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The City Council redoubled its efforts in the fight against the tiger mosquito (27/09/2019)

This next morning an important fumigation will take place in the green areas and the early Monday morning in the Industrial Park

The City of Alhama de Murcia is developing an intense campaign of control of the different species of mosquito that reproduce in our municipality.

These actions begin with the arrival of the first heats towards the end of April or beginning of May and conclude at the end of October or beginning of November when the average temperatures are below the optimum for the reproduction of this group of insects.

In addition, due to the special health interest that the presence of the tiger mosquito has for our population, this Consistory is attached to the Regional Tiger Mosquito Surveillance System (SRVMT).

Our municipality has four sampling points to which periodically staff of this City Council is directed to study the presence of this species and the evolution of its population.

This is a job in which we collaborate weekly with the Ministry of Health and the University of Murcia.

Therefore, interventions in the field of control of tiger mosquitoes, but also of other mosquito species, are being carried out from April 16, 2019 and are scheduled to extend until November 26 of this year.

What has the City Council done to date on mosquito control?

What do you plan to do in the near future?

1. Preventive work.

These are works aimed at preventing the reproduction of the different species of mosquito in the places of water pools that cannot be emptied or that are filled periodically.

In this way, since April we treat the 61 scuppers weekly (street grilles) where there is permanently water or it could accumulate.

The City Council has a worker for this task.

We treat rainwater collection reservoirs, as well as all ornamental fountains and other areas with water accumulation.

Likewise, the Parks and Gardens area reduces the amounts of water contributed to some gardens to avoid flooding and possible egg laying.

In general, ecological treatments of the larvicidal type have been applied.

Finally, since May, all measures that individuals have to take to prevent the reproduction of mosquitoes in their homes, plots or workplaces are being disclosed in all local media.

It should be taken into account that around 85% of mosquito production areas are privately owned.

2. Palliative works.

After the few episodes of rains that occur in our area, various adulticidal treatments have been carried out in green areas, playgrounds and other open spaces such as sports facilities.

It was held in May, after the last rains prior to the arrival of summer and is now being carried out after the DANA passed through the Region of Murcia during September 12 and 13.

In fact, treatments have been executed in the new accumulations of water produced from those dates in public roads of the urban area and the Industrial Park.

In addition to these actions, the following palliative actions have been programmed:


Saturday September 28.

Between 3:00 and 7:00 hours (Saturday morning) all the green areas of the urban area will be fumigated.

That is why the population is requested to refrain from traveling through them at that time interval.


Monday, September 30.

Between 3:00 and 6:00 hours (early Monday morning) all the vials and green areas of the Alhama Industrial Park will be fumigated.

It has also been communicated to all owners of ships and plots that refrain from transit through the area at that time interval.


Week from September 30 to October 6.

On the day still to be specified, all the open spaces of the Alhama teaching centers will be treated.

It will be announced in due course.

3. Actions with other entities.

Since the points of accumulation of water and, with them, those of possible mosquito reproduction coincide with spaces managed by other entities, at the beginning of the campaign, the owners were required the urgent preventive intervention with biological treatments or with the elimination of pooling points.

Such is the case of the Alhama Irrigation Community, the different agricultural transformation societies that use pipes, ditches, splitters, siphons and other water distribution systems, and even the Cemetery.

All of them have been sent the appropriate writings indicating their obligations and giving recommendations on means to be used and periods of intervention.

In addition, they have been reminded of these obligations and recommendations after the rains in September.

4. Disclosure actions.

Since May, all measures that individuals have to take to prevent the reproduction of mosquitoes in their homes, plots or workplaces are being disseminated in all local media.

Also self-protection actions to reduce the chances of bites.

5. Recommendations to the population.

These are the ones that by different means and throughout the summer are spreading:


a) Container capping.

Cover all containers (buckets, basins, planters, vases, ashtrays, wheels, toys, etc.) that have accumulated water and are needed for later use.

b) Emptying of accumulation points.

Empty any container of any kind that has accumulated water and cannot be covered, paying special attention to the dishes under the pots.

Do not forget also the plastics sometimes accumulated in patios or plots, which can retain enough water between their folds to favor the mosquito's biological cycle.

c) Water renovation in drinking fountains.

Change the water in the beverage containers for pets every 24 hours.

d) Roof review.

Eliminate retained water in drainage or drainage channels, such as those that exist on rooftops, terraces or balconies.

e) Emptying or treating swimming pools Empty inflatable plastic swimming pools if they are not going to be used.

If so, treat its waters periodically to avoid the deposition or hatching of mosquito eggs.

f) Ponding in agricultural farms.

On rustic farms, avoid water accumulations on terraces, pipes, ditches, siphons, splitters and other irrigation structures.

In the event that these accumulations occur, their waters should be treated to avoid the appearance of adult insects as explained below.

g) Sealing holes in logs.

Also in rustic farms you have to cover holes in trunks and tree branches that could accumulate water.

This can be done with dirt or sand.

h) Larvicidal treatments.

In areas where there is no choice but to accumulate water (reservoirs, rafts, balsons, siphons, deposits, etc.) protective nets must be installed that prevent mosquitoes from accessing or performing periodic larvicidal treatments.

For this, the most effective is to use biological means by inoculating Bacillus thuringiensis.

As in any product, there are several trademarks that supply it, basically in two formats, liquid or solid, in the latter case normally in granules.

Since the continued use of the same insecticide ends up causing resistance in the mosquito that we try to control, it is advised to alternate it with Bacillus sphaericus.


i) Clothing.

To all these indications we must add the self-protection measures that we all must adopt, such as wearing clothes that cover the whole body, that is not tight (the mosquitoes can get through it) and that has a certain thickness in the fabric.

j) Repellents.

It is also recommended to use mosquito repellents in the hours of greatest exposure, especially at late afternoon.

If the presence of a tiger mosquito is detected, these protectors must be specific for this species, otherwise they will not be effective.

In this case, it should be borne in mind that these products cannot be used with children under two years of age and that, according to the active principles they contain, it should be done with caution in those under 14, avoiding especially their application in hands, mouth and mucous

k) Strengthen treatments.

The duration of effectiveness of these products is conditioned by several factors: sweating, washing, application of other products, etc.

Therefore, it should be borne in mind that during the hours of greatest exposure to the risk of stinging, reinforcement applications should be made in the intermediate periods to which the manufacturer advises.

Source: Ayuntamiento de Alhama de Murcia

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