scholarly journals Length-Weight Relationships and Condition Factors of Three Tilapine Species in an Abandoned Gold Mine Reservoir, Igun, Southwestern Nigeria

2019 ◽  
Vol 11 (2) ◽  
pp. 205-209
Author(s):  
Oluwadamilare E. OBAYEMI ◽  
Olusola O. KOMOLAFE ◽  
Oluwakemi V. OKUNOLA ◽  
Sakirat T. ASAFA ◽  
Mary A. AYOADE
Keyword(s):  
Fish Species ◽  
Oreochromis Niloticus ◽  
Condition Factor ◽  
Gold Mine ◽  
Southwestern Nigeria ◽  
Monthly Basis ◽  
B Values ◽  
Total Length ◽  
The Mean ◽  
Sarotherodon Galilaeus

This study investigated the length-weight relationships and condition factors of three fish species in an abandoned gold mine reservoir. The fishes were caught on monthly basis between August 2015 and July 2016 using gill nets and traps. The results showed that Coptodon zillii, Oreochromis niloticus and Sarotherodon galilaeus had a mean total length and mean weight of 15.52±4.64 cm and 95.80±66.27 g; 15.27±4.18 cm and 89.54±63.20 g; 15.57±4.80 cm and 102.0±85.81 g respectively. Also, the mean condition factor obtained for the fish species are 2.24±0.52 in C. zillii; 2.26±0.62 in O. niloticus and 2.27±0.46 in S. galilaeus. Similarly, the slope (b) values and correlation coefficient for the three fish species are 2.018 and 0.969 for C. zillii; 1.977 and 0.926 for O. niloticus and 2.436 and 0.965 for S. galilaeus. Furthermore, the total length, weight and condition factor between C. zillii, O. niloticus and S. galilaeus differ significantly (p>0.05). The study concluded that despite being an abandoned gold mine reservoir, the environment is well suitable for the fishes.

scholarly journals Length-Weight Relationships and Condition Factors of Several Nigerian Fish Species

2016 ◽  
Vol 8 (1) ◽  
pp. 21-26
Author(s):  
Timothy O. AMOO ◽  
Olaniyi O. KOMOLAFE
Keyword(s):  
Fish Species ◽  
Oreochromis Niloticus ◽  
Condition Factor ◽  
Growth Exponent ◽  
Allometric Growth ◽  
Exponential Equation ◽  
Weight Relationship ◽  
The Mean ◽  
Sarotherodon Galilaeus ◽  
Weight Data

The length-weight relationship and condition factor of Sarotherodon galilaeus and Oreochromis niloticus were observed in Strabag Lake. A total number of 365 individuals of the fish species were caught during the period of study with Sarotherodon galilaeus constituting 65.21% of the total catch while Oreochromis niloticus made up 34.79% of the catch. The mean weight (W) and mean total length (TL) were 56.04 ± 1.019 g and14.64 ± 0.103 cm respectively for S. galilaeus;62.86 ± 2.184 g and15.84 ± 0.171 cm respectively for O. niloticus. The values of constants a and b (growth exponent) were determined from the length and weight data which transformed into the linear equation of log W = log a + b log L. These parameters were then fitted to the exponential equation, W = [aL]b. The respective exponential equation for the length-weight relationship was W = 0.068[L]2.5 for S. galilaeus and W = 0.034[L]2.7 for O. niloticus which shows that both species exhibited negative allometric growth (b < 3.0). The correlation coefficient (r) and condition factor (K) recorded were 0.944 and 6.70 respectively for S. galilaeus and 0.911 and 3.49 respectively for O. niloticus specimens. The species showed negative allometric growth and were thriving well in the environment.

scholarly journals Length–Weight, Length–Length Relationships and Condition Factor of Chondrostoma regium (Heckel, 1843) and Barbus lacerta, Heckel, 1843 From Karasu River (East Anatolia, Turkey)

