Veterinarski arhiv, Vol. 71 No. 5, 2001.
Izvorni znanstveni članak
Myxosporidian infection of gills and skin among carp from nursery ponds in Bangladesh: histopathology.
Mohammad Abdul Awal
; Department of Anatomy and Histology, Faculty of Veterinary Science, Bangladesh Agricultural University, Bangladesh
Anjuman Are Begum
; Department of Aquaculture, Faculty of Fisheries, Bangladesh Agricultural University, Bangladesh
Kartic Juran Chandra
; Department of Aquaculture, Faculty of Fisheries, Bangladesh Agricultural University, Bangladesh
Gias Uddin Ahmed
; Department of Aquaculture, Faculty of Fisheries, Bangladesh Agricultural University, Bangladesh
Masamichi Kurohmaru
; Department of Veterinary Anatomy, Faculty of Agricultural and Life Sciences, The University of Tokyo, Bunkyo-ku, Japan
Sažetak
Histopathological studies of gills and skin of juvenile carp infected with myxosporidian protozoans in two fish farms (Trisal Government fish farm and Jhalak Private fish farm) of Mymensingh district in Bangladesh were carried out during the period September to December 1994. A total of 140 carp ranging from 4 to12 cm in total length were examined and comprised 70 Labeo rohita (L. rohita), and
70 Cirrhina mrigala (C. mrigala). Samplings were carried out at 15 -day intervals. Pathological symptoms were more prominent in carp at the Government fish farm (GFF) than in those at the Private fish farm (PFF). Marked pathological changes were limited to the gills and skin of C. mrigala at the GFF in December 1994. Hyperplasia and hypertrophy, with presence of numerous inflammatory cells and an accumulation of blood cells, were observed at the base of secondary gill lamellae of C. mrigala at the GFF. Myxosporidian cysts, identified as Myxobolus spp. and full of mature spores, were attached to the secondary gill lamellae. A significantly increased number of cysts were recognizedin the gills of C. mrigala at the GFF compared to those of L. rohita at the PFF. The skin of C. mrigala at the GFF exhibited an increased number of pathological changes. Epidermis and dermis sloughed off, the dermal layer split into a few parts, and Myxosporidian cysts full of mature spores appeared in the skin of C. mrigala. At the PFF, the skin of L. rohita was less infected than C. mrigala. Apparently healthy fish fry was found to be free from cysts. No significant differences of water quality parameters were recorded at either fish farm. Carp at the PFF were less infected than those at the GFF, probably due to its better management practices.
Ključne riječi
histopathology; carp; myxosporidia; Bangladesh
Hrčak ID:
89356
URI
Datum izdavanja:
17.10.2001.
Posjeta: 1.366 *