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Czocherová I, Svetlík J, Rubáčová L. Intra- and interspecific interactions in the two coexisting Locustella warblers revealed by song playback experiments. Behav Processes 2024; 216:104992. [PMID: 38253112 DOI: 10.1016/j.beproc.2024.104992] [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] [Received: 05/31/2022] [Revised: 04/13/2023] [Accepted: 01/17/2024] [Indexed: 01/24/2024]
Abstract
Males usually come into conflict due to competition for territories and females. However, interference competition can also occur between males of congeneric species when their ecological requirements are overlapping. Using acoustic playback experiments, we investigated male-male interactions within and between Grasshopper (Locustella naevia; GW) and River Warbler (L. fluviatilis; RW). Our objective was to evaluate the song and behavioural response of tested males of both species to conspecific song stimuli in order to compare this with the response to congeneric stimulus, based on which we could assess whether these two commonly co-existing species show interspecific territorialism. A total of nine GW and 11 RW males were tested in May and June 2019 in western Slovakia. The ability to differentiate between the heterospecific (control), congeneric, and conspecific stimuli was similar between the two species. Conspecific playback elicited the strongest non-vocal response and a significant change in vocalization. The GW males shortened the songs, while the RW males shortened the songs and also increased their syllable rate. The congeneric playback elicited a lower intensity of behavioural response than conspecific playback and no change in vocalization in either species. We conclude that interspecific interference competition between GW and RW is rather low, suggesting that the species' ecological requirements are separated, although these two congeneric species commonly share habitat.
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Affiliation(s)
- Ivana Czocherová
- Department of Zoology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 84215 Bratislava 4, Slovak Republic.
| | - Ján Svetlík
- Department of Ecology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 84215 Bratislava 4, Slovak Republic
| | - Lucia Rubáčová
- Department of Zoology, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynská dolina, Ilkovičova 6, 84215 Bratislava 4, Slovak Republic
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2
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Qvarnström A, Veen T, Husby A, Ålund M, Weissing FJ. Assortative Mating in an Ecological Context: Effects of Mate Choice Errors and Relative Species Abundance on the Frequency and Asymmetry of Hybridization. Am Nat 2023; 201:125-137. [PMID: 36524936 DOI: 10.1086/722156] [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: 11/03/2022]
Abstract
AbstractThe frequency and asymmetry of mixed-species mating set the initial stage for the ecological and evolutionary implications of hybridization. How such patterns of mixed-species mating, in turn, are influenced by the combination of mate choice errors and relative species abundance remains largely unknown. We develop a mathematical model that generates predictions for how relative species abundances and mate choice errors affect hybridization patterns. When mate choice errors are small (<5%), the highest frequency of hybridization occurs when one of the hybridizing species is at low abundance, but when mate choice errors are high (>5%), the highest hybridization frequency occurs when species occur in equal proportions. Furthermore, females of the less abundant species are overrepresented in mixed-species matings. We compare our theoretical predictions with empirical data on naturally hybridizing Ficedula flycatchers and find that hybridization is highest when the two species occur in equal abundance, implying rather high mate choice errors. We discuss ecological and evolutionary implications of our findings and encourage future work on hybrid zone dynamics that take demographic aspects, such as relative species abundance, into account.
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3
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Tan X, Lin A, Sun K, Jin L, Feng J. Greater Horseshoe Bats Recognize the Sex and Individual Identity of Conspecifics from Their Echolocation Calls. Animals (Basel) 2022; 12:ani12243490. [PMID: 36552410 PMCID: PMC9774574 DOI: 10.3390/ani12243490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 12/06/2022] [Accepted: 12/08/2022] [Indexed: 12/14/2022] Open
Abstract
The echolocation calls of bats are mainly used for navigation and foraging; however, they may also contain social information about the emitter and facilitate social interactions. In this study, we recorded the echolocation calls of greater horseshoe bats (Rhinolophus ferrumequinum) and analyzed the acoustic parameter differences between the sexes and among individuals. Then, we performed habituation-discrimination playback experiments to test whether greater horseshoe bats could recognize the sex and individual identity of conspecifics from their echolocation calls. The results showed that there were significant differences in the echolocation call parameters between sexes and among individuals. When we switched playback files from a habituated stimuli to a dishabituated stimuli, the tested bats exhibited obvious behavioral responses, including nodding, ear or body movement, and echolocation emission. The results showed that R. ferrumequinum can recognize the sex and individual identity of conspecifics from their echolocation calls alone, which indicates that the echolocation calls of R. ferrumequinum may have potential communication functions. The results of this study improve our understanding of the communication function of the echolocation calls of bats.
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Affiliation(s)
- Xiao Tan
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun 130000, China
| | - Aiqing Lin
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun 130000, China
| | - Keping Sun
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun 130000, China
| | - Longru Jin
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun 130000, China
- Jilin Provincial Engineering Laboratory of Avian Ecology and Conservation Genetics, Northeast Normal University, Changchun 130000, China
- Correspondence: (L.J.); (J.F.); Tel./Fax: +86-0431-85098097 (J.F.)
| | - Jiang Feng
- Jilin Provincial Key Laboratory of Animal Resource Conservation and Utilization, Northeast Normal University, Changchun 130000, China
- College of Life Science, Jilin Agricultural University, Changchun 130000, China
- Correspondence: (L.J.); (J.F.); Tel./Fax: +86-0431-85098097 (J.F.)
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4
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Species-specific song responses emerge as a by-product of tuning to the local dialect. Curr Biol 2022; 32:5153-5158.e5. [PMID: 36288731 DOI: 10.1016/j.cub.2022.09.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 07/08/2022] [Accepted: 09/28/2022] [Indexed: 11/06/2022]
Abstract
Oscine birds preferentially respond to certain sounds over others from an early age, which focuses subsequent learning onto sexually relevant songs.1,2,3 Songs vary both across species and, due to cultural evolution, among populations of the same species. As a result, early song responses are expected to be shaped by selection both to avoid the fitness costs of cross-species learning4 and to promote learning of population-typical songs.5 These sources of selection are not mutually exclusive but can result in distinct geographic patterns of song responses in juvenile birds: if the risks of interspecific mating are the main driver of early song discrimination, then discrimination should be strongest where closely related species co-occur.4 In contrast, if early discrimination primarily facilitates learning local songs, then it should be tuned to songs typical of the local dialect.5,6,7 Here, we experimentally assess the drivers of song discrimination in nestling pied flycatchers (Ficedula hypoleuca). We first demonstrate that early discrimination against the songs of the closely related collared flycatcher (F. albicollis) is not strongly affected by co-occurrence. Second, across six European populations, we show that nestlings' early song responses are tuned to their local song dialect and that responses to the songs of collared flycatchers are similarly weak as to those of other conspecific dialects. Taken together, these findings provide clear experimental support for the hypothesis that cultural evolution, in conjunction with associated learning predispositions, drives the emergence of pre-mating reproductive barriers.
