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McEachin S, Drury JP, Grether GF. Competitive Displacement and Agonistic Character Displacement, or the Ghost of Interference Competition. Am Nat 2024; 203:335-346. [PMID: 38358816 DOI: 10.1086/728671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2024]
Abstract
AbstractInterference competition can drive species apart in habitat use through competitive displacement in ecological time and agonistic character displacement (ACD) over evolutionary time. As predicted by ACD theory, sympatric species of rubyspot damselflies (Hetaerina spp.) that respond more aggressively to each other in staged encounters differ more in microhabitat use. However, the same pattern could arise from competitive displacement if dominant species actively exclude subordinate species from preferred microhabitats. The degree to which habitat partitioning is caused by competitive displacement can be assessed with removal experiments. We carried out removal experiments with three species pairs of rubyspot damselflies. With competitive displacement, removing dominant species should allow subordinate species to shift into the dominant species' microhabitat. Instead, we found that species-specific microhabitat use persisted after the experimental removals. Thus, the previously documented association between heterospecific aggression and microhabitat partitioning in this genus is most likely a product of divergence in habitat preferences caused by interference competition in the evolutionary past.
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2
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Patterson CW, Drury JP. Interspecific behavioural interference and range dynamics: current insights and future directions. Biol Rev Camb Philos Soc 2023; 98:2012-2027. [PMID: 37364865 DOI: 10.1111/brv.12993] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 06/08/2023] [Accepted: 06/12/2023] [Indexed: 06/28/2023]
Abstract
Novel biotic interactions in shifting communities play a key role in determining the ability of species' ranges to track suitable habitat. To date, the impact of biotic interactions on range dynamics have predominantly been studied in the context of interactions between different trophic levels or, to a lesser extent, exploitative competition between species of the same trophic level. Yet, both theory and a growing number of empirical studies show that interspecific behavioural interference, such as interspecific territorial and mating interactions, can slow down range expansions, preclude coexistence, or drive local extinction, even in the absence of resource competition. We conducted a systematic review of the current empirical research into the consequences of interspecific behavioural interference on range dynamics. Our findings demonstrate there is abundant evidence that behavioural interference by one species can impact the spatial distribution of another. Furthermore, we identify several gaps where more empirical work is needed to test predictions from theory robustly. Finally, we outline several avenues for future research, providing suggestions for how interspecific behavioural interference could be incorporated into existing scientific frameworks for understanding how biotic interactions influence range expansions, such as species distribution models, to build a stronger understanding of the potential consequences of behavioural interference on the outcome of future range dynamics.
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Affiliation(s)
| | - Jonathan P Drury
- Department of Biosciences, Durham University, Stockton Road, Durham, DH1 3LE, UK
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3
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Bird Communities in a Changing World: The Role of Interspecific Competition. DIVERSITY 2022. [DOI: 10.3390/d14100857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Significant changes in the environment have the potential to affect bird species abundance and distribution, both directly, through a modification of the landscape, habitats, and climate, and indirectly, through a modification of biotic interactions such as competitive interactions. Predicting and mitigating the consequences of global change thus requires not only a sound understanding of the role played by biotic interactions in current ecosystems, but also the recognition and study of the complex and intricate effects that result from the perturbation of these ecosystems. In this review, we emphasize the role of interspecific competition in bird communities by focusing on three main predictions derived from theoretical and empirical considerations. We provide numerous examples of population decline and displacement that appeared to be, at least in part, driven by competition, and were amplified by environmental changes associated with human activities. Beyond a shift in relative species abundance, we show that interspecific competition may have a negative impact on species richness, ecosystem services, and endangered species. Despite these findings, we argue that, in general, the role played by interspecific competition in current communities remains poorly understood due to methodological issues and the complexity of natural communities. Predicting the consequences of global change in these communities is further complicated by uncertainty regarding future environmental conditions and the speed and efficacy of plastic and evolutionary responses to fast-changing environments. Possible directions of future research are highlighted.
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4
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Grether GF, Okamoto KW. Eco‐evolutionary dynamics of interference competition. Ecol Lett 2022; 25:2167-2176. [DOI: 10.1111/ele.14091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 07/21/2022] [Accepted: 07/24/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Gregory F. Grether
- Department of Ecology and Evolutionary Biology University of California Los Angeles Los Angeles California USA
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5
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McFarlane SE, Ålund M, Sirkiä PM, Qvarnström A. Low Heritability but Significant Early Environmental Effects on Resting Metabolic Rate in a Wild Passerine. Am Nat 2021; 198:551-560. [PMID: 34559605 DOI: 10.1086/715842] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
AbstractPredicting the impact of climate change on biodiversity requires understanding the adaptation potential of wild organisms. Evolutionary responses depend on the additive genetic variation associated with the phenotypic traits targeted by selection. We combine 5 years of cross-fostering experiments, measurements of resting metabolic rate (RMR) on nearly 200 wild collared flycatcher (Ficedula albicollis) nestlings, and animal models using a 17-year pedigree to evaluate the potential for an evolutionary response to changing environmental conditions. Contrary to other avian studies, we find no significant heritability of whole-organism, mass-independent, or mass-specific RMR, but we report a strong effect of nest environment instead. We therefore conclude that variation in nestling RMR is explained by variation in the early-life environment provided by the parents. We discuss possible underlying specific parental effects and the importance of taking different mechanisms into account to understand how animals phenotypically adapt (or fail to adapt) to climate change.
