Bioactivity of seagrass against the dengue fever mosquito Aedes aegypti larvae

Ali, M. Syed; Ravikumar, S.; Beula, J Margaret

doi:10.1016/s2221-1691(12)60099-9

Cited by 42 publications

(16 citation statements)

References 27 publications

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“…This is assumed to be either due to a lack of knowledge or because people do not use these services in the region. However, casuarina forest, coral reefs or sea grass, for example, are actually known to provide substances that can be used for medical purpose (Ali et al, 2012;Birkeland, 1997;Whistler and Elevitch, 2006). Also the service "energy" provided for example by rivers was not mentioned here, most likely because rivers in the region are not used to gain hydropower.…”

Section: Discussionmentioning

confidence: 99%

Mapping tsunami impacts on land cover and related ecosystem service supply in Phang Nga, Thailand

Kaiser

Burkhard

Römer

et al. 2013

Nat. Hazards Earth Syst. Sci.

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Abstract. The 2004 Indian Ocean tsunami caused damages to coastal ecosystems and thus affected the livelihoods of the coastal communities who depend on services provided by these ecosystems. The paper presents a case study on evaluating and mapping the spatial and temporal impacts of the tsunami on land use and land cover (LULC) and related ecosystem service supply in the Phang Nga province, Thailand. The method includes local stakeholder interviews, field investigations, remote-sensing techniques, and GIS. Results provide an ecosystem services matrix with capacity scores for 18 LULC classes and 17 ecosystem functions and services as well as pre-/post-tsunami and recovery maps indicating changes in the ecosystem service supply capacities in the study area. Local stakeholder interviews revealed that mangroves, casuarina forest, mixed beach forest, coral reefs, tidal inlets, as well as wetlands (peat swamp forest) have the highest capacity to supply ecosystem services, while e.g. plantations have a lower capacity. The remote-sensing based damage and recovery analysis showed a loss of the ecosystem service supply capacities in almost all LULC classes for most of the services due to the tsunami. A fast recovery of LULC and related ecosystem service supply capacities within one year could be observed for e.g. beaches, while mangroves or casuarina forest needed several years to recover. Applying multi-temporal mapping the spatial variations of recovery could be visualised. While some patches of coastal forest were fully recovered after 3 yr, other patches were still affected and thus had a reduced capacity to supply ecosystem services. The ecosystem services maps can be used to quantify ecological values and their spatial distribution in the framework of a tsunami risk assessment. Beyond that they are considered to be a useful tool for spatial analysis in coastal risk management in Phang Nga.

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Section: Discussionmentioning

confidence: 99%

Mapping tsunami impacts on land cover and related ecosystem service supply in Phang Nga, Thailand

Kaiser

Burkhard

Römer

et al. 2013

Nat. Hazards Earth Syst. Sci.

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“…Based on the results of the control test, extract of S. isoetifolium possessed maximum larvicidal activity towards Aedes aegypti (Ae. aegypti) [54] . Seaweed ( Sargassum wightii ) extract and Bacillus thuringiensis var.…”

Section: Insecticidal Natural Products Originated From Marine Plantsmentioning

confidence: 99%

Marine Natural Products: The Important Resource of Biological Insecticide

Song

Yang

Zhang

et al. 2021

Chemistry & Biodiversity

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Due to the unique environmental conditions and vast territory, marine habitat breeds more abundant biological resources than terrestrial environment. Massive marine biological species provide valuable resources for obtaining a large number of natural products with diverse structure and excellent activity. In recent years, new breakthroughs have been made in the application of marine natural products in drug development. In addition, the use of marine natural products to develop insecticides and other pesticide products has also been widely concerned. Targeting marine plants, animals, and microorganisms, we have collected information on marine natural products with insecticidal activity for nearly decade, including alkaloids, terpenes, flavonoids and phenols fatty acids, peptides, and proteins, et al. In addition, some active crude extracts are also included. This review describes the insecticidal activities of marine natural products and their broad applications for future research in agriculture and health.

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“…H. beccarii being small in size compared to other seagrasses like Enhalus acoroides and Syringodium isoetifolium and their presence in muddy habitats restricts access for use in local cultures (Newmaster et al, 2011). Secondly, the nutritional value of H. beccarii leaves (29.16 K cal g -1 ) are low with high tannin and phenol content that makes it non-edible without cooking (Pradheeba et al, 2011).However, this plant has immense potential in providing various bioactive compounds, which have been identified recently, with bioactive compounds as antidiabetic (Vani et al, 2018), anti-dengue fever treatment (Ali et al, 2012), antioxidants (Neelima et al, 2015;Kar et al, 2019) and against various human pathogens (Kavitha et al, 2020). Seagrasses like T. hemprichii that are also found associated with mangroves (Mishra and Apte, 2020a) have been found to be a good source of bioactive compounds (Mishra and Mohanraju, 2018).…”

Section: Biochemical Property and Bioactive Compoundsmentioning

confidence: 99%

The Current Status of <em>Halophila beccarii</em>: An Ecologically Significant, Yet Vulnerable Seagrass of India

Mishra

Apte

2020

Preprint

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We reviewed the current status of a Vulnerable seagrass, Halophila beccarii from the coast of India using the published data from 1977-2020. We found that the seagrass, H. beccarii has a pan India distribution on both east and west coast. It is abundant in the intertidal silty-muddy region on the west coast, while on the east coast it is found on sandy habitats, with few exceptions of muddy habitat. H. beccarii was found to be associated with mangroves or smaller seagrass species within a depth limit of 1.7m. Low salinity and high nitrate levels were observed for the H. beccarii meadows of the west coast due to its association with mangroves. The nutrient levels in H. beccarii meadows of India were comparatively lower than other seagrass meadows. Most of the research on H. beccarii has focoused on its morphometrics (41%), reproductive (33%) and distribution (29%) along the coast of India. Reproductive traits such as flowering and fruiting varying according to the seasons of each coast due to the influence of monsoon and its associated temperature, salinity and nutrient influx. H. beccarii has a great potential of various bioactive compounds, which needs further investigation. Habitat disturbance, anthropogenic pollution and coastal development are the major cause of declining H. beccarii ecosystems in India. Significant loss of the seagrass was observed from the west coast of India due to increased coastal development activities. There is a significant need in quantifying H. beccarii population trends, impact of climate and anthropogenic stressors, economic values of ecosystem services and the role of ecological connectivity for better conservation and management of H. beccarii seascapes across India. There is a need for integration of research outcomes in policy framing for preventing the decline and further loss of this vulnerable seagrass ecosystem.

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Bioactivity of seagrass against the dengue fever mosquito Aedes aegypti larvae

Cited by 42 publications

References 27 publications

Mapping tsunami impacts on land cover and related ecosystem service supply in Phang Nga, Thailand

Mapping tsunami impacts on land cover and related ecosystem service supply in Phang Nga, Thailand

Marine Natural Products: The Important Resource of Biological Insecticide

The Current Status of <em>Halophila beccarii</em>: An Ecologically Significant, Yet Vulnerable Seagrass of India

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