Bumblebees, also known as bombuses, play a crucial role in our ecosystem. They are not only important pollinators of crops and wild plants, but also contribute to the biodiversity of flora and fauna. Unfortunately, like many insects, bumblebees face a variety of threats, including diseases.

Parasites and Pathogens

Bumblebees are affected by a range of parasites and pathogens, including fungi, bacteria, viruses, and parasitic mites. A common parasite is Nosema bombi, a microsporidia that infects the intestinal cells of bumblebees, leading to reduced nutritional efficiency and reproductive problems. In addition, there are viruses such as the Artificial Wing Virus (DWV), which is often transmitted by the parasitic mite Varroa destructor.

Image of Annette Meyer via Pixabay

Pesticide use

Exposure to pesticides, especially neonicotinoids, has a negative impact on bumblebee health. These chemicals weaken the immune system of bumblebees, making them more susceptible to disease. In addition, sublethal doses of pesticides can lead to behavioral changes, such as reduced navigation skills, which reduces the efficiency of food quests and increases stress.

Loss of habitat and food resources

The loss of natural habitats due to urban development and intensive agriculture has led to a decline in flowering plants that bumblebees need for nectar and pollen. A restricted diet weakens their immune system and makes them more susceptible to disease. Monocultures contribute to this problem because they often do not provide the diverse nutrients that bumblebees need.

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