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6
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7
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Kenyon HL, Martin PR. Experimental tests of selection against heterospecific aggression as a driver of avian colour pattern divergence. J Evol Biol 2021; 34:1110-1124. [PMID: 33949033 DOI: 10.1111/jeb.13798] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 04/19/2021] [Accepted: 04/26/2021] [Indexed: 11/30/2022]
Abstract
Signal divergence is thought to reduce the costs of co-occurrence for closely related species and may thereby be important in the generation and maintenance of new biodiversity. In birds, closely related, sympatric species are more divergent in their colour patterns than those that live apart, but the selective pressures driving sympatric divergence in colour pattern are not well-understood. Here, we conducted field experiments on naïve birds using spectrometer-matched, painted, 3D-printed models to test whether selection against heterospecific aggression might drive colour pattern divergence in the genus Poecile. We found that territorial male black-capped chickadees (P. atricapillus) are equally likely to attack sympatric and allopatric congeners, and wintering flocks are equally likely to visit feeders occupied by sympatric and allopatric congeners, despite sympatric congeners being more divergent in colour pattern. These results suggest that either the concerted evolution of additional traits (e.g. discrimination), or interactions in sympatry that promote learning, is required if colour pattern divergence among sympatric species is to reduce heterospecific aggression. Alternatively, colour pattern divergence among sympatric species may be caused by other selective pressures, such as selection against hybridization or habitat partitioning and secondary signal adaptation.
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Affiliation(s)
- Haley L Kenyon
- Department of Biology, Queen's University, Kingston, ON, Canada
| | - Paul R Martin
- Department of Biology, Queen's University, Kingston, ON, Canada
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8
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Vega ML, Fransson T, Kullberg C. The effects of four decades of climate change on the breeding ecology of an avian sentinel species across a 1,500-km latitudinal gradient are stronger at high latitudes. Ecol Evol 2021; 11:6233-6247. [PMID: 34141214 PMCID: PMC8207436 DOI: 10.1002/ece3.7459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 02/18/2021] [Accepted: 03/03/2021] [Indexed: 11/23/2022] Open
Abstract
Global warming affects breeding phenology of birds differentially with latitude, but there is contrasting evidence about how the changing climate influences the breeding of migrating songbirds at their northern breeding range. We investigate the effect of climate warming on breeding time and breeding success of European pied flycatchers Ficedula hypoleuca in Sweden during a period of 36 years using nest reports from bird ringing. To account for the latitudinal variation, we divided Sweden into three latitudinal bands (northern, intermediate, and southern). We applied a sliding window approach to find the most influential period and environment characteristics (temperature, vegetation greenness, and precipitation), using linear mixed models and model averaging. Our results show a long-term advancement of breeding time related to increasing spring temperature and vegetation greenness during a period before hatching. Northern breeders revealed a larger advancement over the years (8.3 days) compared with southern breeders (3.6 days). We observed a relatively stronger effect of temperature and greenness on breeding time in the north. Furthermore, northern birds showed an increase in breeding success over time, while birds breeding at southern and intermediate latitudes showed reduced breeding success in years with higher prehatching temperatures. Our findings with stronger environment effects on breeding time advancement in the north suggest that pied flycatchers are more responsive to weather cues at higher latitudes. Breeding time adjustment and, potentially, low competition help explain the higher long-term success observed in the north. Reduced breeding success at more southerly latitudes suggests an inability to match breeding time to very early and warm springs, a fate that with continued climate change could also be expected for pied flycatchers and other long-distance migrants at their very northern breeding range.
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Affiliation(s)
- Marta Lomas Vega
- Department of ZoologyStockholm UniversityStockholmSweden
- Bolin Centre for Climate ResearchStockholm UniversityStockholmSweden
| | - Thord Fransson
- Department of Environmental Research and MonitoringSwedish Museum of Natural HistoryStockholmSweden
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9
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Sirkiä PM, Qvarnström A. Adaptive coloration in pied flycatchers ( Ficedula hypoleuca)-The devil is in the detail. Ecol Evol 2021; 11:1501-1525. [PMID: 33613985 PMCID: PMC7882974 DOI: 10.1002/ece3.7048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 10/22/2020] [Accepted: 10/28/2020] [Indexed: 11/17/2022] Open
Abstract
Understanding the origin and persistence of phenotypic variation within and among populations is a major goal in evolutionary biology. However, the eagerness to find unadulterated explanatory models in combination with difficulties in publishing replicated studies may lead to severe underestimations of the complexity of selection patterns acting in nature. One striking example is variation in plumage coloration in birds, where the default adaptive explanation often is that brightly colored individuals signal superior quality across environmental conditions and therefore always should be favored by directional mate choice. Here, we review studies on the proximate determination and adaptive function of coloration traits in male pied flycatchers (Ficedula hypoleuca). From numerous studies, we can conclude that the dark male color phenotype is adapted to a typical northern climate and functions as a dominance signal in male-male competition over nesting sites, and that the browner phenotypes are favored by relaxed intraspecific competition with more dominant male collared flycatchers (Ficedula albicollis) in areas where the two species co-occur. However, the role of avoidance of hybridization in driving character displacement in plumage between these two species may not be as important as initially thought. The direction of female choice on male coloration in pied flycatchers is not simply as opposite in direction in sympatry and allopatry as traditionally expected, but varies also in relation to additional contexts such as climate variation. While some of the heterogeneity in the observed relationships between coloration and fitness probably indicate type 1 errors, we strongly argue that environmental heterogeneity and context-dependent selection play important roles in explaining plumage color variation in this species, which probably also is the case in many other species studied in less detail.
