Sex and Age Effects on Monk Parakeet Home-Range Variation in the Urban Habitat

Senar, Juan Carlos; Moyà, Aura; Pujol, Jorge; Tomás, Xavier; Hatchwell, Ben J.

doi:10.3390/d13120648

Cited by 8 publications

(5 citation statements)

References 38 publications

(61 reference statements)

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“…While we do not explicitly find evidence against, we found no support for the group membership hypothesis . If vocal convergence was occurring at the group level, we would expect a stronger signal for dialects or clinal variation at the park level compared to city level, because movement between parks is likely very limited ( Senar et al 2021 ). Instead, our results demonstrate strong dialect differences at the city level.…”

Section: Discussionmentioning

confidence: 99%

Multilevel Bayesian analysis of monk parakeet contact calls shows dialects between European cities

Smeele,

Tyndel,

Aplin

et al. 2023

Behavioral Ecology

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Geographic differences in vocalizations provide strong evidence for animal culture, with patterns likely arising from generations of social learning and transmission. Most studies on the evolution of avian vocal variation have predominantly focused on fixed repertoire, territorial song in passerine birds. The study of vocal communication in open-ended learners and in contexts where vocalizations serve other functions is therefore necessary for a more comprehensive understanding of vocal dialect evolution. Parrots are open-ended vocal production learners that use vocalizations for social contact and coordination. Geographic variation in parrot vocalizations typically take the form of either distinct regional variations known as dialects or graded variation based on geographic distance known as clinal variation. In this study, we recorded monk parakeets (Myiopsitta monachus) across multiple spatial scales (i.e., parks and cities) in their European invasive range. We then compared calls using a multilevel Bayesian model and sensitivity analysis, with this novel approach allowing us to explicitly compare vocalizations at multiple spatial scales. We found support for founder effects and/or cultural drift at the city level, consistent with passive cultural processes leading to large-scale dialect differences. We did not find a strong signal for dialect or clinal differences between parks within cities, suggesting that birds did not actively converge on a group level signal, as expected under the group membership hypothesis. We demonstrate the robustness of our findings and offer an explanation that unifies the results of prior monk parakeet vocalization studies.

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Section: Discussionmentioning

confidence: 99%

Multilevel Bayesian analysis of monk parakeet contact calls shows dialects between European cities

Smeele,

Tyndel,

Aplin

et al. 2023

Behavioral Ecology

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show abstract

“…Overall, our results provide support for the cultural drift hypothesis , while finding no support for the group membership hypothesis . If vocal convergence was occurring at the group level, we would expect a stronger signal for dialects or clinal variation at the park level compared to city level, because movement between parks is likely very limited (Senar, Moyà, et al 2021). Instead, our results demonstrate strong dialect differences at the city level.…”

Section: Discussionmentioning

confidence: 99%

Multi-level Bayesian analysis of monk parakeet contact calls shows dialects between European cities

Smeele

Tyndel

Aplin

et al. 2022

Preprint

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Geographic differences in vocal dialects have provided strong evidence for animal culture, with patterns likely arising from generations of social learning and transmission. The current knowledge on the evolution of vocal dialects has predominantly focused on fixed repertoire, territorial song. The study of vocal dialects in open-ended flexible learners and in contexts where vocalisations serve other functions is therefore necessary for a more comprehensive understanding of vocal dialect evolution. Parrots are open-ended vocal learners where vocalisations are used for social contact and coordination. Here, we recorded monk parakeets (Myiopsitta monachus) across multiple spatial and social scales in their European invasive range. We then compared calls using a multi-level Bayesian model and sensitivity analysis, with this novel approach allowing us to explicitly compare dialects at multiple spatial scales, even in unmarked populations. We found support for founder effects and/or cultural drift at the city level, consistent with passive cultural processes leading to large scale dialect differences. We did not find a strong signal for dialect differences between groups within cities, suggesting groups did not actively converge on a group level signal, as expected under the group membership hypothesis. We demonstrate how our sensitivity analysis highlights the robustness of the results and offer an explanation that unifies the results of prior monk parakeet dialect studies.

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“…The coordinates of presence of the monk parakeet were obtained from the Global Biodiversity Information Facility platform (GBIF, 2021; 239 594 points) and field records (30 points). The spatial correlation between coordinates decreased considering a buffer circular area of 1.22 ha between each record, in function of the home range of this species (Senar et al, 2021). The points that were outside this threshold were eliminated and the coordinates duplicated with spThin (Aiello-Lammens et al, 2015) and remove.duplicates (Bivand et al, 2013;R Core Team, 2021) packages, respectively.…”

Section: Materials and Methods Study Area And Records Of Presencementioning

confidence: 99%

Geographic distribution prediction of an invading species in Mexico: the case of the monk parakeet (Myiopsitta monachus)

Salazar–Borunda,

Valdez–Abdo,

Pereda Solis

et al. 2024

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Objective: To determine the potential distribution of the monk parakeet (Myiopsitta monachus) in Mexico. Design/methodology/approach: The study generated the model with confirmed presences of the species, the MaxEnt algorithm, and bioclimatic and elevation information. The evaluation, calibration and selection were carried out with the kuenm package in R. The model generated was projected to the geographic space of Mexico. Results: The model estimated the most favorable areas for the species in Mexico, based on the similarity of the climate and elevation conditions of the sites with its natural distribution. The most favorable sites for the species are distributed in the central–southern regions of the country. Variables influencing its distribution are derived from temperature, precipitation and elevation. Limitations on study/implications: The model can contribute to the planning of management and monitoring strategies that mitigate the invasion of this species. Findings/conclusions: The areas in Mexico where there is a high risk of invasion by the monk parakeet were identified.

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Sex and Age Effects on Monk Parakeet Home-Range Variation in the Urban Habitat

Cited by 8 publications

References 38 publications

Multilevel Bayesian analysis of monk parakeet contact calls shows dialects between European cities

Multilevel Bayesian analysis of monk parakeet contact calls shows dialects between European cities

Multi-level Bayesian analysis of monk parakeet contact calls shows dialects between European cities

Geographic distribution prediction of an invading species in Mexico: the case of the monk parakeet (Myiopsitta monachus)

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