Pollinators are vital for agriculture and food security as they contribute to over 75% of food crops and flowering plants but these small insects face numerous threats including pesticides, pollution, climate change, and habitat loss which exacerbates these challenges.
Importance of Diverse Pollinator Habitats
Diverse habitats with ample flowers can reduce disease spread among pollinators. When pollinators share habitats, they risk transmitting pathogens. A study in Switzerland revealed elevated pathogen levels in wild bees sharing flowers with managed honey bees.
Pathogen Spillover and Spillback
Pathogen spillover occurs when diseases transfer from managed to wild pollinators. This can lead to increased virus prevalence in wild species. Managed honey bees can carry viruses that infect wild populations, worsening their health. Research indicates that this phenomenon is important in regions with overlapping habitats.
Bees in India
India hosts over 700 bee species, including four native honey bees. Western honey bees were introduced in 1983 to enhance honey production. A important virus outbreak in the early 1990s devastated Asiatic honey bee colonies. The Thai sacbrood virus, which emerged again in 2021, poses a severe threat to these bees.
Impact of Managed Honey Bee Migration
Managed honey bees frequently migrate across India, which aims to access better floral resources. However, it can disrupt local bee populations. Increased competition and disease spread have been observed. In Kolhapur, the arrival of western honey bees led to local population declines and reduced honey production.
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