RT Journal Article
T1 Contrasting genetic population structures in acorn weevils ( Curculio spp. ) in expanding forests: The effects of differences in resource‐tracking strategies
A1 Ruiz Carbayo, Helena
A1 Espelta, Josep Maria
A1 Pino, Joan
A1 Hampe, Arndt
A1 Bonal Andrés, Raúl
AB 1. Woody vegetation spread over former croplands in Europe has created new unexploited habitats for forest organisms. Their ability to colonise them and thrive depends on life-history traits including fecundity, dormancy and dispersal ability.2. The effects of these traits on species distribution, abundance and community assembly have been extensively studied in fragmented landscapes. However, their consequences for genetic diversity and connectivity in local populations remain largely unknown.3. We investigated the genetic population structure and diversity of Curculio elephas and Curculio glandium (Coleoptera: Curculionidae), two sympatric acorn weevils with contrasting life-history strategies, in a landscape with mature oak stands and plots of new expanding forests. 4. Using a fragment of a mitochondrial gene cytochrome oxidase subunit 1 and nuclear DNA (80 single nucleotide polymorphisms [SNPs]), we found that gene flow between populations was significantly weaker in the poor disperser C. elephas, especially in isolated new forests. However, genetic neutrality tests did show population expansion in C. elephas, which suffers frequent population bottlenecks (probably linked to extended dormancy) and is a poor coloniser of isolated new forests. However, its greater fecundity allows it to recovery quickly if the number of reproductive individuals falls. Its populations are thus larger but genetically less diverse than those of C. glandium 5. Within foraging guilds, the most fecund species will outcompete the others under a context of constrained dispersal. Hence, new landscapes of expanding forests represent a good opportunity for more mobile but less fecund species to colonise new habitats and so be temporarily released from competition.
PB Wiley
SN 1752-458X
YR 2022
FD 2022-08-17
LK https://hdl.handle.net/20.500.14352/71898
UL https://hdl.handle.net/20.500.14352/71898
LA eng
NO CRUE-CSIC (Acuerdos Transformativos 2022)
NO Unión Europea. FP7
NO Ministerio de Ciencia e Innovación (MICINN)/FEDER
NO Ministerio de Economía y Competitividad (MINECO)
DS Docta Complutense
RD 15 dic 2025