{"refrec":{"BRefID":3311,"RR":"<b>Bergmans, M.</b> (1984). Critique of some practices in life-history studies, with special references to harpacticoid copepods. <i>Aust. J. Mar. Freshw. Res. 35</i>: 375-383","BEntID":3311,"PublicFlag":1,"CheckedFlag":0,"wosflag":null,"vabbflag":null,"RefStringPartII":". <i>Aust. J. Mar. Freshw. Res. 35</i>: 375-383","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Bergmans, M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Bergmans, M.","Englishabstract":"Published studies on the demography and reproductive strategies of harpacticoid copepods are examined critically. At the technical level, the popular approximation <i>r</i> = ln R<sub>0</sub>/T<sub>c</sub> is shown to be inappropriate as an estimate of the intrinsic rate of increase of harpacticoids. It leads to a systematic underestimation, by 8-29%, for life histories typical of fast-breeding species. Various <i>ad hoc</i> variants of <i>r</i> and <i>R<sub>0</sub></i> calculations occurring in the literature are also criticized. At the conceptual level, a more discriminating approach to life-history characteristics is necessary; this applies both to the assessment of their 'strategic' significance, and to their diagnostic power with regard to the various 'strategies'. Special attention is given to the non-equivalence of parity and voltinism. 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