scholarly journals Biological Parameters of Lethrinus nebulosus in the Arabian Gulf on the Saudi Arabian Coasts

2021 ◽  
pp. 23-31
Author(s):  
Jabeur Chédia
Keyword(s):  
Standard Length ◽  
Stock Assessment ◽  
Arabian Gulf ◽  
Fork Length ◽  
Saudi Arabian ◽  
Von Bertalanffy ◽  
Biological Parameters ◽  
Total Length ◽  
Length Relationship ◽  
Lethrinus Nebulosus

In the present study about 277 specimens of Lethrinus nebulosus were used to determine some biological parameters which are needed in stock assessment in the region of Arabian Gulf on the Saudi Arabian coasts. The period of spawning was estimated using maturity indexes to April, Mai and June. This species is gonochoric, nevertheless some cases of hermaphrodism are noted. The length relationships were determined showing a correlation between total length and standard length, and between total length and fork length. The weight- length relationship is allometric minorante. The model of Von Bertalanffy was estimated for the studied species and it is as follows:  Lt = 600 *(1-exp (-0.135*(t+1.69)) for both sexes, Lt = 600 (1-exp (-0.166*(t+0.746)) for females and Lt = 555 *(1-exp (-0.153*(t+1.62)) for males.

scholarly journals Length and Weight Relationships for 31 Species of Fishes Caught by Trawl Off the Arabian Sea Coast of Oman

2008 ◽  
Vol 13 ◽  
pp. 43
Author(s):  
Brett A. Human ◽  
Haithem Al-Busaidi
Keyword(s):  
Fish Species ◽  
Arabian Sea ◽  
Stock Assessment ◽  
Fork Length ◽  
Biological Parameters ◽  
Conversion Factors ◽  
Weight Measurement ◽  
Total Length ◽  
Commercial Species ◽  
Sea Coast

Length and weight measurement for 31f ish species encountered in the Arabian Sea , o f f t h e Oma n Coast, were collected by demersal trawling during March 2007 and March 2008. A total of 3,261 specimens were measured for total length, or fork length, where appropriate, and green weight. Several commonly caught commercial species undergo onboard processing (dressing) prior to packaging, and dressed weight to green weight regressions and conversion factors were calculated for 12 of these species. The relationships obtained in this study were compared with those of other  studies for the same fish species. These data are fundamental to understanding the biological parameters of fishes, and can be applied to fisheries stock assessment and management models. 

scholarly journals Some population characteristics of Oxynoemacheilus angorae (Steindachner, 1897) from the Perşembe Plateau meandering streams in Ordu, Turkey

2021 ◽  
Vol 29 (2) ◽  
pp. 100-107
Author(s):  
Serdar Yedier ◽  
Derya Bostanci ◽  
Nazmi Polat
Keyword(s):  
Condition Factor ◽  
Fork Length ◽  
Population Characteristics ◽  
Allometric Growth ◽  
Male And Female ◽  
Meandering Streams ◽  
Black Sea Region ◽  
Total Length ◽  
Length Relationship ◽  
Average Condition

Abstract The aim of the current study was to determine the length-weight relationship (LWR) and length-length relationship (LLR) with condition factor (K) values for Oxynoemacheilus angorae from the Perşembe Plateau meandering streams in Ordu, Turkey. A total of 65 fish specimens, which were caught with electrofishing gear, were examined. Fish standard length (SL), fork length (FL), total length (TL), and body weight (W) were determined. There were no statistical differences between the measurements of male and female O. angorae specimens; therefore, the female and male specimens were evaluated together in the current study. The LWR equation and determination coefficient of O. angorae were W = 0.014 TL2.7359 (r2 = 0.9659). The 95% confidence interval of the b value for the O. angorae specimens from the Perşembe Plateau meandering streams was 2.7261 to 2.7435. In the present study, it was determined that O. angorae specimens showed negative allometric growth. Calculations of O. angorae TL-SL, TL-FL, and FL-SL relationship equations and determination coefficients were as follows: TL = 0.2091+1.1646 SL, (r2 = 0.986); TL = 0.1341+1.0301 FL (r2 = 0.9914); and FL = 0.0998+1.1261 SL, (r2 = 0.9868), respectively. A new maximum total length was recorded for O. angorae in this study. The average condition factor value of O. angorae was 0.9954. This value could have indicated that this species was encountering some problems in this habitat. The O. angorae parameters determined were the first data reported for the Perşembe Plateau meandering streams in Ordu, Turkey (Middle Black Sea Region).

