scholarly journals Length-Weight Relationship of Some Fish Species in a Tropical Rainforest River in South-East Nigeria

2015 ◽  
Vol 17 (2) ◽  
pp. 73-78
Author(s):  
Godwin Adaka ◽  
Eunice Ndukwe ◽  
Anthony Nlewadim
Keyword(s):  
Fish Species ◽  
Growth Pattern ◽  
Condition Factor ◽  
Good Condition ◽  
B Value ◽  
Positive Correlation ◽  
Weight Relationship ◽  
Tilapia Zillii ◽  
Relationship Of ◽  
High Degree

Abstract The Length-Weight relationship of some fish species from Oramiri-Ukwa River, was studied from January to December, 2014. The slope (b) values obtained in the nine species ranged from 1.830 to 5.670 with most of the fishes indicating a negative allometric growth pattern except for Papyrocranus afer, with b value of 3.04, thus showing a positive isometric growth pattern. The following fish species showed a high degree of positive correlation at (P > 0.05); Ctenopoma kingselyae, Alestes imberi, Channa obscura, Oreochromis niloticus, Tilapia mariae, Tilapia zillii, Synodontis omais, and Papyrocranus afer. Chrysichthys auratus did not show this positive correlation. The condition factor (K) of the fish species ranged from 0.99 to 4.54, indicating that most of the fish were in good condition except for Chrysichthys auratus with 0.99.

scholarly journals Length-Weight Relationship and Condition Factor of Fish Species Caught by Cast Net in New Calabar River, Nigeria

2019 ◽  
pp. 1-13
Author(s):  
Henry Eyina Dienye ◽  
Olaniyi Alaba Olopade
Keyword(s):  
Fish Species ◽  
Condition Factor ◽  
Stock Assessment ◽  
B Value ◽  
High Positive Correlation ◽  
Positive Correlation ◽  
Weight Relationship ◽  
Sphyraena Barracuda ◽  
Rivers State ◽  
Caranx Hippos

The length -weight relationship and condition factor (K) of fish species caught by cast net were studied from three stations in the New Calabar River, Rivers State, Nigeria. A total of 1541 specimens of 26 fish species and representing 11 families were randomly collected using cast net with mesh sizes of 1.5 and 2.5 cm. Sample sizes of the different fish species examined in this study ranged from 8.79±0.25 cm (Caranx hippos specie) to 31.48±4.93 cm (Sphyraena barracuda specie) in total length and 15.45±0.40 g (Elops lacerta) to 156.00±39.30 g (Pelmatolapia mariae) in weight. The entire length-weight data in all the three stations were pooled together and the calculated correlation coefficient showed a high positive correlation (1.00) between length and weight of all the fish species except in Caranx hippos (0.18) with low positive correlation. The b value obtained ranged from 2.13 for Ethmalosa fimbriata with negative allomerty to 3.53 for Pelmatolapia mariae with positive allometry. By negative allometry (b < 3), the fish is said to be lighter for its length as it grows and (b>3), the fish gains weight as it grows. The mean condition factor ranged from 0.36 ± 0.03 recorded for Sphyraena barracuda to 2.20 ± 0.02 for Coptodon guineensis and Coptodon zillii. Apart from Sphyraena barracuda general wellbeing of all the fish species were found to be good, as indicated by the values of condition factor, which were nearer to or greater than 1. The results of the present study will provide an effective tool for further studies of population dynamics and stock assessment studies in the study area.

scholarly journals Length-Weight Relationship and Sex Ratio of Amblypharyngodon Mola in Dekar Haor of Sunamganj, Bangladesh

2018 ◽  
Vol 44 (2) ◽  
pp. 185-193
Author(s):  
PR Das ◽  
MS Uddin ◽  
MS Islam ◽  
M Biswas ◽  
MR Mia
Keyword(s):  
Sex Ratio ◽  
Freshwater Fish ◽  
Condition Factor ◽  
Correlation Coefficients ◽  
Male And Female ◽  
Positive Correlation ◽  
Average Ratio ◽  
Weight Relationship ◽  
R Value ◽  
Relationship Of