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5
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Sangster G, Luksenburg JA, Päckert M, Roselaar CS, Irestedt M, Ericson PGP. Integrative taxonomy documents two additional cryptic
Erithacus
species on the Canary Islands (Aves). ZOOL SCR 2022. [DOI: 10.1111/zsc.12561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- George Sangster
- Naturalis Biodiversity Center Leiden The Netherlands
- Department of Bioinformatics and Genetics Swedish Museum of Natural History Stockholm Sweden
| | - Jolanda A. Luksenburg
- Institute of Environmental Sciences Leiden University Leiden The Netherlands
- Department of Environmental Science and Policy George Mason University Fairfax Virginia USA
| | - Martin Päckert
- Senckenberg Natural History Collections Dresden Dresden Germany
| | | | - Martin Irestedt
- Department of Bioinformatics and Genetics Swedish Museum of Natural History Stockholm Sweden
| | - Per G. P. Ericson
- Department of Bioinformatics and Genetics Swedish Museum of Natural History Stockholm Sweden
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6
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Chhaya V, Lahiri S, Jagan MA, Mohan R, Pathaw NA, Krishnan A. Community Bioacoustics: Studying Acoustic Community Structure for Ecological and Conservation Insights. Front Ecol Evol 2021. [DOI: 10.3389/fevo.2021.706445] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The diversity of animal acoustic signals has evolved due to multiple ecological processes, both biotic and abiotic. At the level of communities of signaling animals, these processes may lead to diverse outcomes, including partitioning of acoustic signals along multiple axes (divergent signal parameters, signaling locations, and timing). Acoustic data provides information on the organization, diversity and dynamics of an acoustic community, and thus enables study of ecological change and turnover in a non-intrusive way. In this review, we lay out how community bioacoustics (the study of acoustic community structure and dynamics), has value in ecological monitoring and conservation of diverse landscapes and taxa. First, we review the concepts of signal space, signal partitioning and their effects on the structure of acoustic communities. Next, we highlight how spatiotemporal ecological change is reflected in acoustic community structure, and the potential this presents in monitoring and conservation. As passive acoustic monitoring gains popularity worldwide, we propose that the analytical framework of community bioacoustics has promise in studying the response of entire suites of species (from insects to large whales) to rapid anthropogenic change.
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7
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8
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Mejías MA, Roncal J, Imfeld TS, Boisen S, Wilson DR. Relationships of song structure to phylogenetic history, habitat, and morphology in the vireos, greenlets, and allies (Passeriformes: Vireonidae). Evolution 2020; 74:2494-2511. [DOI: 10.1111/evo.14099] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2020] [Revised: 07/20/2020] [Accepted: 09/14/2020] [Indexed: 02/06/2023]
Affiliation(s)
- Miguel A. Mejías
- Department of Biology Memorial University of Newfoundland St. John's A1B 3X9 Canada
| | - Julissa Roncal
- Department of Biology Memorial University of Newfoundland St. John's A1B 3X9 Canada
| | - Tyler S. Imfeld
- Department of Ecology Evolution and Behavior University of Minnesota St. Paul MN 55108 USA
- Bell Museum University of Minnesota St. Paul MN 55108 USA
| | - Sander Boisen
- Department of Biology Memorial University of Newfoundland St. John's A1B 3X9 Canada
| | - David R. Wilson
- Department of Psychology Memorial University of Newfoundland St. John's A1B 3X9 Canada
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9
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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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10
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Two songbird species show subordinate responses to simulated territorial intrusions of an exotic competitor. Acta Ethol 2020. [DOI: 10.1007/s10211-020-00347-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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11
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Hudson EJ, Creanza N, Shizuka D. The Role of Nestling Acoustic Experience in Song Discrimination in a Sparrow. Front Ecol Evol 2020. [DOI: 10.3389/fevo.2020.00099] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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12
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13
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Rampant introgressive hybridization in Pogoniulus tinkerbirds (Piciformes: Lybiidae) despite millions of years of divergence. Biol J Linn Soc Lond 2019. [DOI: 10.1093/biolinnean/blz018] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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14
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Uy JAC, Irwin DE, Webster MS. Behavioral Isolation and Incipient Speciation in Birds. ANNUAL REVIEW OF ECOLOGY EVOLUTION AND SYSTEMATICS 2018. [DOI: 10.1146/annurev-ecolsys-110617-062646] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Behavioral changes, such as those involved in mating, foraging, and migration, can generate reproductive barriers between populations. Birds, in particular, are known for their great diversity in these behaviors, and so behavioral isolation is often proposed to be the major driver of speciation. Here, we review empirical evidence to evaluate the importance of behavioral isolation in the early stages of avian speciation. Experimentally measured mating preferences indicate that changes in mating behavior can result in premating barriers, with their strength depending on the extent of divergence in mating signals. Differences in migratory and foraging behavior also can play important roles in generating reproductive barriers in the early stages of speciation. However, because premating behavioral isolation is imperfect, extrinsic postzygotic barriers, in the form of selection against hybrids having intermediate phenotypes, also play an important role in avian diversification, especially in completing the speciation process.
