The Evolution of Animal Personality Variation

Abstract

In many species of animals individual behaviour differs, yet is consistent over time and in an array of different environments; in other words, these animals display ‘personality’ variation. This may emerge not by chance, but, instead, is shaped by selective processes favouring individuals who display a differentiated behavioural phenotype. Indeed, personalities are known to affect important activities such as resource acquisition, survival and reproduction – which, cumulatively, impact an individual's fitness. We currently lack the insights and technology needed to fully characterise the genetics and physiology of most ecologically relevant behaviour; however, much can be gained by adopting an adaptive approach to consider the evolutionary processes that might have driven the emergence and maintenance of stable behavioural variation. Such an exercise will allow us to develop a priori hypotheses about the mechanisms underlying the behaviour, and to conduct powerful empirical studies examining how individualised behaviour impacts the life histories of a variety of species.

Key Concepts:

  • In many animal species, individuals differ predictably in their behaviour; this consistent behavioural variation is often referred to as ‘animal personalities’ (or ‘behavioural types’, ‘coping styles’, ‘temperament’ and ‘behavioural syndromes’).

  • Expression of personalities can have significant impacts on activities such as resource acquisition, survival and reproduction – and, therefore, may influence fitness.

  • A variety of factors may contribute for interindividual variation within populations; these include mutation, stochasticity, strong tradeoffs, spatiotemporal fluctuations, condition dependence and state dependence and negative frequency dependence.

  • Personalities can also be thought of as individual behavioural specialisation; this may arise as a result of life history tradeoffs, state‐dependent feedback, adaptive packaging of suites of traits and adaptive consistency.

  • Certain personalities may not be beneficial under some circumstances; however, when their effects are considered across the range of different circumstances that an animal will experience throughout its lifetime, these personalities will ultimately prove beneficial – otherwise they will not be maintained in the population.

  • The study of animal behaviour is useful for generating testable hypotheses about how genetics and physiology may underpin ecologically relevant behaviour, as well as for predicting the exact mechanisms that might link these traits.

Keywords: animal behaviour; personality; syndrome; temperament; variation; evolution; fitness; adaptation

Figure 1.

Species in which personality variation has been linked with fitness. Top row, from left to right: Great tit (Parus major), southern dumpling squid (Euprymna tasmanica), three‐spined stickleback (Gasterosteus aculeatus), bighorn sheep (Ovis canadensis). Bottom row, from left to right: zebra finch (Taeniopygia guttata), water strider (Heteroptera) and guppy (Poecilia reticulata). Images reproduced courtesy of Alastair Stewart, David Mitchell, Katie McGhee, Jim Cummins, Jan Stipala, Ingela Danielsson/Jens Rydell and Gregory Grether, respectively.

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References

Bell AM, Hankison SJ and Laskowski KL (2009) The repeatability of behaviour: a meta‐analysis. Animal Behavior 77(4): 771–783.

Bergstrom CT and Godfrey‐Smith P (1998) On the evolution of behavioural complexity in individuals and populations. Biology and Philosophy 13(2): 205–231.

Biro PA and Stamps JA (2008) Are animal personality traits linked to life‐history productivity? Trends in Ecology and Evolution 23(7): 361–368.

Botero CA, Rossman RJ, Caro LM et al. (2009) Syllable type and consistency is related to age, social status and reproductive success in the tropical mockingbird. Animal Behaviour 77(3): 701–706.

Chapman BB, Morrell LJ and Krause J (2010) Unpredictability in food supply during early life influences boldness in fish. Behavioral Ecology 21(3): 501–506.

Clark CW (1994) Antipredator behaviour and the asset‐protection principle. Behavioral Ecology 5(2): 159–170.

Dall SRX (2004) Behavioural biology: fortune favours bold and shy personalities. Current Biology 14: 470–472.

Dall SRX, Bell AM, Bolnick DI et al. (2012) An evolutionary ecology of individual differences. Ecology Letters 15(10): 1189–1198.

Dall SRX and Cuthill IC (1997) The information costs of generalism. Oikos 80(1): 197–202.

Dall SRX, Houston AI and McNamara JM (2004) The behavioural ecology of personality: consistent individual differences from an adaptive perspective. Ecology Letters 7(8): 734–739.

