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Global assessment of marine plastic exposure risk for oceanic birds
Clark, Bethany L.; Carneiro, Ana P. B.; Pearmain, Elizabeth J.; Rouyer, Marie-Morgane; Clay, Thomas A.; Cowger, Win; Phillips, Richard A; Manica, AndreaPlastic pollution is distributed patchily around the world's oceans. Likewise, marine organisms that are vulnerable to plastic ingestion or entanglement have uneven distributions. Understanding where wildlife encounters plastic is crucial for targeting research and mitigation. Oceanic seabirds, particularly petrels, frequently ingest plastic, are highly threatened, and cover vast distances during foraging and m...
Contrasting patterns of population structure of Bulwer’s petrel (Bulweria bulwe...
Silva, Mónica C.; Catry, Paulo; Bried, Joël; Kawakami, Kazuto; Flint, Elizabeth; Granadeiro, José P.The patterns of population divergence of mid-latitude marine birds are impacted by only a few biogeographic barriers to dispersal and the efect of intrinsic factors, such as fdelity to natal colonies or wintering grounds, may become more conspicuous. Here we describe, for the frst time, the phylogeographic patterns and historical demography of Bulwer’s petrel Bulweria bulwerii and provide new insights regarding...
Absence of haemosporidian parasite infections in the long-lived Cory’s shearwat...
Campioni, Letizia; Martínez-de la Puente, Josué; Figuerola, Jordi; Granadeiro, José P.; Silva, Mónica C.; Catry, PauloThe apparent scarcity or absence of blood parasites in some avian groups, such as seabirds, has been related to intrinsic and extrinsic factors including host immunological capacity, host-parasite assemblage, and ecological parameters, but also to reduced sensitivity of some methods to detect low parasite prevalence/intensities of infection. Here, we examined the haemosporidian parasite prevalence in a breeding...
Absence of haemosporidian parasite infections in the long-lived Cory’s shearwat...
Campioni, Letizia; Martínez-de la Puente, Josué; Figuerola, Jordi; Granadeiro, José Pedro; Silva, Mónica C.; Catry, PauloThe apparent scarcity or absence of blood parasites in some avian groups, such as seabirds, has been related to intrinsic and extrinsic factors including host immunological capacity, host-parasite assemblage, and ecological parameters, but also to reduced sensitivity of some methods to detect low parasite prevalence/intensities of infection. Here, we examined the haemosporidian parasite prevalence in a breeding...
Searching for a breeding population of Swinhoe’s Storm-petrel at Selvagem Grand...
Silva, Mónica C.; Matias, Rafael; Ferreira, Vânia; Catry, Paulo; Granadeiro, José PedroLong-distance dispersal plays a critical role in population dynamics, particularly in species that occupy fragmented habitats, but it is seldom detected and investigated. The pelagic seabird Swinhoe's Storm-petrel, Oceanodroma monorhis, breeds exclusively in the NW Pacific. Individuals have been regularly observed in the Atlantic Ocean since the 1980s, but breeding has never been confirmed. In this study, we se...
Understanding the mechanisms of antitropical divergencein the seabird White-fac...
Silva, Mónica C.; Matias, Rafael; Wanless, Ross M.; Ryan, Peter G.; Stephenson, Brent M.; Bolton, Mark; Ferrand, Nuno; Coelho, Manuela M.Analytical methods that apply coalescent theory to multilocus data have improved infer-ences of demographic parameters that are critical to understanding population divergenceand speciation. In particular, at the early stages of speciation, it is important to implementmodels that accommodate conflicting gene trees, and benefit from the presence of sharedpolymorphisms. Here, we employ eleven nuclear loci and the m...
Can thin-billed prions Pachyptila belcheri breed successfully on an island with...
Catry, Paulo; Silva, Mónica C.; MacKay, S.; Campos, Ana R.; Masello, Juan F.; Quillfeldt, Petra; Strange, Ian J.Small burrowing petrels nesting on islands rarely survive introductions of mammalian predators. On New Island, a population of around two million pairs of thin-billed prions nests despite the presence of introduced ship rats, house mice and feral cats. Understanding the mechanisms of such coexistence is important, as it is important to establish a baseline for future monitoring. To do this, prion breeding succe...
Population census and nesting habitat selection of thin-billed prion Pachyptila...
Catry, Paulo; Campos, Ana R.; Segurado, Pedro; Silva, Mónica C.; Strange, Ian J.Seabirds have the potential to be used as indicators for monitoring changes in the southern oceans. However, many species and populations are still poorly known. The thin-billed prion (Pachyptila belcheri) is the most abundant seabird species around the Falkland Islands, but this far, no detailed censuses of its populations had been carried out. In this study, we developed a methodology, based on standard field...