The study was carried out to determine length-weight relationship and sex ratio of a freshwater fish Amblypharyngodon mola (Hamilton 1822) collected from Dekar haor of Sunamganj district during the period of January to August 2017. A total of 2000 fishes were collected for the study and categorized these fishes into three groups namely males, females and combined sexes. Among 2000 mola 777 were male and 1223 were female. Length-weight equations and the correlation coefficients obtained for males, females and combined ones were: males Y = –1.97 + 3.00X, r = 0.883; females Y = –2.30 + 3.41X, r = 0.914 and combined Y = –2.11 + 3.16X, r = 0.904. Female’s A. mola attained more weight with the increases in length. Value of correlation coefficient ‘r’ was 0.883 for male and exhibited highly positive correlation between length and weight. On the contrary, ‘r’ value for female was 0.914 and it had also strongly positive correlation between length and weight relationships. Length-weight relationship of A. mola for male, female and combined sexes showed allometric pattern of growth. Condition factor ‘K’ for male, female and combined sexes was 1.09, 1.05 and 1.06, respectively and indicated better condition of fishes. The highest sex ratio (1 : 2.05) was found in May and the lowest (1 : 1.33) was in February. Dominance of females over males throughout the year was observed with an average ratio of male and female 1 : 1.57. Therefore, results of the study indicate that the existing hydrobiological conditions of the haor are conducive for food availability, free movement, feeding and better growth of the fish. Asiat. Soc. Bangladesh, Sci. 44(2): 185-193, December 2018

scholarly journals Length-Weight Relationships and Condition Factors of the Naleh Fish, Barbonymus gonionotus (Pisces, Cyprinidae) Harvested from Nagan Raya Waters, Indonesia

2019 ◽  
Vol 53 (1) ◽  
pp. 75-82 ◽  
Author(s):  
A. S. Batubara ◽  
Z. A. Muchlisin ◽  
D. Efizon ◽  
R. Elvyra ◽  
M. Irham
Keyword(s):  
Growth Pattern ◽  
Condition Factor ◽  
Growth Parameters ◽  
Good Condition ◽  
Relative Weight ◽  
Stable Condition ◽  
B Value ◽  
Food Sources ◽  
Survey Method ◽  
Fish Samples

Abstract The objective of the present study was to examine the growth pattern and condition factors of the naleh fish, Barbonymus gonionotus Bleeker, 1849 in Nagan River, Nagan Raya District, Aceh Province, Indonesia. The sampling was conducted for 12 months from January 2016 to December 2016 using the explorative survey method. The sampling locations were determined based on the information given by local fishermen. A total of 761 fish samples were collected during the study. The Linear Allometric Model (LAM), Fulton’s and Relative Weight conditions factors were utilized to analyze the length-weight relationship and condition factor of the fish using growth parameters. The results showed that the highest coefficient of b was recorded in December, where the b value of males were 3.82 and 4.23 for the females with the average b value of males and females were 2.92 indicating an isometric growth pattern. The average Fulton’s condition factor (K) was 2.28 and the average Relative weight (Wr) condition factor was 100.59. It is concluded that fish had the isometric growth pattern and based on K and Wr value, the result implies that the waters are still in a good condition. Furthermore, the availability of food sources, low competitors, and low predators indicate that the aquatic environment is in a stable condition.

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 Hubungan panjang-berat dan faktor kondisi julung-julung (Hemirhamphodon pogonognathus) di Aek Mailil Kabupaten Labuhanbatu Sumatera Utara Indonesia

2021 ◽  
Vol 10 (2) ◽  
pp. 171-180
Author(s):  
Sinta Nuria Munthe ◽  
Rusdi Machrizal
Keyword(s):  
Growth Pattern ◽  
Local Community ◽  
Condition Factor ◽  
Relative Weight ◽  
Weight Coefficient ◽  
B Value ◽  
Native Fish ◽  
Allometric Model ◽  
Relationship Of ◽  
The Relationship

