scholarly journals Growth Pattern and Length-Weight Relationship in Poecilia Reticulata (Peters) (Poeciliidae) Inhabiting the Drainage Canal System of Lagos Metropolis (Nigeria)

2020 ◽  
Vol 22 (2) ◽  
pp. 73-86
Author(s):  
Muyideen Owonire Lawal
Keyword(s):  
Growth Pattern ◽  
Poecilia Reticulata ◽  
Allometric Growth ◽  
Length Frequency ◽  
Canal System ◽  
K Value ◽  
Drainage Canal ◽  
Weight Relationship ◽  
Total Length ◽  
The Mean

Abstract This study investigated the growth pattern and length-weight relationship in Poecilia reticulata from the canal ecosystem of Lagos, Nigeria. A total of 2,400 fish specimens were caught, with total length ranging from 1.50 to 5.40 (3.30 ± 0.20) cm and weight ranged between 0.10 and 1.50 (0.63 ± 0.03) g. The length-frequency polygon showed four class intervals: 1.50-2.40 cm (51.29%); 2.50-3.40 cm (45.29%); 3.50-4.40 cm (3.25%); and 4.50-5.40 cm (0.17%). The value of “b” ranged from 1.3428-1.9863 which showed negative allometric growth, while the value of “r” ranged from 0.5 to 0.8. The mean K value was 1.05 ± 0.09 ‒ 1.62 ± 0.15.

scholarly journals Length-weight Relationship, Condition Factor and Feeding Habits of Synodontis clarias (Linnaeus, 1758) in the Lower River Benue at Makurdi, Nigeria

2015 ◽  
Vol 6 ◽  
pp. 59-67
Author(s):  
P M Akombo ◽  
E T Akange ◽  
B O Amali ◽  
J N Shima
Keyword(s):  
Growth Pattern ◽  
Condition Factor ◽  
Size Range ◽  
Regression Coefficient ◽  
Feeding Habits ◽  
Allometric Growth ◽  
Food Items ◽  
Weight Relationship ◽  
Wide Range ◽  
The Mean

The Length-Weight Relationship (LWR), Condition factor (K) and feeding habits of Synodontis clarias (Linnaeus, 1758) were investigated over a 24 month period from January, 2009 - December, 2010. A total number of 163 specimens comprising of 74 females and 89 males with the size range of 7.60 – 20.00cm and the mean of 12.72± 0.258cm were investigated. The weight ranged from 13.12 – 607.30g with the mean of 65.83± 0.897g. The LWRs for the females, males and combined sexes had the r values of 0. 8415, 0.9463 and 0.8703 respectively. The mean condition factor K was 3.3667, 2.6868 and 2.9954 for the females, males and combined sexes respectively. The regression coefficient b was 1.9408, 1.8799 and 2.1359 for the females, males and combined sexes respectively indicating negative allometric growth pattern for the species. Out of the 163 stomachs examined for food items, 88 (53.99%) were empty while 75 (46.01%) contained a wide range and varying quantities of food items indicating that S.clarias in River Benue is omnivorous.

Length-weight Relationships and Condition Factor of Parachanna Obscura Gunther 1861 in Epe Lagoon, Lagos, Nigeria

2021 ◽  
Vol 5 (2) ◽  
Author(s):  
Omonike C. Bakare
Keyword(s):  
Growth Pattern ◽  
Standard Length ◽  
Condition Factor ◽  
Good Health ◽  
Descriptive Statistics ◽  
State Of Health ◽  
Allometric Growth ◽  
K Value ◽  
The Mean ◽  
Precision Balance

Background: The study of the length-weight relationship (LWR) and condition factor (K) are critical in fisheries research and management. However, there is currently a dearth of information on the growth pattern and state of health of Parachanna obscura in Epe lagoon Methods: A total of 252 species of P. obscura ranging from 19.50 to 36.70 cm (standard length = 28.22 ± 4.95 cm) and 58.80 to 331.00 g (total weight = 267.69 ± 72.16 g) were obtained from the catches of local fishermen at the chief market fish landing station monthly for six months (January – June, 2018) at Epe lagoon, Lagos, Nigeria. Standard Length (SL) and Body Weight (BW) were measured to the nearest 0.1 cm and 0.01 g using digital Vernier calliper and electronic precision balance, respectively. Length-Weight Relationships and condition factor (K) were calculated using standard formula. Data were analysed using descriptive statistics and ANOVA at α 0.05. Results: The LWRs for males, females and combined sexes were 2.60, 2.70, and 2.65, respectively, indicating a negative allometric growth pattern. The mean K value in females (1.36±0.70) was higher than in males (1.18±0.48). Conclusion: The findings indicated that Parachanna obscura in Epe lagoon, Nigeria were heavy and in good health within the study period

scholarly journals Study of some biological aspects of the Nile Carp, Labeo niloticus (Pisces, Cyprinidae) from Khashm El-Girba Reservoir and Atbara River; Eastern Sudan: II, length-weight relationship, condition factor and age structure

