A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Alternative reproductive tactics and the propensity of hybridization
Tekijät: Tynkkynen K, Raatikainen KJ, Hakkila M, Haukilehto E, Kotiaho JS
Kustantaja: WILEY-BLACKWELL PUBLISHING, INC
Julkaisuvuosi: 2009
Lehti: Journal of Evolutionary Biology
Tietokannassa oleva lehden nimi: JOURNAL OF EVOLUTIONARY BIOLOGY
Lehden akronyymi: J EVOLUTION BIOL
Vuosikerta: 22
Numero: 12
Aloitussivu: 2512
Lopetussivu: 2518
Sivujen määrä: 7
ISSN: 1010-061X
DOI: https://doi.org/10.1111/j.1420-9101.2009.01870.x
Tiivistelmä
One explanation for hybridization between species is the fitness benefits it occasionally confers to the hybridizing individuals. This explanation is possible in species that have evolved alternative male reproductive tactics: individuals with inferior tactics might be more prone to hybridization provided it increases their reproductive success and fitness. Here we experimentally tested whether the propensity of hybridization in the wild depends on male reproductive tactic in Calopteryx splendens damselflies. Counter to our expectation, it was males adopting the superior reproductive tactic (territoriality) that had greatest propensity to hybridize than males adopting the inferior tactics (sneakers and floaters). Moreover, among the territorial males, the most ornamented males had greatest propensity to hybridize whereas the pattern was reversed in the sneaker males. Our results suggest that there is fluctuating selection on male mate discrimination against heterospecific females depending on both ornament size and the male's reproductive tactic.
One explanation for hybridization between species is the fitness benefits it occasionally confers to the hybridizing individuals. This explanation is possible in species that have evolved alternative male reproductive tactics: individuals with inferior tactics might be more prone to hybridization provided it increases their reproductive success and fitness. Here we experimentally tested whether the propensity of hybridization in the wild depends on male reproductive tactic in Calopteryx splendens damselflies. Counter to our expectation, it was males adopting the superior reproductive tactic (territoriality) that had greatest propensity to hybridize than males adopting the inferior tactics (sneakers and floaters). Moreover, among the territorial males, the most ornamented males had greatest propensity to hybridize whereas the pattern was reversed in the sneaker males. Our results suggest that there is fluctuating selection on male mate discrimination against heterospecific females depending on both ornament size and the male's reproductive tactic.
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