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Affiliation(s)
- Päivi M. Sirkiä
- Finnish Museum of Natural HistoryZoology UnitUniversity of HelsinkiHelsinkiFinland
- Department of Ecology and GeneticsAnimal EcologyUppsala UniversityUppsalaSweden
| | - Anna Qvarnström
- Department of Ecology and GeneticsAnimal EcologyUppsala UniversityUppsalaSweden
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10
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Kyogoku D, Kokko H. Species coexist more easily if reinforcement is based on habitat preferences than on species recognition. J Anim Ecol 2020; 89:2605-2616. [PMID: 32799334 DOI: 10.1111/1365-2656.13321] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 06/30/2020] [Indexed: 11/28/2022]
Abstract
Maladaptive hybridization selects for prezygotic isolation, a process known as reinforcement. Reinforcement reduces gene flow and contributes to the final stage of speciation. Ecologically, however, coexistence of the incipient species is difficult if they initially use identical resources. Habitat segregation offers an alternative to species discrimination as a way to reduce gene flow: production of unfit hybrids is reduced if mate encounters become rare due to differing habitat choice. Using a modelling approach, we show that hybridization avoidance alone can select for habitat specialization, even if neither of the species is intrinsically better at using a specific niche. While habitat segregation and species discrimination both reduce the risk of producing unfit hybrids, these two isolation mechanisms differ from each other with respect to their effects on resource competition. Our model shows that, as a consequence of such differences, reinforcement evolves much more easily if hybridization is avoided based on habitat segregation than if the mechanism involves species recognition (mate choice traits). We also examine the outcomes when both isolation mechanisms evolve jointly. The establishment of one isolation mechanism a priori weakens selection for the other. However, an asymmetry persists here too. The net effect of habitat segregation on species discrimination was typically facilitative, but not vice versa. This asymmetry arises because habitat segregation, by enhancing coexistence, secures time for the subsequent evolution of species discrimination in a mate choice context (still relevant if habitat use is not perfectly segregated). Species discrimination does not have such a stabilizing effect on coexistence. Our results emphasize the importance of habitat segregation in reinforcement and offer a way to interpret findings where closely related taxa show similar performance on different resources or in different habitats. Studies of ecological generalization and specialization should therefore take into account that niche differences can be initiated and/or maintained by hybridization avoidance.
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Affiliation(s)
- Daisuke Kyogoku
- Department of Science and Technology, Ryukoku University, Otsu, Japan.,Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Hanna Kokko
- Department of Evolutionary Biology and Environmental Studies, University of Zurich, Zurich, Switzerland
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11
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Koski TM, Sirkiä PM, McFarlane SE, Ålund M, Qvarnström A. Differences in incubation behaviour and niche separation of two competing flycatcher species. Behav Ecol Sociobiol 2020; 74:105. [PMID: 32801426 PMCID: PMC7410113 DOI: 10.1007/s00265-020-02883-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Revised: 07/12/2020] [Accepted: 07/16/2020] [Indexed: 11/25/2022]
Abstract
Abstract Food availability sets the stage for incubation behaviour of a female bird and thereby indirectly determines the nest temperature, which in turn affects development and metabolism of avian embryos. Changes in development and metabolism in turn are known to influence offspring’s ability to adjust to environmental changes later in life. However, few studies have investigated the role of interspecific differences in incubation behaviour in relation to niche separation between competing sibling species. We studied the effects of habitat quality (in terms of caterpillar availability) on incubation behaviour of two ecologically similar and closely related species, collared and pied flycatchers (Ficedula albicollis and F. hypoleuca), in their hybrid zone on the island of Öland, Sweden. Even though both species prefer caterpillar-rich deciduous forests as nesting sites, collared flycatchers, whose nestlings have higher energetic demands, are able to nest only in deciduous forests, whereas pied flycatchers have more flexible habitat requirements. Overall, higher food availability was associated with increased nest attendance, higher incubation temperature and a lower number of foraging trips across species. In addition, collared flycatchers had more frequent and shorter foraging trips across habitat types, allocated more heat to eggs and therefore maintained higher nest temperatures compared to pied flycatchers. We argue that the higher heat allocation or the need to maintain a higher nest temperature for embryo development may constrain collared flycatchers to focus on relatively more profitable prey. Our results highlight the importance of considering incubation behaviour in the context of understanding species differences in niche use. Significance statement Niche separation plays an important role in mitigating effects of competition between closely related species. Whether species differences in incubation behaviour relate to differences in niche use remains unknown. We compared incubation behaviour of two sympatric flycatcher species that differ in sensitivity to food availability. The competitively more dominant and larger species, the collared flycatcher, whose nestlings are more sensitive to food shortages, made more frequent foraging trips but allocated more heat to eggs, leading to higher nest temperature despite lower nest attendance, compared to pied flycatchers. These interspecific differences may be a result of differences in embryo sensitivity or female physiology and contribute to the niche separation between the species, which in turn can facilitate coexistence. Electronic supplementary material The online version of this article (10.1007/s00265-020-02883-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Tuuli-Marjaana Koski
- Department of Biology and Biodiversity Unit, University of Turku, FI-20014 Turku, Finland
- Integrated Plant Protection Unit, Department of Plant Protection Biology, Swedish University of Agricultural Sciences, SE-230 53, Alnarp, Sweden
| | - Päivi M. Sirkiä
- Department of Biology and Biodiversity Unit, University of Turku, FI-20014 Turku, Finland
- Finnish Museum of Natural History, Zoology Unit, University of Helsinki, P.O. Box 17, FI-00014 Helsinki, Finland
| | - S. Eryn McFarlane
- Institute of Evolutionary Biology, University of Edinburgh, Charlotte Auerbach Road, Edinburgh, EH9 3FL UK
- Biological Sciences, Lund University, Sölvegatan 37, SE-223 62 Lund, Sweden
| | - Murielle Ålund
- Department of Integrative Biology, Michigan State University, 288 Farm Lane, East-, Lansing, 48824 USA
| | - Anna Qvarnström
- Animal Ecology, Department of Ecology and Genetics, Uppsala University, Norbyvägen 18d, SE-752 36 Uppsala, Sweden
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12
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Kyogoku D, Wheatcroft D. Heterospecific mating interactions as an interface between ecology and evolution. J Evol Biol 2020; 33:1330-1344. [PMID: 32762053 DOI: 10.1111/jeb.13687] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 07/21/2020] [Indexed: 12/25/2022]
Abstract
Reproductive interference (costly interspecific sexual interactions) is well-understood to promote divergence in mating-relevant traits (i.e. reproductive character displacement: RCD), but it can also reduce population growth, eventually leading to local extinction of one of the species. The ecological and evolutionary processes driven by reproductive interference can interact with each other. These interactions are likely to influence whether the outcome is coexistence or extinction, but remain little studied. In this paper, we first develop an eco-evolutionary perspective on reproductive interference by integrating ecological and evolutionary processes in a common framework. We also present a simple model to demonstrate the eco-evolutionary dynamics of reproductive interference. We then identify a number of factors that are likely to influence the relative likelihoods of extinction or RCD. We discuss particularly relevant factors by classifying them into four categories: the nature of the traits responding to selection, the mechanisms determining the expression of these traits, mechanisms of reproductive interference and the ecological background. We highlight previously underappreciated ways in which these factors may influence the relative likelihoods of RCD and local extinction. By doing so, we also identify questions and future directions that will increase our holistic understanding of the outcomes of reproductive interference.
