Journal La Lifesci <p>International <strong>Journal La </strong><strong>Lifesci</strong>&nbsp; ISSN 2721-1207 (online) and ISSN 2721-1304 (Print) includes all the areas of research activities in all fields of Life Sciences such as Agricultural, Fisheries, Earth, Environmental Science, Botany, Zoology, Microbiology, Ecology, Ethnobiology, Biodiversity And Conservation Biology, Genetics, Biochemistry , Bioinformatics, Biophysics, Biostatistics, Cytobiology Developmental Biology, Entomology, Immunology , Molecular Biology, Virology, agronomy, plant and animal breeding, agricultural economics and rural sociology,&nbsp; Veterinary science, Ornithology, Primatology, Biogeography, Histology, Marine biology, Biochemical Sciences Aquaculture, Fishery Hydrography, Fishery Engineering, Aquatic ecosystem, Fish farming, Fisheries management, Fishery Biology, Wild fisheries, Ocean fisheries, and all fields related to life sciences.</p> en-US (Andrew Setiawan Rusdianto) (Mujib Hasib) Sat, 31 Oct 2020 00:00:00 +0700 OJS 60 Antibacterial Property of Hanguana Malayana (Bakong) Crude Leaf Ethanolic Extract against Staphylococcus Aureus <p class="Abstract"><span lang="EN-GB">Hanguana Malayana, known as Bakong plant is an invasive macrophytic plant found in few regions of the Philippines. Due to its mode of propagation, it occupies large spaces and it invades the space that’s allotted for the crops of local farmers. Hence, the researchers investigate this plant for beneficial uses. In this study, the effect of the different concentrations of H. malayana crude ethanolic leaf extract on S.aureus is evaluated on the basis of the study stating that the plant is a potential resources of bioactive phytoconstituents. The bioactive compounds shows synergistic impact that made it have an compelling antibacterial property against Staphylococcus aureus. In this think about, it was as it were demonstrated to have antibacterial property against gram-positive microbes, Staphylococcus aureus. This research concluded that the Hanguana malayana crude leaf ethanolic extract has an antibacterial property against Staphylococcus aureus.</span></p> Vandon T. Borela, Jan Arianne B. Urbano, Andrei Joshua A. Tayag, Myco G. Teresa Copyright (c) 2020 Journal La Lifesci Mon, 28 Dec 2020 00:00:00 +0700 Assessment of Ectoparasites and Heavy Metal Concentrations in Hemichromis Fasciatus, Liza Falcipinnis and Sarotherodon Galileus <p><em>Ectoparasites and heavy metal pollution pose health risks to both wild and aquaculture fish species. Here, we examine the ectoparasites of fish species (Hemichromis fasciatus, Liza falcipinnis and Sarotherodon galileus) from Abalama and Ilelema locations of the Buguma Creek, Rivers State, Nigeria, over a period of six months (February to July, 2020). Fish tissues (muscles, gills and gut) were also examined for heavy metals (Cr, Cd and Pb). Parasitological investigations were done following standard procedures, as well as the heavy metal analysis which was done using atomic absorption spectrophotometer after dry ashing-acid digestion. Two ectoparasites were isolated: Zeylanicobdella arugamensis from L. falcipinnis at both locations and Cymothoa exigua from H. fasciatus at Ilelema. In surface water, Cr concentration was &lt;0.003µg/l throughout the study period; Cd concentrations ranged between 0.06µg/l and 0.09µg/l at both locations, while Pb values were 0.29µg/l - 0.64µg/l at Abalama, and 0.56µg/l – 0.71µg/l at Ilelema. These values were within international acceptable standards. In fish tissues, however, Cr values were &lt;0.003µg/g in both locations throughout the study period. At Abalama, Cd ranged between 7.18µg/g and 8.15µg/g, and Pb between 72.83µg/g and 92.23µg/g. At Ilelema, Cd concentrations were between 7.56µg/g and 8.67µg/g while Pb values ranged between 78.32µg/g and 92.88µg/g. Differences in heavy metal concentrations in both water and fish tissues between both locations were not statistically significant (p&gt;0.05). All fish species and tissues bioaccumulated appreciable concentrations of the heavy metals. Cr in fish tissues was within permissible limits, but all Cd and Pb values exceeded international permissible limits.</em></p> Ikiriko N, Robert B, Amuzie C C Copyright (c) 2020 Journal La Lifesci Sat, 26 Dec 2020 00:00:00 +0700 Endo-Helminth Fauna of the Rainbow Lizard (Agama Agama) <p><em>This parasitological study was carried out between February and May 2019 to determine the prevalence and intensity of helminthiasis in the rainbow lizard (Agama agama) in Okrika, Rivers State, Nigeria. A total of one hundred and fifty-one (151) specimens made up of 93 males and 75 females were caught by a local netting system during the day and anaesthesized with chloroform. Samples were collected from two stations (Ogoloma-Ama and Oba-Ama). After dissection, the esophagus, stomach, small intestine, rectum, liver, lungs, urinary bladder, heart and body cavity