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Carel Ten Cate - One of the best experts on this subject based on the ideXlab platform.
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Hybrid vocalizations are effective within, but not outside, an avian hybrid zone
Behavioral Ecology, 2007Co-Authors: Paula M. Den Hartog, Selvino R De Kort, Carel Ten CateAbstract:Secondary contact between closely related species can lead to hybridization. The fitness of hybrid individuals within and outside the hybrid zone determines whether the hybrid zone expands into the ranges of the 2 parental species or remains a stable, geographically narrow area in between the allopatric ranges of the parental species. In birds, vocalizations play an important role in male--male competition and female mate choice and are often affected by hybridization. One of the factors that will influence male hybrid fitness is the ability to defend a territory against competitors by vocalizing. We tested the efficacy of territorial signals of hybrids of 2 dove species, Streptopelia vinacea and Streptopelia capicola, compared with the vocalizations of the parental species. With playback experiments, we assessed the response to hybrid and the 2 parental species vocalizations in the hybrid zone and adjacent allopatric populations of each species. In the hybrid zone, males did not respond differently to the 3 vocalization types. In both allopatric populations, however, males responded more to conspecific than to heterospecific signals and the response strength to hybrid signals was intermediate. Therefore, in the allopatric populations, hybrid males may have a reduced success in defending territories. In male--male interactions in the hybrid zone, hybrids may not have a disadvantage compared with males of the parental species. The ability to defend a territory against competitors may thus help maintain a stable hybrid zone in the area of overlap. Copyright 2007, Oxford University Press.
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Repeated decrease in vocal repertoire size in Streptopelia doves
Animal Behaviour, 2004Co-Authors: Selvino R De Kort, Carel Ten CateAbstract:Most bird species produce different acoustic signals in different behavioural contexts. This intraspecific variation in signal types is thought to be the result of selection for optimal communication in each context. Doves in the genus Streptopelia have three distinct behavioural contexts in which they produce coo vocalizations. Some Streptopelia species have three acoustically similar coo vocalizations associated with the three contexts, but in others the coo vocalizations differ in acoustic structure. Using a well-resolved phylogeny, we examined whether acoustic differentiation between coo types was the ancestral state. Unexpectedly, the results showed that the common ancestor of Streptopelia had differentiated coos rather than a single coo type. This result implies that context-specific acoustic signals disappeared from the vocal repertoire independently at least two times. We further tested whether different context-dependent signal types follow different evolutionary pathways and whether they differ in rate of evolutionary change. We found that the long-range signal (perch-coo) evolves at a higher rate than the short-range signal (bow-coo). These results are discussed in relation to selection for species recognition and transmission requirements.
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Diverge or merge? The effect of sympatric occurrence on the territorial vocalizations of the vinaceous dove Streptopelia vinacea and the ring-necked dove S. capicola
Journal of Avian Biology, 2002Co-Authors: Selvino R De Kort, Paula M. Den Hartog, Carel Ten CateAbstract:Sympatric occurrence of two closely related species is expected to lead to diverging or converging shifts in signal characteristics of one or both species. We examined signal characteristics in the vinaceous dove Streptopelia vinacea and the ring-necked dove S. capicola, two sister species that are mainly allopatric but occur in sympatry in northwestern Uganda. Vocal characteristics of the birds in sympatry were compared with those of an adjacent and a distant allopatric population of each species. The sympatric population showed intermediate values between the allopatric populations from Uganda. However, within each species there is little geographic variation between distant allopatric populations. Since vocal differences between dove species have a genetic base, the convergence in vocal characteristics is most likely explained by hybridization. Probably, the two species came into secondary contact relatively recently. Climatic changes during the last several thousand years and recent habitat changes caused by the growing human population, may have allowed Streptopelia capicola to extend its range in the northern direction.
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A MOLECULAR PHYLOGENY OF THE DOVE GENERA Streptopelia AND COLUMBA
The Auk, 2001Co-Authors: Kevin P. Johnson, Selvino R De Kort, Carel Ten Cate, Karen Dinwoodey, A. C. Mateman, C. M. Lessells, Dale H. ClaytonAbstract:Abstract Evolutionary history of the dove genus Streptopelia has not been examined with rigorous phylogenetic methods. We present a study of phylogenetic relationships of Streptopelia based on over 3,600 base pairs of nuclear and mitochondrial gene sequences. To test for monophyly of Streptopelia, we used several other columbiform taxa, including Columba (Old and New World), Macropygia, Reinwardtoena, and the enigmatic Pink Pigeon (Nesoenas mayeri). On the basis of our analyses, Streptopelia (as currently defined) is not monophyletic; Nesoenas mayeri is the sister species to S. picturata, resulting in paraphyly of Streptopelia. Three main clades of Streptopelia are identified: (1) S. chinensis plus S. senegalensis, (2) S. picturata plus Nesoenas mayeri, and (3) all other species of Streptopelia. It is unclear whether those clades form a monophyletic group to the exclusion of Old World Columba, but several analyses produce that result. Species of Old World Columba are closely related to Streptopelia, with ...
