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001-es BibID:BIBFORM117787
035-os BibID:(cikkazonosító)20231734 (WoS)001139003900014 (Scopus)85182086874
Első szerző:Hauber, Mark E.
Cím:Nest architecture influences host use by avian brood parasites and is shaped by coevolutionary dynamics / Mark E. Hauber, Jenő Nagy, Catherine Sheard, Nicholas D. Antonson, Sally E. Street, Susan D. Healy, Kevin N. Lala, Mark C. Mainwaring
Dátum:2024
ISSN:0962-8452
Megjegyzések:Brood (social) parasites and their hosts exhibit a wide range of adaptations and counter-adaptations as part of their ongoing coevolutionary arms races. Obligate avian brood parasites are expected to use potential host species with more easily accessible nests, while potential hosts are expected to evade parasitism by building more concealed nests that are difficult for parasites to enter and in which to lay eggs. We used phylogenetically informed comparative analyses, a global database of the world's brood parasites, their host species, and the design of avian host and non-host nests (approx. 6200 bird species) to examine first, whether parasites preferentially target host species that build open nests and, second, whether host species that build enclosed nests are more likely to be targeted by specialist parasites. We found that species building more accessible nests are more likely to serve as hosts, while host species with some of the more inaccessible nests are targeted by more specialist brood parasites. Furthermore, evolutionary-transition analyses demonstrate that host species building enclosed nests frequently evolve to become non-hosts. We conclude that nest architecture and the accessibility of nests for parasitism represent a critical stage of the ongoing coevolutionary arms race between avian brood parasites and their hosts.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
anti-parasite defences
arms race
birds
evolution
nest
phylogenetic analysis
Megjelenés:Proceedings Of The Royal Society B-Biological Sciences. - 291 : 2014 (2024), p. 1-12. -
További szerzők:Nagy Jenő (1989-) (biológus) Sheard, Catherine Antonson, Nicholas D. Street, Sally E. Healy, Susan D. Lala, Kevin N. Mainwaring, Mark C.
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2.

001-es BibID:BIBFORM100878
035-os BibID:(WoS)000768095500001 (Scopus)85126096587
Első szerző:Hauber, Mark E.
Cím:Clutch size and the rejection of parasitic eggs: a comparative test of the maternal investment hypothesis / Mark E. Hauber, Christina Riehl, Jenő Nagy
Dátum:2022
ISSN:0269-7653
Megjegyzések:Obligate brood parasitic birds lay their eggs in the nests of other species, reducing the host's own reproductive output. To circumvent these fitness costs, many-but not all-host species have evolved the ability to recognize and reject brood parasitic eggs. What factors constrain egg rejection, and why do host species vary in their likelihood of rejection? Previous comparative studies have found that egg rejection rates covary with several biotic factors (including larger body size, smaller relative brain size, and more northerly breeding latitudes), but much behavioral variation in the occurrence of egg rejection remains unexplained. In this study, we test a corollary of the maternal investment hypothesis, by assessing whether species with higher clutch sizes are more likely to eliminate parasitic eggs. We examined two published data sets comprising over 200 unique bird species, controlling for phylogeny and other known interspecific correlates of egg rejection rates. Contrary to the prediction, we found no evidence for a positive relationship between clutch size and egg rejection rate. Rather, our analyses suggest a weak but consistent negative relationship between absolute and relative metrics of clutch size versus egg rejection rate across species. These results are instead consistent with two previously proposed alternative hypotheses: that egg rejection is constrained by a trade-off between maternal investment and anti-parasitic defenses, possibly mediated by endocrine mechanisms linked to parental care, and/or that cognitive decision rules facilitate the detection of dissimilar eggs in smaller clutches.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
endocrine trade-off
egg rejection
host-parasite coevolution
relative clutch size
Megjelenés:Evolutionary Ecology. - 36 : 2 (2022), p. 263-272. -
További szerzők:Riehl, Christina Nagy Jenő (1989-) (biológus)
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3.

