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Isolation barriers ...
Isolation barriers and genetic divergence in non-territorial Argia damselflies
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- Nava-Bolaños, Angela (författare)
- National Autonomous University of Mexico
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- Sánchez-Guillén, Rosa A. (författare)
- Lund University,Lunds universitet,MEMEG,Biologiska institutionen,Naturvetenskapliga fakulteten,Department of Biology,Faculty of Science,Instituto de Ecología A.C.
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- Munguía-Steyer, Roberto (författare)
- National Autonomous University of Mexico
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- Córdoba-Aguilar, Alex (författare)
- National Autonomous University of Mexico
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(creator_code:org_t)
- 2016-11-05
- 2017
- Engelska 14 s.
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Ingår i: Biological Journal of the Linnean Society. - : Oxford University Press (OUP). - 0024-4066. ; 120:4, s. 804-817
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Isolation barriers work at different instances during the mating process in odonate insects. In territorial damselflies, heterospecific interactions are mainly precluded by sexual (visual) isolation, while in non-territorial damselflies, heterospecific interactions are mostly precluded by mechanical isolation and sexual (tactile) isolation. In this study we investigated the strength of three premating barriers (visual, mechanical and tactile), genetic divergence and degree of sympatry (on their entire distribution) between four non-territorial Argia damselflies (A. anceps, A. extranea, A. oenea and A. tezpi). Our results are explained in the light of learned mating preferences and Kaneshiro's hypothesis. We detected a strong reproductive isolation between all pairs of species by the joint action of the three studied barriers [visual (90.6%), mechanical (8.7%) and tactile (0.7%)]. Sexual (visual) isolation was the most important barrier, perhaps driven by learning mating preferences. One of the studied species, A. extranea, which is the most derived of the studied species, showed a highly asymmetric isolation in reciprocal crosses, which is consistent with Kaneshiro's hypothesis. Moreover, we detected a negligible ecological niche differentiation between the studied species (70% of shared distribution). Our results suggest that sexual (visual) selection may be an important force driving speciation in non-territorial species.
Ämnesord
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Nyckelord
- Argia damselflies
- Genetic divergence
- Mating preference
- Mechanical isolation
- Niche conservatism
- Non-territorial
- Radiation
- Sexual isolation
- Sympatric patterns
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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