Asexual reproduction in introduced and native populations of the ant Cerapachys biroi.

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Serval ID
serval:BIB_DB189348DDCB
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Asexual reproduction in introduced and native populations of the ant Cerapachys biroi.
Journal
Molecular Ecology
Author(s)
Kronauer D.J., Pierce N.E., Keller L.
ISSN
1365-294X (Electronic)
ISSN-L
0962-1083
Publication state
Published
Issued date
2012
Volume
21
Number
21
Pages
5221-5235
Language
english
Abstract
Asexual reproduction is particularly common among introduced species, probably because it helps to overcome the negative effects associated with low population densities during colonization. The ant Cerapachys biroi has been introduced to tropical and subtropical islands around the world since the beginning of the last century. In this species, workers can reproduce via thelytokous parthenogenesis. Here, we use genetic markers to reconstruct the history of anthropogenic introductions of C. biroi, and to address the prevalence of female parthenogenesis in introduced and native populations. We show that at least four genetically distinct lineages have been introduced from continental Asia and have led to the species' circumtropical establishment. Our analyses demonstrate that asexual reproduction dominates in the introduced range and is also common in the native range. Given that C. biroi is the only dorylomorph ant that has successfully become established outside of its native range, this unusual mode of reproduction probably facilitated the species' worldwide spread. On the other hand, the rare occurrence of haploid males and at least one clear case of sexual recombination in the introduced range show that C. biroi has not lost the potential for sex. Finally, we show that thelytoky in C. biroi probably has a genetic rather than an infectious origin, and that automixis with central fusion is the most likely underlying cytological mechanism. This is in accordance with what is known for other thelytokous eusocial Hymenoptera.
Keywords
anthropogenic introduction, asexuality, automixis, Formicidae, parthenogenesis, thelytoky
Pubmed
Web of science
Open Access
Yes
Create date
22/08/2012 17:56
Last modification date
20/08/2019 16:00
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