Reproductive isolation in two strains of the marine rotifer Brachionus cf. ibericus (Rotifera, Monogononta) from Quintana Roo, México

. Subsequently, following two months of acclimatisation to laboratory conditions, we conducted taxonomic identification, created monoclonal cultures, performed morphometric characterisation, determined the population growth and resting eggs hatching percentage and performed cross-mating experiments. Twelve and eleven clones were obtained from the northwest and southeast parts of Quintana Roo, respectively. Differences were observed in the production of females, males and resting eggs, as well as in the percentage of resting eggs hatching. We determined that the southeast and northwest Quintana Roo had two different strains of rotifers due to reproductive isolation between the two regions. Therefore, we propose two populations for the coasts of Quintana Roo: Brachionus cf. ibericus "Cancún" strain and "Sian Ka'an" strain.