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Affiliation(s)
- J. Albert C. Uy
- Department of Biology, University of Miami, Coral Gables, Florida 33146, USA
| | - Darren E. Irwin
- Department of Zoology, University of British Columbia, Vancouver, British Columbia V6T 1Z4, Canada
| | - Michael S. Webster
- Cornell Lab of Ornithology and Department of Neurobiology and Behavior, Cornell University, Ithaca, New York 14850, USA
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15
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Souriau A, Kohoutová H, Reif J, Vokurková J, Petrusek A, Reifová R, Petrusková T. Can mixed singing facilitate coexistence of closely related nightingale species? Behav Ecol 2018. [DOI: 10.1093/beheco/ary053] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Abel Souriau
- Department of Ecology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Hana Kohoutová
- 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
| | - Jana Vokurková
- Department of Ecology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Adam Petrusek
- Department of Ecology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Radka Reifová
- Department of Zoology, Faculty of Science, Charles University, Prague, Czech Republic
| | - Tereza Petrusková
- Department of Ecology, Faculty of Science, Charles University, Prague, Czech Republic
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16
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Wilkins MR, Scordato ESC, Semenov GA, Karaardiç H, Shizuka D, Rubtsov A, Pap PL, Shen SF, Safran RJ. Global song divergence in barn swallows (Hirundo rustica): exploring the roles of genetic, geographical and climatic distance in sympatry and allopatry. Biol J Linn Soc Lond 2018. [DOI: 10.1093/biolinnean/bly012] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Matthew R Wilkins
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, USA
- School of Biological Sciences, University of Nebraska-Lincoln, Lincoln, NE, USA
- Center for Science Outreach, Vanderbilt University, Nashville, TN, USA
| | - Elizabeth S C Scordato
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, USA
- Biological Sciences Department, California State Polytechnic University, Pomona, CA, USA
| | - Georgy A Semenov
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, USA
- Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ, USA
| | - Hakan Karaardiç
- Alanya Alaaddin Keykubat University, Education Faculty, Math and Science, Alanya, Turkey
| | - Daizaburo Shizuka
- School of Biological Sciences, University of Nebraska-Lincoln, Lincoln, NE, USA
| | | | - Peter L Pap
- Department of Taxonomy and Ecology, Babeş-Bolyai University, Cluj-Napoca, Romania
| | - Sheng-Feng Shen
- Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
| | - Rebecca J Safran
- Department of Ecology and Evolutionary Biology, University of Colorado, Boulder, CO, USA
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17
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Lipshutz SE. Interspecific competition, hybridization, and reproductive isolation in secondary contact: missing perspectives on males and females. Curr Zool 2018; 64:75-88. [PMID: 29492041 PMCID: PMC5809030 DOI: 10.1093/cz/zox060] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Accepted: 10/15/2017] [Indexed: 12/26/2022] Open
Abstract
Research on sexual selection and hybridization has focused on female mate choice and male-male competition. While the evolutionary outcomes of interspecific female preference have been well explored, we are now gaining a better understanding of the processes by which male-male competition between species in secondary contact promotes reproductive isolation versus hybridization. What is relatively unexplored is the interaction between female choice and male competition, as they can oppose one another or align with similar outcomes for reproductive isolation. The role of female-female competition in hybridization is also not well understood, but could operate similarly to male-male competition in polyandrous and other systems where costs to heterospecific mating are low for females. Reproductive competition between either sex of sympatric species can cause the divergence and/or convergence of sexual signals and recognition, which in turn influences the likelihood for interspecific mating. Future work on species interactions in secondary contact should test the relative influences of both mate choice and competition for mates on hybridization outcomes, and should not ignore the possibilities that females can compete over mating resources, and males can exercise mate choice.
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Affiliation(s)
- Sara E Lipshutz
- Department of Ecology and Evolutionary Biology, Division of Biology, University of Tennessee, Knoxville, Tennessee 37996, USA
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18
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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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19
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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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20
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Lipshutz SE, Overcast IA, Hickerson MJ, Brumfield RT, Derryberry EP. Behavioural response to song and genetic divergence in two subspecies of white‐crowned sparrows (
Zonotrichia leucophrys
). Mol Ecol 2017; 26:3011-3027. [DOI: 10.1111/mec.14002] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Revised: 12/06/2016] [Accepted: 12/08/2016] [Indexed: 01/03/2023]
Affiliation(s)
- Sara E. Lipshutz
- Department of Ecology and Evolutionary Biology Tulane University 400 Lindy Boggs New Orleans LA 70118 USA
| | - Isaac A. Overcast
- Subprogram in Ecology, Evolution and Behavior The Graduate Center City University of New York New York NY 10016 USA
| | - Michael J. Hickerson
- Subprogram in Ecology, Evolution and Behavior The Graduate Center City University of New York New York NY 10016 USA
- Department of Biology Marshak Science Building City College of New York Room 526, 160 Convent Avenue New York NY 10031 USA
- Division of Invertebrate Zoology The American Museum of Natural History Central Park West and 79th Street New York NY 10024 USA
| | - Robb T. Brumfield
- Museum of Natural Science and Department of Biological Sciences Louisiana State University Baton Rouge LA 70803 USA
| | - Elizabeth P. Derryberry
- Department of Ecology and Evolutionary Biology Tulane University 400 Lindy Boggs New Orleans LA 70118 USA
- Museum of Natural Science and Department of Biological Sciences Louisiana State University Baton Rouge LA 70803 USA
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21
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Kenyon HL, Alcaide M, Toews DPL, Irwin DE. Cultural isolation is greater than genetic isolation across an avian hybrid zone. J Evol Biol 2016; 30:81-95. [DOI: 10.1111/jeb.12989] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 10/05/2016] [Accepted: 10/06/2016] [Indexed: 11/30/2022]
Affiliation(s)
- H. L. Kenyon
- Department of Zoology and Biodiversity Research Centre; University of British Columbia; Vancouver BC Canada
| | - M. Alcaide
- Department of Zoology and Biodiversity Research Centre; University of British Columbia; Vancouver BC Canada
- Department of Evolutionary Ecology; Estación Biologica de Doñana (CSIC); Sevilla Spain
| | - D. P. L. Toews
- Department of Zoology and Biodiversity Research Centre; University of British Columbia; Vancouver BC Canada
| | - D. E. Irwin
- Department of Zoology and Biodiversity Research Centre; University of British Columbia; Vancouver BC Canada
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22
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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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23
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McEntee JP, Peñalba JV, Werema C, Mulungu E, Mbilinyi M, Moyer D, Hansen L, Fjeldså J, Bowie RCK. Social selection parapatry in Afrotropical sunbirds. Evolution 2016; 70:1307-21. [PMID: 27167078 DOI: 10.1111/evo.12950] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 04/18/2016] [Accepted: 04/30/2016] [Indexed: 01/01/2023]
Abstract
The extent of range overlap of incipient and recent species depends on the type and magnitude of phenotypic divergence that separates them, and the consequences of phenotypic divergence on their interactions. Signal divergence by social selection likely initiates many speciation events, but may yield niche-conserved lineages predisposed to limit each others' ranges via ecological competition. Here, we examine this neglected aspect of social selection speciation theory in relation to the discovery of a nonecotonal species border between sunbirds. We find that Nectarinia moreaui and Nectarinia fuelleborni meet in a ∼6 km wide contact zone, as estimated by molecular cline analysis. These species exploit similar bioclimatic niches, but sing highly divergent learned songs, consistent with divergence by social selection. Cline analyses suggest that within-species stabilizing social selection on song-learning predispositions maintains species differences in song despite both hybridization and cultural transmission. We conclude that ecological competition between moreaui and fuelleborni contributes to the stabilization of the species border, but that ecological competition acts in conjunction with reproductive interference. The evolutionary maintenance of learned song differences in a hybrid zone recommend this study system for future studies on the mechanisms of learned song divergence and its role in speciation.
