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
Keywords
Related Articles
- EP ID EP653820
- DOI 10.24297/jbt.v2i2.5045
- Views 57
- Downloads 0
Isolation and Optimization of Lipid Production from Drechslera Sp. and Feasibility of using Orange Peel as a Substrate for Growth
This study deals with isolation and optimization of soil origin fungus Drechslera sp. with valued unsaturated fatty acids using orange peel as a substrate. Accordingly, to maximize oil production, various parameters were...
Induction of callus and somatic embryogenesis from explants of Parkiabiglobosa (Jacq.)Benth and ParkiaroxburghiiG.Don.
Legumes are very important species including herbs, shrubs and trees, they are cultivated worldwide for different economic uses.Parkiais genus belongs to the Legumefamily, Fabaceae. The most common known species are P. b...
Molecular Typing by Polymerase Chain Reaction Sequence Specific Primers (PCR- SSP) of Human Leukocyte Class I and Class II Alleles in a Sample of Iraqi Visceral Leishmaniasis Patients
Objectives: This study aimed to investigate the association between HLA alleles and visceral leishmaniasis (VL) in a sample of Iraqi patients. Methods: A total of 30 patients were studied, in addition to 20 age, gender...
CELL SURFACE PROPERTIES OF HALOTOLERANT PROBIOTIC LACTOBACILLI
Cell surface characteristics of two halotolerant commercial probiotics (Lactobacillus casei Shirota and L. plantarum 299v) and three halotolerant potential probiotics (L. plantarum, L. pentosus and L. acidipiscis) isolat...
Extraction and Purification of Antimicrobial Proteins from Datura Stramonium Seed
Resistant to antibiotics by microbes have become a major global challenge incurring economic and public health burden. Hence, research to develop new effective anti-biotics should be a major consideration to pharmaceutic...