Julung-julung (Hemirhamphodon pogonognathus) merupakan salah satu spesies ikan asli Indonesia. Aek Mailil merupakan salah satu habitat ikan julung-julug (H. pogonognathus) yang berada di Kabupaten Labuhanbatu. Penelitian bertujuan untuk mendapatkan hubungan panjang-berat dan faktor kondisi ikan julung-julung (H. pogonognathus) yang hidup di Aek Mailil. Pengambilan data dilakukan mulai November 2020 hingga Januari 2021 dengan alat tangkap durung. Titik sampling ditetapkan atas informasi dari masyarakat Desa Bandar Kumbul. Hubungan panjang-berat dihitung dengan Linear Allometrik Model (LAM), sedangkan faktor kondisi dihitung dengan rumus Fulton (K) dan berat relatif (Wr). Pola pertumbuhan ikan julung-julung (H. pogonognathus) mendapatkan hasil alometrik negatif dengan nilai b 2,9371 (b<3). Nilai koefisien Fulton (K) 2,57 dan koefisien berat relatif (Wr) 103,07. Hal ini menunjukkan bahwa pola pertumbuhan ikan julung-julung (H. pogonognathus) allometrik negatif dengan panjang tubuh lebih cepat dibandingkan berat tumbuh. Nilai (K) menunjukkan bahwa Aek Mailil masih dalam keadaan seimbang dan baik untuk mendukung kehidupan ikan julung-julung (H. pogonognathus). Kata kunci: faktor kondisi; Hemirhamphodon pogonognathus; pola pertumbuhan ABSTRACTLong-Weight relationship and condition factors of Julung-Julung (Hemirhamphodon pogonognathus) in Aek Mailil, Labuhanbatu Regency, North Sumatera, Indonesia. Hemirhamphodon pogonognathus is one of Indonesia's native fish species. Aek Mailil is one of the habitats for julung-julung (H. pogonognathus) in Labuhanbatu Regency. This study aimed to determine the relationship between length-weight and condition factors of julung-julung (H. pogonognathus) living in Aek Mailil. Sampling was carried out from November 2020 to January 2021 using durung fishing gear. The sampling points were determined based on information from the local community of Bandar Kumbul Village. The relationship of length-weight is calculated using the Linear Allometric Model (LAM), while the condition factor is calculated using the Fulton formula (K) and relative weight (Wr). The growth pattern of julung-julung (H. pogonognathus) got a negative allometric result with a b value of 2.9371 (b <3). The value of the Fulton coefficient (K) 2.57 and the relative weight coefficient (Wr) 103.07. This means that Aek Mailil's waters are in a balanced state and can support the (H. pogonognathus) live.Keywords: condition factor; Hemirhamphodon pogonognathus; growth pattern

scholarly journals Hubungan panjang bobot dan faktor kondisi ikan petek, Leiognathus equulus (Forsskål, 1775) di Teluk Pabean, Jawa Barat

2018 ◽  
Vol 17 (3) ◽  
pp. 311
Author(s):  
Reiza Maulana Aditriawan ◽  
Nico Runtuboy
Keyword(s):  
Growth Pattern ◽  
Condition Factor ◽  
Weight Relationship ◽  
Relative Condition Factor ◽  
Fish Samples ◽  
Fish Collection ◽  
One Year ◽  
Relationship Of

This study is aimed to determine length-weight relationship and condition factor of common ponyfish in Pabean Bay, Indramayu. The study was carried out for one year, from April 2016 to March 2017. Fish collection were caught using gillnet and set net. total of 154 individual fishes were caught, the fish samples ranged from 18 - 141 mm in length and 0.05 – 41.35 g in weight. The length-weight relationship of ponyfish throughout a year was W = 7x10-06 L3,1983. The result indicated that the growth pattern of fish was positive allometric. The relative condition factor of ponyfish was varied from 0,67 – 1,42 AbstrakPenelitian ini bertujuan untuk menentukan hubungan panjang bobot dan faktor kondisi ikan petek yang ada di Teluk Pabean, Indramayu. Penelitian dilaksanakan selama satu tahun dari bulan April 2016 hingga bulan Maret 2017. Ikan contoh ditangkap dengan menggunakan alat tangkap yaitu jaring insang dan sero. Jumlah ikan yang tertangkap seba-nyak 154 ekor dengan kisaran panjang total 18 - 141 mm dan bobot 0,05 – 41,35 g. Hubungan panjang-bobot ikan petek sepanjang tahun 2016 adalah W = 7x10-06 L3,1983. Hasil ini menunjukkan bahwa pola pertumbuhan ikan bersifat alome-trik positif. Faktor kondisi ikan petek berfluktuasi berkisar antara 0,67 – 1,42.

