Length-weight relationship and condition factor of Mochokidae Inase River, Niger Delta, Nigeria

2017 ◽  
Vol 31 (2A) ◽  
pp. 205
Author(s):  
J.A. Meye ◽  
P.E. Omoruwou
Keyword(s):  
Niger Delta ◽  
Condition Factor ◽  
Weight Relationship ◽  
River Niger

Comparative Morphometry of the Genus Thais from Nembe, Bakana and Calabar

2019 ◽  
pp. 1-14
Author(s):  
Precious Itolima ◽  
A. P. Ugbomeh ◽  
J. N. Onwuteaka
Keyword(s):  
Niger Delta ◽  
Condition Factor ◽  
The Body ◽  
Weight Class ◽  
Allometric Growth ◽  
Morphometric Traits ◽  
Cross Sectional ◽  
Weight Relationship ◽  
Aperture Width ◽  
Body Whorl

Aim: Morphometry of Thais spp found in the Niger Delta Mangrove vegetation of Bakana, Calabar and Nembe were examined and compared. Study Design: The study is a cross-sectional observational study Place and Duration of Study: The study ws carried out in Bakana, Calabar and Nembe during a period of six months(January to June, 2018). Methodology: A total of 600 specimens (100 specimens per month) were collected during a period of six months (January to June 2018) from the three sampling communities. Three different species were identified namely: Thais coronata, Thais haemastoma and Thais lacera. Shell dimensions were measured to the nearest millimeter using Vernier calipers and weighed, to get the morphometric Characteristics: Whorl Diameter (WD), Shell length (SL), Shell width (SW), Body whorl length (BWL), Aperture length (AL), Aperture Width (AW) Shell Breadth (SB), and Animal Weight (AW). Number of whorls, number of primary spiral cord on the body and number of ridges or teeth inside of outer tip of the aperture were counted. Results: The disparity between the morphometric traits across the different species identified were minimal as most of the species had similar values of morphometric traits. However, differences can be identified using their colour; thais coronata (dirty light grey), T haemastoma (light grey), and T lacera (plane grey). The Three (3) species had a modal length class of 3.5cm to 4.5cm. Thais coronata and Thais lacera had a modal weight class of 9-11grams while Thais haemastoma had a modal weight class of 6-7grams. It was observed with the aid of length/weight relationship that the found in all study. Conclusion: It was observed with the aid of length/weight relationship that the Thais specimen found in all study locations exhibited a very weak linear relationship with very low R2 values across locations. The exponent b of Thais coronata and Thais haemastoma and T. lacera across the three study locations indicate a negative allometric growth pattern. The Month of April for samples collected from Nembe had the highest condition factor for the three (3) species. T. coronata (4.4), T. lacera (6.38) and T haemastoma (5.5).

scholarly journals Length-weight Relationship and Condition Factor of Cichlids in Eniong and Lower Cross Rivers, Niger Delta, Nigeria

2021 ◽  
pp. 29-37
Author(s):  
P. Ugbomeh, Adaobi ◽  
J. Etuk, Victor ◽  
I. Ugbomeh, Leonard ◽  
C. Akani, Godfrey
Keyword(s):  
Oreochromis Niloticus ◽  
Niger Delta ◽  
Condition Factor ◽  
Good Condition ◽  
Well Being ◽  
Positive Allometry ◽  
Cross River ◽  
Weight Relationship ◽  
Sarotherodon Melanotheron

Length-weight relationship and condition factor are essential parameters used in determination of growth and well-being of fish. The length-weight relationship and condition factor of eight species of cichlids were examined from a total of 358 cichlids belonging to fourteen species and seven genera. Sampling was between January and June, 2020 in Eniong River and lower Cross River in the Niger Delta from three stations: station one in Eniong river, station two at the confluence of Eniong and lower Cross River, and station three at the lower Cross River. The length and weight of each fish was measured to the nearest millimeter and gram, respectively. The length-weight relationship (LWR) and condition factor (K) of the species Coptodon dageti, Coptodon guineensis, Coptodon zilli, Chromidotilapia guntheri, Hemichromis elongatus, Oreochromis niloticus, Pelmatolapia mariae and Sarotherodon melanotheron were determined using standard methods. Total length of fish ranged from 12.9 ± 5.01 in H. elongatus to 20.7 ± 3.37cm in C. zilli. Total weight ranged from 24.8 ± 13.80 in H. elongatus to 146.4 ± 68.0 g in C. zilli. The exponent b ranged from 1.54 for H. elongatus to 3.34 in Pelmatolapia mariae. The coefficients of determination (r2) varied between H. elongatus (0.74) and O. niloticus (0.96). Fulton’s condition factor (K) ranged from 1.2 6 ± 0.50 (H. elongatus) to 1.89 ± 0.43 (O. niloticus). Length-weight relationship revealed negative allometry for six species and positive allometry for two species (O. niloticus and P. mariae). Cichlids in this study were observed to be in good condition, as the K values were greater than one.

scholarly journals Seasonal Variation in Length-Weight Relationship and Condition Factor of Five Fish Species from Kolo Creek, Niger Delta

2016 ◽  
Vol 6 (11) ◽  
pp. 342-348
Author(s):  
Enetimi Idah Seiyaboh ◽  
◽  
Sylvester Chibueze Izah ◽  
Blessing Chidinma Okogbue ◽  
Keyword(s):  
Seasonal Variation ◽  
Fish Species ◽  
Niger Delta ◽  
Condition Factor ◽  
Weight Relationship
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