Mismatched partners that achieve postpairing behavioral similarity improve their reproductive success

Laubu, Chloé; Dechaume-Moncharmont, François-Xavier; Motreuil, Sébastien

doi:10.1126/sciadv.1501013

Cited by 74 publications

(68 citation statements)

References 49 publications

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“…;Laubu, Dechaume-Moncharmont, Motreuil, & Schweitzer, 2016;Ouyang, Muturi, Quetting, & Hau, 2013). Here again, a quantitative genetic approach can be used to estimate indirect effects between paired individuals(Dingemanse & Araya-ajoy, 2015;Moore, Brodie, & Wolf, 1997).…”

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A statistical methodology for estimating assortative mating for phenotypic traits that are labile or measured with error

et al. 2017

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Assortative mating in wild populations is commonly reported as the correlation between males’ and females’ phenotypes across mated pairs. Theories of partner selection and quantitative genetics assume that phenotypic resemblance of partners captures associations in “intrinsically determined” trait values. However, when considering traits with a repeatability below one (labile traits or traits measured with error), the correlation between phenotypes of paired individuals can arise from shared environmental effects on the phenotypes of paired individuals or correlated measurement error. We introduce statistical approaches to estimate assortative mating in labile traits or traits measured with error in the presence of shared environmental effects. These approaches include (1) the correlation between the mean phenotypes of males and females, (2) the correlation between randomized values of individuals and (3) the between‐pair correlation derived from a bivariate mixed model. We use simulations to show that the performance of these different approaches depends on the number of repeated measures within individuals or pairs, which is determined by study design, and rates of survival and divorce. We conclude that short‐term environmental effects on phenotypes of paired individuals likely inflate estimates of assortative mating when not statistically accounted for. Our approach allows investigation of this important issue in assortative mating studies for labile traits (e.g. behaviour, physiology, or metabolism) in both socially monogamous and other mating systems, and groupings of individuals outside a mating context.

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A statistical methodology for estimating assortative mating for phenotypic traits that are labile or measured with error

et al. 2017

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“…Ariyomo & Watt, 2013;. However, in studies that 78 found increased success of assortative pairs, personality data are often obtained post 79 pairing (Both et al, 2005; Harris et al, 2014;Laubu et al, 2016) not allowing to tease apart 80 whether mate choice was affected by individual personalities or whether behavioural 81 similarity was achieved post-pairing in highly successful pairs (Laubu et al, 2016). Indirect 82 evidence that dis-assortment for personality can sometimes be beneficial is provided by 83…”

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Different or alike? Female rainbow kribs choose males of similar consistency and dissimilar level of boldness

Scherer¹,

Kuhnhardt²,

Schuett³

2017

Animal Behaviour

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to different conditions. However, sheer costs of flexibility cannot explain the polymorphism 22 created by personality variation. In a correlative approach, we here tested whether mate 23 choice might act as a major driving force maintaining personality variation in the 24 monogamous, biparental rainbow krib, Pelvicachromis pulcher. We personality-typed all 25 males and females for their boldness (activity under simulated predation risk) and allowed 26 females to choose between two males that differed in their boldness (behavioural level and 27 consistency). Prior to the choice, females were allowed to observe both males, expressing 28 their natural boldness towards a video animated natural predator. Both sexes showed 29 personality differences in boldness over the short-and long-term. Furthermore, when 30 removing side-biased females, we found a dis-assortative mating preference for the 31 behavioural level and an assortative preference for behavioural consistency in boldness. 32Such preference patterns might facilitate effective parental role allocation during offspring 33 care and/or provide genetic benefits. Our results suggest that sexual selection plays an 34 important role in the evolution of personality differences. 35 36 Keywords: anti-predator behaviour, assortative, behavioural compatibility, cichlid, mate 37 choice, Pelvicachromis pulcher, personality, risk-taking, sexual selection, side bias 38 39 3 Individuals have to cope with a wide array of environmental challenges. Therefore, 40 flexibility in the expression of behavioural responses towards different and changing 41 conditions should be favoured by selection ). Yet, individuals often show 42 considerable consistent between-individual differences in behaviour over time and/or 43 contexts (Boissy, 1995). Such personality differences are common throughout the animal 44 kingdom (reviewed in Gosling, 2001; Kralj-Fišer et al., 2014) and have been shown for 45 various behavioural traits, such as activity pattern, aggressiveness, exploratory tendencies, 46 boldness and fearfulness (reviewed in Dall et al., 2004; Gosling, 2001;. 47Personality traits are moderately heritable (Ariyomo, Carter, et al., 2013; Patrick et al., 48 2013;Reif et al., 2003;van Oers et al., 2005) and have fitness consequences (e.g. Ariyomo et 49 al., 2012; Dingemanse et al., 2005;Smith et al., 2008), suggesting they are not merely non-50 adaptive noise that surrounds an adaptive optimum (Wilson, 1998). Nevertheless, 51 underlying mechanisms that generate and maintain behavioural polymorphism are largely 52 unclear and many aspects of the growing body of theoretical frameworks still remain to be 53 empirically tested (reviewed in e.g. Schuett et al., 2010;Wolf et al., 2010). 54 55 Recently, Schuett et al. (2010) pointed out that sexual selection may be important in 56 generating and maintaining personality variation though this possibility has rarely been 57 tested (but see e.g. Montiglio et al., 2016;. According to the proposed 58 framework , personalities are expected to p...

