Life-History Characteristics of an Age-Validated Established Invasive African Sharptooth Catfish,Clarias gariepinus, Population in a Warm-Temperate African Impoundment

2013 ◽  
Vol 48 (2) ◽  
pp. 318-325 ◽  
Author(s):  
Reece Wartenberg ◽  
Olaf L.F. Weyl ◽  
Anthony J. Booth ◽  
Henning Winker
Keyword(s):  
Life History ◽  
Clarias Gariepinus ◽  
Life History Characteristics ◽  
African Sharptooth Catfish ◽  
Warm Temperate

Life history characteristics of an invasive cyprinid fish (Carassius gibelio) in Chimaditis Lake (northern Greece)

2008 ◽  
Vol 24 (2) ◽  
pp. 213-217 ◽  
Author(s):  
I. D. Leonardos ◽  
A. C. Tsikliras ◽  
V. Eleftheriou ◽  
Y. Cladas ◽  
I. Kagalou ◽  
...  
Keyword(s):  
Life History ◽  
Cyprinid Fish ◽  
Northern Greece ◽  
Carassius Gibelio ◽  
Life History Characteristics

Adaptive strategies and life history characteristics in a warming climate: Salmon in the Arctic?

2012 ◽  
Vol 96 (10-11) ◽  
pp. 1187-1226 ◽  
Author(s):  
Jennifer L. Nielsen ◽  
Gregory T. Ruggerone ◽  
Christian E. Zimmerman
Keyword(s):  
Life History ◽  
Adaptive Strategies ◽  
The Arctic ◽  
Warming Climate ◽  
Life History Characteristics

Cost-effectiveness, feed utilization and body composition of african sharptooth catfish (Clarias gariepinus, Burchell 1822) fingerlings fed locally formulated and commercial pelleted diets in tarpaulin tanks

2018 ◽  
Vol 26 (1) ◽  
pp. 39-52
Author(s):  
O.E. Afia ◽  
G.S. David
Keyword(s):  
Cost Effectiveness ◽  
Proximate Composition ◽  
Clarias Gariepinus ◽  
Stocking Density ◽  
Food Utilization ◽  
Feed Conversion ◽  
Efficiency Ratio ◽  
Commercial Diet ◽  
Commercial Feed ◽  
African Sharptooth Catfish

Cost-effectiveness, food utilization and proximate composition of Clarias gariepinus fingerlings fed locally formulated (sinking) and commercial (floating) diets in tarpaulin tanks were observed for 56 days. Ninety (90) C. gariepinus fingerlings with initial mean weight (72.99 g ± 3.09) per treatment were observed during the period with three replicates at a stocking density of 15 fish per m2. The fish were fed 5% body weight three times daily. Results showed that C. gariepinus fingerlings fed floating diet had significantly lower (p<0.05) feed conversion ratio (0.83 ± 0.03) than sinking diet (3.23 ± 0.40). Protein efficiency ratio was significantly (p<0.05) higher in fish fed commercial diet (2.69 ± 0.09) than locally formulated (0.80 ± 0.11). Specific growth rate was significantly (p<0.05) higher in floating (3.29 ± 0.07) than sinking diet (0.97 ± 0.20). Incidence cost was lower (₦1,989.65) in fish fed commercial diet than locally formulated (₦3,819.63). The profit index was higher in C. gariepinus fed floating diet (0.74) than sinking (0.19). From these findings, floating (commercial) feed is recommended for feeding C. gariepinus fingerlings since it showed better food utilization, better proximate composition of the carcass, higher profit index and consequently lower incidence cost.Keywords: Clarias gariepinus, cost-effectiveness, sinking feed, floating feed, incidence cost.

scholarly journals Larval density, temperature and biological aspects of Chrysomya megacephala (Diptera: Calliphoridae)

2006 ◽  
Vol 58 (4) ◽  
pp. 562-566 ◽  
Author(s):  
C. Reigada ◽  
W.A.C. Godoy
Keyword(s):  
Population Dynamics ◽  
Life History ◽  
Body Size ◽  
Larval Density ◽  
Chrysomya Megacephala ◽  
Life History Characteristics ◽  
Two Temperatures ◽  
Biological Aspects ◽  
Experimental Populations ◽  
Simultaneous Influence

The effect of larval density on the survival, fecundity and body size at two temperatures in experimental populations of C. megacephala was studied. No effect from simultaneous influence of density and temperature on life history characteristics of C. megacephala was found. Significant effects of density and temperature on survival, fecundity and body size were observed. The importance of these results for the population dynamics of C. megacephala is discussed.

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