01674nas a2200145   4500008004000000245011400040210006900154260002100223300001100244490000700255520110200262100001101364700001701375856013601392       0                           engd00aArea-wide management of the invasive garden ant Lasius neglectus (Hymenoptera: Formicidae) in northeast Spain0 aAreawide management of the invasive garden ant Lasius neglectus   c2005 (Apr. 2004)  a99-1120 v213 a*[One invading population of Lasius neglectus occupies 14 ha, located in northeast Spain has been managed with a large-scale insecticide treatment, with the aim of reducing its damaging effects in houses & on human well-beings.  During the spring & summer periods of 2001-2002, 45 households were treated.  Some non-urbanized, seminatural infested areas were also treated to avoid the pest expansion.  The treatment plan was intended to attack 3 key aspects of the ants as well as directly killing the ants: 1) killing/destroying ant food sources, 2) limiting access to the ant's food sources, & 3) impeding access to the interior of houses.  The pest control treatment involved a combination of canopy fogging, tree trunk spraying, a house perimeter injection treatment, & in-house baiting.  Reduction of ant trails on trees was 73% (2001) & 68% (2002).  Spots with ants at the perimeter of the house were reduced by 47% (2001) & 30% (2002).  Both the objective assessment of the treatments & the positive opinion of the inhabitants of the houses confirmed the efficacy of the treatment program.]1 aRey, S1 aEspadaler, X  uhttps://antkey.myspecies.info/en/content/area-wide-management-invasive-garden-ant-lasius-neglectus-hymenoptera-formicidae-northeast02162nas a2200133   4500008004100000245012800041210006900169300001200238490000700250520161200257100001701869700001101886856013101897       2001                        eng d00aBiological constraints and colony founding in the polygynous invasive ant <i>Lasius neglectus</i> (Hymenoptera, Formicidae)0 aBiological constraints and colony founding in the polygynous inv  a159-1640 v483 aThe polygynous invasive ant Lasius neglectus was described from Budapest, Hungary, as a unicolonial species, with no apparent colony barriers, and inferred intranidal mating without a nuptial flight. Here we analyze additional morphological characteristics of gynes, their physiological condition at emergence and at the time of mating and we describe the productivity of different types of colony founding in the laboratory. A low increase in dry weight and in fat content from emergence to mating indicates that gynes can only succeed in dependent colony founding. However, the queen-worker thorax volume ratio is typical of a species with independent colony founding and we were able to demonstrate independent colony founding in the laboratory (both haplo- and pleometrotic). Brood development in independent founding is rapid and the number of nanitics higher than in other Lasius species. Both colony budding and dependent colony founding could also be demonstrated in the laboratory. Worker oviposition was absent. The carbohydrate content of newly mated queens is consistent with the observed loss of mating flight of this specis. However the relative wing area clearly indicated that queens should be able to fly. Therefore, both queen morphology and physiological state at maturity show that L. neglectus is intermediate between a monogynous, free-living, non pest ant and a multiqueened (polygynic) invasive tramp ant. The neglected ant thus offers interesting opportunities to study the origin of unicoloniality and the spread of this species in northeast Spain.   (Abstract provided by author.)1 aEspadaler, X1 aRey, S  uhttps://antkey.myspecies.info/en/content/biological-constraints-and-colony-founding-polygynous-invasive-ant-ilasius-neglectusi