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Zhang Y, Wang Y, Sun J, Hu G, Wang M, Amendt J, Wang J. Temperature-dependent development of the blow fly Chrysomya pinguis and its significance in estimating postmortem interval. ROYAL SOCIETY OPEN SCIENCE 2019; 6:190003. [PMID: 31598276 PMCID: PMC6774990 DOI: 10.1098/rsos.190003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 08/09/2019] [Indexed: 06/10/2023]
Abstract
Chrysomya pinguis (Walker) (Diptera: Calliphoridae) is an endemic Asiatic blow fly species of forensic importance. Chrysomya pinguis is one of the first species to colonize a corpse, especially in high altitude areas during spring and autumn when the ambient temperature is lower. Despite its potential for forensic investigations to estimate the minimum postmortem interval (PMImin), little is known about the development of C. pinguis. In this study, C. pinguis was collected from the Yangtze River Delta region of China and reared at seven constant temperatures between 16°C and 34°C to investigate the effect of temperature on development duration, accumulated degree hours and larval body length of C. pinguis. Isomorphen and isomegalen diagrams for C. pinguis were generated using the results, and equations describing the variation in larval body length during development and the temperature-induced variation in development time were also obtained. Chrysomya pinguis can complete its life cycle at 16-34°C. The mean (±s.d.) developmental durations of C. pinguis from egg to adult at 16°C, 19°C, 22°C, 25°C, 28°C, 31°C and 34°C were 811.0 ± 3.8, 544.8 ± 2.0, 379.8 ± 1.8, 306.7 ± 2.4, 250.0 ± 2.8, 203.2 ± 2.1 and 185.3 ± 1.6 h, respectively. The mean (±s.e.) developmental threshold temperature D0 and the thermal summation constant K of the whole developmental process of C. pinguis were estimated as 10.88 ± 0.21°C and 4256.50 ± 104.50 degree hours, respectively. This study provides fundamental development data for the use of C. pinguis to estimate PMImin.
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Affiliation(s)
- Yingna Zhang
- Department of Forensic Medicine, Soochow University, Ganjiang East Road, Suzhou 215000, People's Republic of China
- Department of Anatomy, Shihezi University, Beisi Road, Shihezi, People's Republic of China
| | - Yu Wang
- Department of Forensic Medicine, Soochow University, Ganjiang East Road, Suzhou 215000, People's Republic of China
| | - Jian Sun
- Criminal Police Branch, Wuxi Public Security Bureau, Qianhu Road, Wuxi, People's Republic of China
| | - Guoliang Hu
- Department of Forensic Medicine, Soochow University, Ganjiang East Road, Suzhou 215000, People's Republic of China
| | - Man Wang
- Department of Forensic Medicine, Soochow University, Ganjiang East Road, Suzhou 215000, People's Republic of China
| | - Jens Amendt
- Institute of Forensic Medicine, University of Frankfurt, Kennedyallee, Frankfurt/Main, Germany
| | - Jiangfeng Wang
- Department of Forensic Medicine, Soochow University, Ganjiang East Road, Suzhou 215000, People's Republic of China
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GlobalFiler ® Express DNA amplification kit in South Africa: Extracting the past from the present. Forensic Sci Int Genet 2016; 24:194-201. [DOI: 10.1016/j.fsigen.2016.07.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 06/10/2016] [Accepted: 07/11/2016] [Indexed: 01/23/2023]
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Fujihara J, Takeshita H, Tsubota E, Iida R. Allele frequencies and haplotypes for five Y-STRs (DYS441, DYS442, DYS443, DYS444, and DYS445) in Ovambo and Turks populations using multiplex PCR system. Forensic Sci Int Genet 2009; 3:268-9. [PMID: 19647714 DOI: 10.1016/j.fsigen.2009.03.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2008] [Revised: 01/05/2009] [Accepted: 03/21/2009] [Indexed: 11/19/2022]
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Fujihara J, Yuasa I, Muro T, Iida R, Tsubota E, Nakamura H, Imamura S, Yasuda T, Takeshita H. Allele frequencies and haplotypes for 28 Y-STRs in Ovambo population. Leg Med (Tokyo) 2009; 11:205-8. [DOI: 10.1016/j.legalmed.2009.03.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2008] [Revised: 03/16/2009] [Accepted: 03/17/2009] [Indexed: 11/15/2022]
