Publications
2023
Chesterton E, Sparks AM, Burke T, Komdeur J, Richardson DS, Dugdale HL. In press. The impact of helping on helper life-history and fitness in a cooperatively breeding bird. Evolution. EcoEvoRxiv
Speelman FJD, Borger MJ, Hammers M, van Eerden AOK, Richardson DS, Burke T, Dugdale HL, Komdeur J. In press. Implications of adult sex ratios on natal dispersal in a cooperative breeder. Animal Behaviour EcoEvoRxiv
Brown TJ, Hellicar M, Accouche W, van der Woude J, Dugdale HL, Komdeur J, Richardson DS. 2023. A major myna problem; invasive predator removal benefits female survival and population growth of a translocated island endemic. Global Ecology and Conservation 46, e202584
Borger MJ, Richardson DS, Dugdale HL, Burke T, Komdeur J. 2023. Testing the environmental buffering hypothesis of cooperative breeding in the Seychelles warblers. Acta ethologica
2022
Brown TJ, Spurgin L, Dugdale HL, Komdeur J, Burke T, Richardson DS. 2022. Causes and consequences of telomere lengthening in a wild vertebrate population. Molecular Ecology 31, 5933-5945
Brown TJ, Dugdale HL, Hammers M, Komdeur J, Richardson DS. 2022. Seychelles warblers with silver spoons: juvenile condition is a lifelong predictor of annual survival, but not annual reproduction or senescence. Ecology and Evolution 12, e9049
Busana M, Childs D, Burke T, Komdeur J, Richardson DS, Dugdale HL. 2022. Population level consequences of facultative cooperative behavior in a stochastic environment. Journal of Animal Ecology 91, 224-240
Busana M, Weissing FJ, Hammers M, Bakker J, Dugdale HL, Raj-Pant S, Richardson DS, Burke T, Komdeur J. 2022. Structural equation modeling reveals determinants of fitness in a cooperatively breeding bird. Behavioral Ecology 33, 352–363
Davies CS, Worsley SF, Maher KH, Komdeur J, Burke T, Dugdale HL, Richardson DS. 2022. Immunogenetic variation shapes the gut microbiome in a wild vertebrate population. Microbiome 10, 41
Raj Pant S, Hammers M, Versteegh M, Burke T, Dugdale HL, Richardson DS, Komdeur J. 2022. The contribution of extra-pair paternity to the variation in lifetime and age-specific male reproductive success in a socially monogamous species. Evolution 76, 915-930
Sparks AM, Hammers, M, Komdeur J, Burke T, Richardson DS, Dugdale HL. 2022. Sex-dependent effects of parental age on offspring fitness in a cooperatively breeding bird. Evolution Letters 6, 438-449
Sparks AM, Spurgin LG, van der Velde M, Fairfield EA, Komdeur J, Burke T, Richardson DS, Dugdale HL. 2022. Telomere heritability and parental age at conception effects in a wild avian population. Molecular Ecology 31, 6324-6338
van de Crommenacker J, Hammers M, Dugdale HL, Burke TA, Komdeur J, Richardson DS. 2022. Early-life conditions impact juvenile telomere length, but do not predict later life-history strategies or fitness in a wild vertebrate. Ecology & Evolution 12, e8971
Worsley SF, Davies CS, Mannarelli ME, Komdeur J, Dugdale HL, Richardson DS. 2022. Assessing the causes and consequences of gut mycobiome variation in a wild vertebrate population. Microbiome 10, 242
2021
Davies CS, Taylor MI, Hammers M, Burke T, Komdeur J, Dugdale HL, Richardson DS (2021) Contemporary evolution of the viral-sensing TLR3 gene in an isolated vertebrate population. Molecular Ecology 30, 2528-2542 (10.1111/mec.15914)
Hammers M, Kingma SA, van Boheemen LA, Sparks A, Burke T, Dugdale HL, Richardson DS, Komdeur J (2021) Helpers compensate for age-related declines in parental care and offspring survival in a cooperatively breeding bird. Evolution Letters 5, 143-153
Worsley SF, Davies CS, Mannarelli ME, Hutchings MI, Komdeur J, Burke T, Dugdale HL, Richardson DS (2021) Gut microbiome composition, not alpha diversity, is associated with survival in a natural vertebrate population. Animal Microbiome 3, 84
2020
Brown T, Hammers M, Taylor M, Dugdale HL, Komdeur J, Richardson DS (2020) Haematocrit, age and survival in a vertebrate population. Ecology & Evolution doi: 10.1002/ece3.7015
Berg ML, Beebe SC, Komdeur J, Cardilini APA, Ribot RFH, Bennett ATD, Buchanan KL (2020) Senescence of song revealed by a long-term study of the Seychelles warbler (Acrocephalus sechellensis). Scientific Reports, 10, 20479.
