Understanding the relations between Solanaceae crops and their pollinators: a global meta-network

Area of Science:

• Ecology
• Agricultural Science
• Conservation Biology

Background:

• Crop-pollinator interactions are crucial for global food security, with animal pollination significantly enhancing the production of Solanaceae crops, the third-highest-ranked family by economic value.
• A network approach to studying crop pollination aids in identifying key pollinators for conservation and management, as well as highlighting existing knowledge gaps.

Approach:

• This study integrated global data on Solanaceae crop pollination, employing a meta-network approach to analyze interaction patterns.
• A systematic review of scientific databases provided the data, with network structure analyzed using connectivity and modularity, and species roles determined by centrality metrics.

Key Points:

• The analysis included 251 pollinator species, predominantly Hymenoptera, with generalist species like Bombus and Apis being most common.
• The meta-network exhibited modularity, primarily composed of bees, and revealed that while Apis mellifera was the sole network hub, many native species play significant structural roles.
• Most species were found to be peripherals, with a small percentage acting as connectors and no module hubs identified besides the supergeneralist Apis mellifera.

Conclusions:

• The most impactful pollinators are often the most managed species; however, native pollinators are vital for the meta-network's structure.
• Significant knowledge gaps exist regarding pollinators crucial for pepper pollination, species-specific identification, and the pollination efficiency of native bees.