@inproceedings{inproceedings4a1ad92e, title = {Ovarian development related to activity levels of nurse workers in Melipona bicolor: evolutionary significance}, author = {Aponte, Olga Inés Cepeda and Imperatriz-Fonseca, Vera Lucia and Santos Filho, Persio de Souza}, year = {2004}, booktitle = {Proceedings of the IBRA International Conference on Tropical Bees} }