scholarly journals Length-Weight and Length-Length Relationships in Freshwater Garfish Xenentodon cancila (Ham.) from Muriyadhar, Sunsari, Nepal

2015 ◽  
Vol 26 ◽  
pp. 10-14
Author(s):  
Bharat Raj Subba ◽  
Satya Narayan Mehta ◽  
Shaligram Adhikaree
Keyword(s):  
Body Weight ◽  
Fresh Water ◽  
Growth Pattern ◽  
Standard Length ◽  
Allometric Growth ◽  
B Values ◽  
Total Length ◽  
Length Standard ◽  
Length Relationship ◽  
Xenentodon Cancila

Present paper attempts to describe length-weight (LW) and total length-standard length (TL and SL) relationships of fresh-water garfi sh Xenentodon cancila. Fish of different length and weight were caught using cast nets from Muriyadhar, Sunsari. The fish were kept in ice box in fresh condition and brought to fi sh laboratory, Department of Zoolog post Graduate Campus, Biratnagar. The data obtained from measurement were analysed using the formula W = aLb. The b values estimated for the total length and standard length in relation to body weight were 3.2202 and 3.2559 respectively. The values of b clearly indicate the allometric growth pattern and for total length and standard length relationship, the linear value of b was 0.3223.J. Nat. Hist. Mus. Vol. 26, 2012: 10-14

Age, growth and mortality of the garfish, Belone belone (L. 1761) in the Adriatic Sea

2012 ◽  
Vol 93 (2) ◽  
pp. 365-372 ◽  
Author(s):  
Barbara Zorica ◽  
Vanja Čikeš Keč
Keyword(s):  
Adriatic Sea ◽  
Growth Parameters ◽  
Fork Length ◽  
Mortality Rates ◽  
Von Bertalanffy ◽  
Positive Allometry ◽  
Von Bertalanffy Model ◽  
Total Length ◽  
Belone Belone ◽  
Conservation And Management

A sample of 3393 garfish, Belone belone (Linnaeus, 1761) was captured using a seine net between January 2003 and December 2008, along the eastern Adriatic Sea. The range in total length was 20.8–75.4 cm and in weight was 12.21–639.25 g. Length–length equations for converting size measurements (standard length and fork length to total length (TL)) were linear. In the length–weight relationship, positive allometry was established (b = 3.4818). Age, determined from sagittal otoliths, ranged from 1+ to 8+ years. The estimated von Bertalanffy model growth parameters for garfish were L∞ = 90.3 cm, K = 0.158 year−1, t0 = −0.109. Otolith weight was endorsed as a possible age predictor, as it showed highly exponential correlation with total garfish length and age (Wo = 0.0012 TL2.189; Wo = 0.568t1.486). These findings were used to examine mortality rates and exploitation in order to improve conservation and management of this pelagic species.

scholarly journals Biological Characteristics of European Perch (Perca fluviatilis L., 1758) Inhabiting Lake Ladik (Samsun, Turkey)

2016 ◽  
Vol 74 (4) ◽  
pp. 141-148 ◽  
Author(s):  
Semra Saygin ◽  
Savas Yilmaz ◽  
Okan Yazicioglu ◽  
Nazmi Polat
Keyword(s):  
Standard Length ◽  
Condition Factor ◽  
Fork Length ◽  
Perca Fluviatilis ◽  
Growth Equation ◽  
European Perch ◽  
Total Length ◽  
Length Standard ◽  
Perch Perca Fluviatilis ◽  
Von Bertalanffy Growth Equation

AbstractThe aim of this study was to determine the growth features of European perch (Perca fluviatilis L., 1758) inhabiting Lake Ladik. A total of 858 individuals were caught. The total length and weight ranged from 8.2 to 27.5 cm and from 7.16 to 365.20 g, respectively. The age of the females ranged between 1 and 7 years and the age of the males ranged from 1 to 5 years. The female to male ratio was 1:0.19. The von Bertalanffy growth equation parameters were determined as L∞=41.27 cm, W∞=1251.40 g, K=0.10 (year−1), t0 (year)=−1.98 for all samples. Length-weight relationship was calculated as W=0.0047TL3.358 for all specimens. Length-length relationships (total length-standard length, total length-fork length, standard length-fork length) were highly significant (r2>0.98). The mean condition factor value was obtained as 1.28 for all fish. Condition factor showed statistically significant increase according to length classes.

