The Bison, October 5, 2018

Abstract

Malformacije se javljaju kod uzgojnih populacija mlaĎi lubina, a utječu na zdravlje ribe i njezinu ekonomsku vrijednost na trţištu. Posebna paţnja u radu usmjerena je na metodologiju i proces izdvajanja deformirane mlaĎi lubina u uzgoju. U svrhu pravilnog načina vredovanja deformiteta napravljenje su rendgenske slike cjelokupnog kostura izdvojenih jedinki. Zbog pojavnosti deformacija na kraljeţnici (>3%) u drugoj mrijesnoj seriji je obavljeno izdvajanje deformiranih jedinki od zdravih. U ukupnom uzorku bile su 103 jedinke. Najveći broj jedinki je imao skoliozu (83%), dvije jedinke su imale lordozu (1,9%), dok je pet jedinki imalo kifozu (4,8%). Normalnu kraljeţnicu je imalo 13 jedinki, ali su iste imale oštećen operkulum (12,6%). U uzgojnoj sredini, uz dane starosti jedinki pratile su se vrijednosti abiotičkih faktora: kisik, temperatura, ugljični dioksid i amonijak.Malformations that occur in breeding populations are the causative agent which affects the health of the fish and its economic value. Particular attention in this thesis is focused on metodology and the process of selection of sea bass juveniles with deformities. In order to obtain a better insight into the type of deformities, X-ray images of the entire skeleton were taken. Because of the manifestation with deformities (>3%) in the second hatchery series, a selection has been made in the pools, and within this gruop healthy and deformed individuals were divided. There were 103 individuals in the sample. The largest number of fishes had a scoliosis (83.0%). There were two individuals with lordosis (1.9%), five with kifosis (4.8%), and thirteen with normal spine, but with damaged operculum (12.6%). In the breeding environment, besides the age of individuals, other values were observed such as: oxygen, temperature, carbon dioxide and ammonia