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 Mudskipper, periophthalmodon schlosseri (pallas) from the Naf river

2013 ◽  
Vol 47 (4) ◽  
pp. 449-452 ◽  
Author(s):  
BK Saha
Keyword(s):  
Sex Ratio ◽  
Standard Length ◽  
Head Length ◽  
Caudal Peduncle ◽  
Snout Length ◽  
Weight Relationship ◽  
Total Length ◽  
Periophthalmodon Schlosseri ◽  
The Mean

A study on morphometrics, meristics sex ratio, ovary condition of Periophthalmodon schlosseri was conducted in 2001. The mean of total length (49.63 + 5.99 mm), standard length (40.84 + 5.30 mm), snout length (4.12 + 0.65 mm), head length (9.86 + 1.39 mm), height of body (6.89+1.24 mm) and the length of caudal peduncle (6.96 + 1.08 mm) were calculated. The length-weight relationship was determined as TW = 0.00004639+2.5882 TL. The fin formula was D1 . 8-9; D2 .1/10-13; P1 . 11-14; P2 . 11-14; A. 1/11. The sex ratio was found to be 1:0.63. The average of ovary length (6.2 +0.84 mm), ovary breadth (3.54 +0.95 mm) and diameter of ova (0.22 +0.04 mm) were also determined. Bangladesh J. Sci. Ind. Res. 47(4), 449-452, 2012 DOI: http://dx.doi.org/10.3329/bjsir.v47i4.14076

scholarly journals Some aspects of biology of the bar-eyed goby Glossogobius giuris (Hamilton 1822) (Perciformes: gobiidae) from Netrakona

2016 ◽  
Vol 42 (1) ◽  
pp. 95-106
Author(s):  
Bimal Kanta Saha ◽  
Md Fuad Hassan ◽  
Aparna Saha
Keyword(s):  
Standard Length ◽  
Head Length ◽  
Snout Length ◽  
Weight Relationship ◽  
Total Length ◽  
The Mean ◽  
Glossogobius Giuris ◽  
Body Parameters

The investigation was conducted on some aspects of biology viz. morphometrics, meristics, length-weight relationship and coefficient of condition of the Bar-eyed goby Glossogobius giuris. The mean of total length (TL) (94.42 ± 18.52 mm), standard length (SL) (73.13 ± 3.45mm), pre-dorsal length (PDL) (28.8 ± 7.32mm), head length (HL) (23.9 ± 4.87mm), snout length (SnL) (8.15 ± 1.9 mm) and height of body (HB) (14.17 ± 3.29mm) were determined.The relationships between the total length and other body parameters were found to be positively correlated and highly significant. The fin formula is D1.6; D2.1/9-10; P1.17-21; P2.1/5; A.1/9; C.17. The length-weight relationships of combined sex of G. giuris were determined as Log TW = -4.802 + 2.857 Log TL. The coefficient of conditions from the ko of combined sex and from the kc of combined sex was determined as 0.834 ± 0.132 and 0.827 ± 0.027, respectively. Kn values of combined sex were found to be 1.001 ± 0.156.J. Asiat. Soc. Bangladesh, Sci. 42(1): 95-106, June 2016

scholarly journals Population structure and reproductive biology of Cichla kelberi (Perciformes, Cichlidae) in Lobo Reservoir, Brazil

2008 ◽  
Vol 6 (2) ◽  
pp. 201-210 ◽  
Author(s):  
Jussara E. de Souza ◽  
Evelise N. Fragoso-Moura ◽  
Nelsy Fenerich-Verani ◽  
Odete Rocha ◽  
José R. Verani
Keyword(s):  
Sex Ratio ◽  
Condition Factor ◽  
Reproductive Activity ◽  
Reproductive Period ◽  
High Fecundity ◽  
Long Period ◽  
Total Length ◽  
Relative Condition Factor ◽  
Central Value ◽  
Large Output

The structure of Cichla kelberi population was characterized regarding the sex ratio, total length composition and some reproductive characteristics. The specimens were collected in two periods, from November 2002 to November 2003 and from December 2004 to May 2006. The sex ratio was significantly different than 1:1. The total length varied from 3.4 to 40.1 cm, with individuals in the shortest length classes occurring throughout the year, but with greater incidence in the warmer periods. Females and males reached similar lengths and there was no difference between the sexes regarding the length-weight relationship. The estimated values of condition factor were near the central value of 1.0 and decreased during the cooler months, coinciding with periods of lower reproductive activity. Individuals with mature or semi-spent gonads occurred from November to April, indicating that Cichla kelberi reproduces for a long period of time. The spawning is partitioned, with an average absolute fecundity of 6072 oocytes (from 5220 to 6908 oocytes). The high relative condition factor values, long reproductive period, large output of fingerlings and high fecundity are biological conditions that indicate the species is well adapted in this reservoir.