Raj Pant S, Hammers M, Komdeur J, Burke T, Dugdale HL, Richardson DS (2020) Age-dependent changes in infidelity in Seychelles warblers. Molecular Ecology, 29, 3731–3746.
2019
Raj Pant S, Komdeur J, Burke T, Dugdale HL, Richardson DS (2019) Socio-ecological conditions and female infidelity in the Seychelles warbler. Behavioral Ecology, 30, 1254–1264.
Groenewoud F, Kingma SA, Bebbington K, Richardson DS, Komdeur J (2019) Experimentally induced antipredator responses are mediated by social and environmental factors. Behavioral Ecology, 30, 986-992.
Hammers M, Kingma SA, Spurgin LG, Bebbington K, Dugdale HL, Burke T, Komdeur J, Richardson DS (2019) Breeders that receive help age more slowly in a cooperatively breeding bird. Nature Communications, 10, 1301.
van Boheemen LA, Hammers M, Kingma SA, Richardson DS, Burke T, Komdeur J, Dugdale HL (2019) Compensatory and additive helper effects in the cooperatively breeding Seychelles warbler (Acrocephalus sechellensis). Ecology and Evolution, 9, 2986–2999.
2018
Groenewoud F, Kingma SA, Hammers M, Dugdale HL, Burke T, Richardson DS, Komdeur J (2018) Subordinate females in the cooperatively breeding Seychelles warbler obtain direct benefits by joining unrelated groups. Journal of Animal Ecology, 87, 1251–1263.
Edwards HA, Dugdale HL, Richardson DS, Komdeur J, Burke T (2018) Extra-pair parentage and personality in a wild cooperative breeder. Behavioral Ecology and Sociobiology, 72, 37.
Johnson T, Brown TJ, Richardson DS, Dugdale HL (2018) The importance of post-translocation monitoring of habitat-use and population growth: insights from a Seychelles warbler translocation. Journal of Ornithology, 159, 439–446.
Bebbington K, Fairfield E, Spurgin L, Kingma SA, Dugdale HL, Komdeur J, Richardson DS (2018) Joint care can outweigh costs of non-kin competition in communal breeders. Behavioral Ecology, 29, 169–178.
Spurgin L, Bebbington K, Fairfield E, Hammers M, Komdeur J, Burke T, Dugdale HL, Richardson DS (2018) Spatio-temporal variation in lifelong telomere dynamics in a long-term ecological study. Journal of Animal Ecology, 87, 187–198.
2017
Bebbington K, Kingma SA, Fairfield E, Dugdale HL, Komdeur J, Spurgin L, Richardson DS (2017) Kinship and familiarity mitigate costs of social conflict between Seychelles warbler neighbors. PNAS, 114, E9036–E9045.
Edwards HA, Burke T, Dugdale HL (2017) Repeatable and heritable behavioural variation in a wild cooperative breeder. Behavioral Ecology, 28, 668-676.
Hammers M, Brouwer L (2017) Rescue behaviour in a social bird: removal of sticky ‘bird-catcher tree’ seeds by group members. Behaviour, 154, 403–411
van de Crommenacker J, Hammers M, van der Woude J, Louter M, Santema P, Richardson DS, Komdeur J (2017) Oxidative status and fitness components in the Seychelles warbler. Functional Ecology, 31, 1210–1219.
Gilroy DL, Phillips KP, Richardson DS, Oosterhout C (2017) Toll‐like receptor variation in the bottlenecked population of the Seychelles warbler: computer simulations see the ‘ghost of selection past’ and quantify the ‘drift debt’. Journal of Evolutionary Biology, 30, 1276–1287.
Kingma SA, Komdeur J, Burke T, Richardson DS (2017) Differential dispersal costs and sex-biased dispersal distance in a cooperatively breeding bird. Behavioral Ecology, 28, 1113–1121.