scholarly journals Biological properties of European bitterling Rhodeus amarus (Bloch, 1782) in Dinsiz Stream, Turkey

2020 ◽  
Vol 7 (2) ◽  
pp. 60
Author(s):  
Semra Benzer ◽  
Ali Gül
Keyword(s):  
Standard Length ◽  
Body Height ◽  
Fork Length ◽  
Biological Properties ◽  
Base Length ◽  
Pectoral Fin ◽  
Morphometric Characters ◽  
Dorsal Fin ◽  
Total Length ◽  
Fin Length

The aim of this article was to some morphometric characteristics of Rhodeus amarus from Dinsiz Stream. A morphological analysis of 21 morphometric characters were done. These characteristics  total length (TL); fork length (FL); standard length (SL); predorsal length; dorsal fin base length; dorsal fin length; head length; pretorbital length; eye diameter; postorbital length; interorbital distance; body height; preanal distance; anal fin base length; anal fin length; pectoral fin base length; pectoral fin length; ventral fin base length; ventral fin length; caudal peduncle depth and weight (W). The samples were measured weight to the nearest 0.01 g and total, fork and standard length to the nearest 0.01 mm. The total length (TL) and weight (W min-max) of the fish were 4.2- 7.1 cm and 1.699- 7.444 g, respectively.Keywords: Rhodeus amarus; European bitterling; morphometric properties; Dinsiz Stream Turkey

scholarly journals Some Aspects of Biology of Chola Punti Puntius Chola (Hamilton) from the Kangsa River

1970 ◽  
Vol 45 (4) ◽  
pp. 309-314
Author(s):  
Bi K Saha ◽  
A Saha
Keyword(s):  
Sex Ratio ◽  
Standard Length ◽  
Condition Factor ◽  
Fork Length ◽  
Head Length ◽  
Mean Values ◽  
Snout Length ◽  
Total Length ◽  
Relative Condition Factor ◽  
The Mean

The mean values of total length (75.89 ± 13.09 mm), standard length (54.98 ± 7.07 mm), fork length (60.86 ± 9.14 mm), head length (14.75 ± 2.05 mm), snout length (3.79 ± 0.61 mm), pre-dorsal length (31.53 ± 3.18 mm), height of body (20.2 ± 4.11 mm) and total weight (6.62 ± 3.55g) of combined sex of Puntius chola were calculated. Relationships between total length and standard length, fork length, head length, snout length and pre-dorsal length of Puntius chola were found to be linear, positive and highly significant. The length-weight relationship in male, female and combined sex were determined as Log W=-4.510+2.810 Log L, LogW=-4.204+2.685 Log L and Log W=4.465+2.808 Log L respectively. The mean values of condition factor from observed value (ko) of male, female and combined sex were determined as 1.36 ± 0.089, 1.599 ± 0.181 and 1.515 ± 0.192 respectively. The mean values of condition factor from calculated value (kc) of male, female and combined sex were found to be 1.362 ± 0.054, 1.6 ± 0.124 and 1.511 ± 0.075 respectively. The mean values of relative condition factor of male, female and combined sex were registered as 0.999 ± 0.044 , 0.999 ± 0.064 and 0.999 ± 0.112 respectively. Sex ratio was found to be 1:1. Key words: Standard length; Pre-dorsal length; Puntius chola; Morphomertric; Fish culture. DOI: 10.3329/bjsir.v45i4.7327 Bangladesh J. Sci. Ind. Res. 45(4), 309-314, 2010

scholarly journals Length-weight relationship, morphometric characters, and meristic counts of the coldwater fish Crossocheilus diplochilus (Heckel) from Dal Lake

