Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
William Suárez Duque, MINSAP
Ave. 37 No. 4636 Rpto. La Loma, Caimito, La Habana, Cuba
Orlando H. Garrido, Museo Nacional de Historia Natural