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Allele frequencies for 15 STR loci in Ovambo population using AmpFlSTR® Identifiler Kit. Leg Med (Tokyo) 2008; 10:157-9. [DOI: 10.1016/j.legalmed.2007.10.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2007] [Accepted: 10/26/2007] [Indexed: 11/22/2022]
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Fujihara J, Muro T, Nakamura H, Imamura S, Takeshita H. Allele frequencies for nine STR loci in Ovambo population using AmpFlSTR® Profiler Kit. Forensic Sci Int 2007; 169:e7-9. [PMID: 17350779 DOI: 10.1016/j.forsciint.2007.02.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2006] [Revised: 01/29/2007] [Indexed: 10/23/2022]
Abstract
Allele frequencies for the nine short tandem repeat (STR) loci D3S1358, vWA, FGA, TH01, TPOX, CSF1PO, D5S818, D13S317, and D7S820 were investigated in 195 unrelated Ovambo (Bantus) population from Namibia. AmpFlSTR Profiler Kit was employed for amplification. For each locus, 6-19 alleles were observed. Comparison between Ovambo population data and that of other African populations was performed. AmpFlSTR Profiler detection system is a useful tool for individual identification in Ovambo population.
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Affiliation(s)
- Junko Fujihara
- Department of Legal Medicine, Shimane University School of Medicine, 89-1 Enya, Izumo, Shimane 693-8501, Japan
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Tofanelli S, Boschi I, Bertoneri S, Coia V, Taglioli L, Franceschi MG, Destro-Bisol G, Pascali V, Paoli G. Variation at 16 STR loci in Rwandans (Hutu) and implications on profile frequency estimation in Bantu-speakers. Int J Legal Med 2003; 117:121-6. [PMID: 12690511 DOI: 10.1007/s00414-002-0349-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2002] [Accepted: 10/23/2002] [Indexed: 11/29/2022]
Abstract
A data set of 16 autosomal STRs (the 13 CODIS loci plus HumCD4, HumFES, HumF13A1) was obtained in a sample of 52 unrelated Hutus from Rwanda. Genotypes at all loci met Hardy-Weinberg expectations with the exception of HumCSF1PO. No significant evidence of association across alleles at independent loci was obtained. Statistical parameters demonstrated the forensic usefulness of the analysed systems (combined PE=0.9999996, combined PD=1:2.27 x 10(18)). Pairwise comparisons showed that the Hutu gene pool differs substantially from that of other Bantu-speaking populations suggesting the use of ethnic-specific population databases in forensic casework analysis. The introduction of a non-negligible bias was confirmed by calculating the differences between multiple-locus profile frequencies of western and eastern Bantoids using local and non-local reference databases.
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Affiliation(s)
- Sergio Tofanelli
- Department of Ethology, Ecology and Evolution, Anthropology Unit, University of Pisa, Via S. Maria 55, 56126, Pisa, Italy.
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A Simple Method of DNA Extraction and STR Typing from Urine Samples Using a Commercially Available DNA/RNA Extraction Kit. J Forensic Sci 2003. [DOI: 10.1520/jfs2002184] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Tofanelli S, Taglioli L, Varesi L, Paoli G. The STR-based genetic profile of the population from Corsica island (France). Forensic Sci Int 2001; 123:33-8. [PMID: 11731194 DOI: 10.1016/s0379-0738(01)00516-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Short tandem repeats (STR) at loci HumFES/FPS, HumVWA, HumCSF1PO, HumTH01, HumFXIIIA01, HumTPOX, HumCD4, D3S1358 are markers of choice for population genetics and validated systems for forensic use. In this report, we analysed their allele frequency distribution in a sample of native blood donors from the two departments of Corsica island (France). Deviations from the Hardy-Weinberg rule and heterozygosity values consistently suggested a spatial differentiation of allele and genotype frequencies across the island. Pairwise comparisons showed that Corsican gene pool presents a high level of heterogeneity between departments and substantially differs from that of neighbouring and historically-related populations. The results suggest the use of local databases to calculate a priori statistics in human identity testing.
