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Influence of temperature on the reproductive potential of Oncholaimus oxyuris (Nematoda: Oncholaimidae)
Heip, C.H.R.; Smol, N.; Absillis, V. (1978). Influence of temperature on the reproductive potential of Oncholaimus oxyuris (Nematoda: Oncholaimidae), in: (1978). IZWO Coll. Rep. 8(1978). IZWO Collected Reprints, 8: pp. chapter 13
In: (1978). IZWO Coll. Rep. 8(1978). IZWO Collected Reprints, 8[s.n.][s.l.], more
In: IZWO Collected Reprints. Instituut voor Zeewetenschappelijk Onderzoek: Bredene & Oostende. ISSN 0772-1250, more

Also published as
  • Heip, C.H.R.; Smol, N.; Absillis, V. (1978). Influence of temperature on the reproductive potential of Oncholaimus oxyuris (Nematoda: Oncholaimidae). Mar. Biol. (Berl.) 45: 255-260, more

Keywords
    Marine; Brackish water

Authors  Top 
  • Heip, C.H.R., more
  • Smol, N., more
  • Absillis, V.

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/G ln pNe, in which D is the generation time, p is the percentage of females, and Ne 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.

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