Actually both of them is the best methods to collect the mosquito's egg from nature, but depend on the case you want. If you want to trap the Aedes only the best way by using the Gravid Aedes Trap (GAT), Good luck for your experiment Mr. Baig
I found the cut bamboo pieces half filled with water, with one or two leaves, is a good trap.It may be hanged in bushes .
Get old vehicle tyres and put some water half full. The eades will lay eggs in this water.
Any of the traps is but my experience with the tyres is the best and more simple as suggested by Taratisio
Aedes aegypti dont lay eggs on water but on the surface from where water has evaporated. she glued eggs singlyon
Will Dr. M. Aslam is right but eggs are laid on the sides of tryes just above the water level. They hatch after the water level reaches it. One can also collect these eggs by putting a piece of wood in slanting position in the tyre and may collect this piece of wood for Aedes eggs.
In tree stump with some growing plants or weeds is a good place for aedes aegypt.
BG sentinel with carbon dioxide or yeast as an attract or use of oviposition paper for the adult to lay eggs
I've never worked with these traps, but if you want to collect adult mosquitoes, you can use trap type aspiration, BG sentinel, Stick trap. If you want to collect eggs, you can use ovitraps
What are your objectives? Broad surveillance? Collection of large numbers for lab experiments? Blooded adults? Host seeking adults? Successfully bloodfed females? Every trap provides a slightly different snapshot of the mosquito population.
Ok, then maybe a sticky ovitrap will give you a better sample of the females that have been able to get a blood meal and are now ready to lay eggs. Aedes aegypti do not lay all the eggs in the same container so you wont necessarily get an exact sample of the eggs but by combining numbers of eggs - if you give them access to a surface above the water - and the number of retained eggs in the females stuck to the sticky surfaces you might get an idea of numbers and relative fitness of blooded females.
I must add that I was under the impression that a "Mosquitrap" was a small BGS trap - it turns out that is the "Mosquitaire". So both Mosquitrap and the GAT are sticky ovitraps. I am attaching an ms that compares them, to some extent. I guess the message is that its best to not use trade-names or explain them before asking a question. Cheers.
Ah. Sorry for the confusion. Thank you. Are the GAT commercially available?
Farrukh Baig I know the answer is late, however, I still believe that this will be a good contribution for further discussion. Both traps are good for monitoring Aedes aegypti populations and the choice will be related to your objective.
The MosquiTRAP is used in a large scale surveillance program in Brazil named MI-Aedes by Ecovec company (which has been recently acquired by Rentokil Initial) which covers more than 80 cities where more than 5 million people live. The reasons for using MosquiTRAP and not GAT are related to cost-benefit of the tool, lower price, easiness of operation when compared to GAT, lower water volume needed (which in cities that have hydric stress is a factor to consider) and the need for monitoring city-wide areas. In regards to the GAT, it is commercially available through Biogents website, however, buying just one for installing in your home will not be enough to reduce mosquito populations. Adittionally, its use in large-scale surveillance programs has never been tested.
Another point to focus is that GAT is a trap for capturing adult mosquitoes, whereas MosquiTRAP can work as a adult mosquito catcher, larvae catcher and egg catcher (data not published).
Wow! Its been a while since I read the answers on this link. I have since become VERY familiar with the GATs as I have worked with almost 2,000 of them - Biogents sells them and they have a version with sticky paper (we used them in 2017 using canola oil as an insecticide). See - https://www.nature.com/articles/s41598-018-34161-9. I have not made direct comparisons between GAT and mosquiTRAP but for us in the northeastern US where summers are rainy and very humid it is important to use a trap with enough water to outcompete other water holding containers around - we educate homeowners to remove all containers but that is very hard to do perfectly. Since the cost (approx. $15-$19) is paid by the homeowners it is also important that it not be too low otherwise they will forget about the trap allowing it to become not a sink but a source. The GATs need to be checked and cleaned at least once a month. Seeing the dead mosquitoes also acts as an incentive.
Congratulations Dina for your excellent initiative! I've read your paper a few months ago, and felt that this should be applied in other communities as well. The hard part would be to convince the population to adopt mosquito traps as a control measure. Field experience let us to see homeowners always blaming the neighbors for the mosquito problem, when the real guilty were themselves. If you can convince them on their duty to take care of the trap, it will be an excellent measure, for sure.
MosquiTRAPs do not have the potential to act as control traps by themselves, but are ideal for surveillance. The problem with competition with other containers is still an issue. For this reason, we use a commercial lure for oviposition for enhancing sensitivity.
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