2021 ◽  
Vol 3 (2) ◽  
pp. 7-14
Author(s):  
Mutasim Yousif Mohamed Abdalla ◽  
◽  
Abuelgasim Ibrahim Abdelhalim ◽  
Ahmed El Bedawi Adam ◽  
◽  
...  
Keyword(s):  
Age Structure ◽  
Growth Pattern ◽  
Condition Factor ◽  
Allometric Growth ◽  
Beach Seine ◽  
Weight Relationship ◽  
Biological Aspects ◽  
The Mean ◽  
The Relationship ◽  
Eastern Sudan

This study was undertaken to assess the length-weight relationship, condition factor and age structure, of the Nile carp, Labeo niloticus, in Khashm El-Girba reservoir and Atbara River, Sudan, from December 2015 to November 2016. Samples of fish were collected bi-monthly from three locations, namely; Um Aswad (Atbara River), El-Remila and El-Monaba (Khashm El-Girba reservoir), using beach seine nets of 1.2, 4.0 and 7.0 cm stretched mesh. Out of a total number of 1,190 specimens of L. niloticus collected from the three sampling sites, 189 specimens were randomly selected to determine age. The relationship between length and weight indicated negative allometric growth pattern in all three locations, where the slope (b) of the (LWR) was highly significant (p<0.001) and ranged from 2.178 to 2.885. The mean condition factor (K) varied monthly in the three locations with values ranging from 1.671 in Um Aswad (Atbara River) to 2.548 in El-Monaba (reservoir). Although the age of L. niloticus ranged from 0+ and 3+ years, yet, most of the studied fish are between age 0 + and 1+.

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 Early development and allometric growth in Nannacara anomala Regan, 1905 (Perciformes: Cichlidae) under laboratory conditions

2014 ◽  
Vol 12 (3) ◽  
pp. 659-665 ◽  
Author(s):  
Krzysztof Kupren ◽  
Maja Prusińska ◽  
Daniel Żarski ◽  
Sławomir Krejszeff ◽  
Dariusz Kucharczyk
Keyword(s):  
Early Development ◽  
Morphological Development ◽  
Allometric Growth ◽  
Laboratory Conditions ◽  
Total Length ◽  
Larvae And Juveniles ◽  
The Mean ◽  
Accelerated Growth

Morphological development and allometric growth of laboratory reared Nannacara anomala were studied from hatching to the loss of larval characters and beginning of squamation (18 days post-hatching) at 26°C. The mean total length (TL) of larvae and juveniles increased from 3.74 mm at hatching to 9.60 mm at metamorphosis. Morphogenesis and differentiation were most intense during the first week of development. During this period (TL interval = 3.74 - 4.84 mm) there was an evident priority to enhance the feeding and swimming capabilities by promoting accelerated growth in the head and tail regions. Following this period, there was a major decrease in growth coefficients, indicating a change in growth priorities. Observations on the early development of Nannacara anomala confirmed the basic uniformity development of a substrate brooding cichlid.

scholarly journals Length-weight Relationship, Growth Pattern and Condition Factor of the Silver Catfish Chrysichthys nigrodigitatus (Lacepède, 1803) from Lower River Benue, Nigeria

2018 ◽  
pp. 1-8
Author(s):  
Edem, Edem Thomas ◽  
Ofunama, Preye ◽  
Eyo, Victor `Oscar
Keyword(s):  
Population Dynamics ◽  
Growth Pattern ◽  
Sustainable Management ◽  
Condition Factor ◽  
B Value ◽  
Health Condition ◽  
Artisanal Fisheries ◽  
Allometric Growth ◽  
Silver Catfish ◽  
Weight Relationship

This study was carried out to evaluate the length-weight relationship, growth pattern and condition factor of the Silver catfish Chrysichthys nigrodigitatus from the Lower River Benue Makurdi, Nigeria. A total of 200 freshly caught specimens of C. nigrodigitatus were collected between July 2013 and September 2013 from the catches of the artisanal fisheries at landing points in Wadata Market, Makurdi. Results obtained showed that the “b” value for the males was 1.6067 while that of the females was 1.6791 and combined sexes 1.7371, indicating a negative allometric growth for this species. Correlation coefficient (r) obtained for males (0.9651), 0.9517 (females) and 0.9329 (pooled sexes) showed a positive significant relationship between length and weight of C. nigrodigitatus. Monthly mean condition factor (K), indicate that C. nigrodigitatus were in good physiological health condition. In conclusion, the baseline data on the length-weight relationship, condition factor of C. nigrodigitatus from the lower River Benue provided in this study is crucial in the sustainable management of this species in the River. Also, these findings will be useful in evaluating the population dynamics, stock and the aquaculture potential of C. nigrodigitatus for future purpose.

