Heinze, Juergen and Frohschammer, Sabine and Bernadou, Abel (2019) When invasive ants meet: effects of outbreeding on queen performance in the tramp ant Cardiocondyla itsukii. INSECT SCIENCE, 26 (2). pp. 333-340. ISSN 1672-9609, 1744-7917
Full text not available from this repository. (Request a copy)Abstract
Most disturbed habitats in the tropics and subtropics harbor numerous species of invasive ants, and occasionally the same species has been introduced repeatedly from multiple geographical sources. We examined how experimental crossbreeding between sexuals from different populations affects the fitness of queens of the tramp ant Cardiocondyla itsukii, which is widely distributed in Asia and the Pacific Islands. Eggs laid by queens that mated with nestmate males had a higher hatching rate than eggs laid by queens mated to males from neighboring (Hawaii x Kauai) or distant introduced populations (Hawaii/Kauai x Okinawa). Furthermore, inbreeding queens had a longer lifespan and produced a less female-biased offspring sex ratio than queens from allopatric mating. This suggests that the genetic divergence between different source populations may already be so large that in case of multiple invasions eventual crossbreeding might negatively affect the fitness of tramp ants.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | POPULATION BIOLOGY; CYTOPLASMIC INCOMPATIBILITY; INTRODUCED POPULATIONS; HYMENOPTERA-FORMICIDAE; INBREEDING DEPRESSION; CARDINIUM SYMBIONTS; GENETIC-VARIATION; SEX-RATIO; AGGRESSION; CONSEQUENCES; Cardiocondyla; longevity; outbreeding depression; reproductive success; tramp ants |
| Subjects: | 500 Science > 570 Life sciences 500 Science > 590 Zoological sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Zoologie Biology, Preclinical Medicine > Institut für Zoologie > Zoologie/Evolutionsbiologie (Prof. Dr. Jürgen Heinze) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 15 Apr 2020 10:32 |
| Last Modified: | 15 Apr 2020 10:32 |
| URI: | https://pred.uni-regensburg.de/id/eprint/27319 |
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