Abstract
Biparental care is the dominant (81 %) form of parental care in birds. The degree of sexual selection and the resulting mating system and parental care type have been determined, in many cases, by inference from external characters of sexual dimorphism. The lack of information and the biological attributes of the tyrant flycatchers (e.g., low sexual dimorphism) make it difficult to determinate the parental care roles in most species. Tyrant flycatchers comprise a diverse bird family, but information on the reproductive behavior of many Tyrannid species is lacking. Our aim was to describe external sexual characters (morphology and coloration) and determine the parental care behavior at the nest in the Warbling Doradito (Pseudocolopteryx flaviventris), especially considering the potential role of sexual differences in relation to parental roles at nest. We studied the parental care behavior during two breeding seasons. Parents were captured to take morphological measurements and a blood sample for molecular sex determination. We found that parental care in the Warbling Doradito was biparental biased toward females, where the incubation was performed exclusively by females and the 74 % of activities of nestling brooding and feeding was performed by females. We also found sexual differences, slight in size and plumage, but more conspicuous in bill color. Despite the relatively slight sexual dichromatism of the Warbling Doradito, the parental care behavior in the nest was biased towards females, and the assistance of males to nestlings was highly variable and was not correlated with either clutch size or increasing nestling mass. Therefore, the evidence presented here suggest that Pseudocolopteryx genus may have an unusual social system, otherwise uncommon in tyrannids.
Zusammenfassung
Brutpflege und äußere Geschlechtsmerkmale beim Braunrücken-Sumpftyrann ( Pseudocolopteryx flaviventris ) Bei Vögeln ist die Brutpflege durch beide Elternteile die vorherrschende (81 %) Form der Brutpflege. Die Ausprägung der sexuellen Selektion und das daraus resultierende System von Balz und Brutpflege wurde sehr häufig nur durch das Schließen von äußeren Merkmalen auf einen Geschlechtsdimorphismus bestimmt. Zu wenig Informationen sowie die biologischen Eigenheiten wie z.B. ein schwach ausgeprägter Geschlechtsdimorphismus bei den Schreivögeln (Tyrranides), machen es bei den meisten Arten schwierig, die tatsächliche Rolle der beiden Elternteile in der Brutpflege festzustellen. Die Schreivögel stellen eine große, recht uneinheitliche Familie dar, aber über das Fortpflanzungsverhalten vieler ihrer Arten liegt nur wenig Information vor. Ziel dieser Studie war es, für den Braunrücken-Sumpftyrann (Pseudocolopteryx flaviventris) äußere Geschlechtsmerkmale (Morphologie, Färbung) zu beschreiben und das Brutpflegeverhalten am Nest zu bestimmen. Dabei wurde besonderes Augenmerk auf mögliche Geschlechtsunterschiede in der Brutpflege durch die beiden Eltern am Nest gelegt. Das Brutpflegevehalten wurde über zwei Brutzeiten hinweg beobachtet und die Elterntiere gefangen, um ihre Körpermaße zu bestimmen und Blutproben für eine molekulare Geschlechtsbestimmung zu entnehmen. Wir fanden heraus, dass beim Braunrücken-Sumpftyrann die Brutpflege eher von den Weibchen übernommen wurde: das Brüten selbst lag ausschließlich bei den Weibchen, und 74 % aller Aktivitäten ums Brüten und Füttern herum wurden ebenfalls von den Weibchen durchgeführt. Ferner fanden wir äußere Geschlechtsunterschiede: für Größe und Gefieder waren sie eher kleiner, deutlich auffälliger jedoch in der Schnabelfärbung. Trotz der relativ kleinen Geschlechtsunterschiede war das Brutpflegeverhalten am Nest bei den Weibchen stärker ausgeprägt; die Unterstützung durch die Männchen war sehr unterschiedlich und korrelierte nicht mit der Gelegegröße. Diese Ergebnisse legen nahe, dass das soziale System der Gattung Pseudocolopteryx möglicherweise anders und unüblich für die übrigen Tyranni ist.



