caa a22 4500 477091075 CHVBK 20180405111515.0 cr unu---uuuuu 170330e19960501xx s 000 0 eng 10.1007/BF01237686 doi (NATIONALLICENCE)springer-10.1007/BF01237686 Optimality modelling and quantitative genetics as alternatives to study the evolution of foraging behaviours in insect herbivores [Elektronische Daten] [Yves Carrière, Bernard Roitberg] Summary: Although the evolution of large-scale dispersal has received considerable attention, we know very little about how natural selection influences foraging behaviours in herbivorous insects. Host-selection behaviours and within-habitat movements jointly determine foraging behaviours, since host selection affects the allocation of time spent on a particular host versus moving between these hosts. However, host selection is generally a labile trait, whose expression is influenced by the physiological state of the forager and hence, by characteristics of the habitat. We discuss how the quantitative genetic concepts can be used to study the evolution of such labile behaviours. Since host responses depend on the physiological state of the forager, it is argued that the state of the forager must be explicitly considered when estimating the additive genetic basis of host-selection behaviours. The lability of foraging behaviours increases the difficulty of measuring the fitness consequence of variation in the foraging phenotype in specific habitats. Therefore, it may be difficult to rely exclusively on quantitative genetic methods to test hypotheses about adaptive change in foraging behaviours across different habitats. We provide a novel approach based on optimality modelling to calculate the fitness consequence of variation in the foraging phenotype across different habitats. This method, in conjunction with quantitative genetics, can be used to test hypotheses concerning the evolution of foraging behaviours. Chapman & Hall, 1996 fitness function nationallicence gene flow nationallicence heterogeneous environments nationallicence host acceptance nationallicence host specificity nationallicence insect foraging behaviours nationallicence physiological state nationallicence rank order of preference nationallicence Carrière Yves Department of Biology, McGill University, 1205 Dr Penfield Avenue, H3A 1B1, Montreal, PQ, Canada aut Roitberg Bernard Department of Biological Sciences, Simon Fraser University, V5A 1S6, Burnaby, BC, Canada aut Evolutionary Ecology Kluwer Academic Publishers 10/3(1996-05-01), 289-305 0269-7653 10:3<289 1996 10 10682 https://doi.org/10.1007/BF01237686 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF01237686 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Carrière Yves Department of Biology, McGill University, 1205 Dr Penfield Avenue, H3A 1B1, Montreal, PQ, Canada aut NATIONALLICENCE 700 1- Roitberg Bernard Department of Biological Sciences, Simon Fraser University, V5A 1S6, Burnaby, BC, Canada aut NATIONALLICENCE 773 0- Evolutionary Ecology Kluwer Academic Publishers 10/3(1996-05-01), 289-305 0269-7653 10:3<289 1996 10 10682 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer