Biofactory of Ladybugs


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Status

ongoing

Icons use case study city info

City

Belo Horizonte

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Main actors

City Government

Icons use case study project area

Project area

Whole City/Administrative Region

Icons use case study duration

Duration

Ongoing since 2018

The Biofactory project is primarily designed to enhance the regulation of undesired organism populations within urban vegetable gardens and trees, utilizing biological control mechanisms via predatory insects. It introduces ladybugs and lacewings, insects that flourish in urban landscapes given adequate prey and alternative food supply. The project is dedicated to promoting specific urban pest management programs. It encourages the release of these beneficial insects, thereby conserving biodiversity and bolstering human health via the establishment of balanced, sustainable ecosystems.
 
This project comprises three main strategies. The first involves the distribution of larvae, including those of ladybugs and Chrysopidae, to suitable environments like vegetable gardens and green spaces. It also provides these larvae to residents possessing backyards or small spaces abundant with plants. In comparison to their mature counterparts, these young organisms are more efficient at pest control and are usually dispersed in plastic containers. The second strategy consists of distributing seed kits for plants that naturally attract predators. Examples of these plants include fennel, coriander, and sunflower. This approach aids in preserving local wildlife. The project's final element includes an environmental education component, primarily aimed at delivering knowledge and training for urban farmers, students and interested citizens on identification and management of natural pests.
 
This case study is from the CLEARING HOUSE project, funded from the European Union’s Horizon 2020 Research and Innovation Program under Grant Agreement 821242.
 

Sustainable Development Goals

Ensure healthy lives and promote well-being for all at all ages
Ensure inclusive and equitable quality education and promote lifelong learning opportunities for all
Make cities and human settlements inclusive, safe, resilient and sustainable
Take urgent action to combat climate change and its impacts
Protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss
Promote peaceful and inclusive societies for sustainable development, provide access to justice for all and build effective, accountable and inclusive institutions at all levels
City
Belo Horizonte, Brazil

Size and population development
Belo Horizonte is the sixth largest city in Brazil. According to the 2010 census conducted by IBGE (Brazilian Institute of Geography and Statistics), there were 2,258,096 people residing in the city. The Greater Belo Horizonte Region is the 3rd most populous of Brazil after Greater Sao Paulo and Greater Rio de Janeiro. The city covers a total area of 330.9 km2, while the metropolitan region expands out to 5,156.21 km2with 5,156,217 million residents. Portuguese in the official language of the city. The 2020 IBGE census has been postponed until July 2021 due to the COVID-19 pandemic, however the IBGE 2019 population estimate for Belo Horizonte was 2,512,070 people.

Population composition
The 2010 census data recorded the population of Belo Horizonte was 53.1% female and 46.9 male. The ethnicity breakdown recorded 46.7% White people, 41.9% Pardo (Multiracial) people, 10.2% Black people, 1.1% Asian people and 0.1% Amerindian people. Belo Horizonte has a notable population of Italian origin, approximately 30% and people of German, Spanish and Syrian-Lebanese ancestries also are sizeable groups. Census data collected on religion showed 59.87% of the population identified as Catholic, 25.06% as Protestant, 8.02% as no religion, and 4.07% as Spiritist.

Main functions
Belo Horizonte is the capital city of the state of Minas Gerais, Brazils second most populous state. The city lies on the western slope of the Espinhaco Mountains, at an elevation of 830 metres and occupies a wide plateau encircled by the Curral del Rey Mountains. Belo Horizonte was one of the first planned cities in Brazil and was designed in a grid pattern with a focus on orderly growth and development. The planning of the city, with street blocks inspired by Paris and architecturally by New York, started in the late 19th century and it was officially founded on December 12, 1897.

Main industries / business
The service sector plays a very important role in the economy of Belo Horizonte, being responsible for 80% of the city's Gross Domestic Product (GDP). The city has a developed industrial sector, being traditionally a hub of the Brazilian siderurgical and metallurgical industries, as the state of Minas Gerais is very rich in minerals, particularly iron ore. The city’s older established industries include publishing, textiles, furniture, auto parts and food processing. More recently a large number of small enterprises in the technological sector, particularly in the fields of computing and biotechnology have emerged.

