NDLI: Effect of suboptimal environment and host age on helminth community of black grouse (Tetrao tetrix)

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Effect of suboptimal environment and host age on helminth community of black grouse (Tetrao tetrix)

Content Provider	Springer Nature Link
Author	Formenti, Nicoletta Viganò, Roberto Rotelli, Luca Ferrari, Nicola Cerutti, Maria Chiara Lanfranchi, Paolo
Copyright Year	2012
Abstract	Helminths have often been considered responsible in driving partially wildlife population density fluctuations; therefore more information have to be achieved when target hosts are endangered or threatened species, such as black grouse (Tetrao tetrix). During 8 years (2003–2010), we collected and analyzed 431 intestinal contents of hunted black grouse from Central Alps (Verbania), recording age, body weights, biometric measures, and the culling site to investigate (1) their helminth community structure, (2) how much infection varies in relation to age class and to prealpine and alpine origin area, and (3) if parasites may act as population destabilizing factors. The helminth community is composed by two nematodes Ascaridia compar and Aonchotheca caudinflata. A. compar is the predominant species, and a significant higher intensity of both helminths is recorded in juveniles. A. caudinflata has a negative effect on weights of all the population subjects (p < 0.001), independently of age and origin area. Prealpine population, characterized by significantly lower weights than those of the alpine ones (p < 0.05), is found more infected by both helminths, with also a negative impact (p < 0.001) of A. compar recorded on prealpine adults’ weights. The negative effect noticed for A. caudinflata emphasizes its pathogenicity and shows that this infection can be considered a further stressor for the studied population. Moreover, A. compar affects essentially adults in prealpine area and this fact, together with the major infection of the entire prealpine population, supports the hypothesis that habitat characteristics play a role in the infectious process.
Starting Page	351
Ending Page	358
Page Count	8
File Format	PDF
ISSN	16124642
Journal	European Journal of Wildlife Research
Volume Number	59
Issue Number	3
e-ISSN	14390574
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-12-13
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Helminths Endangered species Body weight Age class Habitat Pathogenicity Zoology Animal Ecology
Content Type	Text
Resource Type	Article
Subject	Ecology, Evolution, Behavior and Systematics Management, Monitoring, Policy and Law Nature and Landscape Conservation

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