The fecundity and somatic growth rates of Calanus agulhensis and Calanoides carinatus, the dominant large calanoid copepods in the southern Benguela upwelling system, as well as the fecundity of several other common copepods, were measured between September and March of 1993/94 and 1994/95. Mean egg production of most copepods was low at textless30 eggs female"1 day1 p̌hantomCalanoides carinatus 23.7, Calanus agulhensis 19.0, Neocalanus tonsus 16.1 and Rhincalanus nasutus 26.1), whereas the mean fecundity of Centropages brachiatus was significantly greater (83.6 eggs female"1 day1). This study also presents the first comprehensive field estimates of the fecundity of Nannocalanus minor (mean: 26.1 eggs female"1 day1, range: 0.0-96.2 eggs female"1 day1) and of somatic growth of N6 and all copepodite stages of Calanoides carinatus (decreasing from 0.58 day1 for N6 to 0.04 day1 for C5). Somatic growth rates of Calanus agulhensis also declined with age: from 0.57 day1 for N6 to 0.09 day1 for C5. Data on growth rates were used to assess the relative importance of food [as measured by total chlorophyll (Chi) a concentration], phytoplankton cell size (proportion of cells textgreater10 urn) and temperature to the growth of copepods. Multiple regression results suggested that fecundity and somatic growth rates were positively related to both Chi a concentration and phytoplankton cell size, but not to temperature. Although it was not possible to separate the effects of Chi a concentration and phytoplankton cell size, data from previous laboratory experiments suggest that copepod growth is not limited by small cells per se, but by the low Chi a concentrations that are associated with these particles in thefield.Despite growth not being directly related to temperature, a domeshaped relationship was evident in some species, with slower growth rates at cool (textless13°C) and warm (textgreater18°C) temperatures. The shape of this relationship mirrors that of Chi a versus temperature, where poor Chi a concentrations are associated with cool and warm temperatures. It is concluded that the effect of food limitation on growth of copepods outweighs that of temperature in the southern Benguela region. Sources of variability in relationships between growth and Chi a concentration are discussed.