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Affiliation(s)
- S Tofanelli
- Department of Ethology, Ecology and Evolution, Anthropology Unit, University of Pisa, Via S. Maria 55, 56126 Pisa, Italy.
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Lin Z, Ohshima T, Gao S, Kondo T, Takayasu T, Sato Y, Sun K. Genetic variation and relationships at five STR loci in five distinct ethnic groups in China. Forensic Sci Int 2000; 112:179-89. [PMID: 10940603 DOI: 10.1016/s0379-0738(00)00272-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Five short tandem repeat (STR) systems of TH01, vWA, LPL, F13B and FES/FPS were investigated in five ethnic groups living in China (Tujia, Miao, Bai, Chaoxian and Han). All five loci did not deviate from the Hardy-Weinberg equilibrium (P>0.05). At the five loci of each ethnic group, the observed heterozygosity, the mean exclusion chance (MEC), and the power of discrimination (PD) ranged from 0.42 to 0.86, from 0.20 to 0.66 and from 0.61 to 0.95, respectively. For the five ethnic groups, the combined MEC and combined PD were >0. 9360 and >0.9998, respectively, suggesting that combinations of these five systems are feasible for DNA typing in forensic investigations such as personal identification or paternity testing. Furthermore, the allelic frequencies at the five loci suggested that these five ethnic groups were distinctly different communities. Judging from the phylogenetic tree constructed based on the genetic distance among the five ethnic groups, Han, Chaoxian and Tujia were involved in an identical cluster, and Miao and Bai in another. These findings indicate that each of the five groups examined is not only a distinct community, but also has a relationship with each of the others.
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Affiliation(s)
- Z Lin
- Department of Legal Medicine, Faculty of Medicine, School of Medicine, Kanazawa University, Takara-machi 13-1, 920-8640, Kanazawa, Japan.
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Takeshita H, Mori S, Yasuda T, Mogi K, Nakajima T, Nakazato E, Tsutsumi S, Fujikawa K, Kaneko Y, Iida R, Kishi K. Japanese population data for two STR loci, HumTPO and HumLPL. Leg Med (Tokyo) 2000; 2:64-7. [PMID: 12935444 DOI: 10.1016/s1344-6223(00)80025-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The two short tandem repeat (STR) systems, HumTPO and HumLPL, were investigated in blood samples obtained from approximately 800 unrelated Japanese individuals living in seven geographically different areas of Japan. Neither deviation from a Hardy-Weinberg equilibrium nor significant difference between the allele distributions was found among the seven Japanese populations in the two STR systems. These findings indicate that there is a general uniformity for both the STR loci in the Japanese population.
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Affiliation(s)
- H Takeshita
- Department of Legal Medicine, Gunma University School of Medicine, Maebashi, Gunma 371-8511, Japan
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Abstract
Six microsatellite - or short tandem repeat (STR) - systems with uniform repetitive sequences (HumTH01, HumCD4, HumFES/FPS, HumF13B, HumTPO, HumLPL) and three compound repeat systems (HumVWA, HumFIBRA, D21S11) were used, including data from the literature, to determine genetic distances among eight populations worldwide. The TH01- and VWA homologous loci in nonhuman primates (chimpanzees, gorillas, orangutans, rhesus monkeys, ring-tailed lemurs) were compared and found to be shorter than in humans. Microsatellites of lower complexity were most efficient for the separation of major ethnic groups. The loci of higher complexity showed a leveling of the diversity differences among populations, which could be attributed to higher mutation rates.
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Affiliation(s)
- P Wiegand
- Institute of Legal Medicine, Universität Halle-Wittenberg, Halle/S, Germany.
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