File:Dermacentor andersoni PHIL 10865.tif

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	09:10, 2 March 2023		3,880 × 2,608 (28.34 MB)	commons>Mudsk	{{Information \|Description={{en\|This photograph depicts a dorsal view of a female Rocky Mountain wood tick, Dermacentor andersoni. This tick species is a known North American vector of Rickettsia rickettsii, which is the etiologic agent of Rocky Mountain spotted fever (RMSF). See PHIL 10869, for a side-by-side comparative view of both a male and female, D. andersoni tick.}} \|Source={{CDC-PHIL\|10865\|TIFF}} \|Date=2008 \|Author=James Gathany \|Permission={{PD-USGov-HHS-CDC}} \|other_versions= }} [[...

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Image title	2008 Dr. Christopher Paddock This photograph depicts a dorsal view of a female Rocky Mountain wood tick, <i>Dermacentor andersoni</i>. This tick specie is a know North American vector of <i>Rickettsia rickettsii</i>, which is the etiologic agent of Rocky Mountain spotted fever.<p></b><i>Dermacentor andersoni</i> is found in the Rocky Mountain states and in southwestern Canada. The life cycle of this tick may require up to 2 to 3 years for completion. Adult wood ticks feed primarily on large mammals, while the larvae and nymphs feed on small rodents. See PHIL 10869, for a side-by-side comparative view of both a male and female <i>D. andersoni</i> tick. Rocky Mountain spotted fever, like all rickettsial infections, is classified as a zoonosis. Zoonoses are diseases of animals that can be transmitted to humans. Many zoonotic diseases require a biological vector (e.g., a mosquito, tick, flea, or mite) in order to be transmitted from the animal host to the human host. In the case of Rocky Mountain spotted fever, ticks are the natural hosts, serving as both reservoirs and vectors of R. rickettsii. Ticks transmit the organism to vertebrates primarily by their bite. Less commonly, infections may occur following exposure to crushed tick tissues, fluids, or tick feces.
Camera manufacturer	NIKON CORPORATION
Camera model	NIKON D200
Author	Photographer: James Gathany
Width	3,880 px
Height	2,608 px
Bits per component	8 8 8
Compression scheme	LZW
Pixel composition	RGB
Orientation	Normal
Number of components	3
Number of rows per strip	1
Horizontal resolution	300 dpi
Vertical resolution	300 dpi
Data arrangement	chunky format
Software used	Adobe Photoshop CS3 Windows
File change date and time	09:13, 24 November 2008

File:Dermacentor andersoni PHIL 10865.tif

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