scholarly journals Relation longueur-poids et facteur de condition de sept espèces de poisson du réservoir de Samandeni avant son ouverture à la pêche (Burkina Faso).

2020 ◽  
Vol 151 ◽  
pp. 15559-15572
Author(s):  
Mahamoudou MINOUNGOU ◽  
, Raymond OUEDRAOGO ◽  
Nomwine DA ◽  
Adama OUEDA
Keyword(s):  
Burkina Faso ◽  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Dominant Species ◽  
Condition Factor ◽  
Mots Clés ◽  
Weight Relationship ◽  
Good Shape ◽  
Sarotherodon Galilaeus

Objectif : Fournir les premières données sur l’ichtyofaune du réservoir de Samandeni avant son ouverture à la pêche à travers l’étude de la relation longueur-poids et de facteur de condition de sept espèces dominantes dudit réservoir. Méthodologie et résultats : Les poissons ont été collectés entre avril 2018 et janvier 2019 à travers des pêches expérimentales aux filets épervier et maillant. Sept espèces dominantes du réservoir à savoir Sarotherodon galilaeus (Mango tilapia), Coptodon zillii (Redbelly tilapia), Oreochromis niloticus (Tilapia du Nil), Marcusenius senegalensis (Trunkfish), Synodontis schall (Wahrindi), Schilbe intermedius (African butter catfish) et Brycinus nurse (Nurse tetra) ont été soumises à l’étude de la relation longueur-poids (RLP) et de facteur de condition. Les régressions longueur-poids, appliquées ici, ont donné des coefficients d’allométrie situés entre 2,86 et 3,20 avec des coefficients de détermination qui varient de 0,7312 à 0,9443. Conclusion et application des résultats: Ces résultats qui sont d’une grande importance dans la modélisation de l’écosystème du réservoir de Samandeni, décrivent une croissance isométrique pour les sept espèces étudiées. En référence aux facteurs de condition, Sarotherodon galilaeus, Coptodon zillii, Oreochromis niloticus et Brycinus nurse présentent de bon état de forme. Mots clés : ichtyofaune, relation longueur-poids, facteur de condition, réservoir de Samandeni, Burkina Faso. Weight–length relationships and condition factor of seven species of fish from Samandeni reservoir before it was opened to fishing (Burkina Faso). ABSTRACT Objective: To provide the first data of the ichthyofauna of the Samandeni reservoir before it is opened to fishing through the study of the length-weight relationship and condition factor of seven dominant species of the said reservoir. Methodology and Results: The fish were collected between April 2018 and January 2019 through experimental fishing with hawk and gillnets. Seven dominant species of the reservoir, namely Sarotherodon Minoungou et al., J. Appl. Biosci. 2020 Relation longueur-poids et facteur de condition de sept espèces de poisson du réservoir de Samandeni avant son ouverture à la pêche (Burkina Faso). 15560 galilaeus (Mango tilapia), Coptodon zillii (Redbelly tilapia), Oreochromis niloticus (Nile Tilapia), Marcusenius senegalensis (Trunkfish), Synodontis schall (Wahrindi), Schilbe intermedius (African butter catfish) et Brycinus nurse (Nurse tetra) were subjected to the study of the length-weight relationship and condition factor. The length-weight regressions applied here gave allometric coefficients between 2.86 and 3.20 with coefficients of determination varying from 0.7312 to 0.9443. Conclusion and Application of results: These results, which are of great importance in the modelling of the ecosystem of the Samandeni reservoir, describe isometric growth for the seven species studied. With reference to the condition factors, Sarotherodon galilaeus, Coptodon zillii, Oreochromis niloticus and Brycinus nurse are in good shape. Keywords: ichtyofauna, weight–length relationships, condition factor, Samandeni reservoir, Burkina Faso.

scholarly journals ANALISIS HUBUNGAN PANJANG BOBOT DAN PENDUGAAN PARAMETER PERTUMBUHAN IKAN NILA (Oreochromis niloticus) DI WADUK IR. H. DJUANDA

2017 ◽  
Vol 3 (2) ◽  
pp. 85
Author(s):  
Masayu Rahmia Anwar RahmiaAnwar Putri ◽  
Didik WahjuHendro Tjahjo
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Condition Factor ◽  
Growth Parameters ◽  
Parameters Estimation ◽  
Fish Length ◽  
Weight Relationship ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Weight Data

