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Mosquito monitoring online

Intelligent mosquito counters made in Germany: facing competition from Microsoft?

Scientists all over the world can now track the growth of mosquito populations on their computers. "The BG-Counter is a new kind of mosquito counting machine that allows scientists and health authorities to be proactive against a coming infestation," says Dr Martin Geier of Biogents AG in Regensburg, Germany. The high-tech equipment was developed by the Regensburg mosquito experts in cooperation with a company from Silicon Valley and has been successfully tested since autumn 2015 in the Florida Keys on the southern tip of the Florida peninsula. The counter is now going into serial production. Recently, a demonstration model has come online at Lake Starnberg south of Munich. Since mid-June, it has been possible to track the increase in mosquito populations after the recent floods and even the times at which these insects are particularly active.

Last week, Microsoft announced that it was developing a similar mosquito trapping system, indicating that the demand for such intelligent mosquito traps is great and will continue to grow in the future. Globally, mosquitoes are considered among the creatures most dangerous to humans. Hundreds of thousands of people die each year from mosquito-borne diseases. Biogents AG, headquartered in the Bavarian city of Regensburg, has a prominent position in this promising market. For example, Biogents traps are considered the gold standard for Yellow Fever and Asian tiger mosquitoes around the world. No wonder since they are based on more than twenty years of intensive research and development.

Whether the Microsoft traps will be comparable to those made by Biogents remains to be seen. "Microsoft wants to develop traps into some kind of flying laboratories that are supposed to solve every issue related to mosquito monitoring in one fell swoop. Our experience shows that it's better to establish effective technologies step-by-step and integrate them over time," says Dr Geier. Most importantly: before mosquitoes can be analysed and counted, they first must be attracted and trapped. When it comes to this essential detail, Biogents leads the field. Their particularly efficient traps are used by public health authorities and scientists worldwide. Even the US Centers for Disease Control and Prevention (CDC) recommends using Biogents' BG-Sentinel traps as a monitoring tool in the fight against Asian tiger mosquitoes and Yellow Fever mosquitoes. Both these mosquitoes can also transmit Dengue, the Zika virus, and the Chikungunya viruses and are therefore considered to be particularly dangerous. According to the CDC, BG-Sentinel traps are currently the mosquito traps most commonly used to catch adult tiger mosquitoes.

The field trials of the BG-Counter on the Florida Keys have been very successful. 80-90% of the trapped mosquitoes are correctly identified and counted. "Other mosquito-fighting organisations have indicated their interest in these new counters," says Geier.

Since February, Biogents has joined forces with Irideon SL in Spain and the Technological Educational Institute of Crete to further develop the BG-Counter's sensors. The aim: to distinguish different mosquito species caught in the trap, and to identify those that are especially problematic as potential disease vectors. This project called REMOSIS (Remote Mosquito Situation and Identification System) is being funded by the EU's Horizon 2020 programme. Researchers around the world will then be able to track carriers of disease and invasive species even more accurately than ever before.

More information on the BG-Counter can be found on its web page, .
This is a pdf-file.PDF Press release >>

Mosquito monitoring online

Mosquito monitoring online: first field tests of a novel mosquito trapping system by Biogents

An important aspect of successful mosquito control programs is quality control: What mosquito species are actually present, what are their population dynamics, and how are they actually affected by control measures? Answering these questions is the task of mosquito monitoring. This is done with special mosquito traps, often provided worldwide by Biogents (BG), a highly specialised company from Regensburg, Germany. For important disease vector species, Biogents mosquito traps are widely considered as the gold standard.

On the Florida Keys - a chain of islands at the southern tip of the Florida peninsula - a novel and advanced Biogents trapping system for monitoring mosquitoes is now being tested. Called the BG-Counter, it is based on a Biogents mosquito trap with carbon dioxide as an attractant. The trap is complemented by a sensor module, which was developed together with the American company onVector. This module counts the captured mosquitoes electronically via a patented infrared light barrier, and discriminates mosquitoes from other insects or foreign particles with an accuracy of around 90 percent. At the same time, it continuously measures additional factors that are also needed for the assessment of future population dynamics and risks: Temperature, wind, relative humidity, and, if necessary, other environmental parameters. The collected data are regularly fed into the Internet. They can be accessed via a web-based interface, which can also be used to control the BG-Counter remotely.

