| dc.description.abstract | In order to identify the processes of spermatogenesis and to identify the peak breeding season
towards furnishing guidelines for induced breeding of an endangered fish species mud eel
(Monopterus cuchia), an investigation was conducted for one year (January 2015 to December
2015) at the Department of Fisheries Management, Bangladesh Agricultural University,
Mymensingh. Samples of mud eel were collected from haor and beel areas of Mymensingh and
Netrokona districts. The investigations were included the observation of month-wise maturation
of testis, determination of the peak breeding season, identification of the process of
spermatogenesis and furnish guideline for conservation of this endangered fish species.
Histological observation of testis was observed presence of Spermatogonia (SG), Spermatocyte
(SC), Spermatid (SD), Spermatozoa (SZ) stages of spermatogenesis during samples from
different seasons. In this study, the mature stages of spermatogenesis Spermatid (SD) and
Spermatozoa (SZ) were found from April to June samples of testis, indicating the breeding
season of M. cuchia. These mature stages were occurred high in proportion during late April to
mid May samples indicating peak breeding season of this fish. The testis was contained
developing stages Spermatogonia (SG), Spermatocyte (SC) and empty lumen from July to
February, indicating spent and resting phases of testis during these months. It is expected that the
preliminary information generated on the spermatogenesis of M. cuchia can serve as the base
line information for further research on this fish with an aim of establishing the package of
induced breeding and to manage and conserve from the endangered condition. This study
provides the first detailed information about spermatogenesis of M. cuchia of Bangladesh. It is
implied that the information of this study can potentially be used for bringing a new high priced
fish into aquaculture for supporting export earnings of the country in future. | en_US |
