Journal ArticleDOI
Helminth communities in avocets: importance of the compound community.
Dale D. Edwards,Albert O. Bush +1 more
TLDR
Patterns of similarity and overlap in species presence and patterns of linear distribution of intestinal helminths in 22 avocets from 4 populations are reported.Abstract:
This paper reports patterns of similarity and overlap in species presence and patterns of linear distribution of intestinal helminths in 22 avocets from 4 populations. Avocets collected from ephemeral bodies of water in Alberta and Manitoba had communities composed largely of species that are avocet specialists plus some that are host generalists. The composition of helminth communities in these hosts was similar to that reported in earlier surveys of avocet helminths. There was little evidence for competition between helminth species in these communities. In contrast, avocets collected from permanent bodies of water in Alberta had communities composed largely of species that are specialists in various duck species, particularly lesser scaup. These helminths were superimposed on the normal community, fitting into linear gaps along the intestine but also overlapping the distributions of avocet specialists. These lesser scaup specialists exhibit interactive patterns amongst themselves and, to some extent, with avocet specialists. Helminth communities in avocets from ephemeral bodies of water have vacant niches and are largely isolationist in nature. Those in avocets from permanent bodies of water are saturated and are more interactive in nature.read more
Citations
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Journal ArticleDOI
SPECIES RICHNESS OF PARASITE ASSEMBLAGES: Evolution and Patterns
TL;DR: Overall studies of parasite communities suggest that the action of processes determining species richness of parasite assemblages becomes less detectable as focus shifts from parasite faunas to infracommunities.
Journal ArticleDOI
Ecological versus phylogenetic determinants of helminth parasite community richness
TL;DR: It is shown that terrestrial hosts have, on average, fewer component species than aquatic hosts, and the data refute the time hypothesis, which would predict that fishes as the oldest lifestyle should have the richest helminth communities.
Journal ArticleDOI
The relationship between pattern and scale in parasite communities: a stranger in a strange land.
C. R. Kennedy,Albert O. Bush +1 more
TL;DR: The change of scale in analysis has enabled the recognition of generalizations and patterns of heuristic value and improved the understanding of unpredictable communities by interpreting local variation as ecological 'noise' that often obscures fundamental patterns.
Journal ArticleDOI
Patterns and processes in communities of heirninth parasites
TL;DR: Empirical results provide only mixed support for recent theories that attempt to explain variation in the structure and dynamics of helminth parasite assemblages within vertebrate and invertebrate hosts.
References
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Book
Nonparametric Statistical Methods
Myles Hollander,Douglas A. Wolfe +1 more
TL;DR: An ideal text for an upper-level undergraduate or first-year graduate course, Nonparametric Statistical Methods, Second Edition is also an invaluable source for professionals who want to keep abreast of the latest developments within this dynamic branch of modern statistics.
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Organization of a Plant-Arthropod Association in Simple and Diverse Habitats: The Fauna of Collards (Brassica Oleracea)
TL;DR: The results suggest a new proposition, the resource concentration hypothesis, which states that herbivores are more likely to find and remain on hosts that are growing in dense or nearly pure stands; that the most specialized species frequently attain higher relative densities in simple environments; and that biomass tends to become concentrated in a few species, causing a decrease in the diversity of herbsivores in pure stands.
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Biometrika Tables for Statisticians
Journal ArticleDOI
The Measurement of Niche Overlap and Some Relatives
TL;DR: Two indices interpretable in terms of encounters are proposed, which in corporate variation in resource state abundance are also developed for mean crowding, patchiness and niche breadth.
Book
Evolutionary biology of parasites
TL;DR: In this paper, Peter Price integrates the biological attributes that characterize parasites ranging from such diverse groups as viruses, bacteria, protozoa, and fungi, to helminths, mites, insects, and parasitic flowering plants.