Akademik Veri Yönetim Sistemi
Su Ürünlerinde Modern Perspektifler, Boran KARATAŞ, Editör, Iksad Publications , Ankara, ss.293-312, 2022
Although aquarism is generally regarded as a hobby, it has actually
turned into an agricultural sector that attracts millions of people
around the world with has a very high economic return in terms of
aquaculture (Hekimoğlu, 2006). Therefore, it is very important for the
ornamental fisheries sector to ensure the efficient production of
aquarium fish species. The highest losses in the production of
ornamental fishes occur in the embryonic and larval stages. From this
point of view, monitoring the developmental stages of fish eggs and
larvae; it is so important to reduce early larval losses, to ensure egg
hatching with low mortality rates in the embryo stage and to
determine the development of the digestive system in the process up
to the post larval stage and to perform feeding practices effectively.
Limited enzyme activity and undeveloped or not fully developed
digestive system in the early life stage of fishes prevent the digestion
of artificial powderbaits. Various zooplankton (Artemia sp.,
Brachionus plicatilis and infusoria e.g.) are used at this stage. And
then the mouth gap size of the larvae determines which of these live
baits will be used in the first feeding.Feeding live baits in freshwater and marine fish hatcheries creates
high economic costs. This makes it necessary to transition to artificial
powder feeds as soon as possible. For example, Person Le Ruyet et al.,
(1993) reported in a study that making the transition to artificial
feeding 15 days earlier in sea bass (Dicentrarchus labrax) larval
rearing could result in 80 percent savings in artemia usage rates.