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Eimeriid Oocysts From Archaeological Samples in Patagonia, Argentina
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Eimeriid Oocysts From Archaeological Samples in Patagonia, Argentina
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Journal Article
Eimeriid Oocysts From Archaeological Samples in Patagonia, Argentina
2008
Overview
Oocysts attributable to Eimeria macusaniensisGuerrero et al. 1971, were found in coprolites and in archaeological sediments dating to the Holocene of Patagonia, Argentina. By means of a nonparametric regression using a generalized additive model, a significant relationship was found between the size of the oocysts and their antiquity. Specifically, a reduction in oocyst size over time was discovered, probably due to a parasite response to host replacement, to an extinct eimeriid species common during the Pliestocene–Holocene transition, or to environmental changes known for the Holocene. Explanations regarding coevolution between parasites, hosts, and paleoenvironmental conditions are discussed herein.
Publisher
American Society of Parasitologists,Allen Press Inc
Subject
/ Biological and medical sciences
/ Camelids, New World - parasitology
/ Cysts
/ Eimeria - isolation & purification
/ Fossils
/ Fundamental and applied biological sciences. Psychology
/ General aspects and techniques. Study of several systematic groups. Models
/ Geologic Sediments - parasitology
/ Holocene
/ Oocysts
