Defect in dissemination of fish breeding and other related technologies raise a question of sustainability to the aquaculture sector of three eastern states of India
Journal Title: JOURNAL OF ADVANCES IN BIOTECHNOLOGY - Year 2012, Vol 2, Issue 2
Abstract
Through the implementation of induced breeding technology into farming condition, fish production from inland sector increased substantially from 0.9 million tones in 1977-78 to 1.54 million tones in 1990-91, as the major hatcheries in Bengal has come up in 1980s. Following the Bengal, the fish breeders of Assam and Bihar started establishing hatchery after getting primary training from Bengal breeders. Within very short period of introduction of technology, the greedy and ignorant farmers of the three states started practicing improper breeding practices like mixed spawning, use of small number of breeding population and indiscriminate hybridization for their profit and convenience. Mixed spawning leads to hybridization inadvertently and ultimately affect the native gene pool. Maintenance of small number of founder population leads to inbreeding and the obvious genetic consequences are the increased fry deformities (37.6%), decreased food conversion efficiency (15.6%) and fry survival (19%). Again the undesirable hybrids when find their way into natural system results in genetic intermixing and affects the genetic biodiversity of the native fish fauna. Along with these the fish breeders are introducing alien fishes almost every year without maintaining any code of practice. This alien introduction and repeated use of unauthorized drugs and feeds (composition totally unknown) severely affecting the native biodiversity and unless checked early it may lead to the extinction of some of the prized fishes of India.
Authors and Affiliations
N. R. Chattopadhyay
In Silico Characterization of Ageratum Enation Virus, Ageratum Leaf Curl Betasatellite and Marigold Leaf Curl Alphasatellite Infecting an Important Ornamental Plant Marigold (Tagetes Patula) in Indian Subcontinent.
Ornamental plants act as an alternate host of begomoviruses and its associated satellite molecules in the absence of main crop. Marigold (Tagetes patula) an important ornamental plant, widely cultivated in India were fou...
Development, Optimisation, Validation and Inter-Laboratory Verification of a Reversed Phase HPLC Method for Quantification of Human Recombinant Insulin
HPLC methods for insulin in official monographs require extended runtimes and elevated temperatures. Inter-laboratory reproducibility of HPLC methods obtained from published literature is an on-going challenge, moreso fo...
Study genetic diversity in maize inbreds and improved hybrid vigor in hybrids produce to determine commercial hybrids in Iraq
A field experiments was conducted in greenhouse to determinate the genetic diversity among 7 genotypes from maize(4 inbreds and 3hybrids) by using molecular markers with Random Amplified polymorphic DNA(RAPD),that...
Two-Phase Anaerobic Digestion of Municipal Organic Solid Wastes
Two stages anaerobic digestion of the organic fraction of municipal solid wastes (OFMSW) is proposed using a batch anaerobic trickling bed (BATB) reactor in the first hydrolysis and acidogenesis stage. At total solids lo...
1,3-PROPANEDIOL: STATISTICAL OPTIMIZATION OF MEDIUM TO IMPROVE PRODUCTION BY Clostridium beijerinckii DSM 791
Biodiesel is a promising alternative biofuel, and as its production increases, so does production of the principal co-product, glycerol. The present study is aimed at maximizing the glycerol consumption and 1,3-propanedi...