2016
Gilroy DL, van Oosterhout C, Komdeur J, Richardson DS (2016) Toll-like receptor variation in the bottlenecked population of the endangered Seychelles warbler. Animal Conservation, 20, 235–250.
Fairfield EA, Hutchings K, Gilroy DL, Kingma SA, Burke T, Komdeur J, Richardson DS (2016) The impact of conservation-driven translocations on blood parasite prevalence in the Seychelles warbler. Scientific Reports, 6, 628.
Bebbington K, Kingma SA, Fairfield EA, Spurgin LG, Komdeur J, Richardson, DS (2016). Consequences of sibling rivalry vary across life in a passerine bird. Behavioral Ecology, 28, 407–418.
Bebbington K, Spurgin LG, Fairfield EA, Dugdale HL, Komdeur J, Burke T, Richardson DS (2016) Telomere length reveals cumulative individual and transgenerational inbreeding effects in a passerine bird. Molecular Ecology, 25, 2949–2960.
Edwards HA, Dugdale HL, Richardson DS, Komdeur J, Burke T (2016) Exploration is dependent on reproductive state, not social state, in a cooperatively breeding bird. Behavioral Ecology, 27, 1889–1896.
Gilroy D, Oosterhout C, Komdeur J, Richardson DS (2016) Avian β-defensin variation in bottlenecked populations: the Seychelles warbler and other congeners. Conservation Genetics, 17, 1–14.
Hammers M, Komdeur J, Kingma SA, Hutchings K, Fairfield E, Gilroy D, Richardson DS (2016) Age-specific haemosporidian infection dynamics and survival in Seychelles warblers. Scientific Reports, 6, 29720.
Kingma SA, Komdeur J, Hammers M, Richardson DS (2016) The cost of prospecting for dispersal opportunities in a social bird. Biology Letters, 12, 20160316.
Kingma SA, Bebbington K, Hammers M, Richardson DS, Komdeur J (2016). Delayed dispersal and the cost and benefits of different routes to independent breeding in a cooperative breeding bird. Evolution, 70, 2595–2610.
Wright DJ, Brouwer L, Mannarelli ME, Burke T (2016) Social pairing of Seychelles warblers under reduced constraints: MHC, neutral heterozygosity, and age. Behavioral Ecology, 27, 295–303.
2011-2015
Edwards HA, Hajduk GK, Durieux G, Burke T, Dugdale HL (2015) No association between personality and candidate gene polymorphisms in a wild bird population. PLoS ONE, 10, e0138439.
Hammers M, Kingma SA, Bebbington K, van de Crommenacker J, Spurgin LG, Richardson DS, Burke TA, Dugdale HL, Komdeur J (2015) Senescence in the wild: Insights from a long-term study on Seychelles warblers. Experimental Gerontology, 71, 69–79.
Spurgin LG, Wright DJ, van der Velde M, Collar NJ, Komdeur J, Burke T, Richardson DS (2014) Museum DNA reveals the demographic history of the endangered Seychelles warbler. Evolutionary Applications, 7, 1134–1143.
Wright DJ, Spurgin LG, Collar NJ, Komdeur J, Burke T, Richardson DS (2014) The impact of translocations on neutral and functional genetic diversity within and among populations of the Seychelles warbler. Molecular Ecology, 23, 2165–2177.
Barrett ELB, Burke TA, Hammers M, Komdeur J, Richardson DS (2013) Telomere length and dynamics predict mortality in a wild longitudinal study. Molecular Ecology, 22, 249–259.
Hammers M, Richardson DS, Burke T, Komdeur J (2013) The impact of reproductive investment and early-life environmental conditions on senescence: support for the disposable soma hypothesis. Journal of Evolutionary Biology, 26, 1999–2007.
Barrett ELB, Boner W, Mulder E, Monaghan P, Verhulst S, Richardson DS (2012) Absolute standards as a useful addition to the avian quantitative PCR telomere assay. Journal of Avian Biology, 43, 571–576.