Administrative structure
Belo Horizonte is governed by a mayor and vice mayor with the assistance of secretaries who head administrative departments. Since 1984 the mayor has been popularly elected to a four-year term. The Metropolitan Region of Belo Horizonte comprises 34 municipalities.

The establishment of the Biofactory was driven by the need to regulate the population of whiteflies, specifically Singhiella simplex (Hemiptera: Aleyrodidae). These pests predominantly infest Ficus macrocarpa trees in areas where these trees line the streets and have been declared as Cultural Heritage by the Municipality of Belo Horizonte. Furthermore, the Biofactory was structured to accommodate the needs for insect management in urban agricultural initiatives, including community gardens and backyards that cultivate food. By controlling and regulating the population of undesired insects, the Biofactory boosts the variety of biological control agents, thereby augmenting the overall effectiveness of pest control.

The Biofactory features a 40 m2 climate-controlled laboratory, outfitted with plastic pots for breeding and acrylic containers for distribution. The lab also includes surgical tweezers, hydrophilic cotton, fine brushes, Parafilm®, masking tape, a refrigerator, a freezer, a stereoscopic magnifying glass, shelves, and plants hosting kuheniella (Zeller, 1879). Additionally, bee honey, brewer's yeast, and other insects, which serve as food, are kept in the lab. In the first half of 2019, after mastering techniques for insect reproduction and maintenance, initiatives to increase these insect populations for release in project-specific areas were initiated.
 
The production process for ladybugs is as follows:
 
Collections are conducted in the green areas of Belo Horizonte.
The insects are then transported to the Biofactory.
Within the lab, insects are bred under controlled dietary and temperature conditions.
These insects are provided with food and conditions conducive for mating.
The eggs and larvae are cared for until they complete their lifecycle and reach adulthood.
 

The Environment Secretariat has allocated financial resources in its budget for the upkeep of the Biofactory, a facility under the jurisdiction of Belo Horizonte City Hall. An initial investment of around $10,000 was used to revamp the facility, while the most significant annual expenditure is the salary disbursement for three biologists and two interns. Given the initiative's success, the Municipality aims to set up eight more units in the forthcoming years, as the promising results warrant additional investments.

Mastering insect reproduction and maintenance techniques in the first half of 2019, the project started ramping up the population of these beneficial insects for release in designated areas. This release of natural predators commenced in April 2019, and early 2022, the distribution was well underway. The project is currently in its expansion phase, aiming to distribute an annual count of 50,000 such insects. Alongside insect release, the project also holds environmental education programs that tackle not just biological control but also wider sustainability issues in urban settings. To date, these educational activities have engaged approximately 3,000 participants.

There are multiple challenges and obstacles related to both infrastructure and ladybug production. From an infrastructure standpoint, issues like water seepage into the Bio factory’s facilities can jeopardize ladybug production, which requires a temperature-controlled setting. Also, insufficient space can impede environmental education activities for both children and adults. Concerning ladybug production and breeding, difficulties include maintaining the breeding stock amidst high demand, sourcing food for ladybugs (like procuring Anagasta kuehniella eggs as an alternative food source for environmental compensation) and managing the insects' life cycle.

The mass production of ladybugs and lacewings does not require sophisticated techniques or substantial investments, making their distribution accessible to various societal groups.

These groups include individuals growing food, as well as residents who maintain vegetable gardens, orchards, or home gardens. This ease of replication makes it feasible for the project to be adopted by not just small-scale farmers but also other public and private organizations, along with research and educational institutions.

 
 
 
 
 

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Bernardo Ribeiro
Belo Horizonte, Brazil

Bernardo Ribeiro

Individual | Director of International Relations

Jakki Mann
Melbourne , Australia

Jakki Mann

Individual | Content Curator

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