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response to interspecific vocalizations is affected by degree of phylogenetic relatedness in Streptopelia doves
Animal Behaviour, 2001Co-Authors: Selvino R De Kort, Carel Ten CateAbstract:Owing to common descent, related species often show similarity in a number of traits, including those involved in communication. As a result signal similarity and phylogenetic distance are usually inversly related. However, similarity in signal structure need not correspond with similarity in response to such signals. We tested the hypothesis that individuals are more responsive to signals from closely related species than from distantly related ones. We conducted playback experiments on two turtle dove species (African collared-dove, Streptopelia roseogrisea, and vinaceous dove, Streptopelia vinacea) using conspecific and heterospecific vocalizations. Vocalizations were played from species that differed in degree of relatedness and in relative geographical distribution. This enabled us to separate the effects of phylogeny and those of sympatry. There was an effect of phylogenetic distance, with a decrease in response to playback stimuli as phylogenetic distance increased. The results also suggest a minor effect of sympatry, with the response to sympatric species being lower. Copyright 2001 The Association for the Study of Animal Behaviour.
Selvino R De Kort - One of the best experts on this subject based on the ideXlab platform.
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Hybrid vocalizations are effective within, but not outside, an avian hybrid zone
Behavioral Ecology, 2007Co-Authors: Paula M. Den Hartog, Selvino R De Kort, Carel Ten CateAbstract:Secondary contact between closely related species can lead to hybridization. The fitness of hybrid individuals within and outside the hybrid zone determines whether the hybrid zone expands into the ranges of the 2 parental species or remains a stable, geographically narrow area in between the allopatric ranges of the parental species. In birds, vocalizations play an important role in male--male competition and female mate choice and are often affected by hybridization. One of the factors that will influence male hybrid fitness is the ability to defend a territory against competitors by vocalizing. We tested the efficacy of territorial signals of hybrids of 2 dove species, Streptopelia vinacea and Streptopelia capicola, compared with the vocalizations of the parental species. With playback experiments, we assessed the response to hybrid and the 2 parental species vocalizations in the hybrid zone and adjacent allopatric populations of each species. In the hybrid zone, males did not respond differently to the 3 vocalization types. In both allopatric populations, however, males responded more to conspecific than to heterospecific signals and the response strength to hybrid signals was intermediate. Therefore, in the allopatric populations, hybrid males may have a reduced success in defending territories. In male--male interactions in the hybrid zone, hybrids may not have a disadvantage compared with males of the parental species. The ability to defend a territory against competitors may thus help maintain a stable hybrid zone in the area of overlap. Copyright 2007, Oxford University Press.
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Repeated decrease in vocal repertoire size in Streptopelia doves
Animal Behaviour, 2004Co-Authors: Selvino R De Kort, Carel Ten CateAbstract:Most bird species produce different acoustic signals in different behavioural contexts. This intraspecific variation in signal types is thought to be the result of selection for optimal communication in each context. Doves in the genus Streptopelia have three distinct behavioural contexts in which they produce coo vocalizations. Some Streptopelia species have three acoustically similar coo vocalizations associated with the three contexts, but in others the coo vocalizations differ in acoustic structure. Using a well-resolved phylogeny, we examined whether acoustic differentiation between coo types was the ancestral state. Unexpectedly, the results showed that the common ancestor of Streptopelia had differentiated coos rather than a single coo type. This result implies that context-specific acoustic signals disappeared from the vocal repertoire independently at least two times. We further tested whether different context-dependent signal types follow different evolutionary pathways and whether they differ in rate of evolutionary change. We found that the long-range signal (perch-coo) evolves at a higher rate than the short-range signal (bow-coo). These results are discussed in relation to selection for species recognition and transmission requirements.