DeWitt TJ, Sih A and Wilson SJ (1998) Costs and limits of phenotypic plasticity. Trends in Ecology and Evolution 13(2): 77–81.

Dingemanse NJ, Both C, Drent PJ et al. (2004) Fitness consequences of avian personalities in a fluctuating environment. Proceedings of the Royal Society B: Biological Sciences 271(1541): 847–852.

Dingemanse NJ, Kazem AJN, Réale D et al. (2010) Behavioural reaction norms: animal personality meets individual plasticity. Trends in Ecology and Evolution 25(2): 81–89.

Duckworth RA (2010) Evolution of personality: developmental constraints on behavioural flexibility. Auk 127(4): 752–758.

Dukas R (2002) Behavioural and ecological consequences of limited attention. Philosophical Transactions of the Royal Society of London B 357(1427): 1539–1547.

Falconer DS and Mackay TFC (1996) Introduction to Quantitative Genetics, 4th edn. San Francisco: Benjamin Cummings.

Fisher RA (1930) The Genetical Theory of Natural Selection. Oxford: Clarendon Press.

Gilchrist GW and Kingsolver JG (2001) Is optimality over the hill? The fitness landscapes of idealized organisms. In: Orzack SH and Sober E (eds) Adaptationism and Optimality, pp. 219–241. Cambridge: Cambridge University Press.

Gosling SD and John OP (1999) Personality dimensions in non‐human animals: a cross‐species review. Current Directions in Psychologist Science 8(3): 69–75.

Gross MR (1996) Alternative reproductive strategies and tactics: diversity within sexes. Trends in Ecology and Evolution 11(2): 92–98.

Hammerstein P (1998) What is evolutionary game theory? In: Dugatkin LA and Reeve HK (eds) Game Theory and Animal Behaviour, pp. 3–15. New York: Oxford University Press.

Hopper KR, Rosenheim JA, Prout T et al. (2003) Within‐generation bet hedging: a seductive explanation? Oikos 101(1): 219–222.

Houston AI and McNamara JM (1999) Models of Adaptive Behaviour. Cambridge: Cambridge University Press.

Kauffman SA (1993) The Origins of Order: Self‐Organization and Selection in Evolution. Oxford: Oxford University Press.

Koolhaas JM, Korte SM, De Boer SF et al. (1999) Coping styles in animals: current status in behaviour and stress‐physiology. Neuroscience and Biobehavioral Reviews 23(7): 925–935.

Korsten P, Mueller JC, Hermannstädter C et al. (2010) Association between DRD4 gene polymorphism and personality variation in great tits: a test across four wild populations. Molecular Ecology 19(4): 832–843.

Lima SL and Dill LM (1990) Behavioural decisions made under the risk of predation: a review and prospectus. Canadian Journal of Zoology 68(4): 619–640.

Luttbeg B and Sih A (2010) Risk, resources and state‐dependent adaptive behavioural syndromes. Philosophical Transactions of the Royal Society B 365(1560): 3977–3990.

Mangel M and Stamps J (2001) Trade‐offs between growth and mortality and the maintenance of individual variation in growth. Evolutionary Ecology Research 3: 583–593.

Mariette MM and Griffith SC (2012) Nest visit synchrony is high and correlates with reproductive success in the wild Zebra finch Taeniopygia guttata. Journal of Avian Biology 43(2): 131–140.

Maynard Smith J and Price GR (1973) The logic of animal conflict. Nature 246(5427): 15–18.

McElreath R, Luttbeg B, Fogarty SP et al. (2007) Communication arising: evolution of animal personalities. Nature 450: e5–e6.

McNamara JM and Houston AI (2009) Integrating function and mechanism. Trends in Ecology and Evolution 24(12): 670–675.

McNamara JM, Stephens PA, Dall SRX et al. (2009) Evolution of trust and trustworthiness: social awareness favours personality differences. Proceedings of the Royal Society B: Biological Sciences 276(1657): 605–613.

Nettle D (2006) The evolution of personality variation in humans and other animals. American Psychologist 61(6): 622–631.

Pervin LA and John OP (1997) Personality: Theory and Research. New York: John Wiley.

Réale D, Gallant BY, Leblanc M et al. (2000) Consistency of temperament in bighorn ewes and correlates with behaviour and life history. Animal Behaviour 60(5): 589–597.

