A comparison of biological performances among a laboratory-isolated population and two wild populations of Moniliformis moniliformis

The Journal of Parasitology
F B Reyda, B B Nickol

Abstract

Divergence of biological performance of a laboratory-reared population of Moniliformis moniliformis (Acanthocephala) was investigated after 31 yr, or approximately 60 generations, of genetic isolation. An isolate of the laboratory-reared population and isolates of 2 wild populations were used to begin 3 independent life cycles that were maintained for 1 generation for interbreeding and life history trait comparison. Both wild population isolates represented populations with open gene flow. One wild population isolate represented a present-day sample of descendants of the parent population of the laboratory isolate. All 3 populations hybridized, and egg production occurred in all mixed-sex pairs of different populations. The 3 populations did not differ significantly in prepatent period, mean daily egg production, or establishment within the definitive host Rattus norvegicus. The 3 populations varied in patent period, but the laboratory-isolated worms differed from the 2 wild population isolates no more than they did from each other. A positive correlation between mean daily egg production and duration of patent period resulted in different cumulative egg productions. A 31-yr period of isolation did not produce greater divergenc...Continue Reading

References

Dec 15, 1975·The Journal of Comparative Neurology·T T Dunagan, D M Miller
Oct 1, 1972·Space Life Sciences·P T HollandA L Burlingame
Apr 25, 1995·Proceedings of the National Academy of Sciences of the United States of America·A MoyaF J Ayala
May 1, 1997·International Journal for Parasitology·A ChehresaM E Scott

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Citations

Jul 9, 2002·The Journal of Parasitology·John Janovy

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Methods Mentioned

BETA
dissections
dissection
2 hybrids

Software Mentioned

SAS

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