Brouwer L, Richardson DS, Komdeur J (2012) Helpers at the nest improve late-life offspring performance: evidence from a long-term study and a cross-foster experiment. PLoS ONE, 7, e33167.
van de Crommenacker J, Richardson DS, Koltz AM, Hutchings K, Komdeur J (2012) Parasitic infection and oxidative status are associated and vary with breeding activity in the Seychelles warbler. Proceedings of the Royal Society of London B, 279, 1466–1476.
Hammers M, Richardson DS, Burke T, Komdeur J (2012) Age-dependent terminal declines in reproductive output in a wild bird. PLoS ONE, 7, e40413.
van de Crommenacker J, Komdeur J, Richardson DS (2011) Assessing the cost of helping: the roles of body condition and oxidative balance in the Seychelles warbler (Acrocephalus sechellensis). PLoS ONE, 6, e26423.
2006-2010
Brouwer L, Barr I, van de Pol M, Burke T, Komdeur J, Richardson DS (2010) MHC-dependent survival in a wild population: evidence for hidden genetic benefits gained through extra-pair fertilizations. Molecular Ecology, 19, 3444–3455.
van de Crommenacker J, Komdeur J, Burke T, Richardson DS (2010) Spatio-temporal variation in territory quality and oxidative status: a natural experiment in the Seychelles warbler (Acrocephalus sechellensis). Journal of Animal Ecology, 80, 668–680.
Eikenaar C, Brouwer L, Komdeur J, Richardson DS (2010) Sex biased natal dispersal is not a fixed trait in a stable population of Seychelles warblers. Behaviour, 147, 1577–1590.
van Oers K, Richardson DS, Sæther SA, Komdeur J (2010) Reduced blood parasite prevalence with age in the Seychelles Warbler: selective mortality or suppression of infection? Journal of Ornithology, 151, 69–77.
Brouwer L, Tinbergen JM, Both C, Bristol R, Richardson DS, Komdeur J (2009) Experimental evidence for density-dependent reproduction in a cooperatively breeding passerine. Ecology, 90, 729–741.
Brouwer L, Groothuis TGG, Vedder O, Eikenaar C, Richardson DS, Komdeur J (2009) Do primary males physiologically suppress subordinate males? An experiment in a cooperatively breeding passerine. Ethology, 115, 576–587.
Eikenaar C, Richardson DS, Brouwer L, Bristol R, Komdeur J (2009) Experimental evaluation of sex differences in territory acquisition in a cooperatively breeding bird. Behavioral Ecology, 20, 207–214.
Eikenaar C, Komdeur J, Richardson DS (2008) Natal dispersal patterns are not associated with inbreeding avoidance in the Seychelles warbler. Journal of Evolutionary Biology, 21, 1106.
Eikenaar C, Richardson DS, Brouwer L, Komdeur J (2008) Sex biased natal dispersal in a closed, saturated population of Seychelles warblers Acrocephalus sechellensis. Journal of Avian Biology, 39, 73–80.
Brouwer L, Komdeur J, Richardson DS (2007) Heterozygosity-fitness correlations in a bottlenecked island species: a case study on the Seychelles warbler. Molecular Ecology, 16, 3134–3144.
Eikenaar C, Richardson DS, Brouwer L, Komdeur J (2007) Parent presence, delayed dispersal, and territory acquisition in the Seychelles warbler. Behavioral Ecology, 18, 874–879.
Komdeur J, Burke T, Richardson DS (2007) Explicit experimental evidence for the effectiveness of proximity as mate-guarding behaviour in reducing extra-pair fertilization in the Seychelles warbler. Molecular Ecology, 16, 3679–3688.
Komdeur J, Richardson DS (2007) Molecular ecology reveals the hidden complexities of the Seychelles warbler. Advances in the Study of Behavior, 37, 147–187.
Richardson DS, Burke T, Komdeur J (2007) Grandparent helpers: the adaptive significance of older, postdominant helpers in the Seychelles warbler. Evolution, 61, 2790–2800.
Brouwer L, Richardson DS, Eikenaar C, Komdeur J (2006) The role of group size and environmental factors on survival in a cooperatively breeding tropical passerine. Journal of Animal Ecology, 75, 1321–1329.
Hadfield JD, Richardson DS, Burke T (2006) Towards unbiased parentage assignment: combining genetic, behavioural and spatial data in a Bayesian framework. Molecular Ecology, 15, 3715–3730.
