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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. (1983). Calculation of the intrinsic rate of natural increase, rm, with Rhabditis marina Bastian 1865 (Nematoda). Nematologica 29(4): 468-477. https://dx.doi.org/10.1163/187529283X00348
In: Nematologica. Brill: Kobenhavn; Leiden; Köln; New York. ISSN 0028-2596; e-ISSN 1875-2926, meer
Is gerelateerd aan:
Vranken, G.; Heip, C.H.R. (1988). Calculation of the intrinsic rate of natural increase, rm, with Rhabditis marina Bastian 1865 (Nematoda), in: Heip, C.H.R. et al. (Ed.) Collected papers on meiofauna dynamics and energy flow. pp. 1-10, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Population characteristics
    Nematoda [WoRMS]; Rhabditis (Pellioditis) marina (Bastian, 1865) Dougherty, 1955 [WoRMS]
    Marien/Kust
Auteurs  Top 
  • Vranken, G.
  • Heip, C.H.R., meer
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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