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13
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Sottas C, Reif J, Kreisinger J, Schmiedová L, Sam K, Osiejuk TS, Reifová R. Tracing the early steps of competition-driven eco-morphological divergence in two sister species of passerines. Evol Ecol 2020. [DOI: 10.1007/s10682-020-10050-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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15
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Lindsay WR, Andersson S, Bererhi B, Höglund J, Johnsen A, Kvarnemo C, Leder EH, Lifjeld JT, Ninnes CE, Olsson M, Parker GA, Pizzari T, Qvarnström A, Safran RJ, Svensson O, Edwards SV. Endless forms of sexual selection. PeerJ 2019; 7:e7988. [PMID: 31720113 PMCID: PMC6839514 DOI: 10.7717/peerj.7988] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 10/04/2019] [Indexed: 12/11/2022] Open
Abstract
In recent years, the field of sexual selection has exploded, with advances in theoretical and empirical research complementing each other in exciting ways. This perspective piece is the product of a "stock-taking" workshop on sexual selection and sexual conflict. Our aim is to identify and deliberate on outstanding questions and to stimulate discussion rather than provide a comprehensive overview of the entire field. These questions are organized into four thematic sections we deem essential to the field. First we focus on the evolution of mate choice and mating systems. Variation in mate quality can generate both competition and choice in the opposite sex, with implications for the evolution of mating systems. Limitations on mate choice may dictate the importance of direct vs. indirect benefits in mating decisions and consequently, mating systems, especially with regard to polyandry. Second, we focus on how sender and receiver mechanisms shape signal design. Mediation of honest signal content likely depends on integration of temporally variable social and physiological costs that are challenging to measure. We view the neuroethology of sensory and cognitive receiver biases as the main key to signal form and the 'aesthetic sense' proposed by Darwin. Since a receiver bias is sufficient to both initiate and drive ornament or armament exaggeration, without a genetically correlated or even coevolving receiver, this may be the appropriate 'null model' of sexual selection. Thirdly, we focus on the genetic architecture of sexually selected traits. Despite advances in modern molecular techniques, the number and identity of genes underlying performance, display and secondary sexual traits remains largely unknown. In-depth investigations into the genetic basis of sexual dimorphism in the context of long-term field studies will reveal constraints and trajectories of sexually selected trait evolution. Finally, we focus on sexual selection and conflict as drivers of speciation. Population divergence and speciation are often influenced by an interplay between sexual and natural selection. The extent to which sexual selection promotes or counteracts population divergence may vary depending on the genetic architecture of traits as well as the covariance between mating competition and local adaptation. Additionally, post-copulatory processes, such as selection against heterospecific sperm, may influence the importance of sexual selection in speciation. We propose that efforts to resolve these four themes can catalyze conceptual progress in the field of sexual selection, and we offer potential avenues of research to advance this progress.
