Reproductive timing as a constraint on invasion success in the Ring-necked parakeet (Psittacula krameri)

Luna, Álvaro Fernández; Franz, Detlev; Strubbe, Diederik; Shwartz, Assaf; Braun, Michael P.; Hernández‐Brito, Dailos; Malihi, Yariv; Kaplan, Asaf; Mori, Emiliano; Menchetti, Mattia; Turnhout, C.A.M. van; Parrott, Dave; Chmielewski, Frank‐M.; Edelaar, Pim

doi:10.1007/s10530-017-1436-y

Cited by 23 publications

(18 citation statements)

References 45 publications

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“…whether the goal is to sample the entire population, or the portion that has not yet migrated or arrived). Similarly, during the breeding season, individuals may remain in the nest to incubate or guard, so will not forage socially or join communal roosts, and will less likely be encountered and counted (Luna et al 2017).…”

Section: Parrot Traits Hinder Estimation Of Abundance and Population mentioning

confidence: 99%

“…Roost surveys have been used to estimate abundance when parrots are widely dispersed (e.g. Gnam and Burchsted 1991;Casagrande and Beissinger 1997;Pithon and Dytham 1999;Downs 2005;Matuzak and Brightsmith 2007;Burnham et al 2010), and are especially useful to estimate population size when the local and even global populations seasonally concentrate into a few communal roosts (Martinez and Prestes 2008;Tella et al 2013;Pacífico et al 2014;Luna et al 2017). This method requires previous fieldwork to locate the roosts, often facilitated by local knowledge since roost sites are sometimes used for decades (e.g.…”

Section: Roost Surveysmentioning

confidence: 99%

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Revisiting methods for estimating parrot abundance and population size

Dénes

Tella

Beissinger

2017

Emu - Austral Ornithology

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Estimating abundance and population size is essential for many ecological and conservation studies of parrots. Achieving these goals requires methods that yield reliable estimates, but parrot traits can make them difficult to detect, count, and capture. We review established and emergent sampling and analytical methods used to estimate parrot abundance and population size, focusing on their assumptions, requirements, and limitations. Roost surveys are cost-effective if all roost locations in a region are known and stable, which is uncommon. Capture-recapture methods incorporate detection probability, but capturing, marking and resighting parrots can be difficult. Distance sampling estimates detection probability and surveys multiple species simultaneously, but is sensitive to the spatial distribution of individuals and excludes birds in flight. Roadside transects can cover large areas and survey multiple species, but habitats near roads may differ from the surrounding areas, biasing abundance estimates. Occupancy surveys and hierarchical models usually require spatially and temporally replicated datasets. Both allow estimation of detection probability; the former dispenses with count data, while the latter is a versatile set of methods that can incorporate multiple processes influencing detection and abundance. Finally, passive acoustic surveys can sample multiple species simultaneously, but identification of vocalisations can be difficult and time-consuming.

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Section: Parrot Traits Hinder Estimation Of Abundance and Population mentioning

confidence: 99%

Section: Roost Surveysmentioning

confidence: 99%

Revisiting methods for estimating parrot abundance and population size

Dénes

Tella

Beissinger

2017

Emu - Austral Ornithology

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“…In central Italy, RNPs outcompeted native, declining scops owls from nesting sites, forcing them to occupy suboptimal breeding habitats to minimize competition (Mori et al, 2017). RNPs are early breeders (Luna et al, 2017) and use tree cavities before they return from their African wintering grounds. Although RNPs may also be highly aggressive against larger predators (Hernández-Brito et al, 2014a), their antipredatory behaviour is mainly focused on breeding areas, showing a greater vulnerability at nocturnal roosts, which could be exploited by nocturnal predators.…”

Section: Discussionmentioning

confidence: 99%

'Some like it alien': predation on invasive ring–necked parakeets by the long–eared owl in an urban area

Mori

Malfatti²,

Louarn

et al. 2020

Anim. Biodiv. Conserv.

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Predation pressure by native species may limit the spread of alien invasive species, thus playing a pivotal role in the impact and implementation of management strategies. The ring–necked parakeet Psittacula krameri is one of the most widespread alien bird species in Europe, with nearly 70 established populations. Predators of this species include diurnal raptors, synanthropic corvids, and rodents. Here we report for the first time that long–eared owls Asio otus might have preyed upon parakeets in their night roosts. Analysis of 167 owl pellets showed that ring–necked parakeets made up over 10 % of the total volume of the diet of these owls in winter (32.93 % of absolute frequency), representing the most important prey species after murid rodents and passerine birds. Further studies are needed to investigate whether parakeet consumption by long–eared owls is only a local occurrence or whether it is widespread in European cities. If so, predation by long–eared owl may eventually lead to a form of parakeet control and may limit the impact of this introduced parakeet on native biodiversity.

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“…Different subspecies of the same species may show different distribution patterns, different habitat requirements and, thus, different establishment success after introduction (Rushton et al ., ; Cardador et al ., ; Le Gros et al ., ; Menchetti, Mori & Angelici, ). One of the most successful bird invaders, the ring‐necked parakeet Psittacula krameri , occurs across a wide range, including central Africa and the Indian subcontinent (Menchetti et al ., ), but the Asian subspecies are more adapted than African ones to European temperate to cold climates (Cardador et al ., ; Le Gros et al ., ; Luna et al ., ). Currently, molecular analyses and geometric morphometrics are redefining the taxonomic status of many species worldwide, resulting in the splitting or clumping animal taxa (e.g.…”

Section: Introductionmentioning

confidence: 97%

The importance of taxonomy in species distribution models at a global scale: the case of an overlooked alien squirrel facing taxonomic revision

et al. 2018

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The Siberian chipmunk is native to north-eastern Asia, but alien populations of this squirrel, introduced through the pet trade, occur in many European countries. This rodent has been listed as an invasive species of European concern, being a potential vector of ticks spreading Lyme disease. We aimed to assess its current distribution range and to identify areas of potential invasion. Two sets of species distribution models were conducted, one considering the locations of the species (n = 625 occurrences) and the other with only the occurrences of the Korean subspecies (the invasive one in Europe; n = 255 occurrences), which might be a separate species from the Siberian one. We included 19 uncorrelated predictors (two topographic, nine land cover, five bioclimatic and three anthropogenic variables), which may represent the habitat characteristics of the target species. Most of the northern hemisphere supports the establishment of the Siberian chipmunk, particularly for the invasive Korean subspecies (especially in Europe, where it is already established), mostly in urban areas. Anthropogenic food supply was found to be an important factor promoting the growth of alien populations of chipmunks, whereas the presence of the native red squirrel at the time of introduction may limit it.

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Reproductive timing as a constraint on invasion success in the Ring-necked parakeet (Psittacula krameri)

Cited by 23 publications

References 45 publications

Revisiting methods for estimating parrot abundance and population size

Revisiting methods for estimating parrot abundance and population size

'Some like it alien': predation on invasive ring–necked parakeets by the long–eared owl in an urban area

The importance of taxonomy in species distribution models at a global scale: the case of an overlooked alien squirrel facing taxonomic revision

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