Journal of Environment and Sociobiology

Biplob Kr. Modak ¹, Priyanka Chattoraj ²

Affiliations
1 Department of Zoology, Sidho-Kanho-Birsha University, Purulia-723101, IN
2 Jay Kay Nagar High School, Bidhanbag, IN

Abstract

Traditionally fish farmers are known to use neem (Azadirachta indica) leaves in treating fn rot diseases. The present work intends to verify the effcacy of this age old practice of the fsh farmers. The diseased Puntius sophore fsh were treated with different concentration (0.5ml/l to 3.5ml/l) of neem leaves extract in increasing array (i.e., 0.5ml/l, 1.0ml/l, 1.5ml/l, 2.0ml/l, 2.5ml/l, 3.0ml/l and then 3.5ml/l sequentially) at an interval of 24 hrs. The fsh under treatment show improvement but the best result is observed where fsh are treated with the dose of 3 ml/l for a period of one day. The present fnding validates the usefulness of application of neem leaves in treating fn rot disease of fshes by the fsh farmers.

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Riyanka Chattoraj ¹, Somnath Banerjee ¹, Priyanka Chattoraj ², Biplob Kr. Modak ¹

Affiliations
1 Department of Zoology, Sidho-Kanho-Birsha University, Purulia-723101, IN
2 Jay Kay Nagar High School (H.S.), Bidhanbag, IN

Abstract

Aquaculture represents the fastest growing food sector industry in the world. It is the source of livelihood of millions of common people. But with changing socio-economic conditions, poor marginal fish farmers are now facing problems to continue their age-old traditional profession. A good number of traditional small fish farmers either switch over to some other professions or are forced to take up some other additional jobs to meet their basic needs. Not only that, in the age of globalisation a significant number of small fish farmers turns into labour of fishery industry. In this connection a two years extensive socio-economic study of the small fish farmer community has been conducted at Raniganj-Barakar colliery zone (Burdwan district) of West Bengal. The study indicates that the reasons behind the unsustainable conditions of the small fish farmers are mostly due to lack of proper training, lack of functional co-operative system, lack of awareness, insufficient governmental support and political interference.

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Priyanka Chattoraj ¹, Biplob Kr. Modak ²

Affiliations
1 Jay Kay Nagar High School (H.S.), Bidhanbag, IN
2 Department of Zoology, Sidho-Kanho-Birsha University, Purulia-723101, IN

Abstract

Traditionally fish farmers are using neem (Azadirachta indica) leaves in treating fin rot diseases. The present work intends to verify the efficacy of this age old practice of the fish farmers. The diseased Puntius sophore fish were treated with different concentrations (0.5 ml/l to 3.5 ml/l) of neem leaves extract in increasing array (i.e, 0.5 ml/l, 1.0 ml/l, 1.5 ml/l, 2.0 ml/l, 2.5 ml/l, 3.0 ml/l and then 3.5 ml/l sequentially) at an interval of 24 hrs. The fish under treatment show improvement but the best result was observed when fish were treated with the dose of 3 ml/l. for one day. The present finding validates the usefulness of application of neem leaves in treating fin rot disease of fishes.

Keywords

Neem, Finrot, Puntius sophore, Traditional Knowledge.

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Riyanka Chattoraj ¹, Somnath Banerjee ¹, Priyanka Chattoraj ², Biplob Kr. Modak ¹

Affiliations
1 Department of Zoology, Sidho-Kanho-Birsha University, Purulia-723104, IN
2 Jay Kay Nagar High School (H.S.), Bidhanbag, IN

Abstract

Aquaculture represents the fastest growing food sector industry in the world. It is the source of livelihood of millions of common people. But with changing socio-economic conditions, poor marginal fi sh farmers are now facing problems to continue their age-old traditional profession. A good number of traditional small fish farmers either switch over to some other professions or are forced to absorb in some other additional jobs to meet their basic needs. Not only that, in the age of globalisation a signifi cant number of small fish farmers turns into labour of fishery industry. In this connection, a two years extensive socio-economic study of the small fish farmer community has been conducted at Raniganj - Barakar colliery zone (Burdwan district) of West Bengal. The study indicates that the reasons behind the unsustainable conditions of the small fish farmers are mostly lack of proper training, lack of functional co-operative system, lack of awareness, insuffi cient governmental support and political interference.

Keywords

Aquaculture, Socio-Economic Conditions, Raniganj-Barakar Colliery Zone, Fish Farmers.

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Saugata Basu ¹, Biplob Kr. Modak ², Durga P. Haldar ³

Affiliations
1 Department of Biology, Uttarpara Government High School, P.O. Uttarpara, Dist Hooghly, PIN 712 258, West Bengal, IN
2 A.M. College, P.O. Jhalda, Dist. Purulia, PIN 723 202, West Bengal, IN
3 Department of Zoology, University of Kalyani, Kalyani-741235, West Bengal, IN

Abstract

The paper records the prevalence of two major groups of protozoan fish parasites, viz., myxozoans (Myxozoa : Myxosporea : Bivalvulida) and trichodinids (Ciliophora : Mobilina : Trichodinidae) in pure and hybrid carps reared in three pisciculture ponds at Jhalda in Purulia, West Bengal. It has been revealed that infection rate was remarkably higher in hybrid carps. Monthly prevalence of these parasites obtained during the study period along with month-wise analysis of physical and chemical environmental parameters of pond water have also been incorporated.

Keywords

Pure and Hybrid Carps, Myxosporeans, Trichodinids, Prevalence, Purulia, West Bengal.

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Saugata Basu ¹, Biplob Kr. Modak ², Durga P. Haldar ³

Affiliations
1 Department of Biology, Uttarpara Government High School, P.O. Uttarpara, Hooghly-712 258 West Bengal, IN
2 A.M. College, P.O. Jhalda, Dist. Purulia-723 202, West Bengal, IN
3 Department of Zoology, University of Kalyani, Kalyani-741235, West Bengal, IN

Abstract

The genus Myxobolus Butschli, 1882 belongs to the class Myxosporea under the phylum Myxozoa. Large number of species have been described under this genus by different workers from various parts of this world. From food fishes of south Bengal, eleven species of Myxobolus were described by the present workers during 1998-2009. Brief diagnosis along with morphometric data of these species is communicated in the present paper.

Keywords

Myxobolus, Diversity, Food Fishes, South Bengal.

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