Discussion of a master’s thesis in the Department of Biology Sciences entitled (Measurement of respiratory area and diameters of red muscle fibers and eggs in two types of local bony fish)

Master thesis discussion

The Department of Biology Sciences, College of Education for Pure Sciences / University of Karbala, discussed a master’s thesis tagged (Measurement of respiratory area and diameters of red muscle fibers and eggs in two types of local bony fish) by Fatima Hussein Al-Asadi, and under the supervision of Prof. Muhammad Wissam Haider, and the aim of the study was: to find out the level of movement activity of the fish of the current study, through:
Study of the glandular phenotypic characteristics related to numbers of gingival filaments, rates of their lengths, numbers of secondary gingival plaques per one millimeter, and area of ​​one secondary glandular lamellar; To find out the values ​​of the respiratory surface area rates represented by the absolute gills area (mm 2) and relative (mm 2 / g). And the study of some histological characteristics of the skeletal muscles, represented by measuring the diameters of the red and white muscle fibers in different body regions. And adding new academic information, which will be a scientific basis for future life studies. Among the conclusions of the study: The present study showed that the small fish in both studied species have a large glyph surface area (mm² / g) compared to the larger fish, which possessed a small glyph surface area. The mean factor of total gut length (L) was the main cause of increased respiratory surface area rates of gills in tilapia zillii C. Compared to tilapia, tilapia and tilapia were counted among intermediate fishes, depending on the mean total length of the gals. The results also showed that the diameters of the red muscle fibers were less than the white muscle fibers in the two studied types and for the different lengths studied in the same type. The results of the current study showed a decrease in the rates of the two muscle fiber diameters in the posterior region of the body, and this decrease in the muscle fiber diameters reflects the increase in the number of muscle fibers and their increased flexibility when moving, which reflects the importance of the caudal peduncle in combination with the tail fin in the movement of fish. The discussion resulted in several recommendations, including:
Conducting comparative studies to quantify the chemical components in the muscles of local river bony fish.
Perform comparative studies to quantify amino acids in the muscles of local bony fish. And conducting comparative histological studies on the susceptibility of fish tissues to environmental pollution. And the study of equipping muscles with oxygen and its effect on muscle metabolism and motor energy. The student obtained an excellent grade.