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Last Updated : 2024-04-23 22:35:00
It is absolutely commendable that the Entomology Unit of the Medical Research Institute (MRI) has been able to introduce a new larva for tackling the spread of dengue after having gone through a lot of hard work and research procedures. The Medical Research Institute is the premier centre in the country for bio-medical and applied health research. MRI conducts research in diverse areas in the fields of Virology, Bacteriology, Parasitlogy, Rabies, Nutrition, Biochemistry, Histo-Pathology, Hematology, Immunology, Entomology, Molecular Biology, Pharmacology, Mycology, Health Informatics and Animal Studies. MRI is also a major service provider for all hospitals in Sri Lanka with special and specific analytic laboratory tests.
We are delighted to mention that the newly introduced larva called Toxorhynchites splendens is the end result of the dedication, hard work and research conducted with the head of Dr. Sagarika Samarasinghe. She told Daily Mirror that the newly introduced larva was identified in 1911 in the world and used by the different countries to control the spread of dengue with different success
Dr. Samarasinghe said, “The group headed by me started the establishing of Toxorhynchites splendens colony in 2016. This is a tough research and therefore we can’t do it overnight. We have released these larvae to the environment several times without publishing about it. We further expect to make measures to get these larvae adapted to the urban areas.”
Toxorhynchites splendens is around 19mm long and Bluish-white metallic colour with a lifespan of 3 months. They mainly suck honey and plant juice. These larvae do not suck blood as their Proboscis has bent 90. backwards. Therefore, no harm would cause to the humans. Their larva stage lasts for 5 weeks and this may exceed in cold climates.
These larvae who are in the 4th stage can consume 350-400 dengue larvae during their larvae stage and those who are in the stages of 1, 2 and 3 can consume more than 100. These species are much bigger than the ordinary mosquitoes and they are also called “elephant mosquito”, or “mosquito eater”. It is crucial to mention that these larvae are not herbivorous but carnivorous. These mosquitoes lay their eggs when they fly. Hence, they can lay their eggs in places where we can’t reach and they can consume dengue larvae in the hidden places.” She said.
In conclusion, Dr. Samarasinghe categorically emphasized not to depend on this method alone as it would not be sufficient to wholly eliminate the dengue killer. Besides, she invited the general public to render their aid in every possible occasion so that this will not be a challenge to put an end to this issue.
Bugs Bunny Monday, 03 July 2017 07:03 AM
So they are carnivorous. What will they feed on once their dengue mosquito larvae have been fully consumed? Will they go on strike?
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