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 Some Biological Aspects of Al - Shabbot Arabibarbus grypus (Heckel, 1843) in Al-Diwanyia River, Middle of Iraq

2019 ◽  
Vol 27 (2) ◽  
pp. 306-316
Author(s):  
Mohanad O. Abdullah Al-Jubouri ◽  
Abdul-Razak M. Mohamed
Keyword(s):  
Sex Ratio ◽  
Condition Factor ◽  
Age Groups ◽  
Allometric Growth ◽  
Relative Condition Factor ◽  
Fish Catch ◽  
Total Fish ◽  
Biological Aspects ◽  
The Mean ◽  
Somatic Index

      Some biological characteristics of shabbot, Arabibarbus grypus (Heckel, 1843) in the Al-Diwaniya River, middle of Iraq were studied from October 2016 to September 2017. Water temperature ranged from 10.2oC in March to 32.8oC in August. A total of 853 fish were caught by seine, gill and cast nets and electro-fishing. A. grypus constituted about 6.27% of the total fish catch. The length-weight relationship was W=0.021*L2.7548 revealing an allometric growth. The mean relative condition factor was 0.91. Five age groups wore recorded and their mean total lengths were 20.2, 32.0, 39.0, 43.9 and 48.4 cm, respectively. The growth model of the species was  Lt= 58 [1-e -0.39 (t-0.313)]. The growth performance index (Φ) of A. grypus was computed as 3.11. The study declares that the species is a omnivore, feeding mainly on aquatic plants, insects, algae and detritus. The overall sex ratio (female: male) was 1.47:1. The highest values of gonado- somatic index (GSI) were 4.20 for female and 1.78 for males in April. The fecundity of the species ranged from 75600 to 124200 eggs. 

scholarly journals On the fecundity and sex-ratio of Botia Dario (Hamilton) (Cypriniformes : Cobitidae)

1970 ◽  
Vol 26 ◽  
pp. 27-29 ◽  
Author(s):  
M Afzal Hussain ◽  
Mst Rehana Khatun ◽  
M Altaf Hossain
Keyword(s):  
Body Weight ◽  
Sex Ratio ◽  
Standard Length ◽  
Female Ratio ◽  
Ovary Weight ◽  
Total Length ◽  
Length Standard ◽  
The Mean ◽  
The Relationship ◽  
Male To Female

A total of 1183 Botia Dario (Hamilton) samples were collected from Rajshahi (Shaheb Bazar, Binodpur Bazar, Talaimari Bazar, Kazla Bazar and Godagari) during the period from January, 2002 to August, 2003 to study the fecundity, sex-ratio, relationship between fecundity and total length, standard length, body weight, ovary length as well as ovary weight. The mean fecundity was calculated as 31833.50±10313.42 with a range of 5245 to 53754 in fishes ranging in total length from 96 mm to 135 mm (mean 115.50±12.11 mm) and in body weight from 14.51 g to 43.29 g (mean 29.71±6.91 g). The relationship between the fecundity (F) and total length (TL), standard length (SL), body weight (BW), ovary length (OL) and ovary weight (OW) were found to be linear with the ‘r’ values 0.94, 0.94, 0.95, 0.92 and 0.98, respectively. The ovum diameter ranged from 0.3 to 0.72 mm and the mean diameter was calculated as 0.518±0.06 mm. The male to female ratio was 1:0.61. Key words: Botia dario, fecundity, sex-ratio. Univ. j. zool. Rajshahi Univ. Vol. 26, 2007. pp. 27-29

scholarly journals Studies on Length-weight and Length-length Relationships, Relative Condition Factor and Fulton’s Condition Factor of Hemiculter leucisculus (Pisces: Cyprinidae) from the Southwestern Caspian Sea Basin

Our Nature ◽  
2013 ◽  
Vol 11 (1) ◽  
pp. 25-30
Author(s):  
H. Mousavi-Sabet ◽  
A. Habibi ◽  
O. Bagherpur
Keyword(s):  
Caspian Sea ◽  
Condition Factor ◽  
Fork Length ◽  
Allometric Growth ◽  
Growth Trend ◽  
B Values ◽  
Total Length ◽  
Relative Condition Factor ◽  
Males And Females ◽  
Hemiculter Leucisculus