Understanding selected growth aspects in Redbelly Tilapia, Coptodon zilli (Gervais) and Largemouth Bass, Micropterus salmoides (Lacepède) in Lake Naivasha, Kenya; Fisheries Management Perspective

2020 ◽  
Vol 01 (01) ◽  
pp. 72
Author(s):  
James Last Keyombe ◽  
◽  
Kevin Obiero ◽  
Edna Waithaka ◽  
Nicholas Outa ◽  
...  
Keyword(s):  
Sex Ratio ◽  
Fish Species ◽  
Condition Factor ◽  
Micropterus Salmoides ◽  
Good Condition ◽  
Lake Naivasha ◽  
Early Maturity ◽  
Weight Relationship ◽  
Fish Samples ◽  
First Maturity

Coptodon zilli and Micropterus salmoides were introduced into Lake Naivasha in 1929 and 1959 respectively. The reasons for the introduction were to boost the fisheries and for recreational fishing respectively. However, the numbers of the two fish species in the lake have been declining over the years. It is therefore necessary to assess various aspects of their growth such as length-weight relationship, condition factor, sex ratio and length at first maturity to inform management and policy making for enhanced recovery and establishment of their populations. Length-weight relationship, condition factor, sex ratio and length at first maturity of the fish were studied from October 2016 to November 2018. A total of 303 fish samples; 193 C. zilli and 110 M. salmoides were studied. Results showed that C. zilli and M. salmoides had an allometry coefficient value of 2.9 and 3.1 and condition factor (K) value of 1.77 and 1.39 respectively. The sex ratios (male: female) of C. zilli and M. salmoides were 1.1:1 and 1.3: 1 respectively. The shortest total length for mature C. zilli and M. salmoides recorded were 12 cm and 26.5 cm while 21.8 cm and 51 cm were for the longest respectively. The fish growth pattern therefore failed to obey the cube law of b=3 thus exhibiting allometric growth. The two fish species were found to be in good condition with K factor above 1. It can therefore be concluded that the fish are generally in a good condition though the early maturity especially for C. zilli could be a sign of pressure either from environmental factors or human induced. Domination of the species by males, although a common feature in African lakes, is a case for concern since it presents uncertainty on the future of the fisheries. Restocking of Lake Naivasha with the two fish species should be considered and proper fishing practices enforced

scholarly journals Catch And Length-Weight Relationship Of Freshwater Lobster, Cherax Quadricarinatus Von Martens, 1868 In Tondano Lake, Kakas District, Minahasa, North Sulawesi

2018 ◽  
Vol 6 (1) ◽  
pp. 85
Author(s):  
Yosef Gerard Jamlean ◽  
Nego E. Bataragoa ◽  
Jhon L. Tombokan
Keyword(s):  
Growth Pattern ◽  
Condition Factor ◽  
Natural Habitat ◽  
Economic Value ◽  
Clarias Gariepinus ◽  
Weight Relationship ◽  
North Sulawesi ◽  
Weight Growth ◽  
African Sharptooth Catfish ◽  
Relationship Of

