Schrempf, Alexandra and Reber, Christine and Tinaut, Alberto and Heinze, Juergen (2005) Inbreeding and local mate competition in the ant Cardiocondyla batesii. BEHAVIORAL ECOLOGY AND SOCIOBIOLOGY, 57 (5). pp. 502-510. ISSN 0340-5443,
Full text not available from this repository. (Request a copy)Abstract
The ant species Cardiocondyla batesii is unique in that, in contrast to all other ant species, both sexes are flightless. Female sexuals and wingless, ergatoid males mate in the nest in autumn and young queens disperse on foot to found their own colonies in spring. The close genetic relatedness between queens and their mates (r(qm)= 0.76+/-SE 0.12) and the high inbreeding coefficient (F=0.55; 95% CI 0.45-0.65) suggest that 83% of all matings are between brothers and sisters. As expected from local mate competition theory, sex ratios were extremely female biased, with more than 85% of all sexuals produced being young queens. Despite the common occurrence of inbreeding, we could not detect any adult diploid males. Though the probability of not detecting multiple mating was relatively high, at least one-third of all queens in our sample had mated more than once. Multiple mating to some extent counteracts the effects of inbreeding on worker relatedness (r(ww)=0.68+/-SE 0.05) and would also be beneficial through decreasing diploid male load, if sex was determined by a single locus complementary system.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | COMPLEMENTARY SEX DETERMINATION; SOLENOPSIS-INVICTA HYMENOPTERA; MATING FREQUENCY; POPULATION-STRUCTURE; SOCIAL HYMENOPTERA; REPRODUCTIVE STRATEGIES; MICROSATELLITE ANALYSIS; WORKER REPRODUCTION; RATIO DETERMINATION; MULTIPLE PATERNITY; Formicidae; inbreeding; intranidal mating; multiple mating; local mate competition |
| Subjects: | 500 Science > 590 Zoological sciences |
| Divisions: | Biology, Preclinical Medicine > Institut für Zoologie > Zoologie/Evolutionsbiologie (Prof. Dr. Jürgen Heinze) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 18 May 2021 09:57 |
| Last Modified: | 18 May 2021 09:57 |
| URI: | https://pred.uni-regensburg.de/id/eprint/36388 |
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