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4Beekeeping in Northern Climates <br />)LJXUH7KHORFDWLRQRIWKHEURRGKRQH\DQGSROOHQLQVLGHRIDKRQH\EHHFRORQ\ JUDSKLFE\$QQH7XUQKDP  <br />Castes <br />A very advanced degree of social behavior is exhibited by honey bee colonies. They have a distinct caste <br />V\VWHPEHWZHHQTXHHQVDQGZRUNHUVDVZHOODVDGLYLVLRQRIODERUZLWKLQWKHZRUNHUFDVWH7KHUHDUHWZR <br />FRPSOHPHQWDU\IHPDOHFDVWHVWKHTXHHQWKDWGRHVDOOWKHHJJOD\LQJDQGWKHZRUNHUVWKDWSHUIRUPDOOWKH <br />ZRUNDVVRFLDWHGZLWKFRORQ\PDLQWHQDQFH%RWKWKHTXHHQDQGZRUNHUVDUHUHDUHGIURPIHUWLOL]HGHJJV0DOHV <br />FDOOHGGURQHVFRPSULVHWKHWKLUGFDVWHZKRVHVROHIXQFWLRQLVWRPDWH'URQHVDUHUHDUHGIURPXQIHUWLOL]HG <br />HJJV WKURXJKSDUWKHQRJHQHVLV $PD]LQJO\DIHUWLOL]HGHJJKDVWKHSRWHQWLDOWRGHYHORSLQWRHLWKHUDTXHHQ <br />RUZRUNHUEHHGHSHQGLQJRQWKHGLHWWKH\RXQJDGXOWEHHV QXUVHEHHV IHHGWRWKHGHYHORSLQJODUYD7KLV <br />GLIIHUHQWLDOIHHGLQJWULJJHUVJHQHH[SUHVVLRQDQGJHQHVLOHQFLQJ HSLJHQHWLFFKDQJHV ZKLFKIDFLOLWDWHVODUYDO <br />development into two distinct yet interdependent castes.