Ikan nila (Oreochromis niloticus) merupakan salah satu ikan introduksi yang mulai mendominansi hasil tangkapan ikan di Waduk Ir. H. Djuanda. Penelitian ini bertujuan untuk mengetahui hubungan panjang bobot dan menduga parameter pertumbuhan dari ikan nila di Waduk Ir. H. Djuanda. Contoh ikan didapatkan selama bulan Pebruari sampai Nopember 2008. Data panjang dan bobot ikan dianalisis hubungan panjang bobotnya dan ditentukan parameter pertumbuhannya dengan menggunakan program FISAT II. Hasil penelitian menunjukan bahwa pertumbuhan ikan nila di Waduk Ir. H. Djuanda bersifat allometrik negatif dengan persamaan W=0,129L2,4608,yang menandakan pertambahan bobotnya tidak secepat pertambahan panjangnya (b<3) dengan faktor kondisi 1,15.Ukuran panjang ikan yang tertangkap berkisar antara 11-41 cm. Hasil pendugaan parameter pertumbuhan diperoleh L=44,10 cm, K=0,72 (per tahun), dengan Z=2,4, M=1,34, F=1,06, dan E=0,44. Nile tilapia (Oreochromis niloticus) is one of introduction fishes that begin to dominate yield of fish capture at Ir. H. Djuanda Reservoir. The aim of this research was to know the length weight relationship and growth parameters estimation of nile tilapia at Ir. H. Djuanda Reservoir. The samples were collected during February until November 2008. The length and weight data of nile tilapia were analyzed its length weight relationship and the growth parameters were evaluated by FISAT II. The research shows that the characteristic of nile tilapia growth’s at Ir. H. Djuanda Reservoir was allometric negative with similarity W=0.129L2.4608, that indicated the increasing of weight from this fish not fast as its length (b<3) with the condition factor of it was 1.15. The range measure of fish length that captured was 11-41 cm. The results from growth parameters estimation were L=44.10 cm, K=0.72 (per year), with Z=2.4, M=1.34, F=1.06, and E=0,44.

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 Etat des lieux de la faune ichtyologique des pêcheries de la Sirba et de Sidi-Kompenga, Est du Burkina Faso

2020 ◽  
Vol 16 (40) ◽  
Author(s):  
Sanogo Souleymane ◽  
Compaoré Inoussa ◽  
Ouattara Amidou ◽  
Sow Oumarou ◽  
Kabré Tinkoudgou André
Keyword(s):  
Burkina Faso ◽  
Oreochromis Niloticus ◽  
Sarotherodon Galilaeus

Cette étude a concerné les pêcheries des localité de Sidi-Kompenga et de Sirba situées à l’Est du Burkina Faso et a eu pour objectif de faire l’état des lieux de la faune ichtyologique. L’échantillonnage s’est déroulé durant les périodes de crue et d’étiage. Des pêches expérimentales combinant plusieurs engins de pêche ont été menées sur six stations. Quatre paramètres physico-chimiques ont été mesurés : la température, le pH, la conductivité et la transparence. La richesse taxinomique ainsi que les indices de diversité de Shannon, d’équitabilité de Pielou et de Simpson ont été déterminés. Les températures moyennes étaient comprises entre 27,8 et 31,2 °C et entre 28,6 et 30,9 °C respectivement au niveau de Sidi-Kompenga et de la Sirba. Quant aux pH moyens, ils étaient compris entre 7,3 et 8,3 et entre 7,04 et 8,24 respectivement au niveau de SidiKompenga et de la Sirba. Quant à la faune ichtyologique, on a dénombré 29 espèces regroupées en 22 genres et 11 familles au niveau de Sidi-kompenga et 28 espèces regroupées en 23 genres et 11 familes au niveau de Sirba. Les indices de Shannon H’, d’équitabilité de Pielou et de Simpson calculés ont été respectivement 2,67 ; 0,79 et 0,90 à Sidikompenga et 2,66 ; 0,80 et 0,91 à Sirba. Les familles des Alestidea et des Mormyridea ont été les plus diversifiées avec chacune 6 espèces dont Sarotherodon galilaeus, Oreochromis niloticus et Coptodon zillii ont été les 3 espèces les plus courantes dans les captures. Les résultats montrent que les deux pêcheries présentent une population piscicole diversité.

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.

Gyrodactylus malalai sp. nov. (Monogenea, Gyrodactylidae) from Nile tilapia, Oreochromis niloticus (L.) and Redbelly tilapia, Tilapia zillii (Gervais) (Teleostei, Cichlidae) in the Lake Turkana, Kenya

2012 ◽  
Vol 57 (2) ◽  
Author(s):  
Iva Přikrylová ◽  
Blažek Radim ◽  
Milan Gelnar
Keyword(s):  
Oreochromis Niloticus ◽  
Nile Tilapia ◽  
Sequence Data ◽  
Marginal Hook ◽  
Lake Turkana ◽  
African Countries ◽  
Tilapia Zillii ◽  
Nile Tilapia Oreochromis Niloticus ◽  
Sarotherodon Galilaeus ◽  
Partial 18S

AbstractGyrodactylus malalai sp. nov. is described from the fin surface of cichlid fishes Oreochromis niloticus (L.) and Tilapia zillii (Gervais) caught in Lake Turkana (Kenya). The new species morphologically resembles Gyrodactylus nyanzae Paperna, 1973, but can be readily distinguished by the shape of the marginal hook sickles and the size of its hamuli. The sequence data of rDNA spanning partial 18S, internal transcribe spacer 1 and 2 and the 5.8S gene is unique within GenBank. Genetically, as most similar Gyrodactylus ergensi Přikrylová, Matějusová, Musilová et Gelnar, 2009 was found (97.5%). Moreover, a specimen of G. cichlidarum from O. niloticus, and a specimen G. ergensi from Sarotherodon galilaeus (L.) were collected during sampling in Kenya. Likewise, additional sampling of O. niloticus from the Blue Nile in Sudan revealed the presence of the newly described species. These findings represent the first records of gyrodactylids in both African countries.

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