Stocking density-dependent growth and survival of Asian sun catfish, Horabagrus brachysoma (Gunther 1861) larvae

2010 ◽  
Vol 26 (4) ◽  
pp. 609-611 ◽  
Author(s):  
S. K. Sahoo ◽  
S. S. Giri ◽  
S. Chandra ◽  
A. K. Sahu
Keyword(s):  
Stocking Density ◽  
Growth And Survival ◽  
Density Dependent ◽  
Dependent Growth

Growth rates of black caiman (Melanosuchus niger) and spectacled caiman (Caiman crocodilus) from two different Amazonian flooded habitats

2013 ◽  
Vol 34 (4) ◽  
pp. 437-449 ◽  
Author(s):  
Ronis Da Silveira ◽  
Zilca Campos ◽  
John Thorbjarnarson ◽  
William E. Magnusson
Keyword(s):  
Growth Rates ◽  
Biotic Interactions ◽  
Alligator Mississippiensis ◽  
Growth And Survival ◽  
Density Dependent ◽  
Demographic Models ◽  
Caiman Crocodilus ◽  
Dependent Growth ◽  
Rates Of Growth ◽  
Dependent Processes

Rates of growth and survival in wild populations are affected by the physical environment, biotic interactions, and density-dependent processes, such as growth and fecundity. However, the relative importance of these factors in long-lived reptiles is poorly understood. We analyzed growth rates of Melanosuchus niger and Caiman crocodilus coexisting in two areas of the Brazilian Amazon with very different environmental characteristics. Growth rates of Caiman crocodilus at the two sites were similar, but M. niger grew more slowly in the area with higher productivity and higher density of caimans. Growth rates of the same species from other sites and of the temperate-zone Alligator mississippiensis indicate large differences among sites, but little evidence that these differences are primarily due to differences in productivity or temperature. Demographic models used to estimate sustained yields from caiman harvests should take into account the likely importance of density-dependent growth.

Stocking density-dependent growth of Dover sole (Solea solea)

Aquaculture ◽  
2006 ◽  
Vol 252 (2-4) ◽  
pp. 339-347 ◽  
Author(s):  
E. Schram ◽  
J.W. Van der Heul ◽  
A. Kamstra ◽  
M.C.J. Verdegem
Keyword(s):  
Stocking Density ◽  
Density Dependent ◽  
Solea Solea ◽  
Dependent Growth ◽  
Dover Sole

scholarly journals Effects of stocking density on growth and production in monoculture of Thai sharpunti (Barbonymus gonionotus)

2017 ◽  
Vol 28 (3) ◽  
pp. 249-252
Author(s):  
M Al-Emran ◽  
R Rahman ◽  
MI Miah ◽  
M Shahjahan
Keyword(s):  
Crude Protein ◽  
Stocking Density ◽  
Total Production ◽  
Net Benefit ◽  
Density Dependent ◽  
Commercial Diet ◽  
Dependent Growth

An experiment was carried out to study the density dependent growth of Thai sharpunti (Barbonymusgonionotus) for two months period. Three stocking densities such as 50/decimal, 100/decimal and 150/decimal representing treatment one (T1), treatment two (T2) and treatment three (T3), respectively were tested in three replications. A commercial diet (25% crude protein) was supplied twice daily throughout the study period up to satiation level. The total production of sharpunti was found 14.67 ± 2.05, 27.06 ± 3.09 and 36.87 ± 2.16 kg/decimal in T1, T2 and T3, respectively and they were significantly different (p<0.05) from each other. A higher net benefit of BDT 1079.50 was obtained from T2 where the stocking density was 100/decimal. The present study indicated that the growth and production of Thai sharpunti was density dependent in monoculture systems.Progressive Agriculture 28 (3): 249-252, 2017

scholarly journals Dispersal and density-dependent growth of Atlantic salmon (Salmo salar) juveniles: clumped versus dispersed stocking

2017 ◽  
Vol 74 (9) ◽  
pp. 1337-1347 ◽  
Author(s):  
Eric Blake Brunsdon ◽  
Dylan John Fraser ◽  
William Rundle Ardren ◽  
James William Angus Grant
Keyword(s):  
Growth Rate ◽  
Atlantic Salmon ◽  
Salmo Salar ◽  
Negative Power ◽  
Growth And Survival ◽  
Density Dependent ◽  
Atlantic Salmon Salmo Salar ◽  
Nesting Sites ◽  
Juvenile Habitat ◽  
Dependent Growth

Dispersal from nesting sites and habitat selection are essential for the fitness of young individuals and shape the distribution, growth, and persistence of populations. These processes are important to consider when releasing young, hatchery-origin fishes into the wild to restore extirpated or depleted populations. By manipulating the density of released young-of-the-year (YOY) Atlantic salmon (Salmo salar), we evaluated the effects of clumped- (releasing all the fish at one location) and dispersed-stocking (releasing the fish evenly over a complete reach) treatments on juvenile habitat use, dispersal, growth, and survival. Across 14 river reaches, clump-stocked YOY density decreased and growth rate increased with distance downstream, whereas dispersed-stocked YOY densities and growth were relatively constant. Overall, density, spatial variance in density, growth, and survival did not differ between these two stocking treatments, likely due to the greater-than-expected mobility of fish in clumped-stocking reaches; YOY dispersed up to 1600 m, with 41% moving over 200 m downstream. As predicted from previous work, growth rate of individual fish was density-dependent, following a negative power curve. Our results provide insights into how the growth and survival of released individuals are altered via stocking treatments, ultimately shaping their distribution and growth rate.

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