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| Calculation of the intrinsic rate of natural increase, rm, with Rhabditis marina Bastian 1865 (Nematoda) |
| Vranken, G.; Heip, C.H.R. (1985). Calculation of the intrinsic rate of natural increase, rm, with Rhabditis marina Bastian 1865 (Nematoda), in: (1985). IZWO Coll. Rep. 15(1985). IZWO Collected Reprints, 15: pp. chapter 2 [Subsequent publication] |
| In: (1985). IZWO Coll. Rep. 15(1985). IZWO Collected Reprints, 15[s.n.][s.l.], meer |
| In: IZWO Collected Reprints. Instituut voor Zeewetenschappelijk Onderzoek: Oostende. ISSN 0772-1250, meer |
| Ook gepubliceerd als |
- Vranken, G.; Heip, C.H.R. (1983). Calculation of the intrinsic rate of natural increase, rm, with Rhabditis marina Bastian 1865 (Nematoda) Nematologica 29: 468-477, meer
- Vranken, G.; Heip, C.H.R. (1983). Calculation of the intrinsic rate of natural increase, rm, with Rhabditis marina Bastian 1865 (Nematoda), in: Heip, C.H.R. et al. (Ed.) (1988). Collected papers on meiofauna dynamics and energy flow. : pp. 468-477, meer
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| Trefwoorden |
Populatiekarakteristieken; Nematoda [Nematoden] [WoRMS]; Rhabditis marina [WoRMS]; Marien |
| Abstract |
The life-cycle of Rhabditis marina Bastian 1865 was studied at 25°C and 20 promille salinity. The following demographic parameters were computed from life-table data: the intrinsic rate of natural increase (rm) = 0.914 day; net reproductivity (R0) = 400; minimum generation time (Tmin) = 4.5 days; cohort generation time (Tc) = 7.2 days; mean generation time (T) = 6.6 days; and the age of an adult female when a median egg is deposited (T) = 6.1 days. Several approximate equations used to estimate rm were compared with these life-table calculations. Some give erroneous estimations and should be used with extreme caution. For iteroparous organisms (including most free-living nematodes), Tmin only gives an indication of the development time and is therefore unsuitable for describing "mean generation time". |
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