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Affiliation(s)
- Jay P McEntee
- Museum of Vertebrate Zoology and Department of Integrative Biology, University of California, Berkeley, California, 94720. .,Current Address: Department of Biology, University of Florida, P. O. Box 118525, 220 Bartram Hall, Gainesville, Florida, 32611.
| | - Joshua V Peñalba
- Museum of Vertebrate Zoology and Department of Integrative Biology, University of California, Berkeley, California, 94720.,Current Address: Australian National University, Canberra
| | - Chacha Werema
- Department of Zoology and Wildlife Conservation, University of Dar-es-salaam, Dar-es-salaam, Tanzania
| | | | | | - David Moyer
- Field Museum of Natural History, Chicago, Illinois, 60605
| | - Louis Hansen
- Center for Macroecology, Evolution and Climate, University of Copenhagen, Denmark
| | - Jon Fjeldså
- Center for Macroecology, Evolution and Climate, University of Copenhagen, Denmark
| | - Rauri C K Bowie
- Museum of Vertebrate Zoology and Department of Integrative Biology, University of California, Berkeley, California, 94720
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Halfwerk W, Dingle C, Brinkhuizen DM, Poelstra JW, Komdeur J, Slabbekoorn H. Sharp acoustic boundaries across an altitudinal avian hybrid zone despite asymmetric introgression. J Evol Biol 2016; 29:1356-67. [PMID: 27037611 DOI: 10.1111/jeb.12876] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Revised: 03/29/2016] [Accepted: 03/30/2016] [Indexed: 11/30/2022]
Abstract
Birdsong is a sexually selected trait that could play an important evolutionary role when related taxa come into secondary contact. Many songbird species, however, learn their songs through copying one or more tutors, which complicates the evolutionary outcome of such contact. Two subspecies of a presumed vocal learner, the grey-breasted wood-wren (Henicorhina leucophrys), replace each other altitudinally across the western slope of the Ecuadorian Andes. These subspecies are morphologically very similar, but show striking differences in their song. We examined variation in acoustic traits and genetic composition across the altitudinal range covered by both subspecies and between two allopatric populations. The acoustic boundary between the subspecies was found to be highly abrupt across a narrow elevational range with virtually no evidence of song convergence. Mixed singing and use of hetero-subspecific song occurred in the contact zone and was biased towards the use of leucophrys song types. Hetero-subspecific song copying by hilaris and not by leucophrys reflected a previously found asymmetric pattern of response to song playback. Using amplified fragment length polymorphisms (AFLP) markers, we detected hybridization in the contact zone and asymmetric introgression in parapatric populations, with more leucophrys alleles present in hilaris populations than vice versa. This pattern may be a trail of introgression due to upslope displacement of leucophrys by hilaris. Our data suggest that song learning may impact speciation and hybridization in contrasting ways at different spatial scales: although learning may speed up population divergence in songs, thereby enhancing assortative mating and reducing gene flow, it may at a local level also lead to the copying of heterospecific songs, therefore allowing some level of hybridization and introgression.
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Affiliation(s)
- W Halfwerk
- Behavioural Biology, Institute of Biology (IBL), Leiden University, Leiden, the Netherlands.,Animal Ecology, Department of Ecological Science, VU University Amsterdam, Amsterdam, the Netherlands
| | - C Dingle
- Behavioural Ecology Group, Zoology Department, Cambridge University, Cambridge, UK.,Department of Earth Sciences, The University of Hong Kong, Hong Kong, Hong Kong
| | - D M Brinkhuizen
- Behavioural Biology, Institute of Biology (IBL), Leiden University, Leiden, the Netherlands.,Animal Ecology Group, Centre for Ecological and Evolutionary Studies, Groningen University, Haren, the Netherlands
| | - J W Poelstra
- Behavioural Biology, Institute of Biology (IBL), Leiden University, Leiden, the Netherlands.,Animal Ecology Group, Centre for Ecological and Evolutionary Studies, Groningen University, Haren, the Netherlands
| | - J Komdeur
- Behavioural and Physiological Ecology Group, Groningen Institute for Evolutionary Life Sciences, Groningen University, Groningen, the Netherlands
| | - H Slabbekoorn
- Behavioural Biology, Institute of Biology (IBL), Leiden University, Leiden, the Netherlands
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Hamao S, Sugita N, Nishiumi I. Geographic variation in bird songs: examination of the effects of sympatric related species on the acoustic structure of songs. Acta Ethol 2015. [DOI: 10.1007/s10211-015-0228-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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26
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Greig EI, Baldassarre DT, Webster MS. Differential rates of phenotypic introgression are associated with male behavioral responses to multiple signals. Evolution 2015; 69:2602-12. [PMID: 26292844 DOI: 10.1111/evo.12756] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 08/04/2015] [Accepted: 08/12/2015] [Indexed: 12/26/2022]
Abstract
Sexual selection on multiple signals may lead to differential rates of signal introgression across hybrid zones if some signals contribute to reproductive isolation but others facilitate gene flow. Competition among males is one powerful form of sexual selection, but male behavioral responses to multiple traits have not been considered in a system where traits have introgressed differentially. Using playbacks, mounts, and a reciprocal experimental design, we tested the hypothesis that male responses to song and plumage in two subspecies of red-backed fairy-wren (Malurus melanocephalus) explain patterns of differential signal introgression (song has not introgressed, whereas plumage color has introgressed asymmetrically). We found that males of both subspecies discriminated symmetrically between subspecies' songs at a long range, but at a close range, we found that aggression was equal for both subspecies' plumage and songs. Taken together, our results suggest that male behavioral responses hinder the introgression of song, but allow for the observed asymmetrical introgression of plumage. Our results highlight how behavioral responses are a key component of signal evolution when recently divergent taxa come together, and how differential responses to multiple signals may lead to differential signal introgression and novel trait combinations.