C. quadricarinatus (red claw) has important economic value either for consumption or as ornamental crustacean, has been  cultivated, and introduced to many waterways outside its natural habitat. In Tondano lake, C. quadricarinatus has developed and become fishing target  using traps and spearguns.  The purpose of this survey is to describe the freshwater lobster catching using traps, and to know the length-weight relationships, growth pattern and condition factor. The study was expected to use as information on the presence of C. quadricarinatus Tondano Lake. Catches were red claw, C. quadricrinatus, marble sleeper Oxyeleotris marmorata, Mud gudgeon Ophieleotris aporos, Mozambique tilapia Oreochromis mossambicus and African sharptooth catfish Clarias Gariepinus. Length-weight relationship of C. quadricarinatus was W = -1.8005 + 4.2765 log L for males, W = -1.2978 + 3.6524 log L for females, respectively, and W = -1.5631 + 3.9848 log b for combined sexes. They had positive allometric (A +) growth. Condition factor ranged from 0.60-1.43 with an average of 1.071 ± 0.17 for males and 0.46-1.36 with an average of 1.027 ± 0.18 for females, 0.59-1.642 withan average of 1.22± 0.21.Keywords: fishing, length-weight, growth pattern, fishing gear, Kakas district, MinahasaAbstrakC. quadricarinatus (red claws) mempuyai nilai ekonomis penting baik komsumsi maupun sebagai krustasea hias dan  telah banyak di budidaya serta di introduksi ke banyak perairan  di luar habitat aslinya. Di Danau Tondano, C. quadricarinatus telah berkembang biak dan menjadi target penangkapan nelayan mengunakan alat tangkap bubu dan alat tangkap tura sejenis tombak sambil menyelam. Tujuan penelitinan ini ialah untuk mendeskripsikan penangkapan lobster air tawar C. quadricarinatus menggunakan alat tangkap bubu, hubungan panjang berat, pola pertumbuhan dan faktor kondisi. Hasil penilitian ini diharapkan dapat digunakan sebagai informasi keberadaan lobster air tawar C. quadricarinatus di Danau Tondano. Hasil tangkapan yang didapat adalah lobster air tawar, ikan Betutu, ikan Payangka, ika Mujair dan ikan Lele Dumbo. Hasil hubungan panjang berat lobster air tawar di dapat jantan : W=-1,8005+4,2765 log L, betina : W=-1,2978+3,6524 log L dan gabungan ( jantan & betina) : W=-1,5631+3,9848 log L. Pola pertumbuhan ketiganya ialah allometrik positif (A+) dan faktor kondisi jantan berkisar 0,60-1,43 dengan rata-rata1,071±0,17, betina berkisar 0,46-1,36 dengan rata-rata 1,027±0,18, dan gabungan (jantan dan betina) berkisar 0,59-1,642 dengan rata-rata1,22±0,21.Kata Kunci : Penangkapan, Hubungan panjang berat, Pola pertumbuhan, Kecamatan Kakas

scholarly journals Length-weight relationship of Penaeus indicus and Penaeus merguiensis in the Langsa mangrove area, Aceh Province

2021 ◽  
Vol 869 (1) ◽  
pp. 012065
Author(s):  
S Maulida ◽  
T H Iqbal ◽  
F Firmanhadi ◽  
F M Nur ◽  
N Fadli ◽  
...  
Keyword(s):  
Growth Pattern ◽  
Mangrove Forest ◽  
Relative Weight ◽  
B Value ◽  
Weight Relationship ◽  
Aceh Province ◽  
Penaeus Indicus ◽  
Penaeid Shrimps ◽  
Relationship Of ◽  
Penaeus Merguiensis

Abstract The two Penaeid shrimps Penaeus indicus and Penaeus merguiensis are the most common commercial species found in the Langsa mangrove forest. The growth pattern of these two Penaeid shrimps are strongly influenced by environmental factors such as temperature, pH, dissolved oxygen (DO), salinity, availability of food and predators, which ultimately determines the abundance and catch of commercial adult shrimps obtained. The present study aims to investigate the length-weight relationship of P. indicus and P. merguiensis in the Langsa mangrove forest, Aceh Province. The sampling was conducted in November 2018 with the stratified random sampling method. A total of 124 shrimps consisted of 92 samples P. indicus and 32 samples P. merguiensis. The results showed that growth pattern of two Penaeid shrimps was categorized as negative allometric. The highest b value is shown in P. merguiensis with b value of 2.87 while P. indicus 2.55. The value of the relative weight condition factor (Wr) of the two shrimps indicates a value of >100. It is concluded that the waters of the mangrove forest in Langsa City are still able to support the survival of P. indicus and P. merguiensis.

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