caa a22 4500 477091148 CHVBK 20180405111515.0 cr unu---uuuuu 170330e19960501xx s 000 0 eng 10.1007/BF01237683 doi (NATIONALLICENCE)springer-10.1007/BF01237683 Mangel Marc Section of Evolution and Ecology, University of California, 95616, Davis, CA, USA aut Life history invariants, age at maturity and the ferox trout [Elektronische Daten] [Marc Mangel] Summary: Data on brown trout in Norway and on Arctic char in Norway, Iceland, Greenland or Canada are used to make three points about life-history invariants. First, invariants constructed from adaptive programmes of development that are conditioned on growth and mortality rates are more complicated than those constructed solely on the basis of dimensional analysis, but are more consistent with the data. Second, if one allows the possibility of escaping a size ceiling (e.g. by switching from planktivory to piscivory) ‘ferox trout' — brown trout that are exceptionally large and long lived — are predicted with the theory only if mortality is size dependent and the growth rate on food sources with different asymptotic sizes differs. Third, a successful empirical approach for finding life-history invariants can be more fully understood as the result of adaptive programmes of development. Chapman & Hall, 1996 brown trout ( Salmo trutta ) nationallicence Arctic char ( Salvelinus alpinus ) nationallicence life history nationallicence optimality nationallicence ferox trout nationallicence Evolutionary Ecology Kluwer Academic Publishers 10/3(1996-05-01), 249-263 0269-7653 10:3<249 1996 10 10682 https://doi.org/10.1007/BF01237683 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01237683 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Mangel Marc Section of Evolution and Ecology, University of California, 95616, Davis, CA, USA aut NATIONALLICENCE 773 0- Evolutionary Ecology Kluwer Academic Publishers 10/3(1996-05-01), 249-263 0269-7653 10:3<249 1996 10 10682 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer