Environmental drivers of parasite load and species richness in introduced parakeets in an urban landscape
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Introduced species represent a threat to native wildlife worldwide, due to predation, competition, and disease transmission. Concurrent introduction of parasites may also add a new dimension of competition, i.e. parasite-mediated competition, through spillover and spillback dynamics. Urban areas are major hotspots of introduced species, but little is known about the effects of urban habitat structure on the parasite load and diversity of introduced species. Here, we investigated such environmental effects on the ectoparasite load, richness, and occurrence of spillback in two widespread invasive parakeets, Psittacula krameri and Myiopsitta monachus, in the metropolitan area of Rome, central Italy. We tested 231 parakeets and found that in both species parasite load was positively influenced by host abundance at local scale, while environmental features such as the amount of natural or urban habitats, as well as richness of native birds, influenced parasite occurrence, load, and richness differently in the two host species. Therefore, we highlight the importance of host population density and habitat composition in shaping the role of introduced parakeets in the spread of both native and introduced parasites, recommending the monitoring of urban populations of birds and their parasites to assess and manage the potential occurrence of parasite-mediated competition dynamics as well as potential spread of vector-borne diseases.
KeywordsEctoparasites Introduction Myiopsitta monachus Psittaciformes Psittacula krameri Urban ecology
We thank all the people and volunteers from Lipu Wildlife Rescue Centre in Rome for their kind help in collecting data. Two reviewers made valuable comments on a previous ms version.
Two authors (LA and EM) were funded by two Short Term Scientific Missions by the COST Action ES1304 “Parrotnet - European Network on Invasive Parakeets”.
Compliance with ethical standards
All applicable international, national, and/or institutional guidelines for the care and use of animals were followed.
Conflict of interest
The authors declare that they have no conflict of interest.
- Aramburú R, Calvo S, Alzugaray ME, Cicchino A (2003) Ectoparasitic load of monk parakeet (Myiopsitta monachus, Psittacidae) nestlings. Ornit Neotrop 14:415–418Google Scholar
- Baker AS (1999) Mites and ticks of domestic animals: an identification guide and information source. The Stationary Office, LondonGoogle Scholar
- Batllori X, Nos R (1985) Presencia de la cotorrita gris (Myiopsitta monachus) y de la cotorrita de collar (Psittacula krameri) en el Area Metropolitana de Barcelona. Misc Zool 9:407–411Google Scholar
- Butler CJ (2003) Population biology of the introduced Rose-ringed Parakeet Psittacula krameri in the UK. Doctoral dissertation, University of Oxford: OxfordGoogle Scholar
- Chapuis JL, Obolenskaya E, Pisanu B, Lissovsky A (2011) Datasheet on Tamias sibiricus. CABI, Invasive Species Compendium, WallingfordGoogle Scholar
- Cignini B, Zapparoli M (1996) Atlante degli uccelli nidificanti a Roma. Fratelli Palombi Editori, RomaGoogle Scholar
- Clemants SE, Moore G (2003) Patterns of species diversity in eight northeastern United States cities. Urban Habitats 1:4–16Google Scholar
- Combes C (1991) Evolution of parasite life cycles. In: Toft C, Aeschlimann A, Bolis L (eds) Parasite–host associations: coexistence or conflict? Oxford University Press, Oxford, pp 62–82Google Scholar
- Covas L, Senar JC, Roque L, Quesada J (2017) Records of fatal attacks by rose-ringed parakeets Psittacula krameri on native avifauna. Rev Catal Ornitol 33:45–49Google Scholar
- Dangoisse G (2009) Étude de la population de Conures veuves (Myiopsitta monachus) de Bruxelles-Capitale. Aves 46:57–69Google Scholar
- Di Santo M, Vignoli L, Battisti C, Bologna MA (2013) Feeding activity and space use of a naturalized population of monk parakeet, Myiopsitta monachus, in a Mediterranean urban area. Rev Ecol Terre Vie 68:275–282Google Scholar
- Domènech J, Carrillo J, Senar JC (2003) Population size of the Monk Parakeet (Myiopsitta monachus) in Catalonia. Rev Cat Ornitol 20:1–9Google Scholar
- Ferman LM, Peter HU, Montalti D (2010) A study of feral pigeon Columba livia var. in urban and suburban areas in the city of Jena, Germany. Arxius de Miscellània Zoològica 8:1–8Google Scholar
- Golightly Jr RT, Faulhaber MR, Sallee KL, Lewis JC (1994) Food habits and management of introduced red fox in southern California. Proceedings of the Sixteenth Vertebrate Pest Conference 21Google Scholar
- Guimarães LR (1980) Ischnocera (Mallophaga) infesting parrots (Psittaciformes). IV. Genus Echinophilopterus Ewing, 1927. Papeis avulsos de zoologiaGoogle Scholar
- Hutson AM (1984) Keds, Flat-flies and Bat-flies: Diptera, Hippoboscidae and Nycteribiidae. Royal Entomological Society of London, LondonGoogle Scholar
- Johnson KP, Clayton DH (2003) The biology, ecology, and evolution of chewing lice, vol 24. Illinois Natural History Survey Special Publication, Champaign, pp 449–476Google Scholar
- MacGregor-Fors I, Calderón-Parra R, Meléndez-Herrada A, López-López S, Schondube JE (2011) Pretty, but dangerous! Records of non-native monk parakeets (Myiopsitta monachus) in Mexico. Rev Mex Biodiversidad 82:1053–1056Google Scholar
- Møller AP, Dufva R, Allander K (1993) Parasites and the evolution of host social behavior. Adv Study Behav 22:60405–60402Google Scholar
- Pinheiro J, Bates D, DebRoy S, Sarkar D (2014) nlme: linear and nonlinear mixed effects models. R package version 3.1–117. Available at http://CRAN.R-project.org/package=nlme
- Price RD, Hellenthal RA, Palma RL (2003) World checklist of chewing lice with host associations and keys to families and genera. In: Price RD, Hellenthal RA, Palma RL, Johnson KP, Clayton DH (eds) The chewing lice: world checklist and biological overview. Illinois Natural History Survey Special Publication, Champaign-Urbana, pp 1–448Google Scholar
- R Core Team (2016) R: A language and environment for statistical computing. R Foundation for Statistical Computing, WienGoogle Scholar
- Smit FGAM (1983) Key to the genera and subgenera of Ceratophyllidae. In: Traub R, Rothschild M, Haddow J (eds) The Rothschild collection of fleas. The Ceratophyllidae. British Museum (Nat. Hist.), London, pp 1–36Google Scholar
- Whitaker AP (2007) Fleas (Siphonaptera). In: Royal Entomological Society, Spencer KA (eds) Handbook for the identification of British insects. Entomological Society of London, LondonGoogle Scholar