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Ábalos R, Areta JI (2009) Historia natural y vocalizaciones del Doradito Limón (Pseudocolopteryx citreola) en Argentina. Ornitol Neotrop 20:215–230
Andersson S, Ornborg J, Andersson M (1998) Ultraviolet sexual dimorphism and assortative mating in blue tits. Proc R Soc Lond B 265:445–450
Beauchamp G (2003) Delayed maturation in birds in relation to social foraging and breeding competition. Evol Ecol Res 5:589–596
Birkhead TR, Møller AP (1992) Sperm Competition in Birds. Academic, London
Bostwick K, Zyskowski K (2001) Mechanical sounds and sexual dimorphism in the Crested Doradito. Condor 103:861–865
Chaves AV, Clozato CL, Lacerda DR, Sari HER, Santos FR (2008) Molecular taxonomy of Brazilian tyrant-flycatchers (Passeriformes: Tyrannidae). Mol Ecol Resour 8:1169–1177
Clutton-Brock TH (1991) The evolution of parental care. Princeton University Press, Princeton
Cockburn A (2006) Prevalence of different modes of parental care in birds. Proc R Soc Lond B 273:1375–1383
Cuthill IC, Bennett ATD, Partridge JC, Maier EJ (1999) Plumage reflectance and the objective assessment of avian sexual dichromatism. Am Nat 160:183–200
Dinelli LM (1933) El tiránido Pseudocolopteryx dinellianus y su nido. Hornero 5:221–222
Eaton MD (2005) Human vision fails to distinguish widespread sexual dichromatism among sexually ‘‘monochromatic’’ birds. Proc Natl Acad Sci USA 102:10942–10946
Emlen ST, Oring LW (1977) Ecology, sexual selection and the evolution of mating systems. Science 197:215–223
Fiorini VD, Rabuffetti FL (2003) Cuidado parental en el Churrinche (Pyrocephalus rubinus): contribución relativa del macho y de la hembra. Hornero 18:31–35
Fitzpatrick JW (2004) Family Tyrannidae. In: del Hoyo J, Elliott A, Christie DA (eds) Handbook of the Birds of the World, vol 9., Cotingas to pipits. Lynx, Barcelona, pp 110–462
Fontaine JJ, Martin TE (2006) Habitat selection responses of parents to offspring predation risk: an experimental test. Am Nat 168:811–818
Fridolfsson A, Ellegren H (1999) A simple and universal method for molecular sexing of nonratite birds. J Avian Biol 30:116–121
Ghalambor CK, Peluc SI, Martin TE (2013) Plasticity of parental care under the risk of predation: how much should parents reduce care? Biol Lett 9:20130154
Griffith SC, Owens IPF, Thuman KA (2002) Extra pair paternity in birds: a review of interspecific variation and adaptive function. Mol Ecol 11:2195–2212
Hair JF Jr, Anderson RE, Tatham RL, Black WC (1995) Multivariate data analysis. Prentice Hall, Upper Saddle River
Hellmayr CE (1927) Catalogue of birds of the Americas, part 5. Field Mus Nat Hist Publ Zool Ser 13:1–517
Hoffmann D, Rodriguez M (2011) Breeding biology and reproductive success of Polystictus superciliaris (Aves: Tyrannidae), an uncommon tyrant-flycatcher endemic to the highlands of eastern Brazil. Zoologia 28:305–311
Hunt S, Cuthill IC, Bennett ATD, Church SC, Partridge JC (2001) Is the ultraviolet waveband a special communication channel in avian mate choice? J Exp Biol 204:2499–2507
Isacch JP, Costa CSB, Rodríguez-Gallego L, Conde D, Escapa M, Gagliardini DA, Iribarne OO (2006) Distribution of saltmarsh plant communities associated with environmental factors along a latitudinal gradient on the south-west Atlantic coast. J Biogeogr 33:888–900
Ismar SMH, Chong NL, Igic B, Baird K, Ortiz-Catedral L, Fidler AE, Hauber ME (2011) Visual sensitivity, coloration and morphology of Red-tailed Tropicbirds Phaethon rubricauda breeding on the Kermadec Islands. N Z J Zool 38:29–42
Kendeigh SC (1952) Parental care and its evolution in birds. Ill Biol Monogr 22:1–356
Ketterson ED, Nolan V Jr (1994) Male parental behavior in birds. Annu Rev Ecol Syst 25:601–628
Lack D (1968) Ecological adaptations for breeding in birds. Methuen, London
Lawton SM, Lawton RO (1986) Heterochrony, deferred breeding, and avian sociality. Curr Ornithol 3:187–222
Martin TE, Geupel GR (1993) Nest-monitoring plots: methods for locating nests and monitoring success. J Field Ornithol 64:507–519
Massoni V, Reboreda JC, Lopez G, Aldatz M (2012) High coordination and equitable parental effort in the Rufous Hornero. Condor 114:564–570
