02012nas a2200145   4500008004100000245008100041210006900122260001800191300001200209490000700221520155700228100001201785700001601797856005301813       2008                        eng d00aInvasive ants in Australia: documented and potential ecological consequences0 aInvasive ants in Australia documented and potential ecological c  cNovember 2008  a275-2880 v473 aA growing number of species are being transported and introduced by humans to new locations and are establishing self-sustaining populations outside their native ranges. Since ants play many ecological roles, introduction of an invasive ant species, and subsequent disruption of Australia's rich and abundant native ant fauna, has the potential for numerous adverse consequences. Over 6700 ants representing 105 species from 73 genera have been intercepted at Australian ports of entry in the last 20 years and all six of the world’s most destructive invasive ants have become established in the country. Here we review the current and potential consequences of these ants on Australia's natural and agricultural environments. To date, several studies, most involving the big-headed ant, Pheidole megacephala, and the Argentine ant, Linepithema humile, have documented a decline in native ant species richness. The displacement of native ants by these invaders could have multiple consequences for the native flora and fauna. Since few of these have been investigated in Australia, we combine knowledge from invasions elsewhere, the ecology of the interactions, and data on current and predicted geographic ranges of introduced ants to hypothesize about likely indirect effects of invasive ants in Australia. Further investigations that are aimed at testing these predictions will also aid in justifying and prioritizing national prevention and control efforts, and will contribute to some of the long-standing questions about ant invasions globally.1 aLach, L1 aThomas, M L  uhttps://antkey.myspecies.info/zh-hans/node/2787502049nas a2200169   4500008004100000245013900041210006900180260002100249300001200270490000700282520139400289100001601683700001401699700001401713700001601727856013601743       2010                        eng d00aSupercolony mosaics: two different invasions by the yellow crazy ant, <i>Anoplolepis gracilipes</i>, on Christmas Island, Indian Ocean0 aSupercolony mosaics two different invasions by the yellow crazy   cMarch 2010; Publ  a677-6870 v123 aInvasive species are one of the main reasons for the ongoing global loss of biodiversity. Anoplolepis gracilipes is an invasive ant that has recently received significant attention due to its negative effect on the native fauna and flora of Christmas Island, Indian Ocean. This species has contributed to a drastic change in the structure of the Christmas Island rainforest through its negative impact on the island’s endemic red land crab, the dominant consumer on the islands forest floor. In this study, we investigate the population structure of A. gracilipes on Christmas Island in order to determine whether multiple introductions occurred on the island and how they correspond to known infestations. We genotyped 578 individuals collected from 50 nests across the Island. We identify two distinct subgroups in the population that represent two different supercolonies. These supercolonies are interspersed across the island, however both nuclear (microsatellites) and mitochondrial markers strongly suggest that there is no gene flow between the two colonies. Significant heterozygote excess within the entire sampling area, with all but one worker examined being heterozygous for all seven microsatellite loci, suggests an unusual reproductive system in these ants. Our results are consistent with recent sociogenetic findings in a population of A. gracilipes in Northern Borneo.1 aThomas, M L1 aBecker, K1 aAbbott, K1 aFeldhaar, H  uhttps://antkey.myspecies.info/zh-hans/content/supercolony-mosaics-two-different-invasions-yellow-crazy-ant-ianoplolepis-gracilipesi