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Affiliation(s)
- Emma I Greig
- Cornell Laboratory of Ornithology, Department of Neurobiology and Behavior, Cornell University, Ithaca, New York, 14850.
| | - Daniel T Baldassarre
- Cornell Laboratory of Ornithology, Department of Neurobiology and Behavior, Cornell University, Ithaca, New York, 14850.,Department of Biology, University of Miami, Coral Gables, Florida, 33146
| | - Michael S Webster
- Cornell Laboratory of Ornithology, Department of Neurobiology and Behavior, Cornell University, Ithaca, New York, 14850
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Qvarnström A, Ålund M, McFarlane SE, Sirkiä PM. Climate adaptation and speciation: particular focus on reproductive barriers in Ficedula flycatchers. Evol Appl 2015; 9:119-34. [PMID: 27087843 PMCID: PMC4780377 DOI: 10.1111/eva.12276] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2015] [Accepted: 05/14/2015] [Indexed: 01/19/2023] Open
Abstract
Climate adaptation is surprisingly rarely reported as a cause for the build‐up of reproductive isolation between diverging populations. In this review, we summarize evidence for effects of climate adaptation on pre‐ and postzygotic isolation between emerging species with a particular focus on pied (Ficedula hypoleuca) and collared (Ficedula albicollis) flycatchers as a model for research on speciation. Effects of climate adaptation on prezygotic isolation or extrinsic selection against hybrids have been documented in several taxa, but the combined action of climate adaptation and sexual selection is particularly well explored in Ficedula flycatchers. There is a general lack of evidence for divergent climate adaptation causing intrinsic postzygotic isolation. However, we argue that the profound effects of divergence in climate adaptation on the whole biochemical machinery of organisms and hence many underlying genes should increase the likelihood of genetic incompatibilities arising as side effects. Fast temperature‐dependent co‐evolution between mitochondrial and nuclear genomes may be particularly likely to lead to hybrid sterility. Thus, how climate adaptation relates to reproductive isolation is best explored in relation to fast‐evolving barriers to gene flow, while more research on later stages of divergence is needed to achieve a complete understanding of climate‐driven speciation.
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Affiliation(s)
- Anna Qvarnström
- Animal Ecology/Department of Ecology and Genetics Uppsala University Uppsala Sweden
| | - Murielle Ålund
- Animal Ecology/Department of Ecology and Genetics Uppsala University Uppsala Sweden
| | - S Eryn McFarlane
- Animal Ecology/Department of Ecology and Genetics Uppsala University Uppsala Sweden
| | - Päivi M Sirkiä
- Animal Ecology/Department of Ecology and Genetics Uppsala University Uppsala Sweden; Finnish Museum of Natural History Zoology Unit University of Helsinki Helsinki Finland
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29
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Reif J, Jiran M, Reifová R, Vokurková J, Dolata PT, Petrusek A, Petrusková T. Interspecific territoriality in two songbird species: potential role of song convergence in male aggressive interactions. Anim Behav 2015. [DOI: 10.1016/j.anbehav.2015.03.016] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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30
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Dalziell AH, Welbergen JA, Igic B, Magrath RD. Avian vocal mimicry: a unified conceptual framework. Biol Rev Camb Philos Soc 2014; 90:643-68. [PMID: 25079896 DOI: 10.1111/brv.12129] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2013] [Revised: 06/10/2014] [Accepted: 06/16/2014] [Indexed: 11/30/2022]
Abstract
Mimicry is a classical example of adaptive signal design. Here, we review the current state of research into vocal mimicry in birds. Avian vocal mimicry is a conspicuous and often spectacular form of animal communication, occurring in many distantly related species. However, the proximate and ultimate causes of vocal mimicry are poorly understood. In the first part of this review, we argue that progress has been impeded by conceptual confusion over what constitutes vocal mimicry. We propose a modified version of Vane-Wright's (1980) widely used definition of mimicry. According to our definition, a vocalisation is mimetic if the behaviour of the receiver changes after perceiving the acoustic resemblance between the mimic and the model, and the behavioural change confers a selective advantage on the mimic. Mimicry is therefore specifically a functional concept where the resemblance between heterospecific sounds is a target of selection. It is distinct from other forms of vocal resemblance including those that are the result of chance or common ancestry, and those that have emerged as a by-product of other processes such as ecological convergence and selection for large song-type repertoires. Thus, our definition provides a general and functionally coherent framework for determining what constitutes vocal mimicry, and takes account of the diversity of vocalisations that incorporate heterospecific sounds. In the second part we assess and revise hypotheses for the evolution of avian vocal mimicry in the light of our new definition. Most of the current evidence is anecdotal, but the diverse contexts and acoustic structures of putative vocal mimicry suggest that mimicry has multiple functions across and within species. There is strong experimental evidence that vocal mimicry can be deceptive, and can facilitate parasitic interactions. There is also increasing support for the use of vocal mimicry in predator defence, although the mechanisms are unclear. Less progress has been made in explaining why many birds incorporate heterospecific sounds into their sexual displays, and in determining whether these vocalisations are functionally mimetic or by-products of sexual selection for other traits such as repertoire size. Overall, this discussion reveals a more central role for vocal mimicry in the behavioural ecology of birds than has previously been appreciated. The final part of this review identifies important areas for future research. Detailed empirical data are needed on individual species, including on the structure of mimetic signals, the contexts in which mimicry is produced, how mimicry is acquired, and the ecological relationships between mimic, model and receiver. At present, there is little information and no consensus about the various costs of vocal mimicry for the protagonists in the mimicry complex. The diversity and complexity of vocal mimicry in birds raises important questions for the study of animal communication and challenges our view of the nature of mimicry itself. Therefore, a better understanding of avian vocal mimicry is essential if we are to account fully for the diversity of animal signals.