2018 ◽  
Vol 6 (6) ◽  
pp. 729 ◽  
Author(s):  
Osman Serdar ◽  
Ebru İfakat Özcan
Keyword(s):  
Fish Species ◽  
Condition Factor ◽  
B Values ◽  
Total Length ◽  
Relative Condition Factor ◽  
First Time ◽  
East Anatolia

Length–weight, length–length relationships and condition factors were estimated for two fish species (Chondrostoma regium, Barbus lacerta) caught between October 2014 and September 2015 in the 14 distinct locations of Karasu River, East Anatolia, Turkey. Minimum and maximum total length and weight were observed at 7.5 to 31.0 cm and from 5.7 to 280 g for C. regium, 7.0 to 24.0 cm and from 4.0-211 g for B. lacerta. The b values determined as 2.77 for Chondrostoma regium; 3.10 for Barbus lacerta. The types of growth were found negative allometric for C. regium and isometric growth for B. lacerta. The length-length relations between total, fork, and standard lengths for the two fish species were highly significant. The relative condition factor values were found to 1.102±0.013 for C. regium; 1.176±0.019 for B. lacerta. This study submits for the first time LWR, LLR and condition factor of two species in the Karasu River.

scholarly journals Length-weight relationships and condition factor of Hyperopisus bebe (Lacepede, 1803) (Actinopterygii: Osteoglossiformes) in River Galma, Zaria, Kaduna State, Nigeria

2017 ◽  
Vol 4 (8) ◽  
pp. 301-305
Author(s):  
Matouke M. Moise
Keyword(s):  
Water Quality ◽  
Water Body ◽  
Growth Pattern ◽  
Condition Factor ◽  
Allometric Growth ◽  
Male And Female ◽  
B Values ◽  
The Poor ◽  
Poor Water Quality ◽  
The Mean

The investigation of length-weight relationship and condition factor are very relevant indices to ascertain the health of fish in the water body. Length-weigh relationship and condition factor of Hyperopisus bebe (Lacepede, 1803) (Actinopterygii: Osteoglossiformes: Mormyridae) in River Galma, Zaria, Kaduna State, Nigeria, were assessed. The mean length and mean weigh in male and female were 26.703 cm +/- 0.51 cm and 25.32 cm +/- 0.898 cm; 158.2 g +/- 10.1 g and 95.91 g +/- 9.26 g, respectively. The exponent or growth pattern 'b' values for male and female were 2.009 and 2.176. The condition factor for male and female were 0.59 and 0.83, respectively. The negative allometric growth pattern and poor condition factor might be due to the poor water quality in the fish ecosystem and should be regarded with concern.

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 Size Frequency Distribution, Length-length and Weight-length Relationships and Condition Factor of Eight Fish Species of Nkam River, Coastal Cameroon

2020 ◽  
pp. 1-12
Author(s):  
Claudine Tekounegning Tiogué ◽  
Evrard Kouopestchop Medjo ◽  
Franklin David Ndilock Makongo
Keyword(s):  
Frequency Distribution ◽  
Fish Species ◽  
Condition Factor ◽  
Coastal Region ◽  
Small Fish ◽  
Size Frequency Distribution ◽  
Size Frequency ◽  
Length Relationship ◽  
Growth Performances ◽  
Sarotherodon Galilaeus

Aims: To assess the aquaculture potential of endogenous species in their habitat for domestication and preservation. Study Design: Growth performances of fish caught was analyzed by family, species, sex and month. Place and Duration: This study was conducted from April 12 to June 28, 2016 at CREVS (Cameroon Reptiles and Ecosystems Valorization Society) located in the District of Yabassi, Department of Nkam, Coastal Region of Cameroon. Methodology: A total of 160 fishes were collected by quantitative sampling for 3 months in the Nkam River. Results: It appears that two families of fish were recorded: the Cyprinidae (Labeo sanagaensis) and the Cichlidae (Tilapia cameronensis, Sarotherodon galilaeus sanagaensis, Sarotherodon nigripinnis dolloi, Tylochromis sudanensis, Hemichromis elongatus, Tylochromis trewavasae and Chromidotilapia gutheri gutheri). L. sanagaensis recorded the highest relative abundance (30%) against 3.13% (C. gutheri gutheri). Large fish were recorded in the majority of species in males, except in T. trewavasae and H. elongatus. The average total length was 23.71 ± 8.31 cm and the average total weight was 266.11 ± 200.96 g. Size frequency distribution of fish was bimodal with a large mode at size 20 cm and a small at size 36 cm. Small fish were abundant in catches especially in S. nigripinnis dolloi and C. gutheri gutheri. The allometric coefficient b of the weight-length relationship averaged 3.01 ± 0.87. The fish presented three types of growth: isometric, positive and negative allometric, and the condition factor K was greater than 1. Conclusion: It was concluded that these fish species could in general be potential candidates for domestication.