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Affiliation(s)
- Willow R. Lindsay
- Department of Biological and Environmental Sciences, University of Gothenburg, Göteborg, Sweden
| | - Staffan Andersson
- Department of Biological and Environmental Sciences, University of Gothenburg, Göteborg, Sweden
| | - Badreddine Bererhi
- Department of Biological and Environmental Sciences, University of Gothenburg, Göteborg, Sweden
| | - Jacob Höglund
- Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden
| | - Arild Johnsen
- Natural History Museum, University of Oslo, Oslo, Norway
| | - Charlotta Kvarnemo
- Department of Biological and Environmental Sciences, University of Gothenburg, Göteborg, Sweden
| | - Erica H. Leder
- Natural History Museum, University of Oslo, Oslo, Norway
| | - Jan T. Lifjeld
- Natural History Museum, University of Oslo, Oslo, Norway
| | - Calum E. Ninnes
- Department of Biological and Environmental Sciences, University of Gothenburg, Göteborg, Sweden
- Department of Entomology and Nematology, University of Florida, Gainesville, FL, United States of America
| | - Mats Olsson
- Department of Biological and Environmental Sciences, University of Gothenburg, Göteborg, Sweden
| | - Geoff A. Parker
- Institute of Integrative Biology, University of Liverpool, Liverpool, United Kingdom
| | - Tommaso Pizzari
- Department of Zoology, Edward Grey Institute, University of Oxford, Oxford, United Kingdom
| | - Anna Qvarnström
- Department of Ecology and Genetics, Uppsala University, Uppsala, Sweden
| | - Rebecca J. Safran
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, United States of America
| | - Ola Svensson
- School of Natural Sciences, Technology and Environmental Studies, Södertörn University, Huddinge, Sweden
| | - Scott V. Edwards
- Department of Organismic and Evolutionary Biology and Museum of Comparative Zoology, Harvard University, Cambridge, MA, United States of America
- Gothenburg Centre for Advanced Studies in Science and Technology, Chalmers University of Technology, Göteborg, Sweden
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16
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Wang X, Que P, Heckel G, Hu J, Zhang X, Chiang CY, Zhang N, Huang Q, Liu S, Martinez J, Pagani-Núñez E, Dingle C, Leung YY, Székely T, Zhang Z, Liu Y. Genetic, phenotypic and ecological differentiation suggests incipient speciation in two Charadrius plovers along the Chinese coast. BMC Evol Biol 2019; 19:135. [PMID: 31248363 PMCID: PMC6598359 DOI: 10.1186/s12862-019-1449-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 05/29/2019] [Indexed: 02/01/2023] Open
Abstract
Background Speciation with gene flow is an alternative to the nascence of new taxa in strict allopatric separation. Indeed, many taxa have parapatric distributions at present. It is often unclear if these are secondary contacts, e.g. caused by past glaciation cycles or the manifestation of speciation with gene flow, which hampers our understanding of how different forces drive diversification. Here we studied genetic, phenotypic and ecological aspects of divergence in a pair of incipient shorebird species, the Kentish (Charadrius alexandrinus) and the White-faced Plovers (C. dealbatus), shorebirds with parapatric breeding ranges along the Chinese coast. We assessed divergence based on molecular markers with different modes of inheritance and quantified phenotypic and ecological divergence in aspects of morphometric, dietary and climatic niches. Results Our integrative analyses revealed small to moderate levels of genetic and phenotypic distinctiveness with symmetric gene flow across the contact area at the Chinese coast. The two species diverged approximately half a million years ago in dynamic isolation with secondary contact occurring due to cycling sea level changes between the Eastern and Southern China Sea in the mid-late Pleistocene. We found evidence of character displacement and ecological niche differentiation between the two species, invoking the role of selection in facilitating divergence despite gene flow. Conclusion These findings imply that ecology can indeed counter gene flow through divergent selection and thus contributes to incipient speciation in these plovers. Furthermore, our study highlights the importance of using integrative datasets to reveal the evolutionary history and assist the inference of mechanisms of speciation. Electronic supplementary material The online version of this article (10.1186/s12862-019-1449-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xuejing Wang
- State Key Laboratory of Biocontrol, Department of Ecology, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China.,Institute of Ecology and Evolution, University of Bern, Baltzerstrasse 6, 3012, Bern, Switzerland
| | - Pinjia Que
- Ministry of Education Key Laboratory for Biodiversity and Ecological Engineering, College of Life Sciences, Beijing Normal University, Beijing, 100875, China
| | - Gerald Heckel
- Institute of Ecology and Evolution, University of Bern, Baltzerstrasse 6, 3012, Bern, Switzerland.,Swiss Institute of Bioinformatics, Genopode, 1015, Lausanne, Switzerland
| | - Junhua Hu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041, China
| | - Xuecong Zhang
- State Key Laboratory of Biocontrol, Department of Ecology, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
| | - Chung-Yu Chiang
- Department of Environmental Science, Tunhai University, Taichun, Taiwan
| | - Nan Zhang
- State Key Laboratory of Biocontrol, Department of Ecology, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
| | - Qin Huang
- State Key Laboratory of Biocontrol, Department of Ecology, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
| | - Simin Liu
- State Key Laboratory of Biocontrol, Department of Ecology, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
| | | | - Emilio Pagani-Núñez
- State Key Laboratory of Biocontrol, Department of Ecology, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China
| | - Caroline Dingle
- School of Biological Sciences, The University of Hong Kong, Hong Kong, SAR, China
| | - Yu Yan Leung
- School of Biological Sciences, The University of Hong Kong, Hong Kong, SAR, China
| | - Tamás Székely
- State Key Laboratory of Biocontrol, Department of Ecology, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China.,Milner Center for Evolution, Department of Biology and Biochemistry, University of Bath, Bath, BA1 7AY, UK
| | - Zhengwang Zhang
- Ministry of Education Key Laboratory for Biodiversity and Ecological Engineering, College of Life Sciences, Beijing Normal University, Beijing, 100875, China
| | - Yang Liu
- State Key Laboratory of Biocontrol, Department of Ecology, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China.