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Affiliation(s)
- Anastasia H Dalziell
- Division of Evolution, Ecology and Genetics, Research School of Biology, Australian National University, Canberra 0200, Australia
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Li Y, Wang J, Metzner W, Luo B, Jiang T, Yang S, Shi L, Huang X, Yue X, Feng J. Behavioral responses to echolocation calls from sympatric heterospecific bats: implications for interspecific competition. Behav Ecol Sociobiol 2014. [DOI: 10.1007/s00265-013-1680-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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32
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33
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Sandoval L, Méndez C, Mennill DJ. Different vocal signals, but not prior experience, influence heterospecific from conspecific discrimination. Anim Behav 2013. [DOI: 10.1016/j.anbehav.2013.02.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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34
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The causes and evolutionary consequences of mixed singing in two hybridizing songbird species (Luscinia spp.). PLoS One 2013; 8:e60172. [PMID: 23577089 PMCID: PMC3618175 DOI: 10.1371/journal.pone.0060172] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Accepted: 02/22/2013] [Indexed: 11/19/2022] Open
Abstract
Bird song plays an important role in the establishment and maintenance of prezygotic reproductive barriers. When two closely related species come into secondary contact, song convergence caused by acquisition of heterospecific songs into the birds’ repertoires is often observed. The proximate mechanisms responsible for such mixed singing, and its effect on the speciation process, are poorly understood. We used a combination of genetic and bioacoustic analyses to test whether mixed singing observed in the secondary contact zone of two passerine birds, the Thrush Nightingale (Luscinia luscinia) and the Common Nightingale (L. megarhynchos), is caused by introgressive hybridization. We analysed song recordings of both species from allopatric and sympatric populations together with genotype data from one mitochondrial and seven nuclear loci. Semi-automated comparisons of our recordings with an extensive catalogue of Common Nightingale song types confirmed that most of the analysed sympatric Thrush Nightingale males were ‘mixed singers’ that use heterospecific song types in their repertoires. None of these ‘mixed singers’ possessed any alleles introgressed from the Common Nightingale, suggesting that they were not backcross hybrids. We also analysed songs of five individuals with intermediate phenotype, which were identified as F1 hybrids between the Thrush Nightingale female and the Common Nightingale male by genetic analysis. Songs of three of these hybrids corresponded to the paternal species (Common Nightingale) but the remaining two sung a mixed song. Our results suggest that although hybridization might increase the tendency for learning songs from both parental species, interspecific cultural transmission is the major proximate mechanism explaining the occurrence of mixed singers among the sympatric Thrush Nightingales. We also provide evidence that mixed singing does not substantially increase the rate of interspecific hybridization and discuss the possible adaptive value of this phenomenon in nightingales.
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35
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36
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Greig EI, Webster MS. Spatial decoupling of song and plumage generates novel phenotypes between 2 avian subspecies. Behav Ecol 2013. [DOI: 10.1093/beheco/art005] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Vallin N, Nonaka Y, Feng J, Qvarnström A. Relative performance of hybrid nestlings in Ficedula flycatchers: a translocation experiment. Ecol Evol 2013; 3:356-64. [PMID: 23467681 PMCID: PMC3586645 DOI: 10.1002/ece3.472] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 12/09/2012] [Accepted: 12/11/2012] [Indexed: 12/25/2022] Open
Abstract
Ecological speciation predicts that hybrids should experience relatively low fitness in the local environments of their parental species. In this study, we performed a translocation experiment of nestling hybrids between collared and pied flycatchers into the nests of conspecific pairs of their parental species. Our aim was to compare the performance of hybrids with purebred nestlings. Nestling collared flycatchers are known to beg and grow faster than nestling pied flycatchers under favorable conditions, but to experience higher mortality than nestling pied flycatchers under food limitation. The experiment was performed relatively late in the breeding season when food is limited. If hybrid nestlings have an intermediate growth potential and begging intensity, we expected them to beg and grow faster, but also to experience lower survival than pied flycatchers. In comparison with nestling collared flycatchers, we expected them to beg and grow slower, but to survive better. We found that nestling collared flycatchers indeed begged significantly faster and experienced higher mortality than nestling hybrids. Moreover, nestling hybrids had higher weight and tended to beg faster than nestling pied flycatchers, but we did not detect a difference in survival between the latter two groups of nestlings. We conclude that hybrid Ficedula nestlings appear to have a better intrinsic adaptation to food limitation late in the breeding season compared with nestling collared flycatchers. We discuss possible implications for gene flow between the two species.
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Affiliation(s)
- Niclas Vallin
- Animal Ecology/Department of Ecology and Genetics, Evolutionary Biology Centre, Uppsala University Norbyvägen 18D, SE-752 36, Uppsala, Sweden
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de Dinechin M, Dobson FS, Zehtindjiev P, Metcheva R, Couchoux C, Martin A, Quillfeldt P, Jouventin P. The biogeography of Gentoo Penguins (Pygoscelis papua). CAN J ZOOL 2012. [DOI: 10.1139/z2012-016] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Gentoo Penguins ( Pygoscelis papua (J.R. Forster 1781)) are defined morphologically as a single species with a northern and southern subspecies. Differences in nuptial displays and particularly mating calls, however, suggest isolation among island archipelagos of different ocean basins. We thus asked whether genetic divergence of populations could be confirmed using molecular markers. A phylogenetic tree was constructed from a sample of 110 Gentoo Penguins and 58 haplotypes from the control region of the mitochondrial DNA. Reanalyses of historical data on morphology were conducted to construct additional phylogenetic trees for comparison. In agreement with differences in mating calls, the phylogenetic tree that was based on mitochondrial DNA showed a deep division between populations in the Indian and Atlantic oceans. The current systematic division into two subspecies based on morphology was not supported. The division between populations in the Indian and Atlantic oceans was great enough to justify taxonomic revision, with at least three distinct clades: two in the respective sub-Antarctic and Antarctic zones of the Atlantic Ocean, and a deeply divergent and unnamed third clade in the sub-Antarctic Indian Ocean. In contrast to more pelagic species like Rockhopper Penguins ( Eudyptes chrysocome (J.R. Forster, 1781)), the restricted coastal foraging ranges of Gentoo Penguins and the distances among isolated oceanic archipelagos could explain the distribution of genetically differentiated populations.
