scholarly journals Length-Weight Relationship and Condition Factor of Four Commercial Fish Species of Oyan Lake, Nigeria

2018 ◽  
Vol 2 (4) ◽  
Author(s):  
Ayodele OP
Keyword(s):  
Fish Species ◽  
Condition Factor ◽  
Commercial Fish ◽  
Weight Relationship

scholarly journals Length-weight relationship and condition factor of eight fish species from the upper Araguari River, State of Amapá, Brazil

2019 ◽  
Vol 41 ◽  
pp. e46666 ◽  
Author(s):  
Luiza Prestes ◽  
Marcos Sidney Brito Oliveira ◽  
Marcos Tavares-Dias ◽  
Maria Gercilia Mota Soares ◽  
Fabiana Calacina Cunha
Keyword(s):  
Fish Species ◽  
Condition Factor ◽  
First Record ◽  
The State ◽  
Coefficient Of Determination ◽  
Weight Relationship ◽  
Estimated Parameters

The present study estimated parameters of the length-weight relationship (LWR) and allometric condition factor for eight fish species from the upper Araguari River, in the State of Amapá, Brazil. A total of 615 fish of eight species were analyzed: Acestrorhynchus falcatus, A. falcirostris, Ageneiosus inermis, Hemiodus unimaculatus, Hoplias aimara, Myloplus asterias, M. ternetzi and Tometes trilobatus. The allometric condition factor varied from 0.742 to 1.435. The coefficient of allometry ranged from 2.723 to 3.225. The coefficient of determination (R2) of the LWR ranged from 0.742 to 0.985. This is the first estimate of the length-weight relationship for fish from the Araguari River and the first record of these parameters for Myloplus ternetzi and Tometes trilobatus.

“Length weight relationship of four non commercial fish species from the Southwest coast of India”

2020 ◽  
Vol 36 (6) ◽  
pp. 858-859
Author(s):  
Swathy Kottappilly Surendran ◽  
Raffi Sirajudeen Mohammed ◽  
Sreenath Mohanan Thittayil ◽  
Athul Subhash
Keyword(s):  
Fish Species ◽  
Commercial Fish ◽  
Southwest Coast Of India ◽  
Southwest Coast ◽  
Weight Relationship ◽  
Relationship Of

scholarly journals Length-weight relationship and relative condition factor of five Labeo spp. from river Cauvery in India

2019 ◽  
Vol 66 (2) ◽  
Author(s):  
S. Sibina Mol ◽  
A.K. Jaiswar ◽  
P. Panikkar ◽  
B.K. Behera ◽  
H. Sanath Kumar ◽  
...  
Keyword(s):  
Fish Species ◽  
Large Scale ◽  
Condition Factor ◽  
Regression Coefficient ◽  
Maximum Length ◽  
Cauvery River ◽  
Peninsular India ◽  
Weight Relationship ◽  
Relative Condition Factor ◽  
First Time

Length-weight relationship (LWR) of five species of the genus Labeo (Family: Cyprinidae) namely L. rohita (Hamilton,1822), L. calbasu (Hamilton,1822), L. bata (Hamilton,1822), L. dyocheilus (McClelland, 1839) and L. porcellus (Heckel, 1844), based on 214 specimens collected from Cauvery River in Peninsular India, were established. Sampling was carried out from December 2017 to December 2018 at around three months interval. The value of regression coefficient (b) ranged from 2.6147 (L. bata) to 3.2855 (L. dyocheilus). A new maximum length of 41 cm for L. porcellus has been recorded. For L. porcellus, LWR is established for the first time while for other species (except L. rohita); it is estimated for the first time from a peninsular river in India. Relative condition factor estimated for the five fish species did not show large scale variation (1.001 to 1.019).

scholarly journals Length-weight relationship and condition factor for twelve fish species from the Igarapé Fortaleza basin, a small tributary of the Amazonas River estuary

2020 ◽  
Vol 50 (1) ◽  
pp. 8-11 ◽  
Author(s):  
Marcos Sidney Brito OLIVEIRA ◽  
Luís Maurício Abdon SILVA ◽  
Luiza PRESTES ◽  
Marcos TAVARES-DIAS
Keyword(s):  
Fish Species ◽  
Condition Factor ◽  
River Estuary ◽  
River System ◽  
First Record ◽  
The Body ◽  
Coefficient Of Determination ◽  
Weight Relationship ◽  
Weight Data ◽  
Small Tributary

ABSTRACT Length and weight data are useful in fisheries management and standard results of fish monitoring programs. Length-weight relationship (LWR) is used for estimating the weight corresponding to a given length, and the condition factor is used to compare the body condition, fatness or health of fish populations. This study aimed to estimate the LWR and the condition factor for 12 freshwater fish species from the Igarapé Fortaleza basin, a tributary of the Amazonas River system in the State of Amapá, eastern Amazon (Brazil). The coefficient of determination, the allometric condition factor and the allometric coefficient varied among species, and were compared with populations elsewhere. In 83.3% of the species, the allometric coefficient remained within the expected range. This was the first record of LWR parameters for Acestrorhynchus falcirostris.

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.

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