Rahman Alimi; Ahmad savari; Abdolali Movahedinia; Mohammad Zakeri; Negin salamat
Abstract
The Brown banded Bamboo shark is a benthic shark and unlike most of shark, to attract the oxygen in the water no need to move constantly. In this investigation, 36 individual of Brown banded Bamboo sharks (Chiloscyllium punctatum) were caught from Dervish's Creek in the northern Persian Gulf. Certain ...
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The Brown banded Bamboo shark is a benthic shark and unlike most of shark, to attract the oxygen in the water no need to move constantly. In this investigation, 36 individual of Brown banded Bamboo sharks (Chiloscyllium punctatum) were caught from Dervish's Creek in the northern Persian Gulf. Certain sections of the gill tissue removed and immediately fixed in Bouin’s solution. Then embedded the samples in paraffin and sectioned into 5 micrometer microscopic and stained with hematoxylin and eosin. In order to evaluate the comprehensive, sagittal and cross-section of gill tissue were studied. Microscopic results of cross-section indicated that the gill tissue structures including, filaments and lamella sections revealed. In addition, a variety of cells such as columnar cells and chloride cells (MR) were also detected. According to the results obtained for the cross section, The cell aggregates, named follicularlyarranged NKA-rich cells (follicular NRCs), were found in the gills septum. Therefore, the Brown banded Bamboo shark has three types of NKA-rich cells in the gill: (1) NKA-rich MR cells on the filament and lamella, (2) NKA-rich solitary cells (solitary NRCs) and (3) follicular NRCs on the gill septum.
علوم زیستی دریا
Rahman Alimi; Ahmad Savari; Abdolali Movahedinia; Mohammad Zakeri; Negin Salamat
Abstract
Cartilaginous fishes were used urea for osmoregulation of their internal fluids. There are several studies on osmoregulation of sharks but investigate the role of reproduction season and body lenght on the concentration of osmolytes is necessary. In this investigation, 36 individual of Brown banded Bamboo ...
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Cartilaginous fishes were used urea for osmoregulation of their internal fluids. There are several studies on osmoregulation of sharks but investigate the role of reproduction season and body lenght on the concentration of osmolytes is necessary. In this investigation, 36 individual of Brown banded Bamboo sharks (Chiloscyllium punctatum) in both autumn (before reproduction) and spring (period of reproduction) seasons were caught from Moussa Creek located at the northern of Persian Gulf. After weighing, biometry, sex determination and the numbering of sharks. Electrolyte analyzer and auto analyzer were used to measuring electrolyte and urea concentration. The results showed that blood osmolytes of sharks in the male and female sex were no significant differences (P>0/05). But, there was a significant difference between the concentrations of these substances in the autumn and spring season (P