Competition-driven build-up of habitat isolation and selection favoring modified dispersal patterns in a young avian hybrid zone

Rybinski, Jakub; Sirkiä, Päivi M.; McFarlane, S. Eryn; Vallin, Niclas; Wheatcroft, David; Ålund, Murielle; Qvarnström, Anna

doi:10.1111/evo.13019

Cited by 32 publications

(58 citation statements)

References 63 publications

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“…During the period of secondary contact between the two flycatcher species in Öland, pied flycatchers have been progressively expelled into poorer quality habitats (Rybinski et al. ), which has resulted in increased temporal segregation, due to differences in optimal timing of breeding between habitats (Vallin et al. ).…”

Section: Discussionmentioning

confidence: 99%

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Climate‐driven build‐up of temporal isolation within a recently formed avian hybrid zone

Sirkiä

McFarlane²,

Jones³

et al. 2018

Evolution

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Divergence in the onset of reproduction can act as an important source of reproductive isolation (i.e., allochronic isolation) between co-occurring young species, but evidence for the evolutionary processes leading to such divergence is often indirect. While advancing spring seasons strongly affect the onset of reproduction in many taxa, it remains largely unexplored whether contemporary spring advancement directly affects allochronic isolation between young species. We examined how increasing spring temperatures affected onset of reproduction and thereby hybridization between pied and collared flycatchers (Ficedula spp.) across habitat types in a young secondary contact zone. We found that both species have advanced their timing of breeding in 14 years. However, selection on pied flycatchers to breed earlier was weaker, resulting in a slower response to advancing springs compared to collared flycatchers and thereby build-up of allochronic isolation between the species. We argue that a preadaptation to a broader niche use (diet) of pied flycatchers explains the slower response to raising spring temperature, but that reduced risk to hybridize may contribute to further divergence in the onset of breeding in the future. Our results show that minor differences in the response to environmental change of co-occurring closely related species can quickly cause allochronic isolation.

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Section: Discussionmentioning

confidence: 99%

“…; Rybinski et al. ). Early breeding in synchronization with the food peak is therefore relatively more important in the broad‐leaved caterpillar rich habitats (e.g., Both and Visser ; Burger et al.…”

Section: Methodsmentioning

confidence: 97%

Climate‐driven build‐up of temporal isolation within a recently formed avian hybrid zone

Sirkiä

McFarlane²,

Jones³

et al. 2018

Evolution

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Section: Behavioral Interference In Competition Experimentsmentioning

confidence: 99%

“…Some of the best-studied cases involve species that are currently expanding their range and displacing a congener [13][14][15][16]. A growing body of evidence suggests that behavioral interference also places constraints on geographical ranges and population sizes, for example in altitudinal and latitudinal replacement zones [17][18][19].…”

Section: Trendsmentioning

confidence: 99%

“…Aggressive interference in conjunction with habitat changes appears to account for the cyclical replacement of mountain bluebirds (Sialia currucoides) by western bluebirds (Sialia mexicana) in the northwestern USA [15]. Likewise, aggressive and reproductive interference combined with climate change appear to be driving the replacement of pied flycatchers (Ficedula hypoleuca) by collared flycatchers (Ficedula albicollis) on the Swedish Island of Öland [16,48].Species replacements can also be affected by how standing behavioral variation within the invading population is spatially structured [15,[50][51][52]. For example, male western bluebirds at the invasion front are more aggressive than those in the resident population [15].…”

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Causes and Consequences of Behavioral Interference between Species

Grether

Peiman

Tobias

et al. 2017

Trends in Ecology & Evolution

133

162

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Behavioral interference between species, such as territorial aggression, courtship, and mating, is widespread in animals. While aggressive and reproductive forms of interspecific interference have generally been studied separately, their many parallels and connections warrant a unified conceptual approach. Substantial evidence exists that aggressive and reproductive interference have pervasive effects on species coexistence, range limits, and evolutionary processes, including divergent and convergent forms of character displacement. Alien species invasions and climate change-induced range shifts result in novel interspecific interactions, heightening the importance of predicting the consequences of species interactions, and behavioral interference is a fundamental but neglected part of the equation. Here, we outline priorities for further theoretical and empirical research on the ecological and evolutionary consequences of behavioral interference. Interspecific Aggression and Reproductive InterferenceFew subjects in animal behavior have attracted more attention than aggression and sex, yet research tends to stop at species boundaries even when the behaviors themselves do not. Aggressive and sexual interactions between species are surprisingly common and share many parallels in their causes and ecological and evolutionary effects [1][2][3][4][5][6]. Both types of behavioral interference (Box 1) have been hypothesized to: (i) arise as a byproduct of intraspecific interactions (Box 2); (ii) cause local extinction as well as temporal and spatial habitat partitioning; (iii) prevent species from coexisting that otherwise would be expected to coexist; (iv) enable coexistence between species that otherwise would not be expected to coexist; (v) promote or prevent species range shifts and the spread of invasive species; (vi) cause sympatric species to diverge or converge through character displacement processes; (vii) cause populations within a species to diverge from each other due to character displacement in areas of sympatry; and (viii) contribute to reproductive isolation and speciation ( Figure 1).Despite their connections, aggressive interference and reproductive interference (see Glossary) have largely been studied by different researchers in relation to different theoretical frameworks [2,4,7] and in different study systems [3], even though many closely related species interfere with each other in both ways (see Table S1 in [8]). We do not believe that these two categories of interspecific interactions should be synonymized, because this would obscure important differences between them. Instead, we propose that their similarities and interrelationships merit a common conceptual framework, which we introduce here ( Figure 1). TrendsAggressive and reproductive forms of behavioral interference between species are widespread in animals and share many parallels in their underlying causes and their ecological and evolutionary effects.Behavioral interference can determine whether species coexist and, thus, affects speci...

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When does reproductive interference occur? Predictions and data

Kyogoku

2020

Population Ecology

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Reproductive interference is interspecific sexual interactions that are costly to at least one species involved. Although many studies have reported a substantial fitness cost associated with reproductive interference, suggesting its ecological significance, others have not observed reproductive interference in study species. Reproductive interference that incurs a large fitness cost is more likely to occur during secondary contacts than between long‐coexisting species. I first explain the rationale underlying this prediction using existing literature. Next, I present a conceptual framework to classify pairs of interacting species into one of four states, defined by the ecological and evolutionary stabilities of the species pairs. I discuss how the stability states of species pairs are likely to change over time, along with changes in the demographic and evolutionary role of reproductive interference. I then perform literature survey to test the prediction that reproductive interference should be more prevalent in secondary contact. Finally, I discuss the implications of the proposed conceptual framework and literature survey result.

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Competition-driven build-up of habitat isolation and selection favoring modified dispersal patterns in a young avian hybrid zone

Cited by 32 publications

References 63 publications

Climate‐driven build‐up of temporal isolation within a recently formed avian hybrid zone

Climate‐driven build‐up of temporal isolation within a recently formed avian hybrid zone

Causes and Consequences of Behavioral Interference between Species

When does reproductive interference occur? Predictions and data

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