**Acknowledgements**

This work was supported by mango and prickly pear producers in Mexico by providing fruits for analysis. Also I would like to thank the DGIP, who funded the cauterizer project 21013-DTT. I appreciate the assistance of MI Angel Hernandez Facundo in the preparation of the drawings and the Language Department of the Universidad Autonoma Chapingo for reviewing this manuscript. As well I acknowledge the help from Biol and Ruth Perez in the analysis of data.
