An evaluation of sampling methods used to produce insect growth models for postmortem interval estimation

被引:33
作者
Wells, Jeffrey D. [1 ]
Lecheta, Melise C. [2 ]
Moura, Mauricio O. [2 ]
LaMotte, Lynn R. [3 ]
机构
[1] Florida Int Univ, Dept Biol Sci, Miami, FL 33199 USA
[2] Univ Fed Parana, Dept Zool, BR-80060000 Curitiba, Parana, Brazil
[3] Louisiana State Univ, Hlth Sci Ctr, Sch Publ Hlth, New Orleans, LA USA
关键词
Forensic entomology; Chrysomya megacephala; Sarconesia chlorogaster; Inverse prediction; Age estimation; Experimental methods; LUCILIA-SERICATA DIPTERA; FORENSIC IMPORTANCE; CALLIPHORA-VICINA; DEVELOPMENT RATES; LARVAL GROWTH; BLOW FLY; TEMPERATURE; FLIES; AGE; SARCOPHAGIDAE;
D O I
10.1007/s00414-014-1029-6
中图分类号
DF [法律]; D9 [法律]; R [医药、卫生];
学科分类号
0301 ; 10 ;
摘要
Many authors produced carrion insect development data for predicting the age of an insect from a corpse. Under some circumstances, this age value is a minimum postmortem interval. There are no standard protocols for such experiments, and the literature includes a variety of sampling methods. To our knowledge, there has been no investigation of how the choice of sampling method can be expected to influence the performance of the resulting predictive model. We calculated 95 % inverse prediction confidence limits for growth curves of the forensically important carrion flies Chrysomya megacephala and Sarconesia chlorogaster (Calliphoridae) at a constant temperature. Confidence limits constructed on data for entire age cohorts were considered to be the most realistic and were used to judge the effect of various subsampling schemes from the literature. Random subsamples yielded predictive models very similar to those of the complete data. Because taking genuinely random subsamples would require a great deal of effort, we imagine that it would be worthwhile only if the larval measurement technique were especially slow and/or expensive. However, although some authors claimed to use random samples, their published methods suggest otherwise. Subsampling the largest larvae produced a predictive model that performed poorly, with confidence intervals about an estimate of age being unjustifiably narrow and unlikely to contain the true age. We believe these results indicate that most forensic insect development studies should involve the measurement of entire age cohorts rather than subsamples of one or more cohorts.
引用
收藏
页码:405 / 410
页数:6
相关论文
共 33 条
[1]  
[Anonymous], SAS US GUID
[2]  
[Anonymous], 2009, STRENGTHENING FORENS
[3]   Strengthen forensic entomology in court-the need for data exploration and the validation of a generalised additive mixed model [J].
Baque, Michele ;
Amendt, Jens .
INTERNATIONAL JOURNAL OF LEGAL MEDICINE, 2013, 127 (01) :213-223
[4]   Effects of Temperature and Tissue Type on the Development of Cochliomyia macellaria (Diptera: Calliphoridae) [J].
Boatright, Stacy A. ;
Tomberlin, Jeffery K. .
JOURNAL OF MEDICAL ENTOMOLOGY, 2010, 47 (05) :917-923
[5]   Differential gene expression during metamorphosis: a promising approach for age estimation of forensically important Calliphora vicina pupae (Diptera: Calliphoridae) [J].
Boehme, Petra ;
Spahn, Philipp ;
Amendt, Jens ;
Zehner, Richard .
INTERNATIONAL JOURNAL OF LEGAL MEDICINE, 2013, 127 (01) :243-249
[6]   Effects of temperature on Sarcophaga haemorrhoidalis (Diptera: Sarcophagidae) development [J].
Byrd, JH ;
Butler, JF .
JOURNAL OF MEDICAL ENTOMOLOGY, 1998, 35 (05) :694-698
[7]   Effects of temperature on Chrysomya rufifacies (Diptera: Calliphoridae) development [J].
Byrd, JH ;
Butler, JF .
JOURNAL OF MEDICAL ENTOMOLOGY, 1997, 34 (03) :353-358
[8]   The development of the black blow fly, Phormia regina (Meigen) [J].
Byrd, JH ;
Allen, JC .
FORENSIC SCIENCE INTERNATIONAL, 2001, 120 (1-2) :79-88
[9]   Determination of drug levels and the effect of diazepam on the growth of necrophagous flies of forensic importance in southeastern Brazil [J].
Carvalho, LML ;
Linhares, AX ;
Trigo, JR .
FORENSIC SCIENCE INTERNATIONAL, 2001, 120 (1-2) :140-144
[10]   Rate of development of Hydrotaea rostrata under summer and winter (cyclic and constant) temperature regimes [J].
Dadour, IR ;
Cook, DF ;
Wirth, N .
MEDICAL AND VETERINARY ENTOMOLOGY, 2001, 15 (02) :177-182