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Diverge or merge? The effect of sympatric occurrence on the territorial vocalizations of the vinaceous dove Streptopelia vinacea and the ring-necked dove S. capicola
Journal of Avian Biology, 2002Co-Authors: Selvino R De Kort, Paula M. Den Hartog, Carel Ten CateAbstract:Sympatric occurrence of two closely related species is expected to lead to diverging or converging shifts in signal characteristics of one or both species. We examined signal characteristics in the vinaceous dove Streptopelia vinacea and the ring-necked dove S. capicola, two sister species that are mainly allopatric but occur in sympatry in northwestern Uganda. Vocal characteristics of the birds in sympatry were compared with those of an adjacent and a distant allopatric population of each species. The sympatric population showed intermediate values between the allopatric populations from Uganda. However, within each species there is little geographic variation between distant allopatric populations. Since vocal differences between dove species have a genetic base, the convergence in vocal characteristics is most likely explained by hybridization. Probably, the two species came into secondary contact relatively recently. Climatic changes during the last several thousand years and recent habitat changes caused by the growing human population, may have allowed Streptopelia capicola to extend its range in the northern direction.
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A MOLECULAR PHYLOGENY OF THE DOVE GENERA Streptopelia AND COLUMBA
The Auk, 2001Co-Authors: Kevin P. Johnson, Selvino R De Kort, Carel Ten Cate, Karen Dinwoodey, A. C. Mateman, C. M. Lessells, Dale H. ClaytonAbstract:Abstract Evolutionary history of the dove genus Streptopelia has not been examined with rigorous phylogenetic methods. We present a study of phylogenetic relationships of Streptopelia based on over 3,600 base pairs of nuclear and mitochondrial gene sequences. To test for monophyly of Streptopelia, we used several other columbiform taxa, including Columba (Old and New World), Macropygia, Reinwardtoena, and the enigmatic Pink Pigeon (Nesoenas mayeri). On the basis of our analyses, Streptopelia (as currently defined) is not monophyletic; Nesoenas mayeri is the sister species to S. picturata, resulting in paraphyly of Streptopelia. Three main clades of Streptopelia are identified: (1) S. chinensis plus S. senegalensis, (2) S. picturata plus Nesoenas mayeri, and (3) all other species of Streptopelia. It is unclear whether those clades form a monophyletic group to the exclusion of Old World Columba, but several analyses produce that result. Species of Old World Columba are closely related to Streptopelia, with ...
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response to interspecific vocalizations is affected by degree of phylogenetic relatedness in Streptopelia doves
Animal Behaviour, 2001Co-Authors: Selvino R De Kort, Carel Ten CateAbstract:Owing to common descent, related species often show similarity in a number of traits, including those involved in communication. As a result signal similarity and phylogenetic distance are usually inversly related. However, similarity in signal structure need not correspond with similarity in response to such signals. We tested the hypothesis that individuals are more responsive to signals from closely related species than from distantly related ones. We conducted playback experiments on two turtle dove species (African collared-dove, Streptopelia roseogrisea, and vinaceous dove, Streptopelia vinacea) using conspecific and heterospecific vocalizations. Vocalizations were played from species that differed in degree of relatedness and in relative geographical distribution. This enabled us to separate the effects of phylogeny and those of sympatry. There was an effect of phylogenetic distance, with a decrease in response to playback stimuli as phylogenetic distance increased. The results also suggest a minor effect of sympatry, with the response to sympatric species being lower. Copyright 2001 The Association for the Study of Animal Behaviour.
Paula M. Den Hartog - One of the best experts on this subject based on the ideXlab platform.
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Hybrid vocalizations are effective within, but not outside, an avian hybrid zone
Behavioral Ecology, 2007Co-Authors: Paula M. Den Hartog, Selvino R De Kort, Carel Ten CateAbstract:Secondary contact between closely related species can lead to hybridization. The fitness of hybrid individuals within and outside the hybrid zone determines whether the hybrid zone expands into the ranges of the 2 parental species or remains a stable, geographically narrow area in between the allopatric ranges of the parental species. In birds, vocalizations play an important role in male--male competition and female mate choice and are often affected by hybridization. One of the factors that will influence male hybrid fitness is the ability to defend a territory against competitors by vocalizing. We tested the efficacy of territorial signals of hybrids of 2 dove species, Streptopelia vinacea and Streptopelia capicola, compared with the vocalizations of the parental species. With playback experiments, we assessed the response to hybrid and the 2 parental species vocalizations in the hybrid zone and adjacent allopatric populations of each species. In the hybrid zone, males did not respond differently to the 3 vocalization types. In both allopatric populations, however, males responded more to conspecific than to heterospecific signals and the response strength to hybrid signals was intermediate. Therefore, in the allopatric populations, hybrid males may have a reduced success in defending territories. In male--male interactions in the hybrid zone, hybrids may not have a disadvantage compared with males of the parental species. The ability to defend a territory against competitors may thus help maintain a stable hybrid zone in the area of overlap. Copyright 2007, Oxford University Press.