were searched for helminths using conventional methods. Five species of helminths belonging to Nematoda - Strongyluris brevicaudata, Parapharyngodon awokoyai, encysted Ascaridida larva, Cestoda - Oochoristica sp. and Trematoda - Mesocoelium spp -&nbsp; were recovered from infected lizards. Helminths infected one hundred and twenty-three (123) (82%) of the lizards. In Oba-Ama, forty-five (45) (76.3%) out of 59 and in Ogoloma-Ama, seventy-eight (78) (84.8%) out of 92 were infected with helminths. By abundance, in both locations, the males were more infected than their female counterparts with a prevalence of 51(93%) and 72(75%) (P&lt;0.05), respectively. This study has revealed the helminth parasites infecting the agamid lizard of Rivers State, Nigeria. It has also shown some unidentified species of Mesocoelium and&nbsp; Oochoristica sp. Additionally the trapping system used was also found to be effective and efficient.</em></p> Belema Robert, Nioking Amadi, Chidinma Charity Amuzie, Adaobi Patricia Ugbomeh Copyright (c) 2020 Journal La Lifesci Sat, 26 Dec 2020 00:00:00 +0700 Adoption Choice of Risk Management Tools in Agricultural Production under Climate Change <p>The long term impact of climate change is likely to affect food security and therefore prompts the agricultural sector to be more resilient to production and market risk, and uncertainties caused by these changes in climate. Choosing from a wide range of risk management tools can help farmers manage uncertainties and adapt to climate change. However, the choice of adoption of these risk management tools are greatly influenced by a number of factors. An empirical study was conducted to estimate the factors influencing the adoption choice of agricultural risk management tools by farmers in Akwa Ibom State, Nigeria. Multistage sampling procedure was employed to select the representative farmers for the study. Information were elicited from farmers using questionnaires. Factors influencing the adoption of crop diversification, insurance and contract farming were analyzed using multinomial logit approach. Empirical results revealed that the decision to adopt crop diversification and insurance were inversely and significantly affected by age of the farmers. Results further showed that farmers decision to adopt crop diversification and contract farming as risk management tools were positively and significantly influenced by the size of farmland at (p&lt;0.05). Findings also showed that access to weather information and frequency of extension contact significantly influenced farmers decision to adopt crop insurance and crop diversification respectively at 10% level. Result indicates that farmers decision to adopt crop diversification as a risk management tool was positively affected by frequency of extension contact. Promoting efficient and effective extension service delivery, access to weather and climate information and human capital development would be sensible policy options.</p> Nsikak-Abasi Etim, Dorothy Thompson, NseAbasi Etim Copyright (c) 2020 Journal La Lifesci Sat, 26 Dec 2020 00:00:00 +0700 Application of Gene Classification in Cytogenetics <p><em>Generality and individuality are the inherent nature of everything, everything has both generality and individuality. Generality determines the basic nature of things, and individuality reveals the differences between things. According to the principle of dialectical materialism, the genes of organisms are divided into two types: General genes and individual genes. Genes shared by all biological individuals are called general genes, and genes unique to each individual organism are called individual gene. And use this classification method to discuss the three basic laws of genetics, heterosis theory and mutual affinity, and population genetics and biological evolution. It is concluded three basic laws of genetics are only relative to individual genes, unit traits controlled by general genes are not restricted by three basic laws of genetics, and the proportion of individual gene and general gene between parents has a decisive influence on the mutual affinity of parents and heterosis of hybrid generation, and the gradual process of the evolution of life from simple to complex, from low-level to high-level, is achieved by that the mutations to generate firstly new individual genes, and then the favorable individual genes are generalized, which the individuality genes are transformed into general genes that the individual characters can be transformed into the common characteristics of the population, and the process of natural selection is just to fix the favorable individual genes, make the traits controlled by them change into the general characteristics of this population, and to eliminate the unfavorable genes, and eliminate the unfavorable traits..</em></p> Huai Tang Gu Copyright (c) 2020 Journal La Lifesci Sat, 26 Dec 2020 10:35:39 +0700