To date, each of the 16 technicians of the Florida Keys Control District (FKMCD) spends about two hours per day to monitor the islands' mosquito populations. This is done at a total of 266 locations. The technicians record the number of mosquitoes that land on them within a minute before they proceed to the next locations to repeat the procedure. The data are collected following a regulation of the Florida Department of Agriculture and Consumer Science on mosquito control. The aim: To apply mosquito control measures as early as possible, in order to prevent or at least to mitigate the development and spread of large mosquito populations. The novel BG-Counter traps simplify the data collection, raising the efficacy and reducing the costs. "The freed resources can then be used in a long term and more focused, specific mosquito management," says Dr Martin Geier, Managing Director of Biogents AG in Regensburg, Germany.

The solar-powered BG-Counter is the first commercially available mosquito trapping system that allows for a precise monitoring of mosquito population over wide areas, in real-time, directly from the computer, and with minimum manpower. The real-time transmission of mosquito catch data also helps to identify activity patterns and to better understand population dynamics. The BG-Counter will help to better monitor mosquito populations and manage their breeding grounds. Countermeasures can be initiated earlier, more precisely, and therefore more effectively and with less environmental impact. The real-time data acquisition with BG-Counters also allows for a detailed assessment of how effective control measures are. This is especially important in countries were mosquitoes are also transmit diseases.

Supported by the EU's Horizon 2020 program, the REMOSIS Project (short for Remote Mosquito Situation and Identification System, ) will now develop the BG-Counter even further. The aim is a sensor module which will be capable of distinguishing different mosquito species. This way mosquito species that are particularly dangerous for humans, such as tiger mosquitoes, can be targeted more precisely and more focused than before. (Tiger mosquitoes like the Asian Tiger Mosquito, Aedes albopictus, or its relative, Aedes aegypti, are vectors of yellow fever, dengue, chikungunya, and Zika virus.) Last, not least, the incorporation into the Internet if Things (IoT) will greatly facilitate the joint analysis of a host of data from traps in different contexts, as well as from other devices. This will make mosquito control and the prevention of mosquito borne diseases more specific, environmentally friendlier, and easier to plan.

Mosquitoes are mainly a nuisance in some countries. However, at the global level, mosquitoes top the list of creatures that are dangerous to humans. As carriers of many pathogens, they kill hundreds of thousands of people every year.

More information on the BG-Counter can be found on its web page, .
This is a pdf-file.PDF Press release >>

An improved surveillance tool for scientists: The new BG-Sentinel 2

We are introducing our new BG-Sentinel 2 with many improvements

Biogents is continuously developing its product range and is now happy to announce the release of the improved version of the BG-Sentinel trap in 2015. We have taken into account the requirements of field work and the vast amount of feedback that we have received from our users over the years. The new version of the BG-Sentinel - the BG-Sentinel 2 - now offers many improved features concerning quality and functionality such as:

  • an easy to set-up pop-up design
  • stable and easy to clean cover
  • intake funnel with shutter
  • waterproof connectors
  • a new CO2-nozzle
  • improved BG-Lure
  • and more sturdy and robust materials
Similar to the original version, the new BG-Sentinel 2 is available either as a CO2 version or without CO2 accessories.

Improvements of the new BG-Sentinel 2 in detail:

BG-Sentinel2 Popup Design

Pop-up design
The pop-up design of the trap with a stainless steel wire frame will allow quick set-up without individual, loose parts.

Foto BG-Sentinel 2 cover

Our new plastic cover provides additional stability to the trap and is easier for you to mount and clean. Air is emitted evenly through fine holes in the cover. The new plastic cover is further easier to attach than its fabric precursor. It also contains an opening to insert the BG-Lure cartridge.

Foto BG-Sentinel 2 shutter

Funnel with shutter
The new funnel is equipped with a shutter that closes the funnel automatically and prevents the caught mosquitoes from escaping in case power supply fails for any reason. Also the catch bag removal will be easier and faster: funnel and catch bag together can function as transport and storage unit. The shutter can be fixed for transport with a simple fixing mechanism.

