187 results match your criteria: "Institute of Tropical Biology[Affiliation]"

Diminishing natural resources and increasing climatic volatility are impacting agri-food systems, prompting the need for sustainable and resilient alternatives. Python farming is well established in Asia but has received little attention from mainstream agricultural scientists. We measured growth rates in two species of large pythons (Malayopython reticulatus and Python bivittatus) in farms in Thailand and Vietnam and conducted feeding experiments to examine production efficiencies.

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Ecotoxicity of the fluoroquinolone antibiotic delafloxacin to the water flea Simocephalus vetulus and its offspring under the influence of calcium modulation.

Sci Total Environ

May 2024

Graduate University of Science and Technology, Vietnam Academy of Science and Technology (VAST), Hanoi City, Viet Nam; Institute of Tropical Biology, Vietnam Academy of Science and Technology (VAST), Ho Chi Minh City, Viet Nam.

Delafloxacin (DFX), one of the latest additions to the fluoroquinolone antibiotics, is gaining heightened recognition in human therapy due to its potential antibacterial efficacy in a wide range of applications. Concerns have arisen regarding its presence in the environment and its potential interactions with multivalent metals, such as calcium (Ca). The present study investigated the trans- and multigenerational effects of environmentally projected concentrations of DFX (100-400 μg DFX L) on individual- and population-level responses of parental S.

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Morphological Changes of 3T3 Cells under Simulated Microgravity.

Cells

February 2024

Animal Biotechnology Department, Institute of Tropical Biology, Vietnam Academy of Science and Technology, Ho Chi Minh City 70000, Vietnam.

Background: Cells are sensitive to changes in gravity, especially the cytoskeletal structures that determine cell morphology. The aim of this study was to assess the effects of simulated microgravity (SMG) on 3T3 cell morphology, as demonstrated by a characterization of the morphology of cells and nuclei, alterations of microfilaments and microtubules, and changes in cycle progression.

Methods: 3T3 cells underwent induced SMG for 72 h with Gravite, while the control group was under 1G.

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A new species of the genus Vietnamophryne is described from Vietnam on the basis of two specimens collected from Tuyen Quang Province, Northeastern Vietnam. The new species is morphologically most similar to Vietnamophryne occidentalis from Thailand, however, it differs from the latter by having large black blotches in the lower jaw region, and a yellow-orange chest and belly. The genetic distance between the new species and other Vietnamophryne taxa is > 2.

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Banana bunchy top virus is a multicomponent circular ssDNA virus (family ) that causes one of the most devastating diseases of cultivated bananas and plantains (family Musaceae). It is transmitted by the aphids and among host plants of Musaceae and some other families of monocots. Our Illumina sequencing reconstruction of virome components of BBTV-infected banana plants and their neighbor non-banana plants sampled in Vietnam and Laos revealed the monocot sp.

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Little is known about the chemical and biological profiles of and . No previous studies have investigated alpha-glucosidase inhibition using extracts from and . In this paper, bioactive-guided isolation procedures were applied to the plants and based on alpha-glucosidase inhibition.

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Antibiotics which once a boon in medicine and saved millions of lives are now facing an ever-growing menace of antibacterial resistance, which desperately needs new antibacterial drugs which are innovative in chemistry and mode of action. For many years, the world has turned to natural plants with antibacterial properties to combat antibiotic resistance. On that basis, we aimed to identify plants with antibacterial and antibiotic potentiating properties.

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Ecological and human health risk assessments of cyanotoxins and heavy metals in a drinking water supply reservoir.

J Water Health

August 2023

Department of Production Systems Engineering, Graduate School of Engineering, Nagasaki University, 1-14 Bunkyo, Nagasaki City, Japan.

Human beings are frequently exposed to a mixture of chemical pollutants through the ingestion of contaminated drinking water. The present study aimed to assess the ecological and human health risks associated with the contamination of cyanotoxins and heavy metals in a drinking water supply reservoir, the Tri An Reservoir (TAR), in Vietnam. Results demonstrated that the concentrations of individual heavy metals varied in the following order: iron (Fe) > lead (Pb) > arsenic (As) > zinc (Zn).

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The Efficacy of Transplanting Human Umbilical Cord Mesenchymal Stem Cell Sheets in the Treatment of Myocardial Infarction in Mice.

Biomedicines

August 2023

Interface Science and Materials Engineering Group, School of Mechanical, Medical and Process Engineering, Faculty of Engineering, Queensland University of Technology, Brisbane City, QLD 4000, Australia.

The transplantation of mesenchymal stem cell (MSC) sheets derived from human umbilical cords (hUCs) was investigated in this study as a potential application in treating myocardial infarction (MI). Two groups of hUC-MSC sheets were formed by populating LunaGel, which are 3D scaffolds of photo-crosslinkable gelatin-based hydrogel with two different cell densities. An MI model was created by ligating the left anterior descending coronary artery of healthy BALB/c mice.

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This study aimed to assess the effects of hexavalent chromium on zebrafish () embryo development. The zebrafish embryos were treated with solutions containing chromium at different concentrations (0.1, 1, 3.

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Context: L. (Fabaceae) is used in the Ayurvedic system to treat various oxidative-related ailments (e.g.

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The present study delved into the enhancement of essential oil (EO) extraction process from Chlorella sp. through the implementation of ultrasound-assisted extraction. The Taguchi method was instrumental in determining the ideal parameters for the extraction process, which encompassed ultrasonic amplitude, reaction duration, hexane/ethanol (HE/EtOH) ratio, and processing temperature.