Réale D, Garant D, Humphries MM et al. (2010) Personality and the emergence of the pace‐of‐life syndrome concept at the population level. Philosophical Transactions of the Royal Society B: Biological Sciences 365(1560): 4051–4063.

Schuett W, Dall SRX and Royle NJ (2011) Pairs of zebra finches with similar “personalities” make better parents. Animal Behaviour 81(3): 609–618.

Schuett W, Tregenza T and Dall SRX (2010) Sexual selection and animal personality. Biological Reviews 85(2): 217–246.

Sih A, Bell AM, Johnson JC et al. (2004) Behavioral syndromes: an integrative overeview. Quarterly Review of Biology 79(3): 241–277.

Sih A, Kats LB and Maurer EF (2003) Behavioral correlates across situations and the evolution of antipredator behaviour in a sunfish‐salamander system. Animal Behaviour 65(1): 29–44.

Smith BR and Blumstein DT (2008) Fitness consequences of personality: a meta‐analysis. Behavioral Ecology 19(2): 448–455.

Stamps JA and Groothuis TGG (2010) Developmental perspectives on personality: implications for ecological and evolutionary studies of individual differences. Philosophical Transactions of The Royal Society B: Biological Sciences 365(1560): 4029–4041.

Tinbergen N (1963) On aims and methods in ethology. Zeitschrift für Tierpsychologie 20(4): 410–433.

West‐Eberhard MJ (2003) Developmental Plasticity and Evolution. New York: Oxford University Press.

Wilson DS (1998) Adaptive individual differences within single populations. Philosophical Transactions of the Royal Society of London, Series B 353(1366): 199–205.

Wolf M, Van Doorn GS, Leimar O et al. (2007) Life‐history trade‐offs favour the evolution of animal personalities. Nature 447: 581–584.

Wolf M, van Doorn GS and Weissing FJ (2008) Evolutionary emergence of responsive and unresponsive personalities. Proceedings of the National Academy of Sciences of the USA 105(41): 15825–15830.

Wolf M, van Doorn GS and Weissing FJ (2011) On the coevolution of social responsiveness and behavioural consistency. Proceedings of the Royal Society, Series B 278(1704): 440–448.

Further Reading

Áraujo MS, Layman CA and Bolnick DI (2011) The ecological causes of individual specialization. Ecology Letters 14: 948–958.

Bolnick DI, Svanbäck R, Fordyce JA et al. (2003) The ecology of individuals: incidence and implications of individual specialization. American Naturalist 161(1): S1–S28.

Chapple DG, Simmonds SM and Wong BBM (2012) Can behavioural and personality traits influence the success of unintentional species introductions? Trends in Ecology and Evolution 27: 57–64.

Clark AB and Ehlinger TJ (1987) Pattern and adaptation in individual behavioural differences. In: Bateson PPG and Klopfer PH (eds) Perspectives in Ethology, 1–47. New York: Plenum Press.

English S, Nakagawa S and Clutton‐Brock TH (2010) Consistent individual differences in cooperative behaviour in meerkats (Suricata suricatta). Journal of Evolutionary Biology 23: 1597–1604.

Johnstone RA and Manica A (2011) Evolution of personality differences in leadership. Proceedings of the National Academy of Sciences of the USA 108: 8373–8378.

Morand‐Ferron J, Wu GM and Giraldeau LA (2011) Persistent individual differences in tactic use in a producer‐scrounger game are group dependent. Animal Behaviour 82: 811–816.

Rands SA, Cowlishaw G, Pettifor RA et al. (2003) Spontaneous emergence of leaders and followers in foraging pairs. Nature 423(6938): 432–434.

Royle NJ, Schuett W and Dall SRX (2010) Behavioral consistency and the resolution of sexual conflict over parental investment. Behavioral Ecology 21: 1125–1130.

Sinn DL, Apiolaza LA and Moltschaniwskyj NA (2006) Heritability and fitness‐related consequences of squid personality traits. Journal of Evolutionary Biology 19(5): 1437–1447.

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Kight, Caitlin R, David, Morgan, and Dall, Sasha RX(May 2013) The Evolution of Animal Personality Variation. In: eLS. John Wiley & Sons Ltd, Chichester. http://www.els.net [doi: 10.1002/9780470015902.a0024662]