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Marine Biology

, Volume 45, Issue 3, pp 255–260 | Cite as

Influence of temperature on the reproductive potential of Oncholaimus oxyuris (Nematoda: Oncholaimidae)

  • C. Heip
  • N. Smol
  • V. Absillis
Article

Abstract

The large nematode Oncholaimus oxyuris Ditlevsen, 1911 is a dominant predator in a shallow polyhaline brackish-water pond in Belgium. The reproductive potential of this species was calculated as the intrinsic rate of natural increase r=1/D In pN e , in which D is the generation time, p is the percentage of females, and N e is the number of eggs per female. The generation time varies between 570 days at 5°C and 101 days at 25°C and is the main factor in the determination of r. The relationship between r and temperature is nearly linear and is given by r=0.0013 T−0.0042. The reproductive potential of O. oxyuris is much lower than would be predicted from body size; this and the dominance of males in the population, is discussed in the light of the evolution of stable predator-prey systems.

Keywords

Body Size Generation Time Reproductive Potential Intrinsic Rate Natural Increase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag 1978

Authors and Affiliations

  • C. Heip
    • 1
    • 2
  • N. Smol
    • 1
  • V. Absillis
    • 1
  1. 1.Department of ZoologyState University of GentGentBelgium
  2. 2.Laboratorium voor Morfologie en SystematiekGentBelgium

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