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Spatial and temporal variation in ca...

Richards, Elizabeth Noel.

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Spatial and temporal variation in carrion blow fly communities: Applications to forensic entomology.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Spatial and temporal variation in carrion blow fly communities: Applications to forensic entomology./
作者:	Richards, Elizabeth Noel.
面頁冊數:	256 p.
附註:	Chairperson: Marilyn A. Houck.
Contained By:	Dissertation Abstracts International62-05B.
標題:	Biology, Ecology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3015727
ISBN:	9780493260334

Spatial and temporal variation in carrion blow fly communities: Applications to forensic entomology.
Richards, Elizabeth Noel.

Spatial and temporal variation in carrion blow fly communities: Applications to forensic entomology. - 256 p.

Chairperson: Marilyn A. Houck.

Thesis (Ph.D.)--Texas Tech University, 2001.

Seasonal and regional carrion decomposition studies were conducted in three geographic regions in Texas. For each study, three domestic pig carcasses were placed 200m apart in each study habitat and were monitored over the course of the decomposition process. Through these studies, spatial and temporal variation in decomposition patterns and in the composition of associated carrion blow fly communities was documented. All studies were repeated over three consecutive years. Distinct patterns of decomposition and distinct blow fly communities were found on a seasonal basis. Both decomposition patterns and composition of the blow fly community were similar among geographic regions. However, certain blow fly species did vary significantly in abundance from one year to the next.

ISBN: 9780493260334Subjects--Topical Terms:

1017726
Biology, Ecology.

Spatial and temporal variation in carrion blow fly communities: Applications to forensic entomology.
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245 1 0 $a Spatial and temporal variation in carrion blow fly communities: Applications to forensic entomology.
300 $a 256 p.
500 $a Chairperson: Marilyn A. Houck.
500 $a Source: Dissertation Abstracts International, Volume: 62-05, Section: B, page: 2161.
502 $a Thesis (Ph.D.)--Texas Tech University, 2001.
520 $a Seasonal and regional carrion decomposition studies were conducted in three geographic regions in Texas. For each study, three domestic pig carcasses were placed 200m apart in each study habitat and were monitored over the course of the decomposition process. Through these studies, spatial and temporal variation in decomposition patterns and in the composition of associated carrion blow fly communities was documented. All studies were repeated over three consecutive years. Distinct patterns of decomposition and distinct blow fly communities were found on a seasonal basis. Both decomposition patterns and composition of the blow fly community were similar among geographic regions. However, certain blow fly species did vary significantly in abundance from one year to the next.
520 $a During the regional decomposition studies, adult individuals of the secondary screwworm fly, Cochliomyia macellaria (F.) were collected. These specimens were used in two different portions of the dissertation. First, an investigation of variation in wing morphology among populations and across years was conducted. Twenty-five characters were measured from the right wing of each specimen. Multivariate statistical analyses were performed, and significant variation was found among populations and across years. Second, mitochondrial DNA variation among populations of C. macellaria was investigated. The entire cytochrome oxidase subunit II (COII) gene was sequenced (693bp) for each individual. Regional variation was documented among all three populations. In addition, the DNA sequences generated in this study will be deposited in GenBank.
520 $a Results from this dissertation are directly applicable to the field of forensic entomology. Entomological evidence collected from crime scenes, which usually involve homicide or an otherwise unattended death, can assist criminal investigations in numerous ways. The application of such evidence to a criminal investigation defines the field of forensic entomology. Entomological evidence can be used to establish a postmortem interval (or time since death), or to determine if human remains have been relocated following death. Results from this dissertation can be used to address questions concerning both time and place of death. Also, novel applications of molecular and multivariate statistical techniques were introduced to aid in the detection of postmortem relocation of human remains.
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