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Genetics and Molecular Biology in Aquaculture - Review -
Lakra, W.S. Asian Australasian Association of Animal Productio 2001 Animal Bioscience Vol.14 No.6
Genetics has played a pivotal role in increasing the world food production through revolutions in plant and animal sciences. Though the attention on fisheries has been inadequate but the growing importance of modern genetic manipulations and biotechnological innovations to aquaculture has been realized. Recent advances in fish genetics and molecular biology have provided a suite of useful techniques, which have several applications in aquaculture. This paper reviews the advancement in the applications of selection, hybridization, chromosome engineering, sex control, gene transfer and molecular technologies for enhanced aquaculture productivity.
Recent Advances in Biotechnology Applications to Aquaculture
Lakra, W.S.,Ayyappan, S. Asian Australasian Association of Animal Productio 2003 Animal Bioscience Vol.16 No.3
Biotechnological research and development are moving at a very fast rate. The subject has assumed greatest importance in recent years in the development of agriculture and human health. The science of biotechnology has endowed us with new tools and tremendous power to create novel genes and genotypes of plants, animals and fish. The application of biotechnology in the fisheries sector is a relatively recent practice. Nevertheless, it is a promising area to enhance fish production. The increased application of biotechnological tools can certainly revolutionise our fish farming besides its role in biodiversity conservation. The paper briefly reports the current progress and thrust areas in the use of synthetic hormones in fish breeding, production of monosex, uniparental and polyploid individuals, molecular biology and transgenesis, biotechnology in aquaculture nutrition and health management, gene banking and the marine natural products.
The cyclic and strongly connected of the products of intuitionistic fuzzy Mealy machines
Telesphor Lakra,T. Rajaretnam 원광대학교 기초자연과학연구소 2017 ANNALS OF FUZZY MATHEMATICS AND INFORMATICS Vol.13 No.3
This paper introduces an intuitionistic fuzzy Mealy machine(ifm) and various kinds of products of intuitionistic fuzzy Mealy machines such as intuitionistic cartesian product, intuitionistic full direct product, intuitionistic restricted direct product, intuitionistic cascade product and intuitionistic wreath product are analyzed. These products preserve the properties of cyclic, intuitionistic retrievable and strongly connected of intuitionistic fuzzy Mealy machines are examined.
Vijayata Sangwan,Sunita Siwach,Pinki Lakra,Mukesh Sangwan,Sanjeet Singh,Rajiv Mahendru 대한산부인과학회 2019 Obstetrics & Gynecology Science Vol.62 No.6
ObjectiveAfter globally acceptance of planned vaginal birth after cesarean section (VBAC), the mode of induction is still amatter of debate and requires further discussion. We aimed to study obstetric outcomes in post-cesarean patientsundergoing induction of labor with prostaglandin gel compared with patients who developed spontaneous laborpains. MethodsAll patients at 34 weeks or more of gestation with previous one cesarean section eligible for trial of labor aftercesarean section admitted in a labor room within one year were divided in 2 groups. Group one consisted of patientswho experienced the spontaneous onset of labor pains and group 2 consisted of patients who underwent inductionof labor with prostaglandin gel. They were analyzed for maternofetal outcomes. Descriptive statistics, independentsample t-test, and chi-square test were applied using SPSS 20 software for statistical analysis. ResultsBoth groups were comparable in maternal age, parity, and fetal weight, but different in bishop score, mode ofdelivery, and neonatal outcome. Admisson bishop score was 6.61±2.51 in group 1 and 3.15±1.27 in group 2 (P<0.005). In the patients who experienced spontaneous labor, 86.82% had successful VBAC. In the patients with induced labor,64.34% had successful VBAC with an average dose of gel of 1.65±0.75. Both groups had one case each of uterinerupture. The neonatal intensive care unit admission rate was 4.1% in group one and 10.4% in group 2. ConclusionThis study reflects that supervised labor induction with prostaglandin gel in previous one cesarean section patients isa safe and effective option.
Rana, R.S.,Bhat, K.V.,Lakhanpal, S.,Lakra, W.S. Asian Australasian Association of Animal Productio 2004 Animal Bioscience Vol.17 No.9
This study deals with the characterization of three populations (two hatchery and one natural) of Indian major carps Catla catla and Labeo rohita from different locations in India. The genetics of Indian major carps has been completely obscure and this is the first report on comparative allozyme variations in natural and hatchery population. The total 10 biochemical genetic markers used to measure interspecific and intraspecific level of diversity. The allele frequency data indicate different level of genetic variability in three populations. The hatchery population exhibited least polymorphism, low level of heterozygosity and genetic diversity.