Individual study: Captive-rearing of the neotropical bumblebee Bombus atratus colonies in Cundinamarca, Colombia: no new males or queens produced
Almanza M.T. (2007) Management of Bombus atratus bumblebees to pollinate Lulo (Solanum quitoense), a native fruit from the Andes of Colombia. ZEF Bonn
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Rear declining bumblebees in captivity
Almanza (2007) reported rearing four colonies of the Neotropical pocket-making species B. atratus from wild-caught queens in Colombia. Kept alone under standard rearing conditions, the queens began egg-laying within one week. The colonies lasted between 97 and 183 days, and produced between 40 and 145 workers, but none produced any new queens or males.