@article{MAKHILLJAVA201413154407,
title = {Effects of Salinity on Digestive Physiology During Early Ontogeny in Newly Hatched Larvae of European Sea Bass (D. labrax)},
journal = {Journal of Animal and Veterinary Advances},
volume = {13},
number = {15},
pages = {922-929},
year = {2014},
issn = {1680-5593},
doi = {javaa.2014.922.929},
url = {https://makhillpublications.co/view-article.php?issn=1680-5593&doi=javaa.2014.922.929},
author = {Cuneyt,Deniz,Muge,H. Okan,Kursat,Sahin and},
keywords = {Digestive enzymes,salinity,survival,lecithotrophic stage,Dicentrarchus labrax},
abstract = {In this study, the absorption dynamics of endogen food reserves
and also specific activities of main pancreatic and intestinal enzymes were
investigated in three different salinities (natural sea water, lower salinities
as 30 and 25-) during early ontogeny
in larvae of sea bass, Dicentrarchus labrax, until mouth opening. Among
experimental groups, mouth and anus were completely opened in larvae and also
although yolk sac was nearly absorbed in whole larvae, oil globule was not fully
depleted at the end of the 120th h after Hatching (HAH). In all experimental
groups, trypsin specific activity rapidly rose up during the first 48 HAH then
decreased. Also, this activity increased to until end of the experiment. Lipase
specific activity slowly increased during the first 48 HAH then rose up to 120
HAH. Amylase specific activity was almost stationary during the first 48 HAH
and then gradually increased to the end of the experiment. From this time to
the end of the experiment this activity slowly declined. For intestinal enzymes,
Alkaline Phosphatase (AP) and leu-ala peptidase activity presented converse
profile among the experimental groups. The specific activity of AP demonstrated
quite similar pattern for trypsin during the experiment. For leu-ala peptidase
activity, opposite pattern was observed for AP activity during the first 24
h, specific activity was relatively higher but after then, it slowly decreased
concurrently in all experimental groups. As a result of this study, obtained
results clearly summarized that significant differences were recorded in all
experimental groups, however, the lower salinity levels (25 and 30-)
in experimental groups demonstrated relatively significant and higher results
in terms of endogen reserves absorption, larval growth performance, survival
rate and digestive enzyme activities compared to natural sea water experimental
group (p<0.05).}
}