Foto BG-Sentinel 2 fan

A form-fitting ventilator with a rounded profile and a waterproof connector will ensure endurance. The ventilator can be powered by a battery or via a power supply unit and provides the required suction to prevent the escape of captured mosquitoes.

Foto BG-Sentinel 2 connectors

The new connectors are waterproof and screwed shut to ensure a tight connection. The quickconnect compartment allows trap power to be controlled from outside the trap when the battery is stored inside the trap body.

Foto BG-Sentinel 2 nozzle

Optional CO2 gas can be dispensed via the nozzle. The emitted CO2 gas mimics the exhaled breath of a host and serves as an additional attractant. The CO2 nozzle is mounted directly on top of the odor dispenser or in the dispenser recess if no dispenser is used.

Foto BG-Sentinel 2 cartridge

BG-Lure cartridge
The new version of the BG-lure is self contained and fits into an opening in the trap cover. This allows you to easily handle and exchange the dispenser without coming into direct contact with the chemicals.
More information about the new BG-Lure >>

Foto BG-Sentinel 2 contents

The BG-Sentinel 2 is delivered with an intake funnel, funnel net, 2 catch bags, trap cover, inner cylinder with attached ventilator, trap body and battery cable.

An optional power supply unit (EU, US or AU version with 12V output) and the BG-Lure can be purchased separately.

Price is the same as for the original BG-Sentinel basic version. In contrast to the original basic version, the new BG-Sentinel 2 contents include a battery cable.

PDF: Information about the new BG-Sentinel 2 coming in 2015 Information about the new BG-Sentinel 2 as PDF>>

PDF: BG-Sentinel 2 manual BG-Sentinel 2 manual in English

PDF: BG-Sentinel 2 manual BG-Sentinel 2 manual in French

PDF: BG-Sentinel 2 manual BG-Sentinel 2 manual in Spanish

PDF: BG-Sentinel 2 manual BG-Sentinel 2 manual in Italian

Mosquito monitoring in the field

Evaluation of Biogents mosquito traps in Italy: Reduction of Ae. albopictus biting pressure

Since its introduction and establishment in Italy during the early 1990s, the Asian tiger mosquito, Aedes albopictus, has spread over large parts of Italy and other Mediterranean countries. Aedes albopictus is both a nuisance and a competent vector for various arthropod-borne pathogens. Although efficient traps for Ae. albopictus exist and are used for population monitoring, their use as a control tool has not yet been studied.
We evaluated Biogents BG-Sentinel mosquito traps, used with the BG Lure, as control tools in northern Italy. The trial was performed as a controlled experiment in which 3 intervention sites, equipped with 7 or 8 BG-Sentinel traps each, were matched with 3 comparable control sites. Trap density ranged from 1 trap per 150 m2 to 1 per 350 m2. Mosquito populations were monitored at both the intervention and control sites with weekly human landing collections (HLC) and ovitraps. Between 64% and 87% fewer Ae. albopictus individuals were collected by HLC at the intervention sites with the BG-Sentinel mosquito traps, as compared to the untreated control sites. These results indicate that the sustained use and proper placement of efficient mosquito traps can significantly reduce Ae. albopictus biting pressure.

Read more about the results in the publication: Englbrecht, C., Gordon, S., Venturelli, C., Rose, A., and Geier, M. (2015). Evaluation of BG-Sentinel Trap as a Management Tool to Reduce Aedes albopictus Nuisance in an Urban Environment in Italy. Journal of the American Mosquito Control Association 31, 16-25.

This is a pdf-file.Download publication

Mosquito monitoring in the field

1400 households, 450 Biogents traps, uncounted dengue mosquitoes - a long-term study in Brazil

