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Published on: February 20, 2015
Eimeriid oocysts from archaeological samples in Patagonia, Argentina
M H Fugassa1, N H Sardella, V Taglioretti
1Conicet-Laboratorio de Zoonosis Parasitarias, Departamento de Biología, Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Mar del Plata. Mar del Plata, Argentina. mfugassa@mdp.edu.ar
The Journal of Parasitology
|June 26, 2008
Summary
Ancient parasite oocysts from Patagonia show size reduction over time. This finding suggests evolutionary responses to host changes or environmental shifts during the Holocene epoch.
Area of Science:
- Paleoparasitology
- Archaeology
- Evolutionary Biology
Background:
- Oocysts of Eimeria macusaniensis were identified in Holocene Patagonian coprolites and sediments.
- This research investigates the relationship between parasite oocyst size and geological age.
Observation:
- A significant inverse correlation was observed between Eimeria oocyst size and their antiquity.
- Oocyst size decreased over the Holocene period.
Findings:
- The reduction in oocyst size may indicate parasite adaptation to changing hosts or environmental conditions.
- Potential factors include host replacement, an extinct eimeriid species, or Holocene environmental alterations.
Implications:
- This study offers insights into host-parasite coevolutionary dynamics.
- Understanding these dynamics is crucial for reconstructing past ecological conditions and host-parasite interactions.