Komdeur J, Richardson D, Burke T (2006) Fitness consequences of cooperative breeding in the Seychelles warbler. Acta Zoologica Sinica, 52, 257–261.
2001-2005
Hansson B, Richardson DS (2005) Genetic variation in two endangered Acrocephalus species compared to a widespread congener: estimates based on functional and random loci. Animal Conservation, 8, 83–90.
Komdeur J (2005) No evidence for adaptive suppression of joint laying by dominant female Seychelles warblers: an experimental study. Behaviour, 142, 1669–1684.
Komdeur J, Daan S (2005) Breeding in the monsoon: semi-annual reproduction in the Seychelles warbler (Acrocephalus sechellensis). Journal of Ornithology, 146, 305–313.
Komdeur J, Pels MD (2005) Rescue of the Seychelles warbler on Cousin Island, Seychelles: the role of habitat restoration. Biological Conservation, 124, 15–26.
Richardson DS, Komdeur J, Burke T, Schantz von T (2005) MHC-based patterns of social and extra-pair mate choice in the Seychelles warbler. Proceedings of the Royal Society of London B, 272, 759–767.
van de Crommenacker J, Richardson DS, Groothuis TGG, Eising CM, Dekker AL, Komdeur J (2004) Testosterone, cuckoldry risk and extra-pair opportunities in the Seychelles warbler. Proceedings of the Royal Society of London B, 271, 1023–1031.
Komdeur J, Richardson DS, Burke T (2004) Experimental evidence that kin discrimination in the Seychelles warbler is based on association and not on genetic relatedness. Proceedings of the Royal Society of London B, 271, 963–969.
Komdeur J, Piersma T, Kraaijeveld K, Kraaijeveld-Smit F, Richardson DS (2004) Why Seychelles warblers fail to recolonize nearby islands: unwilling or unable to fly there? Ibis, 146, 298–302.
Richardson DS, Komdeur J, Burke T (2004) Inbreeding in the Seychelles warbler: environment-dependent maternal effects. Evolution, 58, 2037–2048.
Ridley J, Komdeur J, Sutherland WJ (2004) Incorporating territory compression into population models. Oikos, 105, 101–108.
Komdeur J (2003a) Daughters on request: about helpers and egg sexes in the Seychelles warbler. Proceedings of the Royal Society of London B, 270, 3–11.
Komdeur J (2003b) Adaptations and maladaptations to island living in the Seychelles Warbler. Ornithological Science, 2, 79–88.
Richardson DS, Westerdahl H (2003) MHC diversity in two Acrocephalus species: the outbred Great reed warbler and the inbred Seychelles warbler. Molecular Ecology, 12, 3523–3529.
Richardson DS, Burke T, Komdeur J (2003) Sex-specific associative learning cues and inclusive fitness benefits in the Seychelles warbler. Journal of Evolutionary Biology, 16, 854–861.
Richardson DS, Komdeur J, Burke T (2003) Altruism and infidelity among warblers. Nature, 422, 580–580.
Ridley J, Komdeur J, Sutherland WJ (2003) Population regulation in group-living birds: predictive models of the Seychelles warbler. Journal of Animal Ecology, 72, 588–598.
Komdeur J, Magrath MJL, Krackow S (2002) Pre-ovulation control of hatchling sex ratio in the Seychelles warbler. Proceedings of the Royal Society of London B, 269, 1067–1072.
Richardson DS, Burke T, Komdeur J (2002) Direct benefits and the evolution of female-biased cooperative breeding in Seychelles warblers. Evolution, 56, 2313–2321.
Dowling DK, Richardson DS, Blaakmeer K (2001) Feather mite loads influenced by salt exposure, age and reproductive stage in the Seychelles warbler Acrocephalus sechellensis. Journal of Avian Biology, 32, 364–369.
Dowling DK, Richardson DS, Komdeur J (2001) No effects of a feather mite on body condition, survivorship, or grooming behavior in the Seychelles warbler, Acrocephalus sechellensis. Behavioral Ecology and Sociobiology, 50, 257–262.
Komdeur J (2001) Mate guarding in the Seychelles warbler is energetically costly and adjusted to paternity risk. Proceedings of the Royal Society of London B, 268, 2103–2111.
Komdeur J, Edelaar P (2001a) Evidence that helping at the nest does not result in territory inheritance in the Seychelles warbler. Proceedings of the Royal Society of London B, 268, 2007–2012.