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Diverge or merge? The effect of sympatric occurrence on the territorial vocalizations of the vinaceous dove Streptopelia vinacea and the ring-necked dove S. capicola
Journal of Avian Biology, 2002Co-Authors: Selvino R De Kort, Paula M. Den Hartog, Carel Ten CateAbstract:Sympatric occurrence of two closely related species is expected to lead to diverging or converging shifts in signal characteristics of one or both species. We examined signal characteristics in the vinaceous dove Streptopelia vinacea and the ring-necked dove S. capicola, two sister species that are mainly allopatric but occur in sympatry in northwestern Uganda. Vocal characteristics of the birds in sympatry were compared with those of an adjacent and a distant allopatric population of each species. The sympatric population showed intermediate values between the allopatric populations from Uganda. However, within each species there is little geographic variation between distant allopatric populations. Since vocal differences between dove species have a genetic base, the convergence in vocal characteristics is most likely explained by hybridization. Probably, the two species came into secondary contact relatively recently. Climatic changes during the last several thousand years and recent habitat changes caused by the growing human population, may have allowed Streptopelia capicola to extend its range in the northern direction.
Ana B. Rodríguez - One of the best experts on this subject based on the ideXlab platform.
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Effect of stress and dexamethasone treatment on circadian rhythms of melatonin and corticosterone in ring dove (Streptopelia risoria).
Molecular and Cellular Biochemistry, 2002Co-Authors: Carmen Barriga, J. M. Marchena, Robert W. Lea, Steve Harvey, Ana B. RodríguezAbstract:The possible relationship between the circadian rhythm of blood levels of melatonin and corticosterone in ring dove (Streptopelia risoria) subjected to both immobilization stress and immobilization stress plus dexamethasone treatment were studied. The results show changes in the circadian rhythm of melatonin, with increased day-time levels in situations of stress accompanied by increased corticosterone levels. The highest blood melatonin levels over the 24 h of the study were obtained when the animals were treated with dexamethasone and then subjected to stress. Given the antioxidant role of melatonin, our results support the idea of melatonin-corticosterone coupling with the possibility that melatonin released in situations of stress counteracts the adverse effects of glucocorticoids on the organism.
Cyril Eraud - One of the best experts on this subject based on the ideXlab platform.
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Analysis of molecular variance (AMOVA) for populations of Streptopelia decaocto based on data from COI loci.
2018Co-Authors: Zoltán Bagi, Evangelos Antonis Dimopoulos, Dimitrios Loukovitis, Cyril Eraud, Szilvia KuszaAbstract:Analysis of molecular variance (AMOVA) for populations of Streptopelia decaocto based on data from COI loci.
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Turtle Dove Streptopelia turtur migration routes and wintering areas revealed using satellite telemetry
Bird Study, 2016Co-Authors: Hervé Lormée, Jean-marie Boutin, David Pinaud, Herve Bidault, Cyril EraudAbstract:Satellite telemetry of two European Turtle Doves Streptopelia turtur confirmed the broad patterns suggested by earlier work using geologgers but also revealed that they migrated by night and used four distinct stopover and two wintering sites. Winter habitat used by one bird covered less than 100 km2 per site, much smaller than previously assumed.
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survival of turtle doves Streptopelia turtur in relation to western africa environmental conditions
Ibis, 2009Co-Authors: Cyril Eraud, Jean-marie Boutin, Marcel Riviere, Jacques Brun, Christophe Barbraud, Hervé LorméeAbstract:Survival of Turtle Doves C. Eraud et al. hort comm nicationSurvival of Turtle Doves Streptopelia turtur in relation to western Africa environmental conditions CYRIL ERAUD, 1 * JEAN-MARIE BOUTIN, 1 MARCEL RIVIERE, 3 JACQUES BRUN, 4 CHRISTOPHE BARBRAUD 2 & HERVE LORMEE 1 1 Office National de la Chasse et de la Faune Sauvage, 79360 Villiers en Bois, France 2 Centre d’Etudes Biologiques de Chize, Centre National de la Recherche Scientifique, 79360 Villiers en Bois, France 3 17 rue du curois, Maisonneuve, 17310 Saint Pierre d’Oleron, France 4 Chemin de la source, 17160 Matha, France