Meyer de Schauensee R (1970) A guide to the birds of South America. Livingston, Wynnewood
Møller AP (2000) Male parental care, female reproductive success, and extrapair paternity. Behav Ecol 11:161–168
Muehter VR, Greene E, Ratcliffe L (1997) Delayed plumage maturation in Lazuli buntings: tests of the female mimicry and status signaling hypotheses. Behav Ecol Sociobiol 41:281–290
Narosky T, Salvador SA (1998) Nidificación de las aves Argentinas (Tyrannidae). Asociación Ornitológica del Plata, Buenos Aires
Narosky T, Yzurieta D (2010) Aves de Argentina y Uruguay—birds of Argentina and Uruguay: Guía de Identificación Edición Total—a field guide total edition, 16a edn. Vázquez Mazzini, Buenos Aires
Ortiz D, Aráoz R, Capllonch P (2006) Registros novedosos de doraditos (Pseudocolopteryx) en la provincia de Tucumán. Nuestras Aves 52:24–25
Pretelli MG (2015) Efecto de la fragmentación del pastizal sobre las aves en pastizales costeros de la región pampeana. Doctoral thesis dissertation, Universidad Nacional de Mar del Plata, Buenos Aires
Pretelli MG, Isacch JP, Cardoni DA (2013) Year-round abundance, richness and nesting of the bird assemblage of tall grasslands in the south-east pampas region, Argentina. Ardeola 60:327–343
Pretelli MG, Isacch JP, Cardoni DA (2016) Variation in parental care in the spectacled tyrant Hymenops perspicillatus is associated with increased nest predation in grassland fragments. J Ornithol 157:451–460
Ridgely RS, Tudor G (1994) The birds of South America, vol 2., The suboscines passerines. Oxford University Press, London
Roesler I (2009) El Doradito Oliváceo Pseudocolopteryx acutipennis en las pampas Argentinas: nuevos registros y comentarios sobre su historia natural. Cotinga 31:1–4
Sejberg D, Bensch S, Hasselquist D (2000) Nestling provisioning in polygynous Great Reed Warblers (Acrocephalus arundinaceus): do males bring larger prey to compensate for fewer nest visits? Behav Ecol Sociobiol 47:213–219
Silver R, Andrews H, Ball GF (1985) Parental care in an ecological perspective: a quantitative analysis of avian subfamilies. Am Zool 25:823–840
Székely T, Webb JN, Cuthill IC (2000) Mating patterns, sexual selection and parental care: an integral approach. In: Appolonio M, Festa-Bianchet M, Mainardi M (eds) Vertebrate mating systems. World Scientific, Singapore, pp 159–185
Székely T, Lislevand T, Figuerola J (2007) Sexual size dimorphism in birds. In: Blanckenhorn W, Fairbairn D, Székely T (eds) Sex, size and gender roles. Oxford University Press, Oxford, pp 27–37
Traylor MA Jr (1977) A classification of the tyrant flycatchers. Bull Mus Comp Zool 148:129–184
Trivers RL (1972) Parental investment and sexualselection. In: Campbell B (ed) Sexual selection and the descent of man, 1871–1971. Aldine, Chicago, pp 136–178
Verner J, Willson MF (1969) Mating systems, sexual dimorphism, and the role of male North American passerine birds in the nesting cycle. Ornithol Monogr 9:1–76
Walsh PS, Metzger DA, Higuchi R (1991) Chelex-100 as a medium for simple extraction of DNA for PCR-based typing from forensic material. Biotechniques 10:506–513
Wetmore A (1926) Observations on the birds of Argentina, Paraguay, Uruguay and Chile. Bull US Natl Mus 133:1–448
Zar JH (2010) Biostatistical analysis. Prentice Hall, Upper Saddle River
Acknowledgments
This paper benefitted from the comments of two anonymous reviewers. We appreciate the improvements in English usage made by Diego E. Metzadour. Financial support was provided by Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional de Mar del Plata (EXA 545/11), Agencia de Promoción Científica y Técnica (PICT 12-461) and Neotropical Grassland Conservancy.
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Communicated by C. G. Guglielmo.
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Cardoni, D.A., Pretelli, M.G., Isacch, J.P. et al. Parental care and external sexual characters in the Warbling Doradito (Pseudocolopteryx flaviventris). J Ornithol 158, 159–167 (2017). https://doi.org/10.1007/s10336-016-1378-7
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DOI: https://doi.org/10.1007/s10336-016-1378-7