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Two new genera of freshwater crabs (Potamidae) are recorded from northern Vietnam, Tortomon Huang, Wang & Shih, 2020, and Aiyunamon Pan, Ng & Sun, 2022. These genera had previously only been reported from southern China and eastern Myanmar. Each genus is represented by a new species.

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We describe a new species of Dendrelaphis from the coastal area in southern Vietnam based on morphological data and nucleotide sequences from one partial mitochondrial gene (Cytb). Dendrelaphis binhi sp. nov.

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Ciprofloxacin (CFX) and ofloxacin (OFX) are commonly found as residual contaminants in aquatic environments, posing potential risks to various species. To ensure the safety of aquatic wildlife, it is essential to determine the toxicity of these antibiotics and establish appropriate concentration limits. Additionally, in (eco)toxicological studies, addressing the issue of multiple hypothesis testing through -value adjustments is crucial for robust decision-making.

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is an evergreen citrus plant and has attracted considerable attention due to its bioactive components and biological activities. In the present study, the essential oil (EO) from cultivated in Vietnam was demonstrated to exhibit the in vitro antioxidant, thrombolytic, anti-hemolysis, anti-inflammatory, and antidiabetic activities. Briefly, the gas chromatography coupled to mass spectrometry analysis revealed that the leaf EO of was composed of 33 components, with the main constituents being β-carypphyllene (32.

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Revision of the Genus Dai, Song, He, Cao, Xu & Zhong, 1975 (Crustacea: Decapoda: Brachyura: Potamidae), with Descriptions of Eight New Species from Vietnam.

Zool Stud

May 2023

National Key Laboratory, Institute of Tropical Biology, Vietnamese Academy of Sciences and Technology, 9/621 Hanoi Highway, Thu Duc City, Ho Chi Minh City, Vietnam. E-mail: (Ngo).

The taxonomy of the potamid genus Dai, Song, He, Cao, Xu & Zhong, 1975, is revised. Three species are known from southern China: Dai, Song, He, Cao, Xu & Zhong, 1975 (type species); Huang, Shih & Ahyong, 2020; and Huang, Shih & Ahyong, 2020. Eight new species are here described from northern Vietnam: , , , , , , and .

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Effects of Different Diets on Biological Characteristics of Predatory Mite (Acari: Phytoseiidae).

Insects

June 2023

Plant Quarantine Subdepartment Zone II, Plant Protection Department, Ministry of Agriculture and Rural Development, Ho Chi Minh City 700000, Vietnam.

In this study, we investigated the effects of different diets on the development and reproduction of the predatory mite . The results show that feeding on citrus red mite () led to the fastest life cycle completion (6.9 ± 0.

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Variations in land surface temperatures in small-scale urban areas in Vietnam during Covid-19 restrictions: Case studies from Da Nang, Hue and Vinh City.

Environ Monit Assess

June 2023

Department of Environmental Management and Technology, Institute of Tropical Biology, Vietnam Academy of Science and Technology, 85 Tran Quoc Toan, Ward 7, District 3, Ho Chi Minh City, Vietnam.

Land surface temperature (LST) is an important variable in urban microclimate research. At the end of 2019, the emergence of Covid-19 pandemic has changed the world in a manner that forced many countries to impose restrictions in human activities. As a measure to prevent the expansion of Covid-19 infections, most of the major cities have entered a prolonged lockdown period and reduction in human activities between the early 2020 and the late 2021.

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The current study describes the chemical identification, antimicrobial, and mosquito larvicidal activities of essential oils from and , growing in Vietnam. Essential oils were extracted from the leaves and rhizomes, and characterized by the GC-FID/MS (gas chromatography-flame ionization detection/mass spectrometry) analysis. Monoterpenes (33.

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Nematode's morphometric shifts related to changing environmental conditions in the Mekong estuaries Ba Lai and Ham Luong, Vietnam.

Environ Sci Pollut Res Int

June 2023

Department of Environmental Management and Technology, Institute of Tropical Biology, Vietnam Academy of Science and Technology, 85, Tran Quoc Toan, Dist.3, Ho Chi Minh City, Vietnam.

Damming has been reported to give many short-term benefits for local people but also to result in long-term negative impacts on the aquatic ecosystem. The ecological impact of the Ba Lai dam was studied by investigating environmental differences and the response of associated aquatic nematode communities (structure and morphometric characteristics) in both downstream and upstream sections of its estuary in comparison to an adjacent dam-free estuary Ham Luong, both belonging to the Mekong delta in Vietnam. Depleted dissolved oxygen, elevated methane and sulfide concentrations and increased accumulation of contaminants, including total suspended solid, heavy metals, and nutrients in the dammed estuary and its upstream section, indicated an impact of the dam on the environment.

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Tri An Reservoir is a vital source of water for agriculture, industry, hydropower, and public usage in Southern Vietnam. Due to human activities, water eutrophication has become a serious problem in recent decades. This study investigated for the first time the impact of land use and land cover (LULC) change on streamflow and nitrate load from the upstream Dong Nai River basin, which is the largest watershed of the reservoir.

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We describe a new species of kukri snake from Da Lat City and its vicinity in Lam Dong Province, southern Vietnam on the basis of morphological characters of four specimens, including two males and two females. Oligodon tuani sp. nov.

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A new semiterrestrial crab from limestone hills in Vietnam (Crustacea: Brachyura: Potamidae: Tiwaripotamon).

Zootaxa

November 2022

National Key Laboratory, Institute of Tropical Biology, Vietnamese Academy of Sciences and Technology, 9/621 Hanoi Highway, Thu Duc City, Ho Chi Minh City, Vietnam..

A new species of semiterrestrial crab of the potamid genus Tiwaripotamon Bott, 1970, is described from limestone hills in northern Vietnam. Tiwaripotamon bellum n. sp.

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