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17
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Scordato ESC. Male competition drives song divergence along an ecological gradient in an avian ring species. Evolution 2018; 72:2360-2377. [DOI: 10.1111/evo.13604] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 08/07/2018] [Accepted: 08/21/2018] [Indexed: 01/04/2023]
Affiliation(s)
- Elizabeth S. C. Scordato
- Committee on Evolutionary Biology The University of Chicago Chicago Illinois 60637
- Current Address: Department of Biological Sciences California State Polytechnic University Pomona California 91768
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18
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Ålund M, Persson Schmiterlöw S, McFarlane SE, Qvarnström A. Optimal sperm length for high siring success depends on forehead patch size in collared flycatchers. Behav Ecol 2018. [DOI: 10.1093/beheco/ary115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Murielle Ålund
- Department of Ecology and Genetics, Animal Ecology, Uppsala University, Norbyvägen, Uppsala, Sweden
| | - Siri Persson Schmiterlöw
- Department of Ecology and Genetics, Animal Ecology, Uppsala University, Norbyvägen, Uppsala, Sweden
| | - S Eryn McFarlane
- Department of Ecology and Genetics, Animal Ecology, Uppsala University, Norbyvägen, Uppsala, Sweden
| | - Anna Qvarnström
- Department of Ecology and Genetics, Animal Ecology, Uppsala University, Norbyvägen, Uppsala, Sweden
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19
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Appelgren ASC, Saladin V, Richner H, Doligez B, McCoy KD. Gene flow and adaptive potential in a generalist ectoparasite. BMC Evol Biol 2018; 18:99. [PMID: 29921216 PMCID: PMC6009953 DOI: 10.1186/s12862-018-1205-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 05/30/2018] [Indexed: 12/02/2022] Open
Abstract
Background In host-parasite systems, relative dispersal rates condition genetic novelty within populations and thus their adaptive potential. Knowledge of host and parasite dispersal rates can therefore help us to understand current interaction patterns in wild populations and why these patterns shift over time and space. For generalist parasites however, estimates of dispersal rates depend on both host range and the considered spatial scale. Here, we assess the relative contribution of these factors by studying the population genetic structure of a common avian ectoparasite, the hen flea Ceratophyllus gallinae, exploiting two hosts that are sympatric in our study population, the great tit Parus major and the collared flycatcher Ficedula albicollis. Previous experimental studies have indicated that the hen flea is both locally maladapted to great tit populations and composed of subpopulations specialized on the two host species, suggesting limited parasite dispersal in space and among hosts, and a potential interaction between these two structuring factors. Results C. gallinae fleas were sampled from old nests of the two passerine species in three replicate wood patches and were genotyped at microsatellite markers to assess population genetic structure at different scales (among individuals within a nest, among nests and between host species within a patch and among patches). As expected, significant structure was found at all spatial scales and between host species, supporting the hypothesis of limited dispersal in this parasite. Clustering analyses and estimates of relatedness further suggested that inbreeding regularly occurs within nests. Patterns of isolation by distance within wood patches indicated that flea dispersal likely occurs in a stepwise manner among neighboring nests. From these data, we estimated that gene flow in the hen flea is approximately half that previously described for its great tit hosts. Conclusion Our results fall in line with predictions based on observed patterns of adaptation in this host-parasite system, suggesting that parasite dispersal is limited and impacts its adaptive potential with respect to its hosts. More generally, this study sheds light on the complex interaction between parasite gene flow, local adaptation and host specialization within a single host-parasite system. Electronic supplementary material The online version of this article (10.1186/s12862-018-1205-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Anaïs S C Appelgren
- Evolutionary Ecology Laboratory, Institute of Ecology and Evolution, University of Bern, Baltzerstrasse 6, Bern, Switzerland. .,CNRS; Université de Lyon, F-69000, Lyon; Université Lyon 1; Department of Biometry and Evolutionary Biology, LBBE UMR 5558, Bâtiment Gregor Mendel, 43 boulevard du 11 novembre 1918, F-69622, Villeurbanne, France. .,Department of Biometry and Evolutionary Biology, LBBE UMR 5558, Bâtiment Gregor Mendel, Université Lyon 1, 43 boulevard du 11 novembre 1918, F-69622, Villeurbanne, France. .,Maladies Infectieuses & Vecteurs: Ecologie, Génétique, Evolution & Contrôle (MIVEGEC), Université de Montpellier - CNRS - IRD, Centre IRD, 911 avenue, Agropolis, BP 64501, F-34000, Montpellier, France.
| | - Verena Saladin
- Evolutionary Ecology Laboratory, Institute of Ecology and Evolution, University of Bern, Baltzerstrasse 6, Bern, Switzerland
| | - Heinz Richner
- Evolutionary Ecology Laboratory, Institute of Ecology and Evolution, University of Bern, Baltzerstrasse 6, Bern, Switzerland
| | - Blandine Doligez
- CNRS; Université de Lyon, F-69000, Lyon; Université Lyon 1; Department of Biometry and Evolutionary Biology, LBBE UMR 5558, Bâtiment Gregor Mendel, 43 boulevard du 11 novembre 1918, F-69622, Villeurbanne, France.,Department of Biometry and Evolutionary Biology, LBBE UMR 5558, Bâtiment Gregor Mendel, Université Lyon 1, 43 boulevard du 11 novembre 1918, F-69622, Villeurbanne, France.,Department of Ecology and Genetics/Animal Ecology, Evolutionary Biology Centre (EBC), University of Uppsala, Norbyvägen 18D, 752 36, Uppsala, Sweden
| | - Karen D McCoy
- Maladies Infectieuses & Vecteurs: Ecologie, Génétique, Evolution & Contrôle (MIVEGEC), Université de Montpellier - CNRS - IRD, Centre IRD, 911 avenue, Agropolis, BP 64501, F-34000, Montpellier, France
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20
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Sottas C, Reif J, Kuczyński L, Reifová R. Interspecific competition promotes habitat and morphological divergence in a secondary contact zone between two hybridizing songbirds. J Evol Biol 2018; 31:914-923. [PMID: 29603471 DOI: 10.1111/jeb.13275] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 03/22/2018] [Indexed: 01/25/2023]
Abstract
Interspecific competition is assumed to play an important role in the ecological differentiation of species and speciation. However, empirical evidence for competition's role in speciation remains surprisingly scarce. Here, we studied the role of interspecific competition in the ecological differentiation and speciation of two closely related songbird species, the Common Nightingale (Luscinia megarhynchos) and the Thrush Nightingale (Luscinia luscinia). Both species are insectivorous and ecologically very similar. They hybridize in a secondary contact zone, which is a mosaic of sites where both species co-occur (syntopy) and sites where only one species is present (allotopy). We analysed fine-scale habitat data for both species in both syntopic and allotopic sites and looked for associations between habitat use and bill morphology, which have been previously shown to be more divergent in sympatry than in allopatry. We found that the two nightingale species differ in habitat use in allotopic sites, where L. megarhynchos occurred in drier habitats and at slightly higher elevations, but not in syntopic sites. Birds from allotopic sites also showed higher interspecific divergence in relative bill size compared to birds from syntopic sites. Finally, we found an association between bill morphology and elevation. Our results are consistent with the view that interspecific competition in nightingales has resulted in partial habitat segregation in sympatry and that the habitat-specific food supply has in turn very likely led to bill size divergence. Such ecological divergence may enhance prezygotic as well as extrinsic postzygotic isolation and thus accelerate the completion of the speciation process.