scholarly journals Helminth Parasites in the Gastrointestinal Tract of Oreochromis niloticus (Nile Tilapia) in Dadin Kowa Dam, Yamaltu Deba Local Government Area, Gombe State, Nigeria

2021 ◽  
pp. 1-6
Author(s):  
A. Jemimah ◽  
Y. M. Yahaya ◽  
T. Murna ◽  
A. Rejoice ◽  
A. Bara’atu
Keyword(s):  
Gastrointestinal Tract ◽  
Local Government ◽  
Fish Species ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Parasitic Infection ◽  
Local Government Area ◽  
Helminth Parasites ◽  
Total Length ◽  
Significant Difference

Aim: The aim of the study is to identify helminth parasites in the gastrointestinal tract of Oreochromis niloticus in Dadin Kowa Dam, Yamaltu Deba Local Government Area, Gombe State. Study design:  Oreochromis niloticus fish species were randomly obtained from the local fishermen in the landing sites; between 7:00am-10:00am weekly. Place and duration of study: The study was carried out at Dadin Kowa Dam in Yamaltu Deba Local Government Area of Gombe State between the months of March to June, 2019. Methodology: 60 Oreochromis niloticus (Nile Tilapia) were obtained and examined for gastro intestinal parasites. Sex of the fish was determined by the presence and absent of an intromittent organ. The total length, standard length and body weight was measured using standard method. Dissection was done using standard procedure and the Parasites recovered were identified using the helminth parasites of fish identification guide. Results: Out of the 60 fish species examined. (23 female and 37 males), 21 (35.00%) were infected and were observed to habour six (6) endoparasites; viz nematodes, Cestodes and trematodes. The results show that there was a significant difference between infection rate, total length and weight of fish with female species having relatively higher percentage prevalence 11(43.50%) than the males 10 (29.70%). It was observed that the prevalence of parasitic infection increase with length and weight of the fish. Conclusion: Presence of these fish helminth parasites may lead to devaluation in protein constant in the body of the fish. The work therefore recommends water quality assessment of Dams as it is one of the factors that bring about the increase in parasitic infection.

scholarly journals Length-weight relationship and condition factor of Sphyraena afra from the coastal waters of Lagos State

2019 ◽  
Vol 27 (1) ◽  
pp. 27-31
Author(s):  
Caroline Ireti Ayo-Olalusi ◽  
Adedolapo Abeke Ayoade
Keyword(s):  
Correlation Coefficient ◽  
Body Length ◽  
Fish Species ◽  
Coastal Waters ◽  
Condition Factor ◽  
Allometric Growth ◽  
Weight Relationship ◽  
Lagos State ◽  
Lagos Lagoon ◽  
The Mean

Abstract The length-weight relationship and condition factor of Sphyraena afra from the Lagos coast (LC) and the Lagos lagoon complex (LLC) in the coastal waters of Lagos State were studied for a period of two years. Parameters a and b of the length-weight relationship were estimated using the equation W = a x TLb, while the condition factor was calculated with the equation K = 100 x BW x TL-3. The relationships of fish condition factor and body length, sex, and seasons in Lagos coastal waters were determined. The species exhibited negative allometric growth (b < 3, P < 0.05) for males, females, and combined sexes with the length exponent (b) ranging from 2.72 to 2.85. Correlation coefficient r ranged from 0.89 to 0.98. The allometric growth values obtained in LC and LLC from the length-weight relationship indicated that the fish species exhibited increases in length rather than in weight. The overall mean condition factors (K) for S. afra from the LC and the LLC were 0.97 ± 0.11 and 1.17 ± 0.12, respectively. The mean condition factors of females were higher than those for males at most of the sampling stations, and S. afra was observed to be in better condition during the dry season.

