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Simulating range expansion: male species recognition and loss of premating isolation in damselflies

Wellenreuther, Maren LU ; Tynkkynen, Katja and Svensson, Erik LU (2010) In Evolution; international journal of organic evolution 64. p.242-252
Abstract
Prolonged periods of allopatry might result in loss of the ability to discriminate against other formerly sympatric species, and can lead to heterospecific matings and hybridization upon secondary contact. Loss of premating isolation during prolonged allopatry can operate in the opposite direction of reinforcement, but has until now been little explored. We investigated how premating isolation between two closely related damselfly species, Calopteryx splendens and C. virgo, might be affected by the expected future northward range expansion of C. splendens into the allopatric zone of C. virgo in northern Scandinavia. We simulated the expected secondary contact by presenting C. splendens females to C. virgo males in the northern allopatric... (More)
Prolonged periods of allopatry might result in loss of the ability to discriminate against other formerly sympatric species, and can lead to heterospecific matings and hybridization upon secondary contact. Loss of premating isolation during prolonged allopatry can operate in the opposite direction of reinforcement, but has until now been little explored. We investigated how premating isolation between two closely related damselfly species, Calopteryx splendens and C. virgo, might be affected by the expected future northward range expansion of C. splendens into the allopatric zone of C. virgo in northern Scandinavia. We simulated the expected secondary contact by presenting C. splendens females to C. virgo males in the northern allopatric populations in Finland. Premating isolation towards C. splendens in northern allopatric populations was compared to sympatric populations in southern Finland and southern Sweden. Male courtship responses of C. virgo towards conspecific females showed limited geographic variation, however, courtship attempts towards heterospecific C. splendens females increased significantly from sympatry to allopatry. Our results suggest that allopatric C. virgo males have partly lost their ability to discriminate against heterospecific females. Reduced premating isolation in allopatry might lead to increased heterospecific matings between taxa that are currently expanding and shifting their ranges in response to climate change. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Evolution; international journal of organic evolution
volume
64
pages
242 - 252
publisher
Wiley-Blackwell
external identifiers
  • wos:000273455300019
  • scopus:73949145231
ISSN
1558-5646
DOI
10.1111/j.1558-5646.2009.00815.x
language
English
LU publication?
yes
id
44760616-deba-405b-a4e8-967d33f83248 (old id 1469831)
date added to LUP
2009-09-11 12:19:24
date last changed
2018-06-10 04:01:22
@article{44760616-deba-405b-a4e8-967d33f83248,
  abstract     = {Prolonged periods of allopatry might result in loss of the ability to discriminate against other formerly sympatric species, and can lead to heterospecific matings and hybridization upon secondary contact. Loss of premating isolation during prolonged allopatry can operate in the opposite direction of reinforcement, but has until now been little explored. We investigated how premating isolation between two closely related damselfly species, Calopteryx splendens and C. virgo, might be affected by the expected future northward range expansion of C. splendens into the allopatric zone of C. virgo in northern Scandinavia. We simulated the expected secondary contact by presenting C. splendens females to C. virgo males in the northern allopatric populations in Finland. Premating isolation towards C. splendens in northern allopatric populations was compared to sympatric populations in southern Finland and southern Sweden. Male courtship responses of C. virgo towards conspecific females showed limited geographic variation, however, courtship attempts towards heterospecific C. splendens females increased significantly from sympatry to allopatry. Our results suggest that allopatric C. virgo males have partly lost their ability to discriminate against heterospecific females. Reduced premating isolation in allopatry might lead to increased heterospecific matings between taxa that are currently expanding and shifting their ranges in response to climate change.},
  author       = {Wellenreuther, Maren and Tynkkynen, Katja and Svensson, Erik},
  issn         = {1558-5646},
  language     = {eng},
  pages        = {242--252},
  publisher    = {Wiley-Blackwell},
  series       = {Evolution; international journal of organic evolution},
  title        = {Simulating range expansion: male species recognition and loss of premating isolation in damselflies},
  url          = {http://dx.doi.org/10.1111/j.1558-5646.2009.00815.x},
  volume       = {64},
  year         = {2010},
}