Pleistocene climate changes shaped the population structure of Partamona seridoensis (Apidae, Meliponini), an endemic stingless bee from the Neotropical dry forest

Author(s)

Miranda, Elder Assis ; Ferreira, Katie Maria ; Carvalho, Airton Torres ; Martins, Celso Feitosa ; Fernandes, Carlo Rivero ; Del Lama, Marco Antonio

• Document type: Journal article
• Source: PLoS One; v. 12, n. 4 APR 14 2017.
• Web of Science Citations: 5

Abstract

Partamona seridoensis is an endemic stingless bee from the Caatinga, a Neotropical dry forest in northeastern Brazil. Like other stingless bees, this species plays an important ecological role as a pollinator. The aim of the present study was to investigate the genetic structure and evolutionary history of P. seridoensis across its current geographic range. Workers from 84 nests from 17 localities were analyzed for COI and Cytb genic regions. The population structure tests (Bayesian phylogenetic inference, AMOVA and haplotype network) consistently characterized two haplogroups (northwestern and eastern), with little gene flow between them, generating a high differentiation between them as well as among the populations within each haplogroup. The Mantel test revealed no isolation by distance. No evidence of a potential geographic barrier in the present that could explain the diversification between the P. seridoensis haplogroups was found. However, Pleistocene climatic changes may explain this differentiation, since the initial time for the P. seridoensis lineages diversification took place during the mid-Pleistocene, specifically the interglacial period, when the biota is presumed to have been more associated with dry conditions and had more restricted, fragmented geographical distribution. This event may have driven diversification by isolating the two haplogroups. Otherwise, the climatic changes in the late Pleistocene must not have drastically affected the population dynamics of P. seridoensis, since the Bayesian Skyline Plot did not reveal any substantial fluctuation in effective population size in either haplogroup. Considering its importance and the fact that it is an endemic bee from a very threatened Neotropical dry forest, the results herein could be useful to the development of conservation strategies for P. seridoensis. (AU)

• FAPESP's process: 11/21501-2 - Bee population genetics and the extinction vortex of the Hymenoptera
• Grantee: Marco Antonio Del Lama
• Support type: Regular Research Grants
• FAPESP's process: 12/23342-1 - Colonization and dispersal in the areas of occurrence and population genetics of Partamona rustica (Hymenoptera: Apidae: Meliponini)
• Grantee: Elder Assis Miranda
• Support type: Scholarships in Brazil - Doctorate