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  • Title: Life history data on the fly parasitoids Aleochara nigra Kraatz and A. asiatica Kraatz (Coleoptera: Staphylinidae), and their potential application in forensic entomology.
    Author: Lin SW, Shiao SF.
    Journal: Forensic Sci Int; 2013 Oct 10; 232(1-3):46-55. PubMed ID: 24053864.
    Abstract:
    Knowledge of the developmental time of the immature stages of necrophagous flies has been the main tool for estimating minimum post-mortem intervals (min PMIs) in forensic entomology. Many parasitic insects can alter the development of immature stages of flies and thus affect min PMI estimates. The larvae of most species of Aleochara rove beetles are ectoparasitoids of the pupae of cyclorrhapha flies. Among them, some species that parasitise necrophagous flies may have forensic importance. Two Taiwanese Aleochara species, A. nigra and A. asiatica, which visit carrion sites were studied herein. All five necrophagous (Hemipyrellia ligurriens, Lucilia cuprina, Chrysomya megacephala, C. rufifacies and sarcophagid sp.) and one non-necrophagous fly species (Bactrocera dorsalis) we examined have the potential to be parasitised by these two Aleochara species, but differences among the acceptability and suitability of these hosts to rove beetle species suggested that rove beetles may prefer specific hosts. Each stage of the beetle life history was recorded to estimate developmental durations at six different temperatures. The larval stage together with the pupal stage of both beetle species was longer than the pupal stages of their hosts, implying the possibility of elongating the min PMI estimation. In addition, the host weight and larval duration of these two Aleochara beetles were positively correlated; thus, potential applications can be expected when using parasitised fly pupae in min PMI estimations.
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