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Affiliation(s)
- Camille Sottas
- Department of Zoology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Jiří Reif
- Institute for Environmental Studies, Faculty of Science, Charles University, Prague, Czech Republic.,Department of Zoology and Laboratory of Ornithology, Faculty of Science, Palacký University in Olomouc, Olomouc, Czech Republic
| | - Lechosław Kuczyński
- Population Ecology Lab, Institute of Environmental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Radka Reifová
- Department of Zoology, Faculty of Science, Charles University, Prague, Czech Republic
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21
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McFarlane SE, Ålund M, Sirkiä PM, Qvarnström A. Difference in plasticity of resting metabolic rate - the proximate explanation to different niche breadth in sympatric Ficedula flycatchers. Ecol Evol 2018; 8:4575-4586. [PMID: 29760898 PMCID: PMC5938467 DOI: 10.1002/ece3.3987] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 01/24/2018] [Accepted: 02/09/2018] [Indexed: 12/11/2022] Open
Abstract
Variation in relative fitness of competing recently formed species across heterogeneous environments promotes coexistence. However, the physiological traits mediating such variation in relative fitness have rarely been identified. Resting metabolic rate (RMR) is tightly associated with life history strategies, thermoregulation, diet use, and inhabited latitude and could therefore moderate differences in fitness responses to fluctuations in local environments, particularly when species have adapted to different climates in allopatry. We work in a long‐term study of collared (Ficedula albicollis) and pied flycatchers (Ficedula hypoleuca) in a recent hybrid zone located on the Swedish island of Öland in the Baltic Sea. Here, we explore whether differences in RMR match changes in relative performance of growing flycatcher nestlings across environmental conditions using an experimental approach. The fitness of pied flycatchers has previously been shown to be less sensitive to the mismatch between the peak in food abundance and nestling growth among late breeders. Here, we find that pied flycatcher nestlings have lower RMR in response to higher ambient temperatures (associated with low food availability). We also find that experimentally relaxed nestling competition is associated with an increased RMR in this species. In contrast, collared flycatcher nestlings did not vary their RMR in response to these environmental factors. Our results suggest that a more flexible nestling RMR in pied flycatchers is responsible for the better adaptation of pied flycatchers to the typical seasonal changes in food availability experienced in this hybrid zone. Generally, subtle physiological differences that have evolved when species were in allopatry may play an important role to patterns of competition, coexistence, or displacements between closely related species in secondary contact.
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Affiliation(s)
- S Eryn McFarlane
- Animal Ecology/Ecology and Genetics Evolutionary Biology Centre Uppsala University Uppsala Sweden.,Present address: Institute of Evolutionary Biology University of Edinburgh Edinburgh UK
| | - Murielle Ålund
- Animal Ecology/Ecology and Genetics Evolutionary Biology Centre Uppsala University Uppsala Sweden
| | - Päivi M Sirkiä
- Finnish Museum of Natural History Zoology Unit University of Helsinki Helsinki Finland.,Section of Ecology Department of Biology University of Turku Turku Finland
| | - Anna Qvarnström
- Animal Ecology/Ecology and Genetics Evolutionary Biology Centre Uppsala University Uppsala Sweden
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22
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Reif J, Reifová R, Skoracka A, Kuczyński L. Competition-driven niche segregation on a landscape scale: Evidence for escaping from syntopy towards allotopy in two coexisting sibling passerine species. J Anim Ecol 2018; 87:774-789. [PMID: 29430650 DOI: 10.1111/1365-2656.12808] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 12/21/2017] [Indexed: 01/15/2023]
Abstract
The role of interspecific competition for generating patterns in species' distribution is hotly debated and studies taking into account processes occurring at both large and small spatial scales are almost missing. Theoretically, competition between species with overlapping niches should result in divergence of their niches in sympatry to reduce the costs of competition. Many species show a mosaic distribution within sympatric zones, with the syntopic sites occupied by both species, and allotopic sites where only one species occurs. It is unclear whether such mosaics arise as a consequence of competition-driven niche segregation or due to the decline of their abundances towards range edges driven by environmental gradients. If the interspecific competition matters, we should observe (1) a shift in habitat preferences of one or both species between syntopy and allotopy, and (2) between allopatry and allotopy. Moreover, (3) species should show greater divergence in their habitat preferences in allotopy than in allopatry where (4) no differences in habitat preferences may occur. Finally, (5) shifts should be generally greater in the competitively subordinate species than in the dominant species. We used a unique dataset on abundance of two closely related passerine species, the Common Nightingale (Luscinia megarhynchos) and the Thrush Nightingale (Luscinia luscinia), collected across their syntopy, allotopy and allopatry. The predictions were tested within a generalized mixed-effects modelling framework. After accounting for environmental gradients perpendicular to the species' contact zone, we found a strong support for all but one prediction. Habitat preferences of both species shifted markedly between syntopy and allotopy, as well as between allopatry and allotopy. Whereas the species preferred the same habitats in allopatry, their preferences became strikingly different in allotopy where the abundance of the Common Nightingale increased towards dry and warm sites with low coverage of pastures, while the abundance of the Thrush Nightingale showed exactly opposite trends. Fifth prediction was not supported. Our results indicate that the competition between closely related species can result in considerable changes in habitat use across their geographic ranges accompanied with divergence in their habitat preferences in sympatry. Here, the species "escape" from competition to allotopic sites covered by habitats avoided by the competitor. Therefore, we argue that the interspecific competition is an important driver of species' distribution at both large and small spatial scales.
