Abstract.
During the summer months of the year 2001, six forensic cases (one is reported in the present paper), a pig carrion study in the city of Vienna (latitude 48°12'N, longitude 16°22'E) and several liver-baited traps north of Vienna, yielded large numbers of maggots of the blowfly Chrysomya albiceps (Wiedemann) (Diptera: Calliphoridae). Apart from some records from France, reports of C. albiceps from the palearctic region north of the Alps (i.e. north of a latitude of 48°N) have been scarce. Our findings provided an opportunity to derive developmental schedules for C. albiceps at five different constant temperatures (15, 20, 25, 30, 35°C). The minimal duration of development from oviposition to adult was inversely related to temperature, ranging from 8.3 ± 0.5 days at 35°C to 19.2 ± 0.92 days at 20°C. Although eggs hatched after 1.9 ± 0.16 days at 15°C, larvae did not complete development and frequently died during the first instar stage. We also found a high mortality rate (up to 99%) of native L. sericata larvae caused by predation of C. albiceps larvae under laboratory conditions, indicating a high susceptibility of L. sericata to attack by C. albiceps. Apart from this, the current and possible future distribution of C. albiceps in Europe is discussed. The northward expansion of its range beyond southern Europe obviously decreases the value of C. albiceps in estimating the site of death, in that it is no longer exclusive to southern European regions. Moreover, the aggressive feeding behaviour of second and third instar larve of C. albiceps could reset the post-mortem insect clock by clearing a corpse of all earlier arrivers.
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Grassberger, M., Friedrich, E. & Reiter, C. The blowfly Chrysomya albiceps (Wiedemann) (Diptera: Calliphoridae) as a new forensic indicator in Central Europe. Int J Legal Med 117, 75–81 (2003). https://doi.org/10.1007/s00414-002-0323-x
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DOI: https://doi.org/10.1007/s00414-002-0323-x