In this study, length-weight (LWR) and length-length relationships (LLRs), relative condition factor (krel) and Fulton’s condition factor (k) of 235 Hemiculter leucisculus Basilewsky were determined between the periods of March 2012 to February 2013 in Sefidroud River, in the Southwestern Caspian Sea basin. The maximum recorded total length for males and females were 16.90 cm and 18.10 cm, respectively. The length-length relationships among the total length (TL), fork length (FL) and standard length (SL) for H. leucisculus were found to be highly significant (r2>0.968, p<0.001). The length-weight relationship shows the obtained b values for males, females and male-females were 2.549, 2.680 and 2.465 respectively, which indicated a negative allometric growth trend of this species. Also, relative condition factor (Krel) for males, females and male-females were 0.710, 0.622 and 0.743 respectively and Fulton’s condition factor (K) for males, females and male-females were 0.922, 0.842 and 0.843 respectively. These results will be useful for ?shery managers to impose adequate regulations for sustainable ?shery management.DOI: http://dx.doi.org/10.3126/on.v11i1.8240 Our Nature Vol.11(1) 2013: 25-30

scholarly journals Biologie De La Reproduction Du Sciaenidae Pseudotolithus Elongatus Dans La Lagune Ebrie (Cote d’Ivoire)

2016 ◽  
Vol 12 (6) ◽  
pp. 327
Author(s):  
Koné Tiéhoua ◽  
Kouakou Fokouo Kessia Irène ◽  
Konan Kouassi Sylvain ◽  
N’Da Konan
Keyword(s):  
Sex Ratio ◽  
Condition Factor ◽  
Size Class ◽  
Breeding Period ◽  
Total Length ◽  
Mean Diameter ◽  
Liver Somatic Index ◽  
The Mean ◽  
First Maturity ◽  
Somatic Index

The study of reproduction of Pseudotolithus elongatus in the Ebrie lagoon was investigated between July 2013 and June 2015 on a whole of individuals of 550 specimens. the total length ranges from 14.5 to 42.7 cm. The monthly evolution of the gonado-somatic index (GSI), the liver-somatic index (LSI), the condition factor (K), the Sex-ratio, the fecundity, the diameter of eggs revealed that this species spawns throughout the year but the main breeding period was in raining season. Sex-ratio observed was in favour of females (1: 1. 14; X2 = 2.26; p > 0.05). The percentage of mature specimens by sexes was calculated for each size class. Total length at first maturity was 21.06 cm for females and 20.21cm for males. The ripe ovaries contained 39883-814757 eggs. The relative fecundity was 216-1979 eggs per g of body weight of females. And the mean diameter of eggs is 336 ±138 microns.

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

scholarly journals Reproductive Biology of the Mola Carplet Amblypharyngodon mola (Hamilton) (Cypriniformes: Cyprinidae) from Netrakona Water

1970 ◽  
Vol 44 (3) ◽  
pp. 377-379 ◽  
Author(s):  
Bimal Kanta Saha ◽  
M Rafiqul Islam ◽  
Aparna Saha ◽  
M Altaf Hossain
Keyword(s):  
Sex Ratio ◽  
Key Words ◽  
Reproductive Biology ◽  
Standard Length ◽  
Mean Value ◽  
Total Weight ◽  
Total Length ◽  
The Mean

Some aspects of the reproductive biology viz. sex ratio, fecundity and reproductive periodicity of Amblypharyngodon mola were studied during March 2004 through February 2005 in Netrakona. Sex ratio was found to be 1:2.03. Fecundity varied from 1,291 to 12,797 with a mean value 5,751.46 ± 3,321.73 eggs. The relationships between Fecundity (F) and Total Length (TL), Standard Length (SL), Total Weight (TW), Gonadal length (GL) and Gonadal Weight (GW) were calculated and found to be highly significant. The mean of ova diameter was 1.4 ± 0.35mm. Different methods used to study the reproductive periodicity showed that the periodicity of A. mola starts from March and continues up to August with a peak in May. Key words: Reproductive biology, Reproductive periodicity, Amblypharyngodon mola. DOI: 10.3329/bjsir.v44i3.4414 Bangladesh J. Sci. Ind. Res. 44(3), 377-379, 2009   

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