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13 results for “Monk parakeet”
Fig. 1 in New locality of the invasive Monk parakeet Myiopsitta monachus (Boddaert, 1783) in Greece
Fig. 1. Map of Athens (After: https://www.posters.bg/marketplace/athens-greece-city-mapwhite-v105257) with the locations of the sites of records of M. monachus: Zoological garden, Athens (1); National Garden, Athens (2); Port of Piraeus (3, present study).
Fig. 3 in New locality of the invasive Monk parakeet Myiopsitta monachus (Boddaert, 1783) in Greece
Fig. 3. Adult Monk parakeet Myiopsitta monachus (Boddaert, 1783), National Garden, Athens, 22.04.2024. Photograph: Zlatozar Z. Boev.
Fig. 2 in New locality of the invasive Monk parakeet Myiopsitta monachus (Boddaert, 1783) in Greece
Fig. 2. Adult Monk parakeet Myiopsitta monachus (Boddaert, 1783), Piraeus, 21.04.2024. Photograph: Zlatozar Z. Boev.
Social association of monk parakeets in relation to proximity and relatedness
<p>Monk parakeets are social parrots that live in loose colonies, often building communal nests and breeding cooperatively. Relatives are clustered within nests and within colonies. Data was collected to test the hypothesis that social associations of monk parakeets when away from their nests (foraging, collecting nest material, etc) are driven by either the spatial proximity of their nests and/or by their relatedness. The dataset includes information on the identities of all birds that could potentially associate with a focal bird when away from their respective nests, an index of their association strength (calculated using the simple ratio index), the distance between their respective nests, the dyadic relatedness of the birds estimated using microsatellite genotypes, the number of times the two birds were seen together, and the total number of times the focal bird was observed. Data are separated into different files according to the year of data collection (2018 or 2019) to avoid pseudoreplication. Additional files exclude data from each year collected at a feeding station; these data files relate to a conservative anlaysis in case the supply of supplementary food affected social associations. An additional file contains data only for birds whose nests were in the same tree; this file was for an analysis of the effect of relatedness on social association while controlling for nest proximity. Finally, a file is also included that contains the 2018 as described above, but with dyads defined by sex (male-male, female-male or female-male). Each data file relates to a specific analysis in the paper. The conclusion is that monk parakeets do have specific social associations with conspecifics, and that these are infleuenced by nest proximity but not by genetic relatedness.</p>
Social association of monk parakeets in relation to proximity and relatedness
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Monk parakeets “test the waters” when forming new relationships
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Fine-scale genetic structure reflects limited and coordinated dispersal in the colonial monk parakeet, Myiopsitta monachus
<p>The genetic structure of animal populations has considerable behavioural, ecological and evolutionary implications and may arise from various demographic traits. Here, we use observational field data and molecular genetics to determine the genetic structure of an invasive population of monk parakeets, <i><span>Myiopsitta monachus</span></i>, at a range of spatial scales, and investigate the demographic processes that generate the observed structure. Monk parakeets construct large nests that can house several pairs occupying separate chambers; these nests are often aggregated within nesting trees. We determined patterns of relatedness within compound nests, within nesting trees and between trees. Spatial autocorrelation analyses of pairwise genetic relatedness revealed fine-scale genetic structure with relatives of both sexes spatially clustered within, but not beyond, nesting trees. In addition, males were more related to males sharing their compound nests than to other males occupying the same nesting tree. By contrast, males and females within compound nests were not significantly more closely related than elsewhere in the same tree, and we found no evidence for inbreeding. Adults showed high breeding site fidelity between years despite considerable disturbance of nest sites. Natal dispersal was female-biased, but dispersal distances were relatively short with some natal philopatry observed in both sexes. Sibling coalitions, typically of males, were observed amongst both philopatric and dispersing birds. Our results show significant clustering of kin within compound nests and nesting trees resulting from limited and coordinated natal dispersal, with subsequent breeding site fidelity. The resulting genetic structure has implications for social behaviour in this unusual parrot species.</p>
Data from: Shared genetic diversity across the global invasive range of the Monk parakeet suggests a common restricted geographic origin and the possibility of convergent selection
While genetic diversity is hypothesized to be an important factor explaining invasion success, there is no consensus yet on how variation in source populations or demographic processes affects invasiveness. We used mitochondrial DNA haplotypic and microsatellite genotypic data to investigate levels of genetic variation and reconstruct the history of replicate invasions on three continents in a globally invasive bird, the monk parakeet (Myiopsitta monachus). We evaluated whether genetic diversity at invasive sites could be explained by (i) the native source populations from which they were derived and (ii) demographic bottlenecks during introduction. Genetic data indicated a localized source area for most sampled invasive populations, with limited evidence for admixing of native source populations. This pattern largely coincides with historical data on pet trade exports. However, the invasive populations are genetically more similar than predicted from the export data alone. The extent of bottleneck effects varied among invasive populations. The observed low genetic diversity, evidence of demographic contraction and restricted source area do not support the hypothesis that invasion is favoured by the mixing and recombining of genetic variation from multiple source populations. Instead, they suggest that reduced genetic variation through random processes may not inhibit successful establishment and invasion in this species. However, convergent selection across invasive sites could also explain the observed patterns of reduction and similarity in genetic variation and/or the restricted source area. In general, the alternative explanation of intraspecific variation in invasive potential among genotypes or geographic areas is neglected, but warrants more attention as it could inform comparative studies and management of biological invaders.
Data from: Genetic evidence for high propagule pressure and long-distance dispersal in monk parakeet (Myiopsitta monachus) invasive populations
The monk parakeet (Myiopsitta monachus) is a successful invasive species that does not exhibit life history traits typically associated with colonizing species (e.g., high reproductive rate or long-distance dispersal capacity). To investigate this apparent paradox, we examined individual and population genetic patterns of microsatellite loci at one native and two invasive sites. More specifically, we aimed to evaluate the role of propagule pressure, sexual monogamy, and long-distance dispersal in monk parakeet invasion success. Our results indicate little loss of genetic variation at invasive sites relative to the native site. We also found strong evidence for sexual monogamy from patterns of relatedness within sites, and no definite cases of extra-pair paternity in either the native site sample or the examined invasive site. Taken together, these patterns directly and indirectly suggest that high propagule pressure has contributed to monk parakeet invasion success. In addition, we found evidence for frequent long-distance dispersal at an invasive site (~100km) that sharply contrasted with previous estimates of smaller dispersal distance made in the native range (~2km), suggesting long-range dispersal also contributes to the species' spread within the United States. Overall, these results add to a growing body of literature pointing to the important role of propagule pressure in determining, and thus predicting, invasion success, especially for species whose life history traits are not typically associated with invasiveness.
Data from: Genetic evidence for high propagule pressure and long-distance dispersal in monk parakeet (Myiopsitta monachus) invasive populations
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Data from: Shared genetic diversity across the global invasive range of the Monk parakeet suggests a common restricted geographic origin and the possibility of convergent selection
Open the record for dataset details and reuse information.
Fine-scale genetic structure reflects limited and coordinated dispersal in the colonial monk parakeet, Myiopsitta monachus
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Monk Parakeet database
<p>Database of Monk Parakeet (Myiopsita monachus)</p>
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