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Article
The influence of geographical location, host maturity and sex on intestinal helminth communities of the double-crested cormorant Phalacrocorax auritus from theeastern United States
Helminthology (2017)
  • Kate L Sheehan, Southern Arkansas University
  • Katie C Hanson-Dorr, USDA NWRC
  • Brian S Dorr, USDA National Wildlife Research Center
  • Greg Yarrow, Clemson University
  • Ron J Johnson, Clemson University
Abstract
Here the intestinal helminth infracommunities of 218 double-crested cormorants (Phalacrocorax auritus) from 11 locations in Alabama, Minnesota, Mississippi and Vermont are documented. Trematode infections were presentin 98% of hosts; 65% of cormorants carried cestode infections, 4% were infectedwith acanthocephalans and 66% had nematode intestinal  parasites. Parasite infracommunities of hosts collected on wintering grounds had higher richness and diversity than did birds collected on breeding grounds. Differences in parasite richness and diversity between male and female P. auritus were also detected, but not between immature and mature bird hosts. Parasite intensity didnot differ by sex, maturity, or between breeding and wintering season. The most common parasite was Drepanocephalus auritus (spathans), which is recognized
as a disease agent that negatively impacts the catfish aquaculture industry in the US. Echinochasmus sp. in double-crested cormorants is documented for the first time in the United States. We suggest that the differences observed among parasite infracommunities could be associated with the foraging distances travelled by P. auritus during breeding and wintering seasons, which is limited by allocation of parental care during the breeding season.
Keywords
  • Cormorants,
  • parasites
Publication Date
August, 2017
DOI
doi:10.1017/S0022149X16000675
Citation Information
Kate L Sheehan, Katie C Hanson-Dorr, Brian S Dorr, Greg Yarrow, et al.. "The influence of geographical location, host maturity and sex on intestinal helminth communities of the double-crested cormorant Phalacrocorax auritus from theeastern United States" Helminthology Vol. 91 (2017) p. 561 - 568
Available at: http://works.bepress.com/brian_dorr/57/