Komdeur J, Edelaar P (2001b) Male Seychelles warblers use territory budding to maximize lifetime fitness in a saturated environment. Behavioral Ecology, 12, 706–715.
Richardson DS, Jury FL, Blaakmeer K, Komdeur J, Burke T (2001) Parentage assignment and extra-group paternity in a cooperative breeder: the Seychelles warbler (Acrocephalus sechellensis). Molecular Ecology, 10, 2263–2273.
1996-2000
Eising CM, Blaakmeer KB, Komdeur J (2000) The importance of genetic variation for the viability of small avian populations the Seychelles warbler and the African marsh warbler. Ostrich, 71, 304–306.
Richardson DS, Jury FL, Dawson DA, Salgueiro P, Komdeur J, Burke T (2000) Fifty Seychelles warbler (Acrocephalus sechellensis) microsatellite loci polymorphic in Sylviidae species and their cross-species amplification in other passerine birds. Molecular Ecology, 9, 2226–2231.
Veen T, Richardson DS, Blaakmeer K, Komdeur J (2000) Experimental evidence for innate predator recognition in the Seychelles warbler. Proceedings of the Royal Society of London B, 267, 2253–2258.
Komdeur J, Kats RKH (1999) Predation risk affects trade-off between nest guarding and foraging in Seychelles warblers. Behavioral Ecology, 10, 648–658.
Komdeur J, Kraaijeveld-Smit F, Kraaijeveld K, Edelaar P (1999) Explicit experimental evidence for the role of mate guarding in minimizing loss of paternity in the Seychelles warbler. Proceedings of the Royal Society of London B, 266, 2075–2081.
Komdeur J (1998) Long-term fitness benefits of egg sex modification by the Seychelles warbler. Ecology Letters, 1, 56–62.
Komdeur J, Kappe A, van de Zande L (1998) Influence of population isolation on genetic variation and demography in Seychelles warblers: a field experiment. Animal Conservation, 1, 203–212.
Komdeur J (1997) Inter-island transfers and population dynamics of Seychelles Warblers Acrocephalus sechellensis. Bird Conservation International, 7, 7–26.
Komdeur J, Daan S, Tinbergen J, Mateman C (1997) Extreme adaptive modification in sex ratio of the Seychelles warbler’s eggs. Nature, 385, 522–525.
Komdeur J (1996a) Influence of age on reproductive performance in the Seychelles warbler. Behavioral Ecology, 7, 417–425.
Komdeur J (1996b) Facultative sex ratio bias in the offspring of Seychelles warblers. Proceedings of the Royal Society of London B, 263, 661–666.
Komdeur J (1996c) Seasonal timing of reproduction in a tropical bird, the Seychelles warbler: a field experiment using translocation. Journal of Biological Rhythms, 11, 333–346.
Komdeur J (1996d) Influence of helping and breeding experience on reproductive performance in the Seychelles warbler: a translocation experiment. Behavioral Ecology, 7, 326–333.
1992-1997
Komdeur J, Huffstadt A, Prast W, Castle G, Mileto R, Wattel J (1995) Transfer experiments of Seychelles warblers to new islands – changes in dispersal and helping-behavior. Animal Behaviour, 49, 695–708.
Komdeur J (1994a) Conserving the Seychelles warbler Acrocephalus sechellensis by translocation from Cousin Island to the islands of Aride and Cousine. Biological Conservation, 67, 143–152.
Komdeur J (1994b) Experimental-evidence for helping and hindering by previous offspring in the cooperative-breeding Seychelles warbler Acrocephalus sechellensis. Behavioral Ecology and Sociobiology, 34, 175–186.
Komdeur J (1994c) The effect of kinship on helping in the cooperative breeding Seychelles warbler (Acrocephalus sechellensis). Proceedings of the Royal Society of London B, 256, 47–52.
Catchpole CK, Komdeur J (1993) The song of the Seychelles Warbler Acrocephalus sechellensis, an island endemic. Ibis, 135, 190–195.
Komdeur J (1993) Fitness-related dispersal. Nature, 366, 23–24.
Komdeur J (1992) Importance of habitat saturation and territory quality for evolution of cooperative breeding in the Seychelles warbler. Nature, 358, 493–495.