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      Effect of Temperature on the Development and Survival of the Argentine Ant, Linepithema humile

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          Abstract

          The influence of temperature on the developmental times and survival of insects can largely determine their distribution. For invasive species, like the Argentine ant, Linepithema humile Mayr (Hymenoptera: Formicidae), these data are essential for predicting their potential range based on mechanistic models. In the case of this species, such data are too scarce and incomplete to make accurate predictions based on its physiological needs. This research provides comprehensive new data about brood survival and developmental times at a wide range of temperatures under laboratory conditions. Temperature affected both the complete brood development from egg to adult worker and each of the immature stages separately. The higher the temperature, the shorter the development times. Brood survival from egg to adult was low, with the maximum survival rate being only 16% at 26° C. Temperature also affected survival of each of the immature stages differently: eggs were negatively affected by high temperatures, while larvae were negatively affected by low temperatures, and the survival of pupae was apparently independent of environmental temperature. At 32° C no eggs survived, while at 18° C less than 2% of the eggs hatched into larva. The data from the present study are essential for developing prediction models about the distribution range of this tramp species based on its physiological needs in relation to temperature.

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          Most cited references53

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          Community disassembly by an invasive species.

          Invasive species pose serious threats to community structure and ecosystem function worldwide. The impacts of invasive species can be more pervasive than simple reduction of species numbers. By using 7 years of data in a biological preserve in northern California, we documented the disassembly of native ant communities during an invasion by the Argentine ant. In sites without the Argentine ant, native ant communities exhibit significant species segregation, consistent with competitive dynamics. In sites with the Argentine ant, native ant communities appear random or weakly aggregated in species co-occurrence. Comparisons of the same sites before and after invasion indicate that the shift from a structured to a random community is rapid and occurs within a year of invasion. Our results show that invasive species not only reduce biodiversity but rapidly disassemble communities and, as a result, alter community organization among the species that persist.
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            COMPETITIVE MECHANISMS UNDERLYING THE DISPLACEMENT OF NATIVE ANTS BY THE INVASIVE ARGENTINE ANT

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              The worldwide transfer of ants: geographical distribution and ecological invasions

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                Author and article information

                Journal
                J Insect Sci
                J. Insect Sci
                insc
                Journal of Insect Science
                University of Wisconsin Library
                1536-2442
                2010
                8 July 2010
                : 10
                : 97
                Affiliations
                [1]Department of Environmental Sciences, University of Girona, Montilivi Campus s/n, 17071 Girona, Spain
                Author notes

                Associate Editor: Robert Jeanne was editor of this paper.

                Article
                10.1673/031.010.9701
                3383432
                20673121
                d36be140-2b36-413c-939e-3fe14931e9ef
                © 2010

                This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 30 May 2008
                : 17 October 2008
                Page count
                Pages: 13
                Categories
                Article

                Entomology
                invasive species,brood survivorship rate,brood developmental times,hymenoptera,formicidae

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