scholarly journals EFECTO DE LOS ARTES DE PESCA SOBRE EL TAMAÑO DE LOS PECES EN UNA PESQUERÍA ARTESANAL DEL CARIBE COLOMBIANO

2016 ◽  
Vol 37 (2) ◽  
Author(s):  
Juan Carlos Narváez Barandica ◽  
Fabio Andrés Herrera Pertuz ◽  
Jacobo Blanco Racedo
Keyword(s):  
Fish Species ◽  
Oreochromis Niloticus ◽  
New Granada ◽  
Management Measures ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Landing Sites ◽  
The Mean ◽  
Individual Size ◽  
Mugil Incilis ◽  
Length Frequency Data

As fundamental support for designing a management system for the fishery in the Ciénaga Grande de Santa Marta and Pajarales Complex (CGSM-PC), the effect of the most used fishing gears on the main five fish species was addressed. The fishes studied were: mapalé sea catfish (Cathorops mapale), striped mojarra (Eugerres plumieri), New Granada sea catfish (Ariopsis sp.), parassi mullet (Mugil incilis), and Nile tilapia (Oreochromis niloticus). Length frequency data for each species were available during 1994-1996 and 2000-2004 to the following gears: cast-nets, encircling gillnets, beach seines, longlines, and gill nets. In order to evaluate the gears’ effect, the mean fish size (MCS) was compared to the size at maturity (MMS) of each species, considered here as limit reference point (LRP). The MCS for each species changed through the years, between landing sites and gears. The five fish species showed an individual size reduction trend. The results indicate that M. incilis, C. mapale, and Ariopsis sp. are at high risk of overfishing, since in all cases their MCS surpass their MMS. Concerning E. plumieri, although its MCS slightly exceeded the MMS, it is not exempted of the jeopardy of overexploitation. Oreochromis niloticus was the only one species without any overfishing hazard. How technological changes affect fish resources is discussed, whereas some management measures for this fishery are proposed.

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 Population Aspects of Fishes in Geba and Sor Rivers, White Nile System in Ethiopia, East Africa

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Simagegnew Melaku ◽  
Abebe Getahun ◽  
Mulugeta Wakjira
Keyword(s):  
Sex Ratio ◽  
Fish Species ◽  
Condition Factor ◽  
Diversity Index ◽  
Abundant Species ◽  
Fish Diversity ◽  
Reproductive Behaviors ◽  
Fish Samples ◽  
The Mean ◽  
White Nile

This study was carried out to assess the diversity, condition factor, length-weight relationship, and sex ratio of fishes in Geba and Sor Rivers located in Baro-Akobo Basin, White Nile system within Ethiopia. Fish samples were collected in one wet and one dry season. The length-weight relationships were fitted using power equation for the most abundant species. A total of 348 fish specimens were collected using gillnets and hooks. These were identified into eight species and one Garra sp. representing seven genera and four families. Family Cyprinidae was the most dominant with six species (66.7%). Labeobarbus intermedius, Labeobarbus nedgia, and Labeo cylindricus were the most abundant fish species, respectively, with 60.72%, 16.83%, and 14.66% index of relative importance (IRI). The diversity index was higher for Geba River (H′ = 1.50) than for Sor River (H′ = 1.10). All the three most abundant species had negative allometric growth. Seasonal variations in the mean Fulton condition factor (FCF) were statistically significant for L. cylindricus (p<0.05). There was variation in the sex ratio with the females dominating in all the three most abundant species. Further investigation into the fish diversity, food, feeding, and reproductive behaviors of fish species especially in the tributaries of these rivers and their socioeconomic aspects is recommended.

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