Climate Change and Range Expansion of Protostrongylid Nematodes in the Canadian Arctic ...

Through this doctoral research, I aimed to determine the diversity, distribution and abundances of protostrongylids in muskoxen and caribou from several sites in Subarctic and Arctic Canada and investigate the northward range expansion of Umingmakstrongylus pallikuukensis and Varestrongylus elegunen...

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Bibliographic Details
Main Author: Kafle, Pratap
Format: Article in Journal/Newspaper
Language:English
Published: Graduate Studies 2018
Subjects:
arctic parasitology
protostrongylid
muskox lungworm
arctic climate change
muskoxen
caribou
morphological diagnosis
Ecology
FOS Biological sciences
Parasitology
Arctic
Climate change
muskox
Subarctic
Victoria Island
victoria island
Online Access:https://dx.doi.org/10.11575/prism/33061
https://prism.ucalgary.ca/handle/1880/108708
Description
Summary:Through this doctoral research, I aimed to determine the diversity, distribution and abundances of protostrongylids in muskoxen and caribou from several sites in Subarctic and Arctic Canada and investigate the northward range expansion of Umingmakstrongylus pallikuukensis and Varestrongylus eleguneniensis in relation to Arctic warming. I first developed morphological keys to differentiate the first stage larvae (L1) of U. pallikuukensis, V. eleguneniensis and Parelaphostrongylus andersoni. This enabled me to identify L1 to the species level and determine the intensity of infections. Secondly, I analyzed over 1600 muskox and caribou fecal samples, and 40 muskox lung samples to determine the diversity, distribution and abundance patterns of protostrongylids. I found that the diversity and abundance of protostrongylids varied geographically. Both U. pallikuukensis and V. eleguneniensis had expanded their ranges and increased in abundance on Victoria Island between 2013 and 2017, with U. pallikuukensis expanding ...

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