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Affiliation(s)
- Marc de Dinechin
- Centre d’Ecologie Fonctionnelle et Evolutive – Centre National de la Recherche Scientifique UMR 5175, 1919 Route de Mende, 34293 Montpellier CEDEX 5, France
| | - F. Stephen Dobson
- Centre d’Ecologie Fonctionnelle et Evolutive – Centre National de la Recherche Scientifique UMR 5175, 1919 Route de Mende, 34293 Montpellier CEDEX 5, France
- Department of Biological Sciences, 331 Funchess Hall, Auburn University, Auburn, AL 36849, USA
| | - Pavel Zehtindjiev
- Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2 Gagarin Street, 1113 Sofia, Bulgaria
| | - Roumiana Metcheva
- Institute of Biodiversity and Ecosystem Research, Bulgarian Academy of Sciences, 2 Gagarin Street, 1113 Sofia, Bulgaria
| | - Charline Couchoux
- Centre d’Ecologie Fonctionnelle et Evolutive – Centre National de la Recherche Scientifique UMR 5175, 1919 Route de Mende, 34293 Montpellier CEDEX 5, France
| | - Alice Martin
- Centre d’Ecologie Fonctionnelle et Evolutive – Centre National de la Recherche Scientifique UMR 5175, 1919 Route de Mende, 34293 Montpellier CEDEX 5, France
| | - Petra Quillfeldt
- Vogelwarte Radolfzell am Max-Planck-Institut für Ornithologie, Schlossallee 2, D-78315 Radolfzell, Germany
| | - Pierre Jouventin
- Centre d’Ecologie Fonctionnelle et Evolutive – Centre National de la Recherche Scientifique UMR 5175, 1919 Route de Mende, 34293 Montpellier CEDEX 5, France
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Laiolo P. Interspecific interactions drive cultural co-evolution and acoustic convergence in syntopic species. J Anim Ecol 2012; 81:594-604. [PMID: 22260650 DOI: 10.1111/j.1365-2656.2011.01946.x] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
1. Antagonistic interactions have been favourite subjects of studies on species co-evolution, because coexistence among competing species often results in quantifiable character displacement. A common output for competitive interactions is trait divergence, although the opposite phenomenon, convergence, has been proposed to evolve in some instances, for example in the communication behaviour of species that maintain mutually exclusive territories. 2. I use here experimental and observational evidence to study how species interactions drive heterospecific signal convergence and analyse how convergence feeds back to the interaction itself, in the form of aggressive behaviour. I recorded the learned territorial signals of two non-hybridizing larks, Galerida cristata and G. theklae, and used allopatric populations as controls for evaluating acoustic convergence in syntopy. Acoustic variation was analysed with respect to social conditions controlling for other potential agents of natural selection, habitat and climate. 3. Interspecific convergence of Galerida calls peaked in syntopy. Although call acoustic structure was affected by climate and habitat, it matched gradients of density and proximity to congeners even at small local scales. The process of cultural transmission, in which individuals may acquire components of behaviour by copying neighbours, enhances the correlation between call acoustics and the local social milieu. 4. Territories were defended against both species, but playback stimuli of convergent congener calls elicited a stronger aggressive reaction than congener calls from allopatric locations. 5. This study shows that learned behaviours may co-evolve as a consequence of antagonistic interactions, determining reciprocal cultural evolution or cultural co-evolution. As for (biological) co-evolution, the distribution of competing species influences whether a particular area becomes a syntopic environment in which convergence is occurring, or an allopatric environment lacking interactions and reciprocal change. Because of their plastic nature, cultural coadaptations may rapidly shift in response to fluctuating social selection, thus propelling dynamic interactions and fine adjustments to the local environment.
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Affiliation(s)
- Paola Laiolo
- Research Unit of Biodiversity (CSIC, UO, PA), University of Oviedo, 33071 Oviedo, Spain.
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40
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Krakauer AH, Webster MS, Duval EH, Jones AG, Shuster SM. The opportunity for sexual selection: not mismeasured, just misunderstood. J Evol Biol 2011; 24:2064-71. [PMID: 21635605 DOI: 10.1111/j.1420-9101.2011.02317.x] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Evolutionary biologists have developed several indices, such as selection gradients (β) and the opportunity for sexual selection (I(s) ), to quantify the actual and/or potential strength of sexual selection acting in natural or experimental populations. In a recent paper, Klug et al. (J. Evol. Biol.23, 2010, 447) contend that selection gradients are the only legitimate metric for quantifying sexual selection. They argue that I(s) and similar mating-system-based metrics provide unpredictable results, which may be uncorrelated with selection acting on a trait, and should therefore be abandoned. We find this view short-sighted and argue that the choice of metric should be governed by the research question at hand. We describe insights that measures such as the opportunity for selection can provide and also argue that Klug et al. have overstated the problems with this approach while glossing over similar issues with the interpretation of selection gradients. While no metric perfectly characterizes sexual selection in all circumstances, thoughtful application of existing measures has been and continues to be informative in evolutionary studies.
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Affiliation(s)
- A H Krakauer
- Department of Evolution and Ecology, University of California, Davis, CA 95616, USA.
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41
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Schuchmann M, Siemers BM. Behavioral evidence for community-wide species discrimination from echolocation calls in bats. Am Nat 2010; 176:72-82. [PMID: 20459322 DOI: 10.1086/652993] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Recognizing species identity is crucial for many aspects of animal life and is often mediated by acoustic signals. Although most animals are able to distinguish acoustic signals of their own species from other sympatrically occurring species, it is yet unknown whether animals can distinguish among acoustic signals of different closely related sympatric species. In this context, echolocating bats are a particularly interesting model system: their echolocation system evolved primarily for spatial orientation and foraging, but recent studies indicate that echolocation also has an important communicative function. Yet, the role of echolocation calls for species discrimination and thus potentially for interspecific communication has not been investigated. Using a behavioral discrimination assay, we found that two species of wild horseshoe bats could discriminate calls of their own species from those of three sympatric congeneric species. We further show that the bats were able to discriminate between echolocation calls of different congeneric species from the local community. In both cases, discrimination ability was high despite strong overlap of species' call frequency bands. This study provides the first experimental evidence for species discrimination based on echolocation calls. On a more general level, it shows for the first time that animals can distinguish among acoustic signals of different closely related and ecologically similar species from their local community.