2021 ◽  
Vol 29 (1) ◽  
pp. 29-34
Author(s):  
Muzamil Sidiq ◽  
Imtiaz Ahmed ◽  
Yahya Bakhtiyar
Keyword(s):  
Growth Rate ◽  
Body Size ◽  
Correlation Analysis ◽  
Standard Length ◽  
Fork Length ◽  
Meristic Characters ◽  
Morphometric Characters ◽  
Dal Lake ◽  
Total Length ◽  
Meristic Counts

Abstract Morphometric and meristic characters are very important for the identification of any fish specimen. The present study aims to describe the morphometric and meristic characters of the indigenous fish Crossocheilus diplochilus (Heckel) from Dal Lake. This fish is commonly known as Kashmir latia and is called tether locally. In the present study, the material analyzed was 70 specimens ranging in size from 6.9–13 cm (TL) with a mean length of 10.8 cm and a weight range of 3.2–24.0 g with a mean weight of 10.1 g. The parameters with the highest correlations with total length were standard length and fork length at 0.983 and 0.989, respectively. Correlation analysis showed that all morphometric characters changed proportionally as total length increased. The meristic counts analyzed in the present study remained constant in fish of different sizes indicating that they are independent of body size. The study of morphometric characters is very important to determine the growth rate of these fish, which, in turn, is required to properly manage its populations.

scholarly journals Length-weight and length-length relations for 21 fish species caught in Izmir Bay

2020 ◽  
Vol 61 (2) ◽  
pp. 197-204
Author(s):  
Ali Kara ◽  
Deniz Acarli ◽  
Akın Türker İlkyaz ◽  
Ali Özcan Babaoğlu
Keyword(s):  
Fish Species ◽  
Standard Length ◽  
Fork Length ◽  
T Test ◽  
Izmir Bay ◽  
Total Length ◽  
Student’S T ◽  
Student’S T Test

This study exhibits relationships between length-weight and length-length for 21 fish species caught in Izmir Bay. Coefficients a and b for the length-weight relationships (LWRs) and length-length relationships (LLRs) were calculated with W=aLb formulae and as equations of TL=a+bFL and TL=a+bSL respectively. Equations of length-length for converting standard length and fork length into total length and vice versa were proven linear. The involved relationships were significantly interrelated (R2>0.942). Values b in the LWRs varied from 2.21 to 3.96 (mean ± SE: 3.15 ± 0.08). The student’s t-test showed that 87.9% of values b were significantly different from 3.

scholarly journals Length-length relationships of elongate glass perchlet, Chanda nama (HAMILTON, 1822) from the old Brahmaputra river, Bangladesh

2022 ◽  
Vol 8 (3) ◽  
pp. 339-347
Author(s):  
Nelufa Aktar ◽  
Zoarder Faruque Ahmed ◽  
Mst Kaniz Fatema
Keyword(s):  
Standard Length ◽  
Fork Length ◽  
Coefficient Of Determination ◽  
Regression Analyses ◽  
Brahmaputra River ◽  
Total Length

The generalized length-length relationships of Chanda nama ((Hamilton, 1822) belongs to Ambassidae were studied separately for a period of a calendar year collected from the Old Brahmaputra River, Mymensingh, Bangladesh for male, female and combined populations. A total of 1170 specimens were examined where 599 were male and 571 were female. The standard length, fork length and total length of male ranged from 19 to 79 mm, from 23 to 90 mm, and 28 to 100 mm respectively. The standard length, fork length and total length of female were found from 15 to 81 mm, 24 to 89 mm, and from 29 to 100 mm respectively. The generalized relationships of standard length and fork length, fork length and total length, and standard length and total length of male, female and combined populations were FL = 1.08 SL+1.41, TL = 1.11 FL + 1.54 and TL = 1.20 SL+2.81; FL = 1.09 SL+1.23, TL = 1.12 FL+1.04 and TL = 1.22 SL+2.22; and FL = 1.09 SL+1.20, TL = 1.11 FL+1.27 and TL = 1.22 SL+2.38 respectively. The coefficient of determination (R2) revealed high values in all regression analyses. In length–length relationships, the coefficient of determination (R2) ranged from 0.973-0.990. The present findings of this study will be helpful for a well-organized and significant exploitation and regulation of the Chanda nama fishery in the Old Brahmaputra River and surrounding ecosystems. Res. Agric., Livest. Fish.8(3): 339-347, December 2021

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