Conspecific and heterospecific information use in bumblebees

Area of Science:

• Behavioral Ecology
• Animal Cognition
• Interspecific Interactions

Background:

• Social learning, or learning from others, is crucial for animal survival and adaptation.
• Most research focuses on conspecific (same species) learning, leaving heterospecific (different species) learning understudied.
• Understanding how animals utilize information from different species is key to understanding ecological interactions.

Purpose of the Study:

• To investigate if bumblebees learn equally from conspecifics and heterospecifics.
• To determine if social information readily crosses species boundaries in pollinators.
• To assess the role of associative learning in utilizing interspecific cues.

Main Methods:

• Bumblebees (Bombus terrestris) were trained to associate floral cues with rewards using demonstrators of their own species and honey bees (Apis mellifera).
• Observer bees' choices were tracked to measure the effectiveness of conspecific versus heterospecific demonstrators.
• Transfer tests with novel flower types were conducted to assess the generalizability of learned information.

Main Results:

• Heterospecific demonstrators were as effective as conspecifics in guiding bumblebee choices for known resources.
• Inorganic visual cues were less effective than conspecific cues.
• Naïve bumblebees, with no prior social foraging experience, learned equally well from conspecific and heterospecific demonstrators.

Conclusions:

• Social learning is not limited to conspecifics; animals can effectively learn from other species.
• Interspecific social information can be as valuable as conspecific information through associative learning.
• Findings have implications for understanding competition and cooperation in natural pollinator communities.