Predator and scavenger movements among and within endangered seabird colonies: Opportunities for pathogen spread
Type | Article | ||||||||||||||||||||
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Date | 2020-02 | ||||||||||||||||||||
Language | English | ||||||||||||||||||||
Author(s) | Gamble Amandine1, 2, Bazire Romain1, Delord Karine3, Barbraud Christophe3, Jaeger Audrey4, 5, Gantelet Hubert6, Thibault Eric6, Lebarbenchon Camille4, Lagadec Erwan4, Tortosa Pablo4, Weimerskirch Henri3, Thiebot Jean-Baptiste3, 7, 8, Garnier Romain9, Tornos Jeremy1, 6, Boulinier Thierry1 | ||||||||||||||||||||
Affiliation(s) | 1 : Univ Paul Valery Montpellier 3, Univ Montpellier, CEFE, EPHE,IRD,UMR CNRS 5175, Montpellier, France. 2 : Univ Calif Los Angeles, Dept Ecol & Evolutionary Biol, Los Angeles, CA ,USA. 3 : Univ La Rochelle, UMR CNRS 7372, CEBC, Villiers En Bois, France. 4 : Univ Reunion, UMR Proc Infect Milieu Insulaire Trop PIMIT, CNRS, GIP CYROI, St Denis, Reunion, France. 5 : Univ Reunion, Ecol Marine Trop Oceans Pacific & Indien ENTROPIE, UMR UR IRD CNRS, St Denis, Reunion, France. 6 : Ceva Biovac, Beaucouze, France. 7 : Reserve Nat Natl Terres Australes Francaise, St Denis, Reunion, France. 8 : Natl Inst Polar Res, Tachikawa, Tokyo, Japan. 9 : Georgetown Univ, Dept Biol, Washington, DC 20057, USA. |
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Source | Journal Of Applied Ecology (0021-8901) (Wiley), 2020-02 , Vol. 57 , N. 2 , P. 367-378 | ||||||||||||||||||||
DOI | 10.1111/1365-2664.13531 | ||||||||||||||||||||
WOS© Times Cited | 11 | ||||||||||||||||||||
Keyword(s) | conservation biology, disease ecology, dynamic space utilization, individual heterogeneity, movement ecology, Pasteurella multocida, sentinel species, serology | ||||||||||||||||||||
Abstract | The spatial structure of host communities is expected to constrain pathogen spread. However, predators and/or scavengers may connect distant host (sub)populations when foraging. Determining whether some individuals or populations play a prominent role in the spread of pathogens is critical to inform management measures. We explored movements and epidemiological status of brown skuas Stercorarius antarcticus, the only avian terrestrial consumer native of Amsterdam Island (Indian Ocean), to assess whether and how they could be involved in the spread of the bacterium Pasteurella multocida, which recurrently causes avian cholera outbreaks in endangered albatross and penguin species breeding on the island. High proportions of seropositive and DNA-positive individuals for P. multocida indicated that skuas are highly exposed to the pathogen and may be able to transmit it. Movement tracking revealed that the foraging ranges of breeding skuas largely overlap among individuals and expand all along the coasts where albatrosses and penguins nest, but not on the inland plateau hosting the endemic Amsterdam albatross Diomedea amsterdamensis. Considering the epidemiological and movement data, skua movements may provide opportunity for pathogen spread among and within seabird colonies. Synthesis and applications. This work highlights the importance of considering the behaviour and epidemiological status of predators and scavengers in disease dynamics because the foraging movements of individuals of such species can potentially limit the efficiency of local management measures in spatially structured host communities. Such species could thus represent priority vaccination targets to implement efficient management measures aiming at limiting pathogen spread and also be used as sentinels to monitor pathogen circulation and evaluate the effectiveness of management measures. |
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