Conspecific olfactory preferences and interspecific divergence in odor cues in a chickadee hybrid zone

Huynh, Alex Van; Rice, Amber M.

doi:10.1002/ece3.5497

Cited by 26 publications

(12 citation statements)

References 127 publications

(217 reference statements)

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“…Most of the studies included in our comparative analysis did not test birds’ ability to discriminate between the sexes, but evidence for sex discrimination was found in all six of the studies that did (Zhang et al ., 2010; Whittaker et al ., 2011a; Amo et al ., 2012; Mihailova, 2014; Grieves et al ., 2019a; Van Huynh & Rice, 2019). In breeding‐condition Passeriformes, both sexes spent more time with male odour in dark‐eyed juncos (Whittaker et al ., 2011a) and spotless starlings ( Sturnus unicolor ; Amo et al ., 2012).…”

Section: Discussionmentioning

confidence: 99%

“…In breeding‐condition Passeriformes, both sexes spent more time with male odour in dark‐eyed juncos (Whittaker et al ., 2011a) and spotless starlings ( Sturnus unicolor ; Amo et al ., 2012). By contrast, both sexes spent more time with opposite sex odour in black‐capped chickadees ( Poecile atricapillus ), Carolina chickadees ( Poecile carolinensis ; Van Huynh & Rice, 2019), and song sparrows (Grieves et al ., 2019a). In Psittaciformes, female budgerigars ( Melopsittacus undulatus ) spent more time with male odour (Zhang et al ., 2010), and female crimson rosellas ( Platycercus elegans ) spent more time on nest boxes treated with male odour than female odour (Mihailova, 2014), suggesting a preference for these odour types.…”

Section: Discussionmentioning

confidence: 99%

“…There is growing evidence for avian olfactory sex discrimination in the literature (e.g. Zhang et al ., 2010; Whittaker et al ., 2011a; Amo et al ., 2012; Grieves et al ., 2019a; Van Huynh & Rice, 2019). Additional experiments should be designed to test for evidence of olfactory discrimination based on indicators of genetic quality and compatibility such as genome‐wide heterozygosity (Whittaker et al ., 2019a) and MHC genotype (Grieves et al ., 2019c).…”

Section: Recommendations For Future Researchmentioning

confidence: 99%

“…Fortunately, our understanding of avian chemical communication is growing rapidly. Indeed, birds use smell in intraspecific social contexts such as species discrimination (Zhang et al ., 2013; Krause et al ., 2014; Van Huynh & Rice, 2019), mate recognition (Bonadonna & Nevitt, 2004), kin recognition (Coffin, Watters & Mateo, 2011; Bonadonna & Sanz‐Aguilar, 2012; Krause et al ., 2012; Caspers, Gagliardo & Krause, 2015; Caspers et al ., 2017), individual recognition (Bonadonna et al ., 2007; Bonadonna, Caro & Brooke, 2009; Fracasso et al ., 2018), distinguishing sex (Hirao, Aoyama & Sugita, 2009; Whittaker et al ., 2011a; Amo et al ., 2012; Grieves, Bernards & MacDougall‐Shackleton, 2019a), and distinguishing the MHC genotype of potential mates (Leclaire et al ., 2017; Grieves et al ., 2019c).…”

Section: Introductionmentioning

confidence: 99%

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Olfactory camouflage and communication in birds

Grieves

Gilles

Cuthill³

et al. 2022

Biological Reviews

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Smell is a sensory modality that is rarely considered in birds, but evidence is mounting that olfaction is an important aspect of avian behaviour and ecology. The uropygial gland produces an odoriferous secretion (preen oil) that can differ seasonally and between the sexes. These differences are hypothesized to function in olfactory camouflage, i.e. minimizing detection by nest predators (olfactory crypsis hypothesis), and/or intraspecific olfactory communication, particularly during breeding (sex semiochemical hypothesis). However, evidence for seasonal and sex differences in preen oil is mixed, with some studies finding differences and others not, and direct evidence for the putative function(s) of seasonal variation and sex differences in preen oil remains limited. We conducted a systematic review of the evidence for such changes in preen oil chemical composition, finding seasonal differences in 95% of species (57/60 species in 35 studies) and sex differences in 47% of species (28/59 species in 46 studies). We then conducted phylogenetic comparative analyses using data from 59 bird species to evaluate evidence for both the olfactory crypsis and sex semiochemical hypotheses. Seasonal differences were more likely in the incubating than non‐incubating sex in ground‐nesting species, but were equally likely regardless of incubation strategy in non‐ground‐nesting species. This result supports the olfactory crypsis hypothesis, if ground nesters are more vulnerable to olfactorily searching predators than non‐ground nesters. Sex differences were more likely in species with uniparental than biparental incubation and during breeding than non‐breeding, consistent with both the olfactory crypsis and sex semiochemical hypotheses. At present, the data do not allow us to disentangle these two hypotheses, but we provide recommendations that will enable researchers to do so.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Recommendations For Future Researchmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Olfactory camouflage and communication in birds

