuseumVol. 24, 2009Page : 126-129 

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