![]() Sacrificed larvae were weighed and measured. Survival was estimated by daily counting of dead larvae. Sampling time points were: hatching, schooling and complete yolk sac absorption. baerii yolk-sac larvae were subjected to three different stocking densities until complete yolk-sac absorption: 30, 80 and 150 larvae/l. Therefore, the aim of this study was to evaluate the effect of three stocking densities on larval growth, survival and muscle development in A. However, little information is available about the effects of rearing density on sturgeon yolk-sac larvae. The efficiency at which these reserves are utilized for growth is very dependent on environmental factors, such as stocking density. baerii occurs during larval development in particular in the free-embryo stage, during which larvae totally rely on endogenous yolk-sac reserves for energy and growth. Introduction: Given its high market value and conservation status, the Siberian sturgeon ( Acipenser baerii) is an important species in aquaculture. Lucia Aidos 1* Marco Lanfranchi 2 Mauro Vasconi 1 Francesco Abbate 3 Alessia Di Giancamillo 1ġDepartment of Health, Animal Science and Food Safety, Università degli Studi di Milano, Milano, Italy 2Società Naviglio Agricola SS, Goito, Italy 3Department of Veterinary Sciences, Laboratory of Zebrafish Neuromorphology, University of Messina, Messina, Italy 002 Effect of rearing density on Siberian sturgeon larval development The peripheral ventral and peripheral nasal corneal parts represent the permanent and endogenous source as well as a proliferative reserve of superficial corneal epithelial cells.Īll husbandry and experimental procedures were approved by the institutional ethics committee No. The topographic distribution of light, medium and dark cells showed a well-defined concentration of light younger cells in PV (92.5%), PN (78.5%), MN (78%), MT (74%), PD (73%), PT (70%), MV (68.7%), MD (66.3%) and C (19.3%) parts respectively.Ĭonclusion: The light younger cells extensively predominate on the medium and dark aged cells all over the corneal parts except the central part thus, representing an adaptive modification in relation to a severe environment. The PV part showed the highest density of light cells (1178 light cells), while the central part appeared to have the lowest density of light cells (166 light cells). Microplicae were more numerous over the light cells than others cells. Results: The superficial cells of the corneal epithelium were characterized by SEM as a light, medium and dark mosaic, polygonal cells covered with microplicae. Cells densities were analyzed using ImageJ-analysis software. All parts were examined using scanning electron and light microscopy separately. Each one was divided into nine small parts namely central (C), middle dorsal (MD), middle ventral (MV), middle nasal (MN), middle temporal (MT), peripheral dorsal (PD), peripheral ventral (PV), peripheral nasal (PN), peripheral temporal (PT). Materials and Methods: A total of 12 healthy corneas obtained directly post-mortem. The present study aimed to describe the shape, topographic distribution and density of the surface cells of corneal epithelium in dromedary camel using SEM study. There are no reported scanning electron microscopy (SEM) studies on the anterior surface of corneal epithelium in dromedary camel. Introduction: It is expected that the surface cells of corneal epithelium in dromedary camel play an effective and influential role in survivals in the arid and semiarid regions. 001 Scanning electron microscopy of the anterior surface of corneal epithelium in the dromedary camelġDepartment of Anatomy and Embryology, Faculty of Veterinary Medicine, University of Sadat city, Sadat city, Egypt 2Department of Veterinary Anatomy, Faculty of Agriculture, Tottori University, Tottori, Japan
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