001-es BibID:BIBFORM097841
035-os BibID:(WoS)000736063200003 (Scopus)85119495704
Első szerző:Mainwaring, Mark C.
Cím:Sex-specific contributions to nest building in birds / Mark C. Mainwaring, Jenő Nagy, Mark E. Hauber
Dátum:2021
ISSN:1045-2249
Megjegyzések:The causes and consequences of interspecific variation in sex-specific contributions to animal parental care are relatively well understood during pregnancy or incubation and during offspring provisioning, but comparative patterns of sex-biased investment during nest-, den-, or other shelter-building have been almost completely overlooked. This is surprising because birthing shelters' protective properties have important fitness consequences for both parents and offspring. Here, we address this gap in our knowledge by testing predictions concerning sex-specific contributions to avian nest building in more than 500 species of Western Palearctic birds in relation to the time available to breed and sex-specific reproductive effort, while also examining correlates with nesting site and nest structure. Using multivariate phylogenetic comparative and path analysis approaches, we found that, opposite to what had been predicted, species in which females build nests alone have shorter breeding seasons and breed at higher latitudes. In addition, species in which females lay larger clutch sizes and incubate eggs alone are more likely to have nests built by females alone, again countering predictions that reproductive contributions are not traded-off between the sexes. Finally, however, sex-specific nest building contributions were predictably related to nest site and structure, as species in which females built nests alone were more likely to have open cup nests relative to enclosed, domed nests of species in which both parents build. Our study provides important new insights, and generates several new questions for experimental research into the adaptive dynamics of sex-specific contributions prior or at the onset of parental care.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
birds
incubation
nest building
nest structure
offspring provisioning
parental care
Western Palearctic
Megjelenés:Behavioral Ecology. - 32 : 6 (2021), p. 1075-1085. -
További szerzők:Nagy Jenő (1989-) (biológus) Hauber, Mark E.
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4.

001-es BibID:BIBFORM118907
035-os BibID:(cikkazonosító)12 (WoS)001152827800001 (Scopus)85186206545
Első szerző:Nagy Jenő (biológus)
Cím:Plumage and eggshell colouration covary with the level of sex-specifc parental contributions to nest building in birds / Jenő Nagy, Mark E. Hauber, Viktor Löki, Mark C. Mainwaring
Dátum:2024
ISSN:0028-1042
Megjegyzések:Interspecific variation in sex-specific contributions to prenatal parental care, including avian nest building, is becoming increasingly better understood as we amass more information on more species. We examined whether sex-specific nest building contributions covary with the colouration of parents and their eggs in 521 species of Western Palearctic birds. Having colourful plumage and laying colourful eggs are costly because of the deposition of pigments in feathers and eggs and/or forming costly nanostructural substrates in feathers, and so it might be expected that those costs covary with the costs of nest building at the level of individuals and/or across species to produce of a suite of codivergent traits. Using a phylogenetically informed approach, we tested the hypothesis that species in which females alone invest energy building nests exhibit less sexual plumage dichromatism. However, we found comparative support for the opposite of this prediction. We then tested that species in which females alone build nests lay more colourful, and costlier, eggs because the dual costs of building nests and laying colourful eggs can only be borne by higher quality individuals. As expected, we found that species in which females build nests alone or together with males are more likely to lay colourfully pigmented eggs relative to species in which only males build nests. Finally, stochastic character mapping provided evidence of the repeated evolution of female-only nest building. Interspecific sex differences in plumage colouration therefore covary in a complex manner with female pre- (nest building) and post-copulatory (egg production) investment in reproduction.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
birds
colour dichromatism
egg colour
nest building
parental care
Megjelenés:Naturwissenschaften. - 111 : 2 (2024), p. 1-10. -
További szerzők:Hauber, Mark E. Löki Viktor (1989-) (biológus) Mainwaring, Mark C.
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5.