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

scholarly journals Fecundity and gonadosomatic index of Glossogobius giuris (Hamilton, 1822) from the Payra River, Patuakhali, Bangladesh

2014 ◽  
Vol 2 (2) ◽  
pp. 141 ◽  
Author(s):  
Animesh Roy ◽  
Md. Shakhawate Hossain ◽  
Mohammad Lutfar Rahman ◽  
Mohammad Abdus Salam ◽  
Mir Mohammad Ali
Keyword(s):  
Body Weight ◽  
Gonadosomatic Index ◽  
Fish Population ◽  
Mean Value ◽  
Gonad Weight ◽  
Weight Relationship ◽  
Total Length ◽  
Breeding Technique ◽  
The Mean ◽  
Glossogobius Giuris

Glossogobius giuris were collected during March to September 2013 from the Payra river to estimate the length-weight relationship with relative condition factor (Kn), fecundity, gonadosomatic index (GSI) and relation between fecundity and other parameters. The length-weight relationship was found to be Log W= 2.667 Log TL – 1.805 in male and Log W = 2.931 Log TL – 2.040 in female. The mean Kn were found to be 1.02±0.155 for male and 0.97±0.276 for female which indicates satisfactory condition of the fish population. The mean relative fecundity was ranged from 88495 to 264104 with a mean value of 171581±17855, having a average total length of 21.21±0.44 cm, body weight 70.22±4.62 g and gonad weight 2.74±0.31 g. The relationships among the fecundity, the total length, body weight, gonad weight were found to be linear and positively correlated. The mean GSI value was 3.42±0.33 and the highest GSI value was recorded 9.34±0.71 in the month of September. This study will help to introduce this species in sustainable aquaculture through proper management and for the development of induced breeding technique.

scholarly journals Pola pertumbuhan dan faktor kondisi ikan lemeduk (Barbodes schwanenfeldii) di Sungai Belumai Deli Serdang Provinsi Sumatera Utara

2017 ◽  
Vol 4 (1) ◽  
pp. 8
Author(s):  
Siti Aisyah ◽  
Darma Bakti ◽  
Desrita Desrita
Keyword(s):  
Frequency Distribution ◽  
Growth Pattern ◽  
Condition Factor ◽  
Length Frequency Distribution ◽  
Length Frequency ◽  
Growth Coefficient ◽  
Weight Relationship

Penelitian ini dilakukan di Sungai Belumai Kabupaten Deli Serdang Provinsi Sumatera Utara pada Bulan Mei dan juni 2014 di empat lokasi yang berbeda dengan menggunakan metode sensus. Tujuan dari penelitian ini untuk mengetahui aspek pertumbuhan (sebaran frekuensi panjang, hubungan panjang bobot, faktor kondisi dan koefisien pertumbuhan). Jumlah ikan lemeduk yang tertangkap adalah 55 ekor. Hasil penelitian menggambarkan bahwa populasi ikan didominasi oleh sebaran ukuran kelas panjang 174-194 mm. Hasil hubungan panjang berat menunjukkan bahwa pola pertumbuhan ikan bersifat allometrik negatif (b=2,565) dimana pertambahan panjang lebih cepat dibandingkan pertambahan berat. Nilai faktor kondisi ikan lemeduk (Barbodes schwanenfeldii) berkisar 0,946-1,059.This research was done in Belumai River Deli Serdang District North Sumatera Province. This research was conducted in May until June 2014 in four different locations by using census method. The purpose of this research is to know the aspect of growt (length frequency distribution, length-weight relationship, condition factor and growth coefficient). The number of lemeduk fish which caught were 55 fish. Result shown that the population is dominate by length frequency distribution 174-194 mm. Result length-weight relationship shown that growth pattern was allometric negative (b=2,565) where the length is faster growth than the weight. The condition factor of lemeduk fish was around 0,946-1,059.

scholarly journals Morphometric analysis of freshwater crab, Potamon koolooense (Decapoda: Brachyura: Potamidae) from hillstream Khoh, Uttarakhand

2013 ◽  
Vol 14 (1&2) ◽  
pp. 55-59
Author(s):  
Shurveer Singh ◽  
Ashish K. Chowdhary ◽  
Anita Rawat Rana ◽  
S.N. Bahuguna
Keyword(s):  
Morphometric Analysis ◽  
Growth Pattern ◽  
Carapace Length ◽  
Regression Equations ◽  
Freshwater Crab ◽  
Allometric Growth ◽  
Monthly Basis ◽  
Anova Test ◽  
Weight Relationship ◽  
Males And Females

The present study was carried out on freshwater crab in hillstream Khoh of district Pauri Garhwal in Uttarakhand state. Samples of crab were collected from the population inhabits the hillstream Khoh on monthly basis during May 2011 to April 2012. The regression equations for the length-weight relationship in crabs were obtained as Y=2.045X+0.266 and Y=1.522X+0.392 for males and females respectively. The ANOVA test revealed significant differences in carapace length-weight relationship at p<0.05 for both the sexes. Allometric growth pattern was observed in the study for both sexes of P. koolooense. A weak relationship was observed between length and weight of the specimen.

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