Host Shifts, the Evolution of Communication, and Speciation in the Enchenopa binotata Species Complex of Treehoppers

Cocroft, Reginald B.; Rodrı́guez, Rafael L.; Hunt, Randy E.

doi:10.1525/california/9780520251328.003.0007

Cited by 53 publications

(176 citation statements)

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“…Measuring to what extent host plants are used as matesearching cues is then relevant to understanding how such evolutionary processes have been facilitated by this interaction. Host plant fidelity, or the tendency of phytophagous insects to mate and oviposit in their host plants, has facilitated ecological speciation in this group (Gilbert 1978;Feder 1998;Schluter 2001;Ores & Mallet 2002;Cocroft et al 2008), and could have led to the diversification of at least three genera of lycaenid butterflies (Pratt 1994;Nice & Shapiro 2001;Nice et al 2002;Forister 2005;Gompert et al 2006). Thus, much remains to be done to assess the incidence and impact of the use of plant cues in male mate-searching behaviour in butterflies, and evaluate its importance to their evolution and diversification.…”

Section: Discussionmentioning

confidence: 99%

“…Several studies have shown that adaptation to new hosts plants is important for butterfly diversification (Ehrlich & Raven 1964;Braby & Trueman 2006;Weingartner et al 2006;Pena & Wahlberg 2008). While this has traditionally been considered mainly a consequence of coevolution of larval feeding and plant chemical defences (Ehrlich & Raven 1964), it is possible that incorporating plant and plant habitat cues while searching for mates could also significantly influence the evolution of this group of insects (Gilbert 1978;Dennis & Shreeve 1988) as has been demonstrated in other phytophagous insects (Feder 1998;Funk 1998;Via 1999;Ores & Mallet 2002;Cocroft et al 2008). …”

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confidence: 99%

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Host plants and immatures as mate-searching cues in Heliconius butterflies

Estrada

Gilbert

2010

Animal Behaviour

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Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

Host plants and immatures as mate-searching cues in Heliconius butterflies

Estrada

Gilbert

2010

Animal Behaviour

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“…split-clutch) quantitative genetics design (figure 1; [24,25]). This manipulation mimics natural variation in Enchenopa, where social aggregations consist of varying mixtures of broods developing together [26,31]. These patterns are established as females aggregate during late summer and autumn to lay eggs on the stems of their host plants [26,32].…”

Section: (B) Manipulation Of the Social Environmentmentioning

confidence: 99%

“…This manipulation mimics natural variation in Enchenopa, where social aggregations consist of varying mixtures of broods developing together [26,31]. These patterns are established as females aggregate during late summer and autumn to lay eggs on the stems of their host plants [26,32]. Females die at the end of the autumn, and the following spring the nymph aggregations develop on the stems on which their eggs were laid [26].…”

Section: (B) Manipulation Of the Social Environmentmentioning

confidence: 99%

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Genetic variation in social influence on mate preferences

Rebar

Rodrı́guez

2013

Proc. R. Soc. B.

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Patterns of phenotypic variation arise in part from plasticity owing to social interactions, and these patterns contribute, in turn, to the form of selection that shapes the variation we observe in natural populations. This proximate-ultimate dynamic brings genetic variation in social environments to the forefront of evolutionary theory. However, the extent of this variation remains largely unknown. Here, we use a member of the Enchenopa binotata species complex of treehoppers (Hemiptera: Membracidae) to assess how mate preferences are influenced by genetic variation in the social environment. We used full-sibling split-families as 'treatment' social environments, and reared focal females alongside each treatment family, describing the mate preferences of the focal females. With this method, we detected substantial genetic variation in social influence on mate preferences. The mate preferences of focal females varied according to the treatment families along with which they grew up. We discuss the evolutionary implications of the presence of such genetic variation in social influence on mate preferences, including potential contributions to the maintenance of genetic variation, the promotion of divergence, and the adaptive evolution of social effects on fitness-related traits.

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Variation in signal–preference genetic correlations in Enchenopa treehoppers (Hemiptera: Membracidae)

Fowler‐Finn

Kilmer

Hallett

et al. 2015

Ecology and Evolution

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Fisherian selection is a within-population process that promotes signal–preference coevolution and speciation due to signal–preference genetic correlations. The importance of the contribution of Fisherian selection to speciation depends in part on the answer to two outstanding questions: What explains differences in the strength of signal–preference genetic correlations? And, how does the magnitude of within-species signal–preference covariation compare to species differences in signals and preferences? To address these questions, we tested for signal–preference genetic correlations in two members of the Enchenopa binotata complex, a clade of plant-feeding insects wherein speciation involves the colonization of novel host plants and signal–preference divergence. We used a full-sibling, split-family rearing experiment to estimate genetic correlations and to analyze the underlying patterns of variation in signals and preferences. Genetic correlations were weak or zero, but exploration of the underlying patterns of variation in signals and preferences revealed some full-sib families that varied by as much as 50% of the distance between similar species in the E. binotata complex. This result was stronger in the species that showed greater amounts of genetic variation in signals and preferences. We argue that some forms of weak signal–preference genetic correlation may have important evolutionary consequences.

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Host Shifts, the Evolution of Communication, and Speciation in the Enchenopa binotata Species Complex of Treehoppers

Cited by 53 publications

References 70 publications

Host plants and immatures as mate-searching cues in Heliconius butterflies

Host plants and immatures as mate-searching cues in Heliconius butterflies

Genetic variation in social influence on mate preferences

Variation in signal–preference genetic correlations in Enchenopa treehoppers (Hemiptera: Membracidae)

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