001-es BibID:BIBFORM115767
035-os BibID:(WoS)001098010400001 (Scopus)85175566565
Első szerző:Nagy Jenő (biológus)
Cím:Biogeographic history, egg colouration, and habitat selection in Turdus thrushes (Aves: Turdidae) / Jenő Nagy, Andrew G. Fulmer, Viktor Löki, Francisco Ruiz?Raya, Mark E. Hauber
Dátum:2023
ISSN:2676-8615 2676-8607
Megjegyzések:Despite broad interest and recent experimentation, there is no single ecological model accounting for the adaptive significance of the diversity of avian eggshell colouration. The often blue-green eggs of Turdus thrushes are a charismatic example of this, having long captured cultural and scientific attention. Although the biology and evolutionary history of "true" thrushes is well understood, little is known about correlated evolution between shifts in habitat and eggshell pigmentation, and how these shifts map with Turdus biogeography. We applied phylogenetic comparative methods to assess the evolutionary timing of divergence and variation of life history traits and eggshell colouration and maculation presence in the genus. We found that eggshell colour diversified independently on several occasions in the past 11 million years, with much of the variation occurring within the last 4 million years. The majority of Turdus species lay blue-green eggs and also tend to be sedentary and forest-dwelling. Diet generalist species and species which have transitioned to a forest habitat are more likely to lay white eggs (10% of studied species). In turn, lineages in any habitat were more likely to transition to blue-green eggs. We found that variation in egg colour is increased in some clades, of which two lineages radiated in South America and the East Palearctic, in the past 2?4 million years. These findings provide support for the hypothesis that white eggs are more conspicuous to predators in open environments and that multiple, non-mutually exclusive constraints operate on the adaptive function of avian eggshell colour.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény hazai lapban
folyóiratcikk
correlated evolution
eggshell pigmentation
life history
passeriformes
Megjelenés:Biologia Futura. - 74 (2023), p. 1-8. -
További szerzők:Fulmer, Andrew G. Löki Viktor (1989-) (biológus) Ruiz-Raya, Francisco Hauber, Mark E.
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6.

001-es BibID:BIBFORM082239
035-os BibID:(WoS)000504419700022 (Scopus)85075262602
Első szerző:Nagy Jenő (biológus)
Cím:Correlated evolution of nest and egg characteristics in birds / Jenő Nagy, Mark E.Hauber, Ian R.Hartley, Mark C. Mainwaring
Dátum:2019
ISSN:0003-3472
Megjegyzések:Correlational selection is defined as selection for adaptive character combinations, and it therefore favours combinations of coevolved traits via phenotypic integration. Whereas the evolution of avian nestbuilding and egg-laying characteristics are well understood, their correlated dynamics remain overlooked. Here, we examined patterns of correlated evolution between nest, egg and clutch characteristics in 855 species of birds from 90 families, representing nearly 9% and 33% of avian species- and familylevel diversity. We show that the ancestral state of birds' nests was semi-open with nest sites having since become progressively more open over time. Furthermore, nest characteristics appear to have influenced egg-laying patterns in that while semi-open nests with variable clutch sizes were probably ancestral, clutch sizes have declined over evolutionary time in both open and closed nests. Ancestrally, avian eggs were also large, heavy and either elliptic or round, and there have been high transition rates from elliptic to round eggs in open nests and vice versa in closed nests. Ancestrally, both unpigmented (white) and pigmented (blueebrown) eggs were laid in open nests, although blueebrown eggs have transitioned more to white over time in open and closed nests, independently. We conclude that there has been a remarkable level of correlated evolution between the nest and egg characteristics of birds, which supports scenarios of correlational selection on both of these extended avian phenotypes.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
bird
comparative analysis
correlated evolution
egg
nest
Megjelenés:Animal Behaviour. - 158 (2019), p. 211-225. -
További szerzők:Hauber, Mark E. Hartley, Ian R. Mainwaring, Mark C.
Pályázati támogatás:HJ Van Cleave Professorship
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EMET No. NTP-EFÖ-P-15-A-0495
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