Dengue fever is widely distributed in Brazil and other tropical and subtropical regions and a constant threat to the local population. Dengue is mosquito-borne virus that infects up to 100 million people each year. Because there is no effective vaccine available, the only way to control the disease is by controlling the dengue mosquitoes. While the use of conventional insecticides is widespread, they have become increasingly ineffective due to insecticide resistance. A new approach to control the mosquitoes could be the mosquito trap developed by Biogents. A large-scale study published in the Entomological Society of America's Journal of Medical Entomology has demonstrated for the first time that these traps can also reduce the number of dengue mosquitoes (Aedes aegypti) in a broad urban area. The study co-financed by the world-bank was conducted over 18 months with more than 1400 households and 450 Biogents traps in Manaus, Brazil.
The result: "The study shows that the Biogents traps can significantly reduce the amount of adult female Aedes aegypti especially in the rainy season" says Prof. Eiras from the University Federal de Minas Gerais (Brazil). The number of dengue infections in the test areas also decreased. An additional advantage for household trap users was the Biogents traps also reduced numbers of the annoying and often numerous tropical house mosquito (Culex quinquefasciatus). Households that used the traps reported a noticeable reduction in the nuisance from mosquitoes. Additional studies will be required to investigate the effects of trapping on larger scales and during epidemics.

This is a pdf-file.Download press release
This is a pdf-file.Download publication


The new BG-Lure cartridge with improved emission profile

The new BG-Lure cartridge comes as a plastic cartridge filled with the three components in granular form. Specified openings in each compartment of the cartridge allow a controlled release of the components.
For the same price as the old one, the new BG-Lure cartridge offers following improvements:
  • Easier handling - no contact with the components.
  • Better protection of the odor against enviromental influence - the plastic cover protects the components against washing out and extends the durability.
  • Improved emission profile - a more consistent emission rate provides a more constant attraction of the mosquitoes over time.

This is a pdf-file.More information about the improvements

BG-Sentinel as effective tool to monitor Aedes albopictus and other mosquito species

40 to 50 BGS traps were utilized during an intensive 5-year surveillance as part of an 'Area-wide Management Program for the Asian Tiger Mosquito' in NJ, USA. The results are now published. The authors say that the Biogents Sentinel (BGS) trap is a very effective tool to monitor adult populations of Aedes albopictus and that although BGS traps are becoming the gold standard instrument for Ae. albopictus surveillance, they can also be used to collect other important mosquito species, which can enhance existing vector surveillance programs.
Read more about the results in the publication:
Unlu I., Farajollahi A. (2014) Multiyear Surveillance for Aedes albopictus with Biogents Sentinel Trap Counts for Males and Species Composition of Other Mosquito Species. Journal of the American Mosquito Control Association, 30(2):122-125.

This is a pdf-file. Download this publication

Comparison of 4 traps used for mosquito monitoring and surveillance programs:
The BG-Sentinel trap is probably the best solution

Four different traps, Biogents Sentinel trap (BG trap), Heavy Duty Encephalitis Vector Survey trap (EVS trap), Centres for Disease Control miniature light trap (CDC trap) and Mosquito Magnet Patriot Mosquito trap (MM trap) were compared in a 4×4 latin square study. In the years 2012 and 2013, more than seventy 24-hour trap comparisons were conducted at ten different locations in northern and southern Germany, representing urban, forest and floodplain biotopes.
Conclusion: The autors say that the BG trap showed a significantly better or similar performance compared to the CDC, EVS or MM trap with regard to trapping efficacy for most common mosquito species in Germany, including diversity of mosquito species and number of mosquitoes per trapping period. Thus, they say, the BG trap is probably the best solution for general monitoring or surveillance programs of adult mosquitoes in Central Europe.
Read more about the results in the publication:
Lühken et al. (2014) Field evaluation of four widely used mosquito traps in Central Europe.Parasites & Vectors 2014, 7:268

This is a pdf-file.Download the publication

Where to purchase?

The new BG-Sentinel 2 as well as the original version can be ordered by contacting our customer support by email ( or fax (+49 941 569 921 68).

You can also consult our
list of distributors.


Infos on Biogents

Biogents Logo

This is a link to an external site Who is Biogents?

This is a link to an external siteBiogents also develops and produces mosquito traps for the end consumer market.

This is a link to an external site. Biogents performs contract R&D for producers of mosquito repellents and related products.

This is a link to an external site. Go to Biogents Webpage



What else could be interesting?

open access symbol
List of open access journals for the medical entomologist.

This is a pdf-file.Our online-database with publications on studies using the BG-Sentinel.

Publication with the BGS2:
Trap comparison with the BGS2:
The BGS2 trap collected more DENV and CHIKV vectors  than compared traps.
Read more in the publication of Harwood et al., 2015

An improved surveillance tool for scientists: The new BG-Sentinel 2 in the field

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