Journal of Insect Conservation

, Volume 18, Issue 3, pp 295–305

Hybridization rate and climate change: are endangered species at risk?

  • R. A. Sánchez-Guillén
  • J. Muñoz
  • J. Hafernik
  • M. Tierney
  • G. Rodriguez-Tapia
  • A. Córdoba-Aguilar
ORIGINAL PAPER

DOI: 10.1007/s10841-014-9637-5

Cite this article as:
Sánchez-Guillén, R.A., Muñoz, J., Hafernik, J. et al. J Insect Conserv (2014) 18: 295. doi:10.1007/s10841-014-9637-5
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Abstract

Many species are altering their geographic range due to climate change creating new sympatric populations of otherwise allopatric populations. We investigated whether climate change will affect the distribution and thus the pattern of hybridization between two pairs of closely related damselfly species [Ischnura damula and I. demorsa, and I. denticollis and I. gemina (this, an endangered species)]. Thus, we estimated the strength of pre and postmating reproductive barriers between both pairs of species, and we predicted future potential distribution under four different Global Circulation Models and a realistic emissions scenario of climate change by using maximum entropy modelling technique. Our results showed that reproductive isolation (RI) is complete in I. damula × I. demorsa individuals: F1 (first generation) hybrids are produced but do not reach sexual maturation. However, RI in I. denticollis × I. gemina hybrids is high but incomplete and unidirectional: only I. gemina females produced F1 hybrids which mate with males and females of I. denticollis and between them producing BC1 (backcrosses) and F2 (second generation) viable hybrids. Maximum entropy models revealed a northern and westward shift and a general reduction of the potential geographic ranges. Based on the pattern of hybridization, for I. damula and I. demorsa there is a current threat as well as a rapid displacement and/or extinction of I. gemina by I. denticollis. However, the current pattern of extinction may not continue due to the contraction in ranges of the four species.

Keywords

Climate change Range shifts Sympatric distributions MAXENT Hybridization and introgression Displacement and extinction 

Supplementary material

10841_2014_9637_MOESM1_ESM.docx (20 kb)
Supplementary material 1 (DOCX 20 kb)
10841_2014_9637_MOESM2_ESM.docx (12 kb)
Supplementary material 2 (DOCX 11 kb)
10841_2014_9637_MOESM3_ESM.pdf (1.3 mb)
Supplementary material 3 (PDF 1291 kb)

Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • R. A. Sánchez-Guillén
    • 1
  • J. Muñoz
    • 2
    • 3
  • J. Hafernik
    • 4
  • M. Tierney
    • 5
  • G. Rodriguez-Tapia
    • 6
  • A. Córdoba-Aguilar
    • 1
  1. 1.Departamento de Ecología Evolutiva, Instituto de EcologíaUniversidad Nacional Autónoma de MéxicoMexicoMexico
  2. 2.Real Jardín Botánico (RJB-CSIC)MadridSpain
  3. 3.Centro de Biodiversidad y Cambio ClimáticoUniversidad Tecnológica IndoaméricaQuitoEcuador
  4. 4.Department of BiologySan Francisco State UniversitySan FranciscoUSA
  5. 5.USDA Forest Service, Tahoe National ForestCamptonvilleUSA
  6. 6.Unidad de Geomática, Instituto de EcologíaUniversidad Nacional Autónoma de MéxicoMexicoMexico