| dc.description.abstract | African catfish (Clarias gariepinus) transgenic F3 containing Pangasius
hypothalmus growth hormone (PhGH) genes can growth twice the average weight
of the control population. However, before transgenic African catfish are released
and utilized, their genetic impact on the natural environment must be examined.
Predator avoidance is one of the major fitness traits determining potential
environment risk. To determine the predator avoidance ability and growth
performance of transgenic African catfish, various densities of transgenic and nontransgenic
African catfish were communally stocked in 35/aquarium without
supplemental feeding. The average length of African catfish (Clarias gariepinus)
range between 4,49 ± 0,27 cm and the average weight range between 0,79 ± 0,14 g
were stocked as predators. Non-trangenic African catfish had better predator
avoidance than transgenic African catfish. There was no significant difference in
growth performance between transgenic and non-transgenic African catfish in
aquarium without supplemental feeding. This findings indicate that transgenic
African catfish could be used for commercial aquaculture without affecting the
natural environment because the increased susceptibility of transgenic African
catfish to predators would most likely decrease or eliminate the transgenic
genotype. | en_US |