Grieves

Gilles

Cuthill³

et al. 2022

Biological Reviews

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“…Further, much recent behavioral work has demonstrated that birds use odor in many important ecological contexts, such as in mate choice and species recognition (Bonadonna and Mardon 2013, Zhang et al 2013, Van Huynh and Rice 2019, kin recognition (Fracasso et al 2019), predator avoidance (Amo et al 2008, Roth et al 2008, Stanbury and Briskie 2015, Lee 2021, nesting (Petit et al 2002, Gwinner and Berger 2008, Shutler 2019, foraging (Hutchinson and Wenzel 1980, Hiltpold and Shriver 2018, Saavedra and Amo 2018a, Potier et al 2019, Potier 2020, and navigation (Pollonara et al 2015, Abolaffio et al 2018, Zannoni et al 2020. Here, we assess the ability for birds to cue in on plant volatiles to locate insect prey.…”

Section: Introductionmentioning

confidence: 99%

Tritrophic interactions with avian predators: the effect of host plant species and herbivore-induced plant volatiles on recruiting avian predators

Nguyen¹,

McGrath²,

McNamara³

et al. 2022

JFO

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Herbivore-induced plant volatiles (HIPVs) are important signaling compounds released by plants upon wounding. These compounds have been shown to mediate tritrophic interactions in recruiting insect predators and parasitoids. Recent work has begun to show that avian species, which were once thought to have a very limited sense of smell, can cue in on these HIPVs to find insect prey. Here, we test the ability for two general HIPVs, methyl jasmonate and methyl salicylate, to recruit avian predators. We test the recruitment efficacies of these HIPVs across four different host plant species, black walnut (Juglans nigra), red maple (Acer rubum), cattail (Typha latifolia), and wheat (Triticum aestivum), and use clay caterpillars to quantify predation by insectivorous birds. We found no significant differences in predation between treatment groups across any of our host plants. However, there was a nearly significant effect of methyl salicylate in black-walnut trees. Interestingly, our results did show a significant effect of host plant species on predation levels. The two tree species, particularly black walnut, had higher levels of predation than the herbaceous species. We discuss the implications of these results and suggest a number of ideas and suggestions for future studies investigating the role of HIPVs in attracting insectivorous birds.RESUMEN. Los compuestos volátiles de plantas inducidos por herbívoros (HIPV, por sus siglas en inglés) son importantes compuestos de señalización liberados por las plantas al sufrir un daño. Se ha demostrado que estos compuestos median interacciones tritróficas en el reclutamiento de insectos depredadores y parasitoides. Trabajos recientes han comenzado a mostrar que las especies de aves, que alguna vez se pensó que tenían un sentido del olfato muy limitado, pueden aprovechar estos HIPV para encontrar sus presas, insectos. Aquí, probamos la capacidad de dos HIPV comunes, jasmonato de metilo y salicilato de metilo, para reclutar aves depredadoras. Probamos las eficacias de reclutamiento de estos HIPV en cuatro especies diferentes de plantas hospederas, nogal negro (Juglans nigra), arce rojo (Acer rubum), totora (Typha latifolia) y trigo (Triticum aestivum), y usamos orugas de arcilla para cuantificar la depredación por aves insectívoras. No encontramos diferencias significativas en la depredación entre los grupos de tratamiento en ninguna de nuestras plantas hospederas. Sin embargo, hubo un efecto casi significativo del salicilato de metilo en los nogales negros. Curiosamente, nuestros resultados mostraron un efecto significativo de las especies de plantas hospederas sobre los niveles de depredación. Las dos especies de árboles, particularmente el nogal negro, tuvieron niveles más altos de depredación que las especies herbáceas. Discutimos las implicaciones de estos resultados y sugerimos una serie de ideas y sugerencias para futuros estudios que investiguen el papel de los HIPV en la atracción de aves insectívoras.

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Experimentally testing mate preference in an avian system with unidirectional bill color introgression

McDiarmid

Finch

Peso

et al. 2023

Ecology and Evolution

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Mating behavior can play a key role in speciation by inhibiting or facilitating gene flow between closely related taxa. Hybrid zones facilitate a direct examination of mating behavior and the traits involved in establishing species barriers. The long‐tailed finch (Poephila acuticauda) has two hybridizing subspecies that differ in bill color (red and yellow), and the yellow bill phenotype appears to have introgressed ~350 km eastward following secondary contact. To examine the role of mate choice on bill color introgression, we performed behavioral assays using natural and manipulated bill colors. We found an assortative female mating preference for males of their own subspecies when bill color was not manipulated. However, we did not find this assortative preference in trials based on artificially manipulated bill color. This could suggest that assortative preference is not fixed entirely on bill color and instead may be based on a different trait (e.g., song) or a combination of traits, or alternatively may be due to lower statistical power alongside the bill manipulations being unconvincing to the female choosers. Intriguingly, we find a bias in the inheritance of bill color in captive bred F1 hybrid females. Previous modeling suggests that assortative mate preference and this kind of partial dominance in the underlying genes may together contribute to introgression, making the genetic architecture of bill color in this system a priority for future research.

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Conspecific olfactory preferences and interspecific divergence in odor cues in a chickadee hybrid zone

Cited by 26 publications

References 127 publications

Olfactory camouflage and communication in birds

Olfactory camouflage and communication in birds

Tritrophic interactions with avian predators: the effect of host plant species and herbivore-induced plant volatiles on recruiting avian predators

Experimentally testing mate preference in an avian system with unidirectional bill color introgression

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