Determination of larval development stages in beluga (Huso huso Linnaeus, 1758)
Journal Title: Agricultural Advances - Year 2014, Vol 3, Issue 1
Abstract
The study of egg andlarvae stages tn fishes is one of new fields in Ichthyology. There are manychanges in larvae stage and the study of fish bio-history can provide someinformation about the changes of this stage to us. In this study, the larvaedevelopment stages on 44 samples of Bluga larvae investigated based on themorphological observations, the pigments scattering pattern and finsdevelopment patterns. From the viewpoint of pigments pattern, the highestpigments were concentrated on the rear of head and between eyes and the lowestwas on fins bud, the tip of snout and under of lateral line of body. Themorphological observations in larvae stage indicated that larvae in early stagehas different shape than its puberty and its appearance will change in pamllelto its development during the time, so that at the end of this stage it is solike an adult fish. In same performed researches on larvae of other sturgeonspecies, there are relative similarity based on pigment scattering pattern butthere are significant differences in morphological observation and also thepattern of fins development.
Authors and Affiliations
N. Norouzi*| M.Sc Student of Fishery Department of Gorgan University., R. Ghorbani| Assistant professor of Fishery Department of Guilan University.
Keywords
Related Articles
- EP ID EP534
- DOI 10.14196/aa.v3i1.1152
- Views 486
- Downloads 26
Yield characteristics of goat’s meat in the semi-arid zone of north-western Nigeria
A study was conducted to characterize autochthonous goats of the semi-arid zone of North-western Nigeria for their meat potential. Thirty two intact male goats representing eight replicates of two breeds (Sokoto Red an...
Freezing stress effects on antioxidant enzyme activities, ion leakage and lipid peroxidation of olive (Olea Europaea L.
Changes in freezing injury percentage, malonaldehyde (MDA; as indicator of lipid peroxidation), antioxidant enzymes activity and proline content were monitored in the leaves of olive cvs. Fishomi and Roughani under dif...
Effects of age on organ weight and carcass characteristics of Japanese quail (Coturnix Japonica)
The work was carried out to study the effect of age on organ weight and carcass characteristics of Japanese quails (Coturnix japonica). The birds were housed in deep litter pen at the poultry unit of University of Maid...
Control of Colletotrichum truncatum causing anthracnose/pod blight of soybean by aqueous leaf extracts, biocontrol agent
A study was conducted in the of Department Plant Pathology, Marathwada Agricultural University, Parbhani, Maharashtra during 2009 to 2010 to control Colltotrichum truncatum causing anthracnose / pod blight of soybean w...
Comparative molecular characterization of three Diplozoon species from fishes of Kashmir Valley
Present study reports the results of molecular analysis of the internal transcribed spacer (ITS) of ribosomal DNA of 3 Monogenean species using polymerase chain reaction (PCR), nucleotide sequencing and construction of p...