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Affiliation(s)
- Jiří Reif
- Faculty of Science, Institute for Environmental Studies, Charles University, Prague, Czech Republic.,Department of Zoology and Laboratory of Ornithology, Faculty of Science, Palacky University, Olomouc, Czech Republic
| | - Radka Reifová
- Department of Zoology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Anna Skoracka
- Population Ecology Lab, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Lechosław Kuczyński
- Population Ecology Lab, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
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23
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Sirkiä PM, McFarlane SE, Jones W, Wheatcroft D, Ålund M, Rybinski J, Qvarnström A. Climate‐driven build‐up of temporal isolation within a recently formed avian hybrid zone. Evolution 2018; 72:363-374. [DOI: 10.1111/evo.13404] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 11/16/2017] [Accepted: 11/19/2017] [Indexed: 01/11/2023]
Affiliation(s)
- Päivi M. Sirkiä
- Animal EcologyDepartment of Ecology and Genetics Norbyvägen 18d SE‐752 36 Uppsala Sweden
- Finnish Museum of Natural History, Zoology UnitUniversity of Helsinki Helsinki Finland
| | - S. Eryn McFarlane
- Animal EcologyDepartment of Ecology and Genetics Norbyvägen 18d SE‐752 36 Uppsala Sweden
| | - William Jones
- Animal EcologyDepartment of Ecology and Genetics Norbyvägen 18d SE‐752 36 Uppsala Sweden
| | - David Wheatcroft
- Animal EcologyDepartment of Ecology and Genetics Norbyvägen 18d SE‐752 36 Uppsala Sweden
| | - Murielle Ålund
- Animal EcologyDepartment of Ecology and Genetics Norbyvägen 18d SE‐752 36 Uppsala Sweden
| | - Jakub Rybinski
- Animal EcologyDepartment of Ecology and Genetics Norbyvägen 18d SE‐752 36 Uppsala Sweden
| | - Anna Qvarnström
- Animal EcologyDepartment of Ecology and Genetics Norbyvägen 18d SE‐752 36 Uppsala Sweden
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24
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Grether GF, Peiman KS, Tobias JA, Robinson BW. Causes and Consequences of Behavioral Interference between Species. Trends Ecol Evol 2017; 32:760-772. [PMID: 28797610 DOI: 10.1016/j.tree.2017.07.004] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2017] [Revised: 07/10/2017] [Accepted: 07/18/2017] [Indexed: 11/18/2022]
Abstract
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.
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Affiliation(s)
- Gregory F Grether
- Department of Ecology and Evolutionary Biology, University of California Los Angeles, CA 90095, USA.
| | - Kathryn S Peiman
- Department of Biology, Carleton University, Ottawa, ONT, K1S 5B6, Canada
| | - Joseph A Tobias
- Department of Life Sciences, Imperial College London, Silwood Park, Buckhurst Road, Ascot, SL5 7PY, UK
| | - Beren W Robinson
- Department of Integrative Biology, University of Guelph, ONT, N1G 2W1, Canada
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25
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Wheatcroft D, Qvarnström A. Genetic divergence of early song discrimination between two young songbird species. Nat Ecol Evol 2017. [DOI: 10.1038/s41559-017-0192] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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26
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Wheatcroft D, Qvarnström A. Reproductive character displacement of female, but not male song discrimination in an avian hybrid zone. Evolution 2017; 71:1776-1786. [DOI: 10.1111/evo.13267] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 04/20/2017] [Accepted: 05/02/2017] [Indexed: 12/12/2022]
Affiliation(s)
- David Wheatcroft
- Animal Ecology, Department of Ecology and Genetics Uppsala University Norbyvägen 18D 752 36 Sweden
| | - Anna Qvarnström
- Animal Ecology, Department of Ecology and Genetics Uppsala University Norbyvägen 18D 752 36 Sweden
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27
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Cramer ERA, Ålund M, McFarlane SE, Johnsen A, Qvarnström A. Females discriminate against heterospecific sperm in a natural hybrid zone. Evolution 2016; 70:1844-55. [DOI: 10.1111/evo.12986] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2016] [Revised: 05/22/2016] [Accepted: 06/01/2016] [Indexed: 01/15/2023]
Affiliation(s)
- Emily R. A. Cramer
- Natural History Museum; University of Oslo; 0318 Oslo Norway
- Current Address: Smithsonian Migratory Bird Center; PO Box 37012 MRC5503, Washington, District of Columbia 20008, and Cornell Lab of Ornithology Ithaca New York 14850
| | - Murielle Ålund
- Department of Ecology and Genetics; Animal Ecology, Uppsala University; Uppsala 75236 Sweden
| | - S. Eryn McFarlane
- Department of Ecology and Genetics; Animal Ecology, Uppsala University; Uppsala 75236 Sweden
| | - Arild Johnsen
- Natural History Museum; University of Oslo; 0318 Oslo Norway
| | - Anna Qvarnström
- Department of Ecology and Genetics; Animal Ecology, Uppsala University; Uppsala 75236 Sweden
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