Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Monogenetic Trematodes Infestations in Indian Major Carps of Mymensingh Region

David Rintu Das
Bangladesh Fisheries Research Institute, Floodplain Substation, Santaher, Bogra-5891, Bangladesh.

Shankar Majumder
Department of Agricultural Statistics, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Kirtunia Juran Chandra
Department of Aquaculture, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh.

Abstract/ Executive Summary:

A study was conducted to investigate the infestations of monogenetic trematodes of juvenile carps of Mymensingh region. A total of eight (8) farms, four Government (Govt.) and four Private (Pvt.) fish farms were investigated of Indian major carps - Catla (Catla catla), Rui (Labeo rohita) and Mrigal (Cirrhinus cirrhosus) during June, 2010 to May, 2012. Monthly samplings were carried out with 5 fishes of each species and each farm. Altogether 2880 fish host were examined of which 1424 hosts were found to be infested with monogenetic trematodes of which 626 from Govt. and 798 from Pvt. farms. The monogeneans were very common in gills of all fishes. Water quality parameters were taken and management practices were also noted. The risk of infestation by monogeneans of carp significantly (p<0.001) increased when the water quality parameters were deteriorated. Prevalence (%), mean intensity and abundance were found to be species specific and also varied with seasons and management systems practiced by different farmers. Prevalence (%) of monogeneans in carps was significantly (p< 0.001) higher in Pvt. farm than that of Govt. farms. The prevalence (%) of monogeneans were significantly (p< 0.01) higher in rainy season than dry season. Mrigal was more infected by monogeneans followed by Catla and Rui.

Keywords: Monogenetic trematodes, Infestations, Juvenile, Indian major carps

Location: Bangladesh Fisheries Research Institute (BFRI), Fish Seed Multiplication Farm (Maskanda), Fish Seed Multiplication Farm (Shambhugonj), Fish Seed Multiplication Farm (Gouripur)) and 4 Private farms (Brahmaputra Fish Farm, Deshbondhu Fish Farm, Pankouri Fish Farm and Sornolota Fish Farm)

Start Date: 00-06-2010

End Date: 00-05-2012

Program Area: Pest Management

Commodity: Fish

Objectives:

To investigate the infestations of monogenetic trematodes of juvenile carps of Mymensingh region

Methodology:

For monogenean investigation eight fish farms, 4 Government Farm (Bangladesh Fisheries Research Institute (BFRI), Fish Seed Multiplication Farm (Maskanda), Fish Seed Multiplication Farm (Shambhugonj), Fish Seed Multiplication Farm (Gouripur)) and 4 Private farms (Brahmaputra Fish Farm, Deshbondhu Fish Farm, Pankouri Fish Farm and Sornolota Fish Farm) were selected. To observe the seasonal variation three distinct seasons were used as rainy season (June-September), winter (October-January) and summer (February-May) in the experimental period. Catla, Rui and Mrigal were selected as the experimental fish and sampled regularly by visiting the experimental ponds as similar were being conducted in those pond. Experimental fish were collected for a period of 24 months from June 2010 to May 2012 for the study. Samplings were carried out from the farms at monthly intervals. During each sampling 5 fishes from each species were collected from eight ponds with the help of seine net. Fish samples were transported to the Fish Disease Laboratory of the Dept. of Aquaculture, BAU with plastic containers and bags. The young carps or juvenile were examined quickly to observe for monogeneans infestation, injury, infection and other abnormal conditions of fish body. Fishes were killed by a blow on the head. Both the opercula of the fish were removed by scissors to remove the gills and dissected gills were placed in petridish containing clean water. Prior to gill removing external examination were made by scrapping the skin and examining smear using a magnifying glass or by under microscope. Prevalences of monogenean parasites were computed by the following formula: Chi-square and normal tests had been performed for testing the significance of the variation in prevalence of monogenea of different species, seasons and farms. Comparison of two prevalence were made by normal test and chi-square test was used for examining the existence of overall significant differences among more than two prevalence, but their mutiple comparisons were done by Tukey-type test. In Tukey-type test, prevalence were transformed by the following arcsin transformation formula due to its preference by many researchers. Mean intensity and abundance of monogenea in different types of juvenile carp fishes corresponding to the different seasons as well as farms were compared by Tukey tests. All the statistical analyzes were done by SPSS (Statistical Package for Social Science) and MS Excel.

Source of Information: Res. Agric. Livest. Fish., Vol. 3, No. 1, April 2016: 187-194

Article Link (Online Journal): DOI: http://dx.doi.org/10.3329/ralf.v3i1.27877

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The present study highlighted the infestation and disease problems, including their identity. Monogeneans were found mainly in gills. Infestation started at the early stage of fish life, highest infestation of monogeneans was found in Mrigal. Monogeneans infestation was a common problem of fish farming system both in nursery and culture ponds in Mymensingh region. Total fish production could be significantly increased by controlling the infestations and diseases.

Knowledge Management: Journal