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Affiliation(s)
- Maike Schuchmann
- Max Planck Institute for Ornithology, Sensory Ecology Group, Eberhard-Gwinner-Strasse, 82319 Seewiesen, Germany
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Backström N, Lindell J, Zhang Y, Palkopoulou E, Qvarnström A, Saetre GP, Ellegren H. A HIGH-DENSITY SCAN OF THE Z CHROMOSOME IN FICEDULA FLYCATCHERS REVEALS CANDIDATE LOCI FOR DIVERSIFYING SELECTION. Evolution 2010; 64:3461-75. [DOI: 10.1111/j.1558-5646.2010.01082.x] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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Abstract
Speciation in animals often requires that population divergence goes through three major evolutionary stages, i.e. ecological divergence, development of sexual isolation and the build-up of genetic incompatibility. There is theoretical consensus regarding favourable conditions required for speciation to reach its final and irreversible stage, but empirical tests remain rare. Here, we review recent research on processes of speciation, based on studies in hybrid zones between collared (Ficedula albicollis) and pied flycatchers (Ficedula hypoleuca). A major advantage of this study system is that questions concerning all three major sources of reproductive isolation and their interconnections can be addressed. We conclude that (i) ecological divergence is caused by divergence in life-history traits, (ii) females prefer mates of their own species based on differences in both plumage and song characteristics, (iii) male plumage characteristics have diverged but their song has converged in sympatry, (iv) there is genetic incompatibility in accordance with Haldane's rule, and (v) the Z-chromosome appears to be a hotspot for genes involved in sexual isolation and genetic incompatibility. We discuss how identification of the genes underlying the three major sources of reproductive isolation can be used to draw conclusions about links between the processes driving their evolution.
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Affiliation(s)
- Anna Qvarnström
- Animal Ecology/Department of Ecology and Evolution, Uppsala University, Norbyvägen 18D, 752 36 Uppsala, Sweden.
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Takahasi M, Okanoya K. Song Learning in Wild and Domesticated Strains of White-Rumped Munia,Lonchura striata, Compared by Cross-Fostering Procedures: Domestication Increases Song Variability by Decreasing Strain-Specific Bias. Ethology 2010. [DOI: 10.1111/j.1439-0310.2010.01761.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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45
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Seddon N, Tobias JA. Character displacement from the receiver's perspective: species and mate recognition despite convergent signals in suboscine birds. Proc Biol Sci 2010; 277:2475-83. [PMID: 20375056 DOI: 10.1098/rspb.2010.0210] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Many social animals use long-distance signals to attract mates and defend territories. They face the twin challenges of discriminating between species to identify conspecific mates, and between individuals to recognize collaborators and competitors. It is therefore often assumed that long-distance signals are under strong selection for species-specificity and individual distinctiveness, and that this will drive character displacement when closely related species meet, particularly in noisy environments. However, the occurrence of signal stereotypy and convergence in rainforest species seems to contradict these ideas, and raises the question of whether receivers in these systems can recognize species or individuals by long-distance signals alone. Here, we test for acoustically mediated recognition in two sympatric antbird species that are known to have convergent songs. We show that male songs are stereotyped yet individually distinctive, and we use playback experiments to demonstrate that females can discriminate not only between conspecific and heterospecific males, but between mates and strangers. These findings provide clear evidence that stereotypy and convergence in male signals can be accommodated by fine tuning of perceptual abilities in female receivers, suggesting that the evolutionary forces driving divergent character displacement in animal signals are weaker than is typically assumed.
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Affiliation(s)
- Nathalie Seddon
- Department of Zoology, Edward Grey Institute, University of Oxford, South Parks Road, Oxford OX1 3PS, UK
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SAETRE GLENNPETER, SAETHER STEINARE. Ecology and genetics of speciation inFicedulaflycatchers. Mol Ecol 2010; 19:1091-106. [DOI: 10.1111/j.1365-294x.2010.04568.x] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Derégnaucourt S. Interspecific hybridization as a tool to understand vocal divergence: the example of crowing in quail (Genus Coturnix). PLoS One 2010; 5:e9451. [PMID: 20195481 PMCID: PMC2829089 DOI: 10.1371/journal.pone.0009451] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2009] [Accepted: 02/07/2010] [Indexed: 12/02/2022] Open
Abstract
Understanding the mechanisms that lead organisms to be separated into distinct species remains a challenge in evolutionary biology. Interspecific hybridization, which results from incomplete reproductive isolation, is a useful tool to investigate such mechanisms. In birds, interspecific hybridization is relatively frequent, despite the fact that closed species exhibit morphological and behavioural differences. Evolution of behaviour is difficult to investigate on a large timescale since it does not ‘fossilize’. Here I propose that calls of hybrid non-songbirds that develop without the influence of learning may help in understanding the gradual process that leads to vocal divergence during speciation. I recorded crows produced by the European quail (Coturnix c. coturnix), the domestic Japanese quail (Coturnix c. japonica) and their hybrids (F1, F2 and backcrosses). Most crowing patterns were intermediate to those of the parental species; some were similar to one or the other parental species, or not present in either parental species. I also observed vocal changes in hybrid crows during the breeding season and from one year to the other. This vocal variability resembles those observed during the ontogeny of the crow in quails. It is likely that similar mechanisms involved in vocal changes during ontogeny might have driven vocal divergence in the species of Palearctic quails. I suggest that hybrid crows might have resembled those produced by intermediary forms of quails during speciation.
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Lemmon EM, Lemmon AR. REINFORCEMENT IN CHORUS FROGS: LIFETIME FITNESS ESTIMATES INCLUDING INTRINSIC NATURAL SELECTION AND SEXUAL SELECTION AGAINST HYBRIDS. Evolution 2010; 64:1748-61. [PMID: 20100218 DOI: 10.1111/j.1558-5646.2010.00955.x] [Citation(s) in RCA: 71] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Emily Moriarty Lemmon
- Department of Biological Science, Florida State University, Tallahassee, Florida 32306, USA.
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Phillips CT, Johnston CE. Evolution of acoustic signals in Cyprinella: degree of similarity in sister species. JOURNAL OF FISH BIOLOGY 2009; 74:120-132. [PMID: 20735528 DOI: 10.1111/j.1095-8649.2008.02118.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Signal structure and behavioural context were examined in two sister species, the Tallapoosa shiner Cyprinella gibbsi and the tricolor shiner Cyprinella trichroistia, with two more distantly related species, the Ocmulgee shiner Cyprinella callisema and the whitetail shiner Cyprinella galactura, in order to test the hypothesis that more closely related species would share components of signals not shared with more distant relatives, and to look at the degree of divergence. The species examined differed in number and type of signal components, contexts and frequency under which calls were produced. While all species produced pulses arranged into pulse bursts, C. gibbsi and C. trichroistia shared unique call types, chirps and rattles, and C. galactura and C. callisema both produced the knock call type. The sister species shared more components of their call repertoire with each other than with the more distantly related C. galactura and C. callisema and clustered together based on courtship call similarity.
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Affiliation(s)
- C T Phillips
- Fish Biodiversity Lab, Department of Fisheries, Auburn University, Auburn, AL 36849, USA.
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