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“…In North Carolina, it is not necessarily the aggressive bluebird partners that have higher reproductive success in areas of high tree swallow competition, but rather it is those that pair with a behaviorally similar individual (i.e., both aggressive and nonaggressive partners have equal reproductive success in areas of high interspecific competition; Harris and Siefferman, 2014). However, whether mate behavior is consistent and influences mate selection (e.g., zebra finches, T. guttata, Schuett et al, 2011b) or whether behavior is flexible and behavioral similarity is achieved post pairing (Laubu et al, 2016) is unknown. For example, in western bluebirds, individuals modify their aggression to match their mate to a limited extent (Duckworth and Kruuk, 2009).…”

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Behavioral Differences among Eastern Bluebird Populations Could Be a Consequence of Tree Swallow Presence: A Pilot Study

2017

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Aggressive interference competition for limited resources is frequently observed among animals. However, these behavioral interactions within (intraspecific) and between (interspecific) species are costly as they can be energetically expensive and cause injury or death. To avoid these agonistic interactions, numerous species alter their behaviors and resource requirements. Spatial variation in nest site competition allows for investigation of concurrent variation in territorial defense behavior. Further, among species with bi-parental nest defense, behavioral similarity in territorial defense may benefit pairs. Here, we studied territorial aggression between two eastern bluebird (Sialia sialis) populations (North Carolina and Alabama, USA) that differ in avian community structure; those in North Carolina have recently begun to experience strong interspecific competition for nesting cavities by tree swallows (Tachycineta bicolor), a competitive pressure that is relatively new for North Carolina bluebirds (∼35-40 years) and is absent in Alabama populations. We found that bluebirds in North Carolina are more aggressive to simulated territorial intrusions compared to their Alabama counterparts. Behavioral similarity (here, in aggression) between partners is strong and similar in both populations. These results suggest that bluebirds in North Carolina may have to maintain higher baseline aggression during territory establishment and nest construction to co-occur with highly aggressive tree swallows, but that, in both populations, behavioral similarity between partners may be adaptive. Finally, we acknowledge the preliminary nature of this study and the need for expanding the behavioral studies to other sites in the southeastern United States. Greater regional coverage would exclude the possibility of alternative drivers of the observed behavioral differences between the North Carolina and Alabama populations.

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Mismatched partners that achieve postpairing behavioral similarity improve their reproductive success

Abstract: In the monogamous convict cichlid, mismatched partners become better parents by adjusting their behaviors to each other.

Cited by 74 publications

References 49 publications

A statistical methodology for estimating assortative mating for phenotypic traits that are labile or measured with error

A statistical methodology for estimating assortative mating for phenotypic traits that are labile or measured with error

Different or alike? Female rainbow kribs choose males of similar consistency and dissimilar level of boldness

Behavioral Differences among Eastern Bluebird